Squashed 'build/dobuild/' content from commit b017db7

git-subtree-dir: build/dobuild
git-subtree-split: b017db7c22e7c0ca6cee3f0f5ac1dd50f3b68eb9

.env

@@ -0,0 +1,10 @@
+COMPOSEENV_DOCKER_VERSION=18.09.6
+COMPOSEENV_DOCKER_DOWNLOAD=https://download.docker.com
+COMPOSEENV_BATS_DOWNLOAD=https://github.com/bats-core
+COMPOSEENV_DUMB_INIT_DOWNLOAD=https://github.com/Yelp/dumb-init
+COMPOSEENV_LIBFAKETIME_DOWNLOAD=https://github.com/wolfcw/libfaketime
+COMPOSEENV_REGISTRY_PREFIX=
+COMPOSEENV_PROJECT_VERSION=0.0.1
+COMPOSEENV_PROJECTPATH=/var/tmp
+COMPOSEENV_CAPATH=./assets/ca-certificates
+DOCKERSOCK_GROUP=100

.gitignore

@@ -0,0 +1,3 @@
+/assets/ca-certificates/*.crt
+.build
+.deps

.project

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>dobuild</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+	</buildSpec>
+	<natures>
+	</natures>
+</projectDescription>

AUTHORS

@@ -0,0 +1,7 @@
+# This is the list of dobuild authors for copyright purposes.
+#
+# This does not necessarily list everyone who has contributed code, since in
+# some cases, their employer may be the copyright holder. To see the full list
+# of contributors, see the revision history in source control.
+Falk Werner
+Osama El Hosami

LICENSE.txt

@@ -0,0 +1,373 @@
+Mozilla Public License Version 2.0
+==================================
+
+1. Definitions
+--------------
+
+1.1. "Contributor"
+    means each individual or legal entity that creates, contributes to
+    the creation of, or owns Covered Software.
+
+1.2. "Contributor Version"
+    means the combination of the Contributions of others (if any) used
+    by a Contributor and that particular Contributor's Contribution.
+
+1.3. "Contribution"
+    means Covered Software of a particular Contributor.
+
+1.4. "Covered Software"
+    means Source Code Form to which the initial Contributor has attached
+    the notice in Exhibit A, the Executable Form of such Source Code
+    Form, and Modifications of such Source Code Form, in each case
+    including portions thereof.
+
+1.5. "Incompatible With Secondary Licenses"
+    means
+
+    (a) that the initial Contributor has attached the notice described
+        in Exhibit B to the Covered Software; or
+
+    (b) that the Covered Software was made available under the terms of
+        version 1.1 or earlier of the License, but not also under the
+        terms of a Secondary License.
+
+1.6. "Executable Form"
+    means any form of the work other than Source Code Form.
+
+1.7. "Larger Work"
+    means a work that combines Covered Software with other material, in 
+    a separate file or files, that is not Covered Software.
+
+1.8. "License"
+    means this document.
+
+1.9. "Licensable"
+    means having the right to grant, to the maximum extent possible,
+    whether at the time of the initial grant or subsequently, any and
+    all of the rights conveyed by this License.
+
+1.10. "Modifications"
+    means any of the following:
+
+    (a) any file in Source Code Form that results from an addition to,
+        deletion from, or modification of the contents of Covered
+        Software; or
+
+    (b) any new file in Source Code Form that contains any Covered
+        Software.
+
+1.11. "Patent Claims" of a Contributor
+    means any patent claim(s), including without limitation, method,
+    process, and apparatus claims, in any patent Licensable by such
+    Contributor that would be infringed, but for the grant of the
+    License, by the making, using, selling, offering for sale, having
+    made, import, or transfer of either its Contributions or its
+    Contributor Version.
+
+1.12. "Secondary License"
+    means either the GNU General Public License, Version 2.0, the GNU
+    Lesser General Public License, Version 2.1, the GNU Affero General
+    Public License, Version 3.0, or any later versions of those
+    licenses.
+
+1.13. "Source Code Form"
+    means the form of the work preferred for making modifications.
+
+1.14. "You" (or "Your")
+    means an individual or a legal entity exercising rights under this
+    License. For legal entities, "You" includes any entity that
+    controls, is controlled by, or is under common control with You. For
+    purposes of this definition, "control" means (a) the power, direct
+    or indirect, to cause the direction or management of such entity,
+    whether by contract or otherwise, or (b) ownership of more than
+    fifty percent (50%) of the outstanding shares or beneficial
+    ownership of such entity.
+
+2. License Grants and Conditions
+--------------------------------
+
+2.1. Grants
+
+Each Contributor hereby grants You a world-wide, royalty-free,
+non-exclusive license:
+
+(a) under intellectual property rights (other than patent or trademark)
+    Licensable by such Contributor to use, reproduce, make available,
+    modify, display, perform, distribute, and otherwise exploit its
+    Contributions, either on an unmodified basis, with Modifications, or
+    as part of a Larger Work; and
+
+(b) under Patent Claims of such Contributor to make, use, sell, offer
+    for sale, have made, import, and otherwise transfer either its
+    Contributions or its Contributor Version.
+
+2.2. Effective Date
+
+The licenses granted in Section 2.1 with respect to any Contribution
+become effective for each Contribution on the date the Contributor first
+distributes such Contribution.
+
+2.3. Limitations on Grant Scope
+
+The licenses granted in this Section 2 are the only rights granted under
+this License. No additional rights or licenses will be implied from the
+distribution or licensing of Covered Software under this License.
+Notwithstanding Section 2.1(b) above, no patent license is granted by a
+Contributor:
+
+(a) for any code that a Contributor has removed from Covered Software;
+    or
+
+(b) for infringements caused by: (i) Your and any other third party's
+    modifications of Covered Software, or (ii) the combination of its
+    Contributions with other software (except as part of its Contributor
+    Version); or
+
+(c) under Patent Claims infringed by Covered Software in the absence of
+    its Contributions.
+
+This License does not grant any rights in the trademarks, service marks,
+or logos of any Contributor (except as may be necessary to comply with
+the notice requirements in Section 3.4).
+
+2.4. Subsequent Licenses
+
+No Contributor makes additional grants as a result of Your choice to
+distribute the Covered Software under a subsequent version of this
+License (see Section 10.2) or under the terms of a Secondary License (if
+permitted under the terms of Section 3.3).
+
+2.5. Representation
+
+Each Contributor represents that the Contributor believes its
+Contributions are its original creation(s) or it has sufficient rights
+to grant the rights to its Contributions conveyed by this License.
+
+2.6. Fair Use
+
+This License is not intended to limit any rights You have under
+applicable copyright doctrines of fair use, fair dealing, or other
+equivalents.
+
+2.7. Conditions
+
+Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
+in Section 2.1.
+
+3. Responsibilities
+-------------------
+
+3.1. Distribution of Source Form
+
+All distribution of Covered Software in Source Code Form, including any
+Modifications that You create or to which You contribute, must be under
+the terms of this License. You must inform recipients that the Source
+Code Form of the Covered Software is governed by the terms of this
+License, and how they can obtain a copy of this License. You may not
+attempt to alter or restrict the recipients' rights in the Source Code
+Form.
+
+3.2. Distribution of Executable Form
+
+If You distribute Covered Software in Executable Form then:
+
+(a) such Covered Software must also be made available in Source Code
+    Form, as described in Section 3.1, and You must inform recipients of
+    the Executable Form how they can obtain a copy of such Source Code
+    Form by reasonable means in a timely manner, at a charge no more
+    than the cost of distribution to the recipient; and
+
+(b) You may distribute such Executable Form under the terms of this
+    License, or sublicense it under different terms, provided that the
+    license for the Executable Form does not attempt to limit or alter
+    the recipients' rights in the Source Code Form under this License.
+
+3.3. Distribution of a Larger Work
+
+You may create and distribute a Larger Work under terms of Your choice,
+provided that You also comply with the requirements of this License for
+the Covered Software. If the Larger Work is a combination of Covered
+Software with a work governed by one or more Secondary Licenses, and the
+Covered Software is not Incompatible With Secondary Licenses, this
+License permits You to additionally distribute such Covered Software
+under the terms of such Secondary License(s), so that the recipient of
+the Larger Work may, at their option, further distribute the Covered
+Software under the terms of either this License or such Secondary
+License(s).
+
+3.4. Notices
+
+You may not remove or alter the substance of any license notices
+(including copyright notices, patent notices, disclaimers of warranty,
+or limitations of liability) contained within the Source Code Form of
+the Covered Software, except that You may alter any license notices to
+the extent required to remedy known factual inaccuracies.
+
+3.5. Application of Additional Terms
+
+You may choose to offer, and to charge a fee for, warranty, support,
+indemnity or liability obligations to one or more recipients of Covered
+Software. However, You may do so only on Your own behalf, and not on
+behalf of any Contributor. You must make it absolutely clear that any
+such warranty, support, indemnity, or liability obligation is offered by
+You alone, and You hereby agree to indemnify every Contributor for any
+liability incurred by such Contributor as a result of warranty, support,
+indemnity or liability terms You offer. You may include additional
+disclaimers of warranty and limitations of liability specific to any
+jurisdiction.
+
+4. Inability to Comply Due to Statute or Regulation
+---------------------------------------------------
+
+If it is impossible for You to comply with any of the terms of this
+License with respect to some or all of the Covered Software due to
+statute, judicial order, or regulation then You must: (a) comply with
+the terms of this License to the maximum extent possible; and (b)
+describe the limitations and the code they affect. Such description must
+be placed in a text file included with all distributions of the Covered
+Software under this License. Except to the extent prohibited by statute
+or regulation, such description must be sufficiently detailed for a
+recipient of ordinary skill to be able to understand it.
+
+5. Termination
+--------------
+
+5.1. The rights granted under this License will terminate automatically
+if You fail to comply with any of its terms. However, if You become
+compliant, then the rights granted under this License from a particular
+Contributor are reinstated (a) provisionally, unless and until such
+Contributor explicitly and finally terminates Your grants, and (b) on an
+ongoing basis, if such Contributor fails to notify You of the
+non-compliance by some reasonable means prior to 60 days after You have
+come back into compliance. Moreover, Your grants from a particular
+Contributor are reinstated on an ongoing basis if such Contributor
+notifies You of the non-compliance by some reasonable means, this is the
+first time You have received notice of non-compliance with this License
+from such Contributor, and You become compliant prior to 30 days after
+Your receipt of the notice.
+
+5.2. If You initiate litigation against any entity by asserting a patent
+infringement claim (excluding declaratory judgment actions,
+counter-claims, and cross-claims) alleging that a Contributor Version
+directly or indirectly infringes any patent, then the rights granted to
+You by any and all Contributors for the Covered Software under Section
+2.1 of this License shall terminate.
+
+5.3. In the event of termination under Sections 5.1 or 5.2 above, all
+end user license agreements (excluding distributors and resellers) which
+have been validly granted by You or Your distributors under this License
+prior to termination shall survive termination.
+
+************************************************************************
+*                                                                      *
+*  6. Disclaimer of Warranty                                           *
+*  -------------------------                                           *
+*                                                                      *
+*  Covered Software is provided under this License on an "as is"       *
+*  basis, without warranty of any kind, either expressed, implied, or  *
+*  statutory, including, without limitation, warranties that the       *
+*  Covered Software is free of defects, merchantable, fit for a        *
+*  particular purpose or non-infringing. The entire risk as to the     *
+*  quality and performance of the Covered Software is with You.        *
+*  Should any Covered Software prove defective in any respect, You     *
+*  (not any Contributor) assume the cost of any necessary servicing,   *
+*  repair, or correction. This disclaimer of warranty constitutes an   *
+*  essential part of this License. No use of any Covered Software is   *
+*  authorized under this License except under this disclaimer.         *
+*                                                                      *
+************************************************************************
+
+************************************************************************
+*                                                                      *
+*  7. Limitation of Liability                                          *
+*  --------------------------                                          *
+*                                                                      *
+*  Under no circumstances and under no legal theory, whether tort      *
+*  (including negligence), contract, or otherwise, shall any           *
+*  Contributor, or anyone who distributes Covered Software as          *
+*  permitted above, be liable to You for any direct, indirect,         *
+*  special, incidental, or consequential damages of any character      *
+*  including, without limitation, damages for lost profits, loss of    *
+*  goodwill, work stoppage, computer failure or malfunction, or any    *
+*  and all other commercial damages or losses, even if such party      *
+*  shall have been informed of the possibility of such damages. This   *
+*  limitation of liability shall not apply to liability for death or   *
+*  personal injury resulting from such party's negligence to the       *
+*  extent applicable law prohibits such limitation. Some               *
+*  jurisdictions do not allow the exclusion or limitation of           *
+*  incidental or consequential damages, so this exclusion and          *
+*  limitation may not apply to You.                                    *
+*                                                                      *
+************************************************************************
+
+8. Litigation
+-------------
+
+Any litigation relating to this License may be brought only in the
+courts of a jurisdiction where the defendant maintains its principal
+place of business and such litigation shall be governed by laws of that
+jurisdiction, without reference to its conflict-of-law provisions.
+Nothing in this Section shall prevent a party's ability to bring
+cross-claims or counter-claims.
+
+9. Miscellaneous
+----------------
+
+This License represents the complete agreement concerning the subject
+matter hereof. If any provision of this License is held to be
+unenforceable, such provision shall be reformed only to the extent
+necessary to make it enforceable. Any law or regulation which provides
+that the language of a contract shall be construed against the drafter
+shall not be used to construe this License against a Contributor.
+
+10. Versions of the License
+---------------------------
+
+10.1. New Versions
+
+Mozilla Foundation is the license steward. Except as provided in Section
+10.3, no one other than the license steward has the right to modify or
+publish new versions of this License. Each version will be given a
+distinguishing version number.
+
+10.2. Effect of New Versions
+
+You may distribute the Covered Software under the terms of the version
+of the License under which You originally received the Covered Software,
+or under the terms of any subsequent version published by the license
+steward.
+
+10.3. Modified Versions
+
+If you create software not governed by this License, and you want to
+create a new license for such software, you may create and use a
+modified version of this License if you rename the license and remove
+any references to the name of the license steward (except to note that
+such modified license differs from this License).
+
+10.4. Distributing Source Code Form that is Incompatible With Secondary
+Licenses
+
+If You choose to distribute Source Code Form that is Incompatible With
+Secondary Licenses under the terms of this version of the License, the
+notice described in Exhibit B of this License must be attached.
+
+Exhibit A - Source Code Form License Notice
+-------------------------------------------
+
+  This Source Code Form is subject to the terms of the Mozilla Public
+  License, v. 2.0. If a copy of the MPL was not distributed with this
+  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular
+file, then You may include the notice in a location (such as a LICENSE
+file in a relevant directory) where a recipient would be likely to look
+for such a notice.
+
+You may add additional accurate notices of copyright ownership.
+
+Exhibit B - "Incompatible With Secondary Licenses" Notice
+---------------------------------------------------------
+
+  This Source Code Form is "Incompatible With Secondary Licenses", as
+  defined by the Mozilla Public License, v. 2.0.

Makefile

@@ -0,0 +1,86 @@
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+MAKEFLAGS += --no-builtin-rules
+MAKEFILE := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
+SHELL := /bin/sh
+
+.SUFFIXES:
+
+.PHONY: default
+default: all
+
+#######################################################################################################################
+# Overridable defaults
+
+DOBUILD_PROJECTDIR ?= $(patsubst %/,%,$(dir $(MAKEFILE)))
+
+FETCHDIR = $(DOBUILD_PROJECTDIR)/.deps
+CMAKE_BUILDER_OPTS += -f '$(DOBUILD_PROJECTDIR)/assets/projects/cmake/builder-template.mk'
+DOBUILD_BUILDER_OPTS += -f '$(DOBUILD_PROJECTDIR)/assets/projects/dobuild/builder-template.mk'
+GRADLE_BUILDER_OPTS += -f '$(DOBUILD_PROJECTDIR)/assets/projects/gradle/builder-template.mk'
+
+#######################################################################################################################
+# Standard rule target configuration
+
+BUILD_TARGETS += cmake-builder-template-all
+BUILD_TARGETS += dobuild-builder-template-all
+BUILD_TARGETS += gradle-builder-template-all
+
+CLEAN_TARGETS += cmake-builder-template-clean
+CLEAN_TARGETS += dobuild-builder-template-clean
+CLEAN_TARGETS += gradle-builder-template-clean
+
+DISTCLEAN_TARGETS += cmake-builder-template-distclean
+DISTCLEAN_TARGETS += dobuild-builder-template-distclean
+DISTCLEAN_TARGETS += gradle-builder-template-distclean
+
+DIST_TARGETS += cmake-builder-template-dist
+DIST_TARGETS += dobuild-builder-template-dist
+DIST_TARGETS += gradle-builder-template-dist
+
+CHECK_TARGETS += 
+
+MAKEOVERRIDES := FETCHDIR=$(FETCHDIR) $(MAKEOVERRIDES)
+
+#######################################################################################################################
+# Shell exports
+
+#######################################################################################################################
+# Standard rule targets
+
+.PHONY: all
+all: $(BUILD_TARGETS);
+
+.PHONY: check
+check: $(CHECK_TARGETS)
+	$(DOBUILD_PROJECTDIR)/run_tests
+
+.PHONY: run
+run:
+	-$(DOBUILD_PROJECTDIR)/run_tests bash
+
+.PHONY: clean
+clean: $(CLEAN_TARGETS);
+
+.PHONY: dist
+dist: $(DIST_TARGETS);
+
+.PHONY: distclean
+distclean: $(DISTCLEAN_TARGETS);
+
+cmake-builder-template-%:
+	$(MAKE) $(MFLAGS) $(CMAKE_BUILDER_OPTS) $* $(MAKEOVERRIDES)
+
+dobuild-builder-template-%:
+	$(MAKE) $(MFLAGS) $(DOBUILD_BUILDER_OPTS) $* $(MAKEOVERRIDES)
+
+gradle-builder-template-%:
+	$(MAKE) $(MFLAGS) $(GRADLE_BUILDER_OPTS) $* $(MAKEOVERRIDES)

README.md

@@ -0,0 +1,89 @@
+# dobuild
+
+## Introduction
+
+A major concern when developing and maintaining software, is to achieve reproducibility of builds. This can be 
+especially necessary, when product service contract or warranty requirements enforce backports of bug fixes into 
+previously released versions.
+
+As noted by [reproducible-builds.org](https://reproducible-builds.org/docs/):
+
+> Getting reproducible builds for your software might be easier than you think! But it might require small changes
+> to your build system and a strategy on how to enable others to recreate an environment in which the builds can be
+> reproduced.
+
+The goal of this project is to support users, editing, building, testing and distributing software, by providing an 
+*easy to install* and *auditable* deterministic build environment based on GNU Make and OCI Containers.
+
+## Overview
+
+TODO
+
+## Prerequisites
+
+TODO
+
+## Embed dobuild in your project using git
+
+A simple way of referencing dobuild in your standalone project is to use it as git subtree. Using git subtree allows to nest
+one repository inside another as a sub-directory. It is one of several ways git can manage dependencies between repositories
+(or projects). For further details refer to [Git subtree: the alternative to Git submodule](https://www.atlassian.com/blog/git/alternatives-to-git-submodule-git-subtree).
+
+### Initial Setup
+
+Change to the root of your standalone project git repository. Ensure repository has no outstanding changes, or reset them
+(git reset --hard). Adding the subtree as a remote allows you to refer to it in shorter form (dobuild). After adding
+the remote, add the subtree to a folder e.g. build/dobuild/ selecting a tag or branch e.g. master to clone the content of 
+repository.
+
+```bash
+
+   git remote add -f dobuild https://github.com/nosamad/dobuild.git \
+&& git subtree add --squash --prefix build/dobuild/ dobuild master
+
+```
+
+### Update changes
+
+To update changes in sub-project dobuild, pull the subtree (build/dobuild/) selecting the branch or tag e.g. master again.
+
+```bash
+
+   git fetch dobuild master \
+&& git subtree pull --squash --prefix build/dobuild/ dobuild master
+
+```
+
+Afterwards changes can be freely committed as part of your standalone project repository.
+
+### Contribute changes back upstream
+
+To contribute changes back to the upstream project (dobuild), your need to fork the project and add it as another remote:
+
+```bash
+
+git remote add dobuild-fork https://github.com/<YOURUSER>/dobuild.git
+
+```
+
+Afterwards you can use a subtree push to get your changes into your forked repository, in order to open a pull-request.
+
+```bash
+
+git subtree push --prefix=build/dobuild/ dobuild-fork master
+
+```
+
+### Purge
+
+Purging a git subtree is also fairly easy - just remove the directory and commit the change. There are no additional config settings to purge unlike known from git submodules.
+
+## Roadmap
+
+TODO
+
+## License
+
+Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+
+Licensed under the [MPL-2](LICENSE.txt) License.

VERSION

@@ -0,0 +1 @@
+0.0.1

assets/adapters/cmake/assemble

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exec cmake_adapter "$@"

assets/adapters/cmake/check

@@ -0,0 +1,15 @@
+#!/bin/sh -e
+
+supports_check_target() {
+  [ -f "$1" ] && grep -q '^check$' "$1"
+}
+
+if supports_check_target 'DoBuildFiles/targets.txt'; then
+  set -- check "$@"
+else
+  assemble
+  set -- test "$@"
+fi
+
+exec cmake_adapter "$@"
+

assets/adapters/cmake/check-memcheck

@@ -0,0 +1,15 @@
+#!/bin/sh -e
+
+supports_memcheck_target() {
+  [ -f "$1" ] && grep -q '^memcheck$' "$1"
+}
+
+if supports_memcheck_target 'DoBuildFiles/targets.txt'; then
+  set -- cmake_adapter memcheck "$@"
+else
+  assemble
+  set -- ctest_adapter -T memcheck "$@"
+fi
+
+exec "$@"
+

assets/adapters/cmake/cmake_adapter

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+. DoBuildFiles/generic.properties
+. DoBuildFiles/cmake.properties
+. cmake_helper.sh
+
+export CTEST_OUTPUT_ON_FAILURE=1
+
+{ [ -z "$BUILDVERBOSE" ] && [ -z "$TESTVERBOSE" ]; } || set -- "$(cmake_generator_verbose_opt "$CMAKE_GENERATOR_NAME")" "$@"
+[ -z "$VERBOSE" ] || set -x
+
+exec "$CMAKE_GENERATOR_CMD" -j"$NPROC" "$@"

assets/adapters/cmake/cmake_helper.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+cmake_ninja_verbose_opt() {
+  echo '-v'
+}
+
+cmake_make_verbose_opt() {
+  echo 'VERBOSE=1'
+}
+
+cmake_generator_verbose_opt() {
+  "cmake_${1}_verbose_opt"
+}

assets/adapters/cmake/ctest_adapter

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+. DoBuildFiles/generic.properties
+. DoBuildFiles/cmake.properties
+. cmake_helper.sh
+
+{ [ -z "$BUILDVERBOSE" ] && [ -z "$TESTVERBOSE" ]; } || set -- "$(cmake_generator_verbose_opt "$CMAKE_GENERATOR_NAME")" "$@"
+[ -z "$VERBOSE" ] || set -x
+
+exec ctest --output-on-failure -j"$NPROC" "$@"

assets/adapters/cmake/delegate

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exec cmake_adapter "$@"

assets/adapters/cmake/package

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exec cmake_adapter package "$@"

assets/adapters/cmake/package-install

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+export DESTDIR="$1"
+
+exec cmake_adapter install "$@"

assets/adapters/cmake/prepare

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+. DoBuildFiles/generic.properties
+. DoBuildFiles/cmake.properties
+
+camelcase() {
+  echo "$@" | sed -r 's/(^|_)([a-z])/\U\2/g'
+}
+
+if [ -f "${CMAKE_TOOLCHAIN_FILE}" ]; then
+  set -- "$@" "-DCMAKE_TOOLCHAIN_FILE=${CMAKE_TOOLCHAIN_FILE}"
+fi
+if [ -n "$BUILD_TESTING" ]; then
+  set -- "$@" "-DBUILD_TESTING=ON"
+fi
+set -- "$@" -DCMAKE_EXPORT_COMPILE_COMMANDS=ON "-DCMAKE_BUILD_TYPE=$(camelcase "$VARIANT")" "-G${CMAKE_GENERATOR}" "-B${PWD}" "$PROJECTDIR"
+[ -z "$VERBOSE" ] || set -x
+
+exec cmake "$@"

assets/adapters/cmake/save-artifacts

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+. DoBuildFiles/generic.properties
+. DoBuildFiles/cmake.properties
+
+[ -z "$VERBOSE" ] || set -x
+
+exec "$DOBUILDDIR/bin/tar_cc_settings" \
+  --project-root "$PROJECTDIR" \
+  --build-system "cmake-${CMAKE_GENERATOR_NAME}" \
+  --include-prefix "$TARGET/DoBuildFiles" \
+  compile_commands.json \
+  CMakeCache.txt

assets/adapters/gradle/assemble

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+. DoBuildFiles/generic.properties
+
+if [ -n "$BUILD_TESTING" ]; then
+  set -- testClasses "$@"
+fi
+
+exec gradle_adapter classes "$@"

assets/adapters/gradle/check

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exec gradle_adapter cleanTest test "$@"

assets/adapters/gradle/delegate

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exec gradle_adapter "$@"

assets/adapters/gradle/gradle_adapter

@@ -0,0 +1,17 @@
+#!/bin/sh
+
+. DoBuildFiles/generic.properties
+
+{ [ -z "$BUILDVERBOSE" ] && [ -z "$TESTVERBOSE" ]; } || set -- --info "$@"
+[ -z "$VERBOSE" ] || set -x 
+
+exec gradle \
+  --no-daemon \
+  --parallel \
+  --console plain \
+  --max-workers "$NPROC" \
+  --gradle-user-home "$PWD/gradle" \
+  --project-cache-dir "$PWD/gradle-cache" \
+  --project-dir "$PROJECTDIR" \
+  "-Dorg.gradle.project.buildDir=$PWD/build" \
+  "$@"

assets/projects/cmake/arm32v7-alpine-builder-template.dockerfile

@@ -0,0 +1,89 @@
+ARG REGISTRY_PREFIX=''
+ARG DISTRIB_VERSION=3.9
+
+FROM ${REGISTRY_PREFIX}arm32v7/alpine:${DISTRIB_VERSION} as builder
+
+ARG QEMU_VERSION_=v3.1.0-2
+COPY bin/qemu-arm-static-$QEMU_VERSION_ /usr/bin/qemu-arm-static
+
+ARG TZ=UTC
+ENV LANG=C.UTF-8
+ENV LC_ALL=${LANG}
+
+RUN set -x \
+  && installdeps="tzdata" \
+  && apk add --no-cache --virtual .install-deps $installdeps \
+  && ls /usr/share/zoneinfo \
+  && cp -H --remove-destination "/usr/share/zoneinfo/$TZ" /tmp/localtime \
+  && apk del .install-deps \
+  && mv /tmp/localtime /etc/localtime \
+  && echo "$TZ" > /etc/timezone \
+  && apk add --no-cache \
+       bash \
+       make \
+       gcc \
+       musl-dev
+
+COPY src /usr/local/src
+
+ARG PARALLELMFLAGS=-j2
+
+ARG DUMB_INIT_VERSION=1.2.2
+ARG DUMB_INIT_MTIME=
+RUN set -x \
+  && builddeps="vim" \
+  && apk add --no-cache --virtual .build-deps $builddeps \
+  && [ -n "$DUMB_INIT_MTIME" ] && export SOURCE_DATE_EPOCH="$DUMB_INIT_MTIME" \
+  && builddir="/tmp/out" \
+  && mkdir -p "$builddir" \
+  && cd "$builddir" \
+  && cp -R "/usr/local/src/dumb-init-$DUMB_INIT_VERSION" . \
+  && cd "dumb-init-$DUMB_INIT_VERSION" \
+  && make "$PARALLELMFLAGS" \
+  && chmod +x dumb-init \
+  && mv dumb-init /usr/local/bin/dumb-init \
+  && dumb-init --version \
+  && rm -rf "$builddir" \
+  && apk del .build-deps
+
+FROM ${REGISTRY_PREFIX}arm32v7/alpine:${DISTRIB_VERSION}
+
+ARG TZ=UTC
+ENV LANG=C.UTF-8
+ENV LC_ALL=${LANG}
+
+COPY --from=builder /usr/bin/qemu-arm-static /usr/bin/qemu-arm-static
+COPY --from=builder /usr/local /usr/local
+COPY --from=builder /etc/localtime /etc/localtime
+COPY --from=builder /etc/timezone /etc/timezone
+
+RUN set -x \
+  && apk add --no-cache \
+       coreutils \
+       gcc \
+       g++ \
+       make \
+       cmake \
+       ninja \
+       pkgconf \
+       gdb \
+       valgrind
+
+ENV LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/local/lib"
+ENV PKG_CONFIG_PATH=/usr/local/lib32/pkgconfig
+
+ENTRYPOINT ["dumb-init", "--"]
+CMD [ "/bin/sh" ]
+
+ONBUILD ARG USERID=1000
+ONBUILD RUN set -x \
+  && adduser -u "$USERID" -s /bin/bash -D user
+
+# unused
+ARG DISTRIB_ID=
+ARG SYS=
+ARG ABI=
+ARG MARCH=
+ARG HOSTMARCH=
+ARG ID=
+ARG VARIANT=

assets/projects/cmake/arm32v7-ubuntu-builder-template.dockerfile

@@ -0,0 +1,91 @@
+ARG REGISTRY_PREFIX=''
+ARG DISTRIB_VERSION=bionic
+
+FROM ${REGISTRY_PREFIX}arm32v7/ubuntu:${DISTRIB_VERSION} as builder
+
+ARG QEMU_VERSION_=v3.1.0-2
+COPY bin/qemu-arm-static-$QEMU_VERSION_ /usr/bin/qemu-arm-static
+
+ARG TZ=UTC
+ENV LANG=C.UTF-8
+ENV LC_ALL=${LANG}
+
+RUN set -x \
+  && installdeps="tzdata" \
+  && apt-get update \
+  && apt-get install --yes --no-install-recommends $installdeps \
+  && ls /usr/share/zoneinfo \
+  && cp -H --remove-destination "/usr/share/zoneinfo/$TZ" /tmp/localtime \
+  && { apt-get purge -y $installdeps || true; } \
+  && mv /tmp/localtime /etc/localtime \
+  && echo "$TZ" > /etc/timezone \
+  && apt-get update \
+  && apt-get install --yes --no-install-recommends \
+       build-essential \
+  && rm -rf /var/lib/apt/lists/*
+
+COPY src /usr/local/src
+
+ARG PARALLELMFLAGS=-j2
+
+ARG DUMB_INIT_VERSION=1.2.2
+ARG DUMB_INIT_MTIME=
+RUN set -x \
+  && builddeps="vim-common" \
+  && apt-get update \
+  && apt-get install --yes --no-install-recommends $builddeps \
+  && rm -rf /var/lib/apt/lists/* \
+  && [ -n "$DUMB_INIT_MTIME" ] && export SOURCE_DATE_EPOCH="$DUMB_INIT_MTIME" \
+  && builddir="/tmp/out" \
+  && mkdir -p "$builddir" \
+  && cd "$builddir" \
+  && cp -R "/usr/local/src/dumb-init-$DUMB_INIT_VERSION" . \
+  && cd "dumb-init-$DUMB_INIT_VERSION" \
+  && make "$PARALLELMFLAGS" \
+  && chmod +x dumb-init \
+  && mv dumb-init /usr/local/bin/dumb-init \
+  && dumb-init --version \
+  && rm -rf "$builddir" \
+  && apt-get purge -y $builddeps
+
+FROM ${REGISTRY_PREFIX}arm32v7/ubuntu:${DISTRIB_VERSION}
+
+ARG TZ=UTC
+ENV LANG=C.UTF-8
+ENV LC_ALL=${LANG}
+
+COPY --from=builder /usr/bin/qemu-arm-static /usr/bin/qemu-arm-static
+COPY --from=builder /usr/local /usr/local
+COPY --from=builder /etc/localtime /etc/localtime
+COPY --from=builder /etc/timezone /etc/timezone
+COPY --from=builder /etc/apt/sources.list.d /etc/apt/sources.list.d
+
+RUN set -x \
+  && apt-get update \
+  && apt-get install --yes --no-install-recommends \
+       build-essential \
+       cmake \
+       ninja-build \
+       pkg-config \
+       gdb \
+       gdbserver \
+       valgrind \
+  && rm -rf /var/lib/apt/lists/*
+
+ENV LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/local/lib"
+
+ENTRYPOINT ["dumb-init", "--"]
+CMD [ "/bin/bash" ]
+
+ONBUILD ARG USERID=1000
+ONBUILD RUN set -x \
+  && useradd -u "$USERID" -ms /bin/bash user
+
+# unused
+ARG DISTRIB_ID=
+ARG SYS=
+ARG ABI=
+ARG MARCH=
+ARG HOSTMARCH=
+ARG ID=
+ARG VARIANT=

assets/projects/cmake/builder-template.mk

@@ -0,0 +1,106 @@
+SHELL := /bin/sh
+MAKEFILE := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
+MAKEFLAGS += --no-builtin-rules
+
+.SUFFIXES:
+
+.PHONY: default
+default: all
+
+#######################################################################################################################
+# Overridable project defaults
+
+DOBUILD_TOPDIR ?= $(DOBUILDDIR)
+DOBUILD_PROJECTDIR ?= $(patsubst %/,%,$(dir $(MAKEFILE)))
+DOBUILD_PROJECTVERSIONFILE ?= $(DOBUILDDIR)/VERSION
+
+PROJECTDIR = $(DOBUILD_PROJECTDIR)
+DOBUILDDIR ?= $(PROJECTDIR)/../../..
+
+include $(DOBUILDDIR)/defaults.mk
+
+#######################################################################################################################
+# Project defaults and macros
+
+DEFAULTTARGET = x86_64-alpine@3.10+builder-template
+
+FETCH_TARGETS =
+FETCHDIR = $(BUILDDIR)/.deps
+
+#######################################################################################################################
+# Project dependencies
+
+DUMB_INIT_VERSION = 1.2.2
+IMAGE_BUILDARGS += DUMB_INIT_VERSION=$(DUMB_INIT_VERSION)
+IMAGE_BUILDARGS += DUMB_INIT_MTIME=$(call mtime,$(FETCHDIR)/dumb-init-$(DUMB_INIT_VERSION).tar.gz)
+FETCH_TARGETS += $(FETCHDIR)/dumb-init-$(DUMB_INIT_VERSION).tar.gz
+$(FETCHDIR)/dumb-init-$(DUMB_INIT_VERSION).tar.gz: URL = https://github.com/Yelp/dumb-init/archive/v$(DUMB_INIT_VERSION).tar.gz
+$(SKIP_MD5SUM)$(FETCHDIR)/dumb-init-$(DUMB_INIT_VERSION).tar.gz: MD5 = 6166084b05772cdcf615a762c6f3b32e
+
+QEMU_VERSION = v3.1.0-2
+IMAGE_BUILDARGS += QEMU_VERSION_=$(QEMU_VERSION)
+FETCH_TARGETS += $(FETCHDIR)/qemu-arm-static-$(QEMU_VERSION)
+$(FETCHDIR)/qemu-arm-static-$(QEMU_VERSION): URL = https://github.com/multiarch/qemu-user-static/releases/download/$(QEMU_VERSION)/qemu-arm-static
+$(SKIP_MD5SUM)$(FETCHDIR)/qemu-arm-static-$(QEMU_VERSION): MD5 = 8ebd24e63fdfa07c557d45373bd831b1
+
+#######################################################################################################################
+# Architecture-specific rule target configuration
+
+DOCKER_TARGETS += $(call target_properties_combine,\
+    ,\
+    x86_64 arm32v7,\
+    ubuntu@xenial ubuntu@bionic alpine@3.9 alpine@3.10,\
+    ,\
+    ,\
+    builder-template,\
+    ,\
+    \
+  )
+
+#######################################################################################################################
+# Common rule target configuration
+
+CURLFLAGS += -s
+
+OUTDIRS += $(OUTDIR)/src
+OUTDIRS += $(OUTDIR)/bin
+
+EXTRACT_TARGETS += $(OUTDIR)/bin/qemu-arm-static-$(QEMU_VERSION)
+EXTRACT_TARGETS += $(patsubst $(FETCHDIR)/%.tar.gz,$(OUTDIR)/src/%,$(FETCH_TARGETS))
+
+#######################################################################################################################
+# Makefile dependencies
+
+MAKEFILE_DEPS += gzip
+MAKEFILE_DEPS += tar
+MAKEFILE_DEPS += chmod
+MAKEFILE_DEPS += touch
+MAKEFILE_DEPS += cp
+MAKEFILE_DEPS += mkdir
+
+#######################################################################################################################
+# Rules
+
+include $(DOBUILDDIR)/docker.mk
+include $(DOBUILDDIR)/standardrules.mk
+
+$(FETCH_TARGETS): | $(FETCHDIR)
+	$(SILENT)$(call curl,$@,$(URL),$(MD5))
+
+$(OUTDIR)/bin/qemu-arm-static-$(QEMU_VERSION) : $(FETCHDIR)/qemu-arm-static-$(QEMU_VERSION) | $(OUTDIRS)
+	$(SILENT) \
+	     $(call echo_if_silent_cmd,cp $< $@) \
+	  && cp $< $@ \
+	  && chmod +x $@
+
+$(OUTDIR)/src/%: $(FETCHDIR)/%.tar.gz | $(OUTDIRS)
+	$(SILENT) \
+	     $(call echo_if_silent_cmd,tar -C $(dir $@) -xf $<) \
+	  && tar -I 'gzip -n' -C $(dir $@) -xf $< \
+	  && touch $@
+
+$(FETCHDIR):
+	$(SILENT)mkdir -p $@
+
+.DELETE_ON_ERROR: $(FETCH_TARGETS)
+

assets/projects/cmake/x86_64-alpine-builder-template.dockerfile

@@ -0,0 +1,86 @@
+ARG REGISTRY_PREFIX=''
+ARG DISTRIB_VERSION=3.9
+
+FROM ${REGISTRY_PREFIX}alpine:${DISTRIB_VERSION} as builder
+
+ARG TZ=UTC
+ENV LANG=C.UTF-8
+ENV LC_ALL=${LANG}
+
+RUN set -x \
+  && installdeps="tzdata" \
+  && apk add --no-cache --virtual .install-deps $installdeps \
+  && ls /usr/share/zoneinfo \
+  && cp -H --remove-destination "/usr/share/zoneinfo/$TZ" /tmp/localtime \
+  && apk del .install-deps \
+  && mv /tmp/localtime /etc/localtime \
+  && echo "$TZ" > /etc/timezone \
+  && apk add --no-cache \
+       bash \
+       make \
+       gcc \
+       musl-dev
+
+COPY src /usr/local/src
+
+ARG PARALLELMFLAGS=-j2
+
+ARG DUMB_INIT_VERSION=1.2.2
+ARG DUMB_INIT_MTIME=
+RUN set -x \
+  && builddeps="vim" \
+  && apk add --no-cache --virtual .build-deps $builddeps \
+  && [ -n "$DUMB_INIT_MTIME" ] && export SOURCE_DATE_EPOCH="$DUMB_INIT_MTIME" \
+  && builddir="/tmp/out" \
+  && mkdir -p "$builddir" \
+  && cd "$builddir" \
+  && cp -R "/usr/local/src/dumb-init-$DUMB_INIT_VERSION" . \
+  && cd "dumb-init-$DUMB_INIT_VERSION" \
+  && make "$PARALLELMFLAGS" \
+  && chmod +x dumb-init \
+  && mv dumb-init /usr/local/bin/dumb-init \
+  && dumb-init --version \
+  && rm -rf "$builddir" \
+  && apk del .build-deps
+
+FROM ${REGISTRY_PREFIX}alpine:${DISTRIB_VERSION}
+
+ARG TZ=UTC
+ENV LANG=C.UTF-8
+ENV LC_ALL=${LANG}
+
+COPY --from=builder /usr/local /usr/local
+COPY --from=builder /etc/localtime /etc/localtime
+COPY --from=builder /etc/timezone /etc/timezone
+
+RUN set -x \
+  && apk add --no-cache \
+       coreutils \
+       gcc \
+       g++ \
+       make \
+       cmake \
+       ninja \
+       pkgconf \
+       gdb \
+       valgrind
+
+ENV LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/local/lib"
+ENV PKG_CONFIG_PATH=/usr/local/lib64/pkgconfig
+
+ENTRYPOINT ["dumb-init", "--"]
+CMD [ "/bin/sh" ]
+
+ONBUILD ARG USERID=1000
+ONBUILD RUN set -x \
+  && adduser -u "$USERID" -s /bin/bash -D user
+
+# unused
+ARG DISTRIB_ID=
+ARG SYS=
+ARG ABI=
+ARG MARCH=
+ARG HOSTMARCH=
+ARG ID=
+ARG VARIANT=
+ARG QEMU_VERSION_=

assets/projects/cmake/x86_64-ubuntu-builder-template.dockerfile

@@ -0,0 +1,88 @@
+ARG REGISTRY_PREFIX=''
+ARG DISTRIB_VERSION=bionic
+
+FROM ${REGISTRY_PREFIX}ubuntu:${DISTRIB_VERSION} as builder
+
+ARG TZ=UTC
+ENV LANG=C.UTF-8
+ENV LC_ALL=${LANG}
+
+RUN set -x \
+  && installdeps="tzdata" \
+  && apt-get update \
+  && apt-get install --yes --no-install-recommends $installdeps \
+  && ls /usr/share/zoneinfo \
+  && cp -H --remove-destination "/usr/share/zoneinfo/$TZ" /tmp/localtime \
+  && { apt-get purge -y $installdeps || true; } \
+  && mv /tmp/localtime /etc/localtime \
+  && echo "$TZ" > /etc/timezone \
+  && apt-get update \
+  && apt-get install --yes --no-install-recommends \
+       build-essential \
+  && rm -rf /var/lib/apt/lists/*
+
+COPY src /usr/local/src
+
+ARG PARALLELMFLAGS=-j2
+
+ARG DUMB_INIT_VERSION=1.2.2
+ARG DUMB_INIT_MTIME=
+RUN set -x \
+  && builddeps="vim-common" \
+  && apt-get update \
+  && apt-get install --yes --no-install-recommends $builddeps  \
+  && rm -rf /var/lib/apt/lists/* \
+  && [ -n "$DUMB_INIT_MTIME" ] && export SOURCE_DATE_EPOCH="$DUMB_INIT_MTIME" \
+  && builddir="/tmp/out" \
+  && mkdir -p "$builddir" \
+  && cd "$builddir" \
+  && cp -R "/usr/local/src/dumb-init-$DUMB_INIT_VERSION" . \
+  && cd "dumb-init-$DUMB_INIT_VERSION" \
+  && make "$PARALLELMFLAGS" \
+  && chmod +x dumb-init \
+  && mv dumb-init /usr/local/bin/dumb-init \
+  && dumb-init --version \
+  && rm -rf "$builddir" \
+  && apt-get purge -y $builddeps
+
+FROM ${REGISTRY_PREFIX}ubuntu:${DISTRIB_VERSION}
+
+ARG TZ=UTC
+ENV LANG=C.UTF-8
+ENV LC_ALL=${LANG}
+
+COPY --from=builder /usr/local /usr/local
+COPY --from=builder /etc/localtime /etc/localtime
+COPY --from=builder /etc/timezone /etc/timezone
+COPY --from=builder /etc/apt/sources.list.d /etc/apt/sources.list.d
+
+RUN set -x \
+  && apt-get update \
+  && apt-get install --yes --no-install-recommends \
+       build-essential \
+       cmake \
+       ninja-build \
+       pkg-config \
+       gdb \
+       gdbserver \
+       valgrind \
+  && rm -rf /var/lib/apt/lists/*
+
+ENV LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/local/lib"
+
+ENTRYPOINT ["dumb-init", "--"]
+CMD [ "/bin/bash" ]
+
+ONBUILD ARG USERID=1000
+ONBUILD RUN set -x \
+  && useradd -u "$USERID" -ms /bin/bash user
+
+# unused
+ARG DISTRIB_ID=
+ARG SYS=
+ARG ABI=
+ARG MARCH=
+ARG HOSTMARCH=
+ARG VARIANT=
+ARG ID=
+ARG QEMU_VERSION_=

assets/projects/dobuild/builder-template.mk

@@ -0,0 +1,120 @@
+SHELL := /bin/sh
+MAKEFILE := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
+MAKEFLAGS += --no-builtin-rules
+
+.SUFFIXES:
+
+.PHONY: default
+default: all
+
+#######################################################################################################################
+# Overridable project defaults
+
+DOBUILD_TOPDIR ?= $(DOBUILDDIR)
+DOBUILD_PROJECTDIR ?= $(patsubst %/,%,$(dir $(MAKEFILE)))
+DOBUILD_PROJECTVERSIONFILE ?= $(DOBUILDDIR)/VERSION
+
+PROJECTDIR = $(DOBUILD_PROJECTDIR)
+DOBUILDDIR ?= $(PROJECTDIR)/../../..
+
+include $(DOBUILDDIR)/defaults.mk
+
+#######################################################################################################################
+# Project defaults and macros
+
+DEFAULTTARGET = x86_64-alpine@3.10+builder-template
+
+FETCH_TARGETS =
+FETCHDIR = $(BUILDDIR)/.deps
+
+#######################################################################################################################
+# Project dependencies
+
+DUMB_INIT_VERSION = 1.2.2
+IMAGE_BUILDARGS += DUMB_INIT_VERSION=$(DUMB_INIT_VERSION)
+IMAGE_BUILDARGS += DUMB_INIT_MTIME=$(call mtime,$(FETCHDIR)/dumb-init-$(DUMB_INIT_VERSION).tar.gz)
+FETCH_TARGETS += $(FETCHDIR)/dumb-init-$(DUMB_INIT_VERSION).tar.gz
+$(FETCHDIR)/dumb-init-$(DUMB_INIT_VERSION).tar.gz: URL = https://github.com/Yelp/dumb-init/archive/v$(DUMB_INIT_VERSION).tar.gz
+$(SKIP_MD5SUM)$(FETCHDIR)/dumb-init-$(DUMB_INIT_VERSION).tar.gz: MD5 = 6166084b05772cdcf615a762c6f3b32e
+
+DOCKER_VERSION = 18.09.6
+IMAGE_BUILDARGS += DOCKER_VERSION=$(DOCKER_VERSION)
+FETCH_TARGETS += $(FETCHDIR)/docker-$(DOCKER_VERSION)-x86_64.tgz
+$(FETCHDIR)/docker-$(DOCKER_VERSION)-x86_64.tgz: URL = https://download.docker.com/linux/static/stable/x86_64/docker-$(DOCKER_VERSION).tgz
+$(SKIP_MD5SUM)$(FETCHDIR)/docker-$(DOCKER_VERSION)-x86_64.tgz: MD5 = a6be1e734421d05abfc4d3e28997e271
+
+#######################################################################################################################
+# Architecture-specific rule target configuration
+
+DOCKER_TARGETS += $(call target_properties_combine,\
+    ,\
+    x86_64,\
+    alpine@3.9 alpine@3.10,\
+    ,\
+    ,\
+    builder-template,\
+    ,\
+    \
+  )
+
+#######################################################################################################################
+# Common rule target configuration
+
+CURLFLAGS += -s
+
+OUTDIRS += $(OUTDIR)/src
+OUTDIRS += $(OUTDIR)/bin
+OUTDIRS += $(OUTDIR)/src/docker-$(DOCKER_VERSION)-x86_64
+OUTDIRS += $(OUTDIR)/assets/ca-certificates
+
+EXTRACT_TARGETS += $(patsubst $(FETCHDIR)/%.tar.gz,$(OUTDIR)/src/%,$(FETCH_TARGETS))
+EXTRACT_TARGETS += $(patsubst $(DOBUILDDIR)/%,$(OUTDIR)/%,$(wildcard $(DOBUILDDIR)/assets/ca-certificates/*.crt))
+EXTRACT_TARGETS += $(OUTDIR)/bin/docker-$(DOCKER_VERSION)-x86_64
+
+#######################################################################################################################
+# Makefile dependencies
+
+MAKEFILE_DEPS += gzip
+MAKEFILE_DEPS += tar
+MAKEFILE_DEPS += chmod
+MAKEFILE_DEPS += touch
+MAKEFILE_DEPS += cp
+MAKEFILE_DEPS += mkdir
+
+#######################################################################################################################
+# Rules
+
+include $(DOBUILDDIR)/docker.mk
+include $(DOBUILDDIR)/standardrules.mk
+
+$(FETCH_TARGETS): | $(FETCHDIR)
+	$(SILENT)$(call curl,$@,$(URL),$(MD5))
+
+$(OUTDIR)/assets/ca-certificates/%.crt : $(DOBUILDDIR)/assets/ca-certificates/%.crt | $(OUTDIRS)
+	cp $< $@
+
+$(OUTDIR)/bin/docker-$(DOCKER_VERSION)-x86_64 : $(OUTDIR)/src/docker-$(DOCKER_VERSION)-x86_64/docker/docker
+	$(SILENT) \
+	     $(call echo_if_silent_cmd,cp $< $@) \
+	  && cp $< $@ \
+	  && chmod +x $@
+
+$(OUTDIR)/src/docker-$(DOCKER_VERSION)-x86_64/docker/docker: $(OUTDIR)/src/docker-$(DOCKER_VERSION)-x86_64/docker
+
+$(OUTDIR)/src/docker-$(DOCKER_VERSION)-x86_64/docker: $(FETCHDIR)/docker-$(DOCKER_VERSION)-x86_64.tgz | $(OUTDIRS)
+	$(SILENT) \
+	     $(call echo_if_silent_cmd,tar -C $(dir $@) -xf $<) \
+	  && tar -I 'gzip -n' -C $(dir $@) -xf $< \
+	  && touch $@
+
+$(OUTDIR)/src/%: $(FETCHDIR)/%.tar.gz | $(OUTDIRS)
+	$(SILENT) \
+	     $(call echo_if_silent_cmd,tar -C $(dir $@) -xf $<) \
+	  && tar -I 'gzip -n' -C $(dir $@) -xf $< \
+	  && touch $@
+
+$(FETCHDIR):
+	$(SILENT)mkdir -p $@
+
+.DELETE_ON_ERROR: $(FETCH_TARGETS)
+

assets/projects/dobuild/x86_64-alpine-builder-template.dockerfile

@@ -0,0 +1,90 @@
+ARG REGISTRY_PREFIX=''
+ARG DISTRIB_VERSION=3.9
+
+FROM ${REGISTRY_PREFIX}alpine:${DISTRIB_VERSION} as builder
+
+ARG MARCH=x86_64
+
+ARG TZ=UTC
+ENV LANG=C.UTF-8
+ENV LC_ALL=${LANG}
+
+RUN set -x \
+  && installdeps="tzdata" \
+  && apk add --no-cache --virtual .install-deps $installdeps \
+  && ls /usr/share/zoneinfo \
+  && cp -H --remove-destination "/usr/share/zoneinfo/$TZ" /tmp/localtime \
+  && apk del .install-deps \
+  && mv /tmp/localtime /etc/localtime \
+  && echo "$TZ" > /etc/timezone \
+  && apk add --no-cache \
+       bash \
+       make \
+       gcc \
+       musl-dev
+
+COPY src /usr/local/src
+
+ARG PARALLELMFLAGS=-j2
+
+ARG DUMB_INIT_VERSION=1.2.2
+ARG DUMB_INIT_MTIME=
+RUN set -x \
+  && builddeps="vim" \
+  && apk add --no-cache --virtual .build-deps $builddeps \
+  && [ -n "$DUMB_INIT_MTIME" ] && export SOURCE_DATE_EPOCH="$DUMB_INIT_MTIME" \
+  && builddir="/tmp/out" \
+  && mkdir -p "$builddir" \
+  && cd "$builddir" \
+  && cp -R "/usr/local/src/dumb-init-$DUMB_INIT_VERSION" . \
+  && cd "dumb-init-$DUMB_INIT_VERSION" \
+  && make "$PARALLELMFLAGS" \
+  && chmod +x dumb-init \
+  && mv dumb-init /usr/local/bin/dumb-init \
+  && dumb-init --version \
+  && rm -rf "$builddir" \
+  && apk del .build-deps
+
+ARG DOCKER_VERSION=17.06.0-ce
+ARG DOCKER_MARCH=$MARCH
+COPY bin/docker-$DOCKER_VERSION-$DOCKER_MARCH /usr/local/bin/docker
+
+FROM ${REGISTRY_PREFIX}alpine:${DISTRIB_VERSION}
+
+ARG TZ=UTC
+ENV LANG=C.UTF-8
+ENV LC_ALL=${LANG}
+
+ARG CAPATH="./assets/ca-certificates"
+COPY $CAPATH /usr/local/share/ca-certificates
+COPY --from=builder /usr/local /usr/local
+COPY --from=builder /etc/localtime /etc/localtime
+COPY --from=builder /etc/timezone /etc/timezone
+
+RUN set -x \
+  && apk add --no-cache \
+       make \
+       gzip \
+       git \
+       curl \
+       openssl \
+       ca-certificates \
+  && update-ca-certificates
+
+ENV LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/local/lib"
+
+ENTRYPOINT ["dumb-init", "--"]
+CMD [ "/bin/sh" ]
+
+ONBUILD ARG USERID=1000
+ONBUILD RUN set -x \
+  && adduser -u "$USERID" -s /bin/bash -D user
+
+# unused
+ARG DISTRIB_ID=
+ARG SYS=
+ARG ABI=
+ARG MARCH=
+ARG HOSTMARCH=
+ARG ID=
+ARG VARIANT=

assets/projects/gradle/builder-template.mk

@@ -0,0 +1,88 @@
+SHELL := /bin/sh
+MAKEFILE := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
+MAKEFLAGS += --no-builtin-rules
+
+.SUFFIXES:
+
+.PHONY: default
+default: all
+
+#######################################################################################################################
+# Overridable project defaults
+
+DOBUILD_TOPDIR ?= $(DOBUILDDIR)
+DOBUILD_PROJECTDIR ?= $(patsubst %/,%,$(dir $(MAKEFILE)))
+DOBUILD_PROJECTVERSIONFILE ?= $(DOBUILDDIR)/VERSION
+DOBUILD_DOCKERFILE ?= $(PROJECTDIR)/%MARCH%-%DISTRIB_ID%.dockerfile
+
+PROJECTDIR = $(DOBUILD_PROJECTDIR)
+DOBUILDDIR ?= $(PROJECTDIR)/../../..
+
+include $(DOBUILDDIR)/defaults.mk
+
+#######################################################################################################################
+# Project defaults and macros
+
+DEFAULTTARGET = x86_64-graalvm~-ce@20.0.0-linux-java11+6.3
+
+FETCH_TARGETS =
+FETCHDIR = $(BUILDDIR)/.deps
+
+dobuild_image_prerequisites = %OUTDIR%/bin/gradle-%ID%
+
+#######################################################################################################################
+# Project dependencies
+
+FETCH_TARGETS += $(FETCHDIR)/gradle-6.3.zip
+$(FETCHDIR)/gradle-6.3.zip: URL = https://services.gradle.org/distributions/gradle-6.3-bin.zip
+$(SKIP_MD5SUM)$(FETCHDIR)/gradle-6.3.zip: MD5 = 737c68904f35e6480fa013b1eb3c9c50
+
+FETCH_TARGETS += $(FETCHDIR)/gradle-5.6.zip
+$(FETCHDIR)/gradle-5.6.zip: URL = https://services.gradle.org/distributions/gradle-5.6-bin.zip
+$(SKIP_MD5SUM)$(FETCHDIR)/gradle-5.6.zip: MD5 = 2dde6806b36fe0832a7438752be6ed36
+
+#######################################################################################################################
+# Architecture-specific rule target configuration
+
+DOCKER_TARGETS += $(call target_properties_combine,\
+    ,\
+    x86_64,\
+    graalvm~-ce,\
+    linux,\
+    java11 java8,\
+    6.3 5.6,\
+    20.0.0,\
+    \
+  )
+
+#######################################################################################################################
+# Common rule target configuration
+
+CURLFLAGS += -s
+
+OUTDIRS += $(OUTDIR)/bin
+
+#######################################################################################################################
+# Makefile dependencies
+
+MAKEFILE_DEPS += unzip
+
+#######################################################################################################################
+# Rules
+
+include $(DOBUILDDIR)/docker.mk
+include $(DOBUILDDIR)/standardrules.mk
+
+$(FETCH_TARGETS): | $(FETCHDIR)
+	$(SILENT)$(call curl,$@,$(URL),$(MD5))
+
+$(OUTDIR)/bin/%: $(FETCHDIR)/%.zip | $(OUTDIRS)
+	$(SILENT) \
+	     $(call echo_if_silent_cmd,unzip -d $(dir $@) $<) \
+	  && unzip -o -d $(dir $@) $< \
+	  && touch $@
+
+$(FETCHDIR):
+	$(SILENT)mkdir -p $@
+
+.DELETE_ON_ERROR: $(FETCH_TARGETS)

assets/projects/gradle/x86_64-graalvm-ce.dockerfile

@@ -0,0 +1,33 @@
+ARG REGISTRY_PREFIX=''
+ARG SYS
+ARG ABI
+ARG DISTRIB_ID
+ARG DISTRIB_VERSION
+
+FROM ${REGISTRY_PREFIX}oracle/${DISTRIB_ID}:${DISTRIB_VERSION}-${ABI}
+
+RUN set -x \
+  && gu install native-image
+
+ARG ID
+ARG GRADLE_HOME=/usr/local/lib/gradle-${ID}
+COPY bin/gradle-${ID} $GRADLE_HOME
+ENV PATH=$PATH:$GRADLE_HOME/bin
+
+RUN set -x \
+  && java -version \
+  && javac -version \
+  && native-image --version \
+  && gradle --version
+
+ARG TZ=UTC
+ENV LANG=C
+ENV LC_ALL=${LANG}
+
+CMD [ "/bin/bash" ]
+
+# unused
+ARG PARALLELMFLAGS=
+ARG MARCH=
+ARG HOSTMARCH=
+ARG VARIANT=

assets/run_image.sh.template

@@ -0,0 +1,50 @@
+#!/bin/sh
+
+set -e
+
+DOCKER="${DOCKER:-%DOCKER%}"
+IMAGE="%IMAGE%"
+NETWORK="${NETWORK:-host}"
+PROJECTDIR="${PROJECTDIR:-%PROJECTDIR%}"
+DOBUILDDIR="${DOBUILDDIR:-%DOBUILDDIR%}"
+ENTRYPOINT="${ENTRYPOINT:-%RUNCMD%}"
+PATH="${DOBUILDDIR}/bin:$PATH"
+
+set -- --entrypoint "$ENTRYPOINT" "$IMAGE" "$@"
+set -- --network "$NETWORK" --workdir "$PWD" "$@"
+
+if [ -n "$USERID" ]; then
+  set -- --user "$USERID:$USERID" "$@"
+fi
+
+if [ -n "$PID" ]; then
+  set -- --pid "$PID" "$@"
+fi
+
+if [ -n "$CONTAINER_CGROUP_PARENT" ]; then
+  set -- --cgroup-parent "$CONTAINER_CGROUP_PARENT" "$@"
+fi
+
+HOST_CONTAINER="${HOST_CONTAINER:-"$(get_container_id.sh)"}" || true
+if [ -n "$HOST_CONTAINER" ]; then
+  set -- --volumes-from "$HOST_CONTAINER" "$@"
+else
+  set -- --volume "$PROJECTDIR:$PROJECTDIR:cached" "$@"
+fi
+
+set -- %RUNFLAGS% "$@"
+
+if [ -t 0 ] && ! is_running_in_bg.sh $$; then
+  set -- --interactive "$@"
+fi
+
+# if STDIN piped or redirected
+if [ -p /dev/stdin ] || { [ ! -t 0 ] && [ ! -p /dev/stdin ]; }; then
+  set -- --interactive "$@"
+elif [ -t 1 ]; then
+  set -- --tty "$@"
+fi
+
+set -- --rm "$@"
+
+exec "$DOCKER" run "$@"

assets/templates/cmake.properties.template

@@ -0,0 +1,3 @@
+CMAKE_GENERATOR='%CMAKE_GENERATOR%'
+CMAKE_GENERATOR_NAME='%CMAKE_GENERATOR_CMD%'
+CMAKE_GENERATOR_CMD='%CMAKE_GENERATOR_CMD%'

assets/templates/md5sum.txt.template

@@ -0,0 +1 @@
+%MD5%  %FILE%

assets/templates/properties.template

@@ -0,0 +1,17 @@
+TARGET='%TARGET%'
+NPROC="$DOBUILD_NPROC"
+VERBOSE="$DOBUILD_VERBOSE"
+BUILDVERBOSE="$DOBUILD_BUILDVERBOSE"
+TESTVERBOSE="$DOBUILD_TESTVERBOSE"
+PROJECTDIR='%PROJECTDIR%'
+DOBUILDDIR='%DOBUILDDIR%'
+HOSTMARCH='%HOSTMARCH%'
+MARCH='%MARCH%'
+DISTRIB='%DISTRIB%'
+DISTRIB_ID='%DISTRIB_ID%'
+DISTRIB_VERSION='%DISTRIB_VERSION%'
+SYS='%SYS%'
+ABI='%ABI%'
+ID='%ID%'
+VARIANT='%VARIANT%'
+BUILD_TESTING='%BUILD_TESTING%'

bin/container_run

@@ -0,0 +1,95 @@
+#!/bin/sh
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+set -e
+
+enabled() {
+  { [ "$1" -ne 0 ] || [ "$1" = 'true' ]; } 2>/dev/null
+}
+
+physical_pwd() {
+  pwd -P 2>/dev/null || pwd
+}
+
+try_canonicalize() {
+  readlink -f "$@" 2>/dev/null || realpath "$@"
+}
+
+canonicalize() {
+  if ! try_canonicalize "$1" 2>/dev/null; then
+    echo "$(cd "$(dirname "$1")" && physical_pwd)/$(basename "$1")"
+  fi
+}
+
+scriptdir() {
+  dirname "$(canonicalize "${BASH_SOURCE:-$1}")"
+}
+
+DOBUILDDIR="${DOBUILDDIR:-"$(dirname "$(scriptdir "$0")")"}"
+PATH="$DOBUILDDIR/bin:$PATH"
+
+DOCKER="${DOCKER:-docker}"
+USERID="${DOBUILD_USERID:-$(id -u)}"
+HOSTENVFILTER="^DOCKER_\|_proxy=\|^SOURCE_DATE_EPOCH=${DOBUILD_HOSTENVFILTER:+\|$DOBUILD_HOSTENVFILTER}"
+
+ENVFLAGS="$(printenv | grep -e "$HOSTENVFILTER" | sed -n -e 's/\([^=]*\)=.*/-e \1/p')" || true
+#shellcheck disable=SC2086
+set -- $ENVFLAGS "$@"
+
+set -- --user "$USERID:$USERID" "$@"
+
+if [ -n "$DOBUILD_CGROUPPARENT" ]; then
+  set -- --cgroup-parent "$DOBUILD_CGROUPPARENT" "$@"
+fi
+
+HOST_TZ="${DOBUILD_HOSTTZ:-1}"
+if enabled "$HOST_TZ"; then
+  set -- -v "/etc/timezone:/etc/timezone:ro" "$@"
+  set -- -v "/etc/localtime:/etc/localtime:ro" "$@"
+fi
+
+HOST_CONTAINER="${DOBUILD_HOSTCONTAINER:-"$(get_container_id.sh)"}" || true
+if [ -n "$HOST_CONTAINER" ]; then
+  set -- --volumes-from "$HOST_CONTAINER" "$@"
+elif [ -n "$DOBUILD_PROJECTDIR" ]; then
+  PROJECTDIR="$(canonicalize "$DOBUILD_PROJECTDIR")"
+  set -- --volume "$PROJECTDIR:$PROJECTDIR:cached" "$@"
+fi
+
+# setup options for connection to docker host
+DOCKERSOCK="$(echo "$DOCKER_HOST" | sed -ne 's/^unix:\/\/\(.*\)/\1/p')"
+if [ -S "$DOCKERSOCK" ]; then
+  DOCKERSOCK_GROUP="$(stat -c '%g' "$DOCKERSOCK")"
+  set -- -e DOCKERSOCK_GROUP="$DOCKERSOCK_GROUP" --group-add "$DOCKERSOCK_GROUP" --volume "$DOCKERSOCK:$DOCKERSOCK" "$@"
+elif [ -n "$DOCKER_HOST" ]; then
+  # select the network to reach the daemon
+  if [ -n "$HOST_CONTAINER" ] && [ -z "${DOBUILD_NETWORK+x}" ]; then
+    set -- --network "$("$DOCKER" inspect --format='{{.HostConfig.NetworkMode}}' "$HOST_CONTAINER")" "$@"
+  else
+    DOBUILD_NETWORK="${DOBUILD_NETWORK:-host}"
+    set -- --network "$DOBUILD_NETWORK" "$@"
+  fi
+fi
+
+if [ -t 0 ] && ! is_running_in_bg.sh $$; then
+  set -- --interactive "$@"
+fi
+
+# if STDIN piped or redirected
+if [ -p /dev/stdin ] || { [ ! -t 0 ] && [ ! -p /dev/stdin ]; }; then
+  set -- --interactive "$@"
+elif [ -t 1 ]; then
+  set -- --tty "$@"
+fi
+
+set -- "$DOCKER" run --rm "$@"
+
+exec "$@"

bin/dobuild

@@ -0,0 +1,240 @@
+#!/bin/sh
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+set -e
+
+physical_pwd() {
+  pwd -P 2>/dev/null || pwd
+}
+
+try_canonicalize() {
+  readlink -f "$@" 2>/dev/null || realpath "$@"
+}
+
+canonicalize() {
+  if ! try_canonicalize "$1" 2>/dev/null; then
+    echo "$(cd "$(dirname "$1")" && physical_pwd)/$(basename "$1")"
+  fi
+}
+
+scriptdir() {
+  dirname "$(canonicalize "${BASH_SOURCE:-$1}")"
+}
+
+template_subst() {
+  sed \
+    -e "s!%MARCH%!${MARCH}!g" \
+    -e "s!%DISTRIB%!${DISTRIB}!g" \
+    -e "s!%REGISTRY_PREFIX%!${REGISTRY_PREFIX}!g"
+}
+
+mktemp_dockerfile() {
+  mkdir -p "$1"
+  echo "$1/dobuild_generated.dockerfile"
+}
+
+findonly_file() {
+  workingdir="$1"
+  name="$2"
+  filter="$3"
+  
+    find "$workingdir" -maxdepth 1 -type f -name "$name" \
+  | grep "^${workingdir}/${filter}" \
+  | {
+      firstfound=
+      lastfound=
+
+      while IFS= read -r line; do
+        firstfound="${firstfound:-$line}"
+        lastfound="$line"
+      done
+      
+      if [ "$firstfound" != "$lastfound" ]; then
+        printf 'error: more than one match found for %s in %s using filter %s\n' "$name" "$workingdir" "$filter" 1>&2
+        return 3
+      fi
+      
+      echo "$firstfound"
+    }
+}
+
+export LANG=C
+export LC_ALL=C
+
+DOBUILDDIR="${DOBUILDDIR:-"$(dirname "$(scriptdir "$0")")"}"
+MAKE="${MAKE:-$(command -v make)}"
+PATH="$DOBUILDDIR/bin:$PATH"
+
+set -- "$@" --
+
+FILTER="$DOBUILD_FILTER"
+WORKINGDIR=
+MAKEFILE=
+DISTRIB=
+MARCH=
+IMAGE=
+
+while :; do
+  case $1 in
+    -f|--file|--makefile)
+      if [ "$2" != '--' ]; then
+        MAKEFILE="${MAKEFILE:-$2}"
+        set -- "$@" "$1" "$2"
+        shift
+      else
+        printf 'error: "%s" requires a non-empty option argument.\n' "$1" >&2
+        exit 3
+      fi
+      ;;
+    --file=|--makefile=)
+      printf 'error: "%s" requires a non-empty option argument.\n' "$1" >&2
+      exit 3
+      ;;
+    --file=?*|--makefile=?*)
+      MAKEFILE="${MAKEFILE:-${1#*=}}"
+      set -- "$@" "$1"
+      ;;
+    -C|--directory)
+      if [ "$2" != '--' ]; then
+        WORKINGDIR="$2"
+        shift
+      else
+        printf 'error: "%s" requires a non-empty option argument.\n' "$1" >&2
+        exit 3
+      fi
+      ;;
+    --directory=)
+      printf 'error: "%s" requires a non-empty option argument.\n' "$1" >&2
+      exit 3
+      ;;
+    --directory=?*)
+      WORKINGDIR="${1#*=}"
+      ;;
+    --dockerfile)
+      if [ "$2" != '--' ]; then
+        DOCKERFILE="$2"
+        shift
+      else
+        printf 'warning: "%s" ignored, requires a non-empty option argument.\n' "$1" >&2
+      fi
+      ;;
+    --dockerfile=)
+      printf 'warning: "%s" ignored, requires a non-empty option argument.\n' "$1" >&2
+      ;;
+    --dockerfile=?*|DOCKERFILE=?*)
+      DOCKERFILE="${1#*=}"
+      ;;
+    --image)
+      if [ "$2" != '--' ]; then
+        IMAGE="$2"
+        shift
+      else
+        printf 'error: "%s" requires a non-empty option argument.\n' "$1" >&2
+        exit 3
+      fi
+      ;;
+    --image=)
+      printf 'error: "%s" requires a non-empty option argument.\n' "$1" >&2
+      exit 3
+      ;;
+    --image=?*|IMAGE=?*)
+      IMAGE="${1#*=}"
+      ;;
+    --filter)
+      if [ "$2" != '--' ]; then
+        FILTER="$2"
+        set -- "$@" "FILTER=$FILTER"
+        shift
+      else
+        printf 'warning: "%s" ignored, requires a non-empty option argument.\n' "$1" >&2
+      fi
+      ;;
+    --filter=)
+      printf 'warning: "%s" ignored, requires a non-empty option argument.\n' "$1" >&2
+      ;;
+    --filter=?*|FILTER=?*)
+      FILTER="${1#*=}"
+      set -- "$@" "FILTER=$FILTER"
+      ;;
+    MARCH=?*)
+      MARCH="${1#*=}"
+      ;;
+    DISTRIB=?*)
+      DISTRIB="${1#*=}"
+      ;;
+    PROJECTDIR=?*)
+      PROJECTDIR="${1#*=}"
+      ;;
+    --)
+      shift
+      break
+      ;;
+    *)
+      set -- "$@" "$1"
+      ;;
+  esac
+
+  shift
+done
+
+if [ -n "$WORKINGDIR" ]; then
+  cd "$WORKINGDIR"
+fi
+
+PROJECTDIR="${DOBUILD_PROJECTDIR:-.}"
+OUTDIR="${DOBUILD_OUTDIR:-$PROJECTDIR/.build}"
+DISTRIB_SUFFIX="${DISTRIB:+-${DISTRIB}}"
+MARCH_DISTRIB="${MARCH:-[^-]*}${DISTRIB_SUFFIX}"
+FILTER="${FILTER:-${MARCH_DISTRIB:+${MARCH_DISTRIB}-}[^.]*}"
+BUILD_DOCKERFILE="${DOCKERFILE:-$(findonly_file "$PROJECTDIR" '*.dockerfile' "$FILTER")}"
+BUILD_DOCKERFILE="${BUILD_DOCKERFILE:-$(find "$PROJECTDIR" -maxdepth 1 -type f -name 'Dockerfile')}" || true
+
+if [ -z "$MAKEFILE" ]; then
+  if [ -f "$PROJECTDIR/CMakeLists.txt" ]; then
+    set -- --file="$DOBUILDDIR/examples/cmake-gtest-example/Makefile" "$@"
+  elif [ -f "$PROJECTDIR/Makefile" ] || [ -f "$PROJECTDIR/makefile" ] || [ -f "$PROJECTDIR/GNUmakefile" ]; then
+    printf 'error: makefile project support not implemented.\n' >&2
+    exit 3
+  else
+    printf 'error: unknown project kind.\n' >&2
+    exit 3
+  fi
+fi
+
+set -- "$@" "PROJECTDIR=$PROJECTDIR" "DOBUILDDIR=$DOBUILDDIR" "OUTDIR=$OUTDIR"
+
+if [ -n "$IMAGE" ]; then
+  BUILD_DOCKERFILE="$(mktemp_dockerfile "$OUTDIR")"
+  
+  { \
+    echo "FROM %REGISTRY_PREFIX%${IMAGE}"; \
+    echo; \
+  } | template_subst > "$BUILD_DOCKERFILE"
+fi
+
+if [ -n "$BUILD_DOCKERFILE" ]; then
+  if [ "$BUILD_DOCKERFILE" = '-' ]; then
+    BUILD_DOCKERFILE="$(mktemp_dockerfile "$OUTDIR")"
+    template_subst > "$BUILD_DOCKERFILE"
+  fi
+
+  set -- "$@" "DOCKERFILE=$BUILD_DOCKERFILE"
+fi
+
+if [ -n "$MARCH" ]; then
+  set -- "$@" "MARCH=$MARCH"
+fi
+
+if [ -n "$DISTRIB" ]; then
+  set -- "$@" "DISTRIB=$DISTRIB"
+fi
+
+exec "$MAKE" "$@"

bin/docker_compose

@@ -0,0 +1,85 @@
+#!/bin/sh
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+set -e
+
+physical_pwd() {
+  pwd -P 2>/dev/null || pwd
+}
+
+try_canonicalize() {
+  readlink -f "$@" 2>/dev/null || realpath "$@"
+}
+
+canonicalize() {
+  if ! try_canonicalize "$1" 2>/dev/null; then
+    echo "$(cd "$(dirname "$1")" && physical_pwd)/$(basename "$1")"
+  fi
+}
+
+scriptdir() {
+  dirname "$(canonicalize "${BASH_SOURCE:-$1}")"
+}
+
+DOBUILDDIR="${DOBUILDDIR:-"$(dirname "$(scriptdir "$0")")"}"
+PATH="$DOBUILDDIR/bin:$PATH"
+
+DOBUILD_COMPOSEVERSION="${DOBUILD_COMPOSEVERSION:-1.24.0}"
+DOBUILD_COMPOSEIMAGE="${REGISTRY_PREFIX}docker/compose:${DOBUILD_COMPOSEVERSION}"
+DOBUILD_COMPOSEENTRYPOINT="${DOBUILD_COMPOSEENTRYPOINT:-docker-compose}"
+
+export DOBUILDDIR
+export DOBUILD_PROJECTDIR="${DOBUILD_COMPOSEPROJECTDIR:-"$PWD"}"
+export DOBUILD_HOSTENVFILTER="${DOBUILD_COMPOSEHOSTENVFILTER:-^COMPOSE}"
+
+set -- "$@" --
+
+WORKINGDIR=
+
+while :; do
+  case $1 in
+    --project-directory)
+      if [ "$2" != '--' ]; then
+        WORKINGDIR="$2"
+        shift
+      else
+        printf 'error: "%s" requires a non-empty option argument.\n' "$1" >&2
+        exit 3
+      fi
+      ;;
+    --project-directory=)
+      printf 'error: "%s" requires a non-empty option argument.\n' "$1" >&2
+      exit 3
+      ;;
+    --project-directory=?*)
+      WORKINGDIR="${1#*=}"
+      ;;
+    --)
+      shift
+      break
+      ;;
+    *)
+      set -- "$@" "$1"
+      ;;
+  esac
+
+  shift
+done
+
+WORKINGDIR="${WORKINGDIR:-"$DOBUILD_PROJECTDIR"}"
+
+if [ -z "${DOCKER_HOST+x}" ]; then
+  export DOCKER_HOST='unix:///var/run/docker.sock'
+fi
+
+set -- container_run --workdir "$(canonicalize "$WORKINGDIR")" --entrypoint "$DOBUILD_COMPOSEENTRYPOINT" "$DOBUILD_COMPOSEIMAGE" "$@"
+
+exec "$@"

bin/get_container_id.sh

@@ -0,0 +1,39 @@
+#!/bin/sh
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+set -e
+
+container_id() {
+  if [ "$#" -le 0 ]; then
+    container_id_by_cgroup < /proc/self/cgroup
+  else
+    container_id_by_object "$@"
+  fi
+}
+
+container_id_by_object() {
+  "$DOCKER" inspect --format='{{.Id}}' "$@"
+}
+
+container_id_by_cgroup() {
+  while IFS= read -r cmd; do
+    id="$(echo "$cmd" | sed -n -e 's/[^:]*:[^:]*:.*\/\([0-9a-fA-F]\+\)$/\1/p')"
+    if container_id_by_object "$id" >/dev/null 2>&1; then
+      echo "$id"
+      return 0
+    fi
+  done
+
+  return 3
+}
+
+DOCKER="${DOCKER:-docker}"
+container_id "$@"

bin/get_source_date_epoch

@@ -0,0 +1,40 @@
+#!/bin/sh
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+exec 0<&-
+
+set -e
+
+export LANG=C
+export LC_ALL=C
+
+TOPDIR="$1"
+
+[ -z "$TOPDIR" ] || cd "$TOPDIR"
+
+try_git() {
+  [ -d .git ] || return 1
+  git show -s --format=format:%ct HEAD
+}
+
+try_svn() {
+  [ -d .svn ] || return 1
+  LAST_CHANGED_DATE="$(svn info | sed -n -e 's/^Last Changed Date: //p')"
+  [ -n "$LAST_CHANGED_DATE" ] || return 2
+  SOURCE_DATE_EPOCH="$(date -d "$LAST_CHANGED_DATE" +%s)"
+}
+
+try_mtime() {
+  stat -c '%Y' "$PWD"
+}
+
+SOURCE_DATE_EPOCH="$(try_git || try_svn || try_mtime)"
+echo "$SOURCE_DATE_EPOCH"

bin/groovy3

@@ -0,0 +1,50 @@
+#!/bin/sh
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+set -e
+
+physical_pwd() {
+  pwd -P 2>/dev/null || pwd
+}
+
+try_canonicalize() {
+  readlink -f "$@" 2>/dev/null || realpath "$@"
+}
+
+canonicalize() {
+  if ! try_canonicalize "$1" 2>/dev/null; then
+    echo "$(cd "$(dirname "$1")" && physical_pwd)/$(basename "$1")"
+  fi
+}
+
+scriptdir() {
+  dirname "$(canonicalize "${BASH_SOURCE:-$1}")"
+}
+
+DOBUILDDIR="${DOBUILDDIR:-"$(dirname "$(scriptdir "$0")")"}"
+PATH="$DOBUILDDIR/bin:$PATH"
+
+DOBUILD_GROOVYVERSION="${DOBUILD_GROOVYVERSION:-3.0-jre13}"
+DOBUILD_GROOVYIMAGE="${REGISTRY_PREFIX}groovy:${DOBUILD_GROOVYVERSION}"
+DOBUILD_GROOVYENTRYPOINT="${DOBUILD_GROOVYENTRYPOINT:-groovy}"
+
+export DOBUILDDIR
+export DOBUILD_PROJECTDIR="${DOBUILD_GROOVYPROJECTDIR:-"$PWD"}"
+
+set -- --entrypoint "$DOBUILD_GROOVYENTRYPOINT" "$DOBUILD_GROOVYIMAGE" "$@"
+
+if [ -n "$DOBUILD_GRAPESCACHE" ]; then
+  set -- -v "${DOBUILD_GRAPESCACHE}:/home/groovy/.groovy/grapes:delegated" "$@"
+fi
+
+set -- container_run --workdir "$(canonicalize "$DOBUILD_PROJECTDIR")" "$@"
+
+exec "$@"

bin/is_running_in_bg.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+set -e
+
+running_in_background() {
+  pid="$1"
+  { "$PS" -o stat= -p "$pid" 2>/dev/null || echo '+'; } | grep -vq -e '+$'
+}
+
+PS="${PS:-ps}"
+
+running_in_background "${@:-$$}"

bin/parse_make_targets.sh

@@ -0,0 +1,67 @@
+#!/bin/sh
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+set -e
+
+# Derived based on https://stackoverflow.com/questions/4219255/how-do-you-get-the-list-of-targets-in-a-makefile
+#
+# Note: This relies on -p printing the database nonetheless, which is the case as of GNU make 3.82.
+# Sadly, GNU make offers no direct option to just print the database.
+#
+# Invokes make in order to print the database derived from a makefile:
+#     -p     prints the database
+#     -Rr    suppresses inclusion of built-in rules and variables
+#     -q     only tests the up-to-date-status of a target (without remaking anything), but that by itself doesn't 
+#            prevent execution of recipe commands in all cases
+#     "$@"   list of separate commandline parameters (additional make parameters)
+#     :      is a deliberately invalid target that is meant to ensure that no commands are executed;
+#   2>&1 1>&3
+#    redirect stderr to stdout and stdout to fd 3 to allow filtering unwanted error message
+#   grep -v '.*\s\+No rule to make target\s\+.*:.*' 1>&2 
+#     suppresses the resulting error message - "make: *** No rule to make target ':'.  Stop." and redirect
+#     other output to stderr
+#   3>&1     redirect fd 3 back to stdout
+print_make_db() {
+  { "$MAKE" -pRrq "$@" : 2>&1 1>&3 | grep -v '.*\s\+No rule to make target\s\+.*:.*' 1>&2; } 3>&1
+}
+
+export LANG=C
+export LC_ALL=C
+
+MAKE="${MAKE:-make}"
+
+print_make_db "$@" \
+  | awk -v RS= -F: '/^# File/,/^# Finished Make database/ {if ($1 !~ "^[#.]") {print $1}}' \
+  | sort \
+  | grep -v -e '^[^[:alnum:]]' -e '[%]$'
+
+# Pipe-chain explanation:
+# awk -v RS= -F: '/^# File/,/^# Finished Make database/ {if ($1 !~ "^[#.]") {print $1}}'
+#     v RS=  this is an awk idiom that breaks the input into blocks of contiguous non-empty lines.
+#     -F:    input field speparator
+#     /^# File/,/^# Finished Make database/
+#       matches the range of lines in the output that contains all targets (true as of GNU make 3.82) - by limiting 
+#       parsing to this range, there is no need to deal with false positives from other output sections.
+#     if ($$1 !~ "^[#.]")
+#       selectively ignores blocks:
+#         # ... ignores non-targets, whose blocks start with # Not a target:
+#         . ... ignores special targets
+#       all other blocks should each start with a line containing only the name of an explicitly defined target 
+#       followed by :
+# sort
+#   sorts the resulting list of targets, which is the best option, since not sorting doesn't produce a helpful 
+#   ordering in that the order in which the targets appear in the makefile is not preserved.
+# grep -v -e '^[^[:alnum:]]' -e '[%]$$' removes unwanted targets from the output:
+#   -v       revert machtes
+#   -e '^[^[:alnum:]]' 
+#     ... hidden targets, which - by convention - are targets that start neither with a letter nor a digit.
+#   -e '[%]$$'
+#     ... targets ending with % (pattern targets)

bin/parse_target_properties.sh

@@ -0,0 +1,147 @@
+#!/bin/sh -e
+
+# <host-arch>+<target-arch><sub>-<vendor>-<sys>-<abi>+<id>
+#
+# arch = x86_64, i386, arm, thumb, mips, etc.
+# sub = for ex. on ARM: v5, v6m, v7a, v7m, etc.
+# vendor = pc, apple, nvidia, ibm etc.
+# sys = none, linux, win32, darwin, cuda, etc.
+# abi = eabi, gnu, android, macho, elf, etc.
+
+sh_escape() {
+  sed \
+    -e "s/\\([;\\*&\\|\\'\\\"\\\$\\(\\)]\\)/\\\\\\1/g" \
+    -e "s/\\([^$ESCCHAR]\\)$ESCCHAR\\(\\s\\)/\\1$ESCCHAR\\\\\\2/g" \
+    -e "s/$ESCCHAR/\\\\$ESCCHAR/"
+}
+
+split() {
+  delimiter="$1"
+  shift
+  printf -- '%s\n' "$@" | sed -e "s/\\([^$ESCCHAR]\\)$delimiter/\\1\\n/g"
+}
+
+unescape() {
+  printf -- '%s\n' "$@" | sed -e "s/[$ESCCHAR]\\(.\\)\\?/\\1/g"
+}
+
+join() {
+  paste -s -d"$1" -
+}
+
+tail() {
+  skip 1 "$@"
+}
+
+skip() {
+  toskip="$1"
+  shift
+  
+  if [ "$toskip" -gt "$#" ]; then
+    toskip="$#"
+  fi
+  
+  while [ "$toskip" -gt '0' ]
+  do
+   shift
+   toskip="$((toskip - 1))"
+  done
+
+  printf -- '%s\n' "$@"
+}
+
+host_march() {
+  uname -m
+}
+
+if [  "$#" -eq 0 ]; then
+  {
+    printf 'Usage:\n%s <target-name>\n\n' "$0"
+    printf 'Format of target-name:\n'
+    printf '[<host-arch>+][<target-triple>+]<id>\n'
+    printf 'or\n'
+    printf '[<host-arch>] [<target-triple>] <id>\n\n'
+    printf 'Format of target-triple:\n'
+    printf '<target-arch><sub>[-<vendor>][-<sys>][-<abi>]\n'
+    printf 'or\n'
+    printf '<target-arch><sub>[-<distrib>[@distrib-version]][-<sys>][-<abi>]\n\n'
+    printf 'Special characters: %s,+,-,@\n' "$ESCCHAR"
+    printf 'Escape character: %s\n\n' "$ESCCHAR"
+    printf 'Examples:\n'
+    printf '%s myapp\n' "$0"
+    printf '%s x86_64+myapp\n' "$0"
+    printf '%s x86_64 myapp\n' "$0"
+    printf '%s x86_64-alpine@3.9-linux-gnueabihf+myapp\n' "$0"
+    printf '%s x86_64-alpine@3.9-linux-gnueabihf myapp\n' "$0"
+    printf '%s x86_64+arm32v7-alpine@3.9-linux-gnueabihf+myapp\n' "$0"
+    printf '%s x86_64 arm32v7-alpine@3.9-linux-gnueabihf myapp\n' "$0"
+    printf '%s x86_64+arm32v7-alpine@3.9-linux-gnueabihf+myapp+id\n' "$0"
+    printf '%s x86_64 arm32v7-alpine@3.9-linux-gnueabihf myapp id\n\n' "$0"
+  } >&2
+  return 1
+fi
+
+ESCCHAR='~'
+TARGET="$(echo "$@" | join '+')"
+
+# TODO: remove ugly hack
+# necessary while posix shell can not handle arrays except the argument array
+# maybe re-implement using a more suitable language!
+
+#shellcheck disable=SC2046
+eval set -- $(split '+' "$@" | sh_escape)
+
+if [  "$#" -gt 2 ]; then
+  HOST_ARCH="$1"
+  shift
+fi
+
+if [  "$#" -eq 1 ]; then
+  set -- "$(host_march)" "$@"
+fi
+
+ID_VARIANT="$(tail "$@" | join '+')"
+TARGET_TRIPLE="$1"
+
+#shellcheck disable=SC2046
+eval set -- $(split '@' "$ID_VARIANT" | sh_escape)
+
+ID="$1"
+if [ -z "$ID" ]; then
+  printf 'error: failed to parse "%s" aka "%s", unsupported target name\n' "$*" "$TARGET" >&2
+  return 2
+fi
+
+VARIANT="$(tail "$@" | join '@')"
+VARIANT="${VARIANT:-release}"
+
+#shellcheck disable=SC2046
+eval set -- $(split '-' "$TARGET_TRIPLE" | sh_escape)
+
+TARGET_ARCH_SUB="$1"
+HOST_ARCH="${HOST_ARCH:-$TARGET_ARCH_SUB}"
+VENDOR="${2:-unknown}"
+TARGET_SYS="${3:-linux}"
+
+TARGET_ABI="$(skip 3 "$@" | join '-')"
+TARGET_ABI="${TARGET_ABI:-gnu}"
+
+#shellcheck disable=SC2046
+eval set -- $(split '@' "$VENDOR" | sh_escape)
+
+VENDOR_OR_DISTRIB_ID="$1"
+
+DISTRIB_VERSION="$(tail "$@" | join '@')"
+DISTRIB_VERSION="${DISTRIB_VERSION:-latest}"
+
+set -- \
+  "$HOST_ARCH" \
+  "$TARGET_ARCH_SUB" \
+  "$VENDOR_OR_DISTRIB_ID" \
+  "$TARGET_SYS" \
+  "$TARGET_ABI" \
+  "$ID" \
+  "$DISTRIB_VERSION" \
+  "$VARIANT"
+
+unescape "$@" | cat

bin/shellcheck

@@ -0,0 +1,44 @@
+#!/bin/sh
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+set -e
+
+physical_pwd() {
+  pwd -P 2>/dev/null || pwd
+}
+
+try_canonicalize() {
+  readlink -f "$@" 2>/dev/null || realpath "$@"
+}
+
+canonicalize() {
+  if ! try_canonicalize "$1" 2>/dev/null; then
+    echo "$(cd "$(dirname "$1")" && physical_pwd)/$(basename "$1")"
+  fi
+}
+
+scriptdir() {
+  dirname "$(canonicalize "${BASH_SOURCE:-$1}")"
+}
+
+DOBUILDDIR="${DOBUILDDIR:-"$(dirname "$(scriptdir "$0")")"}"
+PATH="$DOBUILDDIR/bin:$PATH"
+
+DOBUILD_SHELLCHECKVERSION="${DOBUILD_SHELLCHECKVERSION:-v0.6.0}"
+DOBUILD_SHELLCHECKIMAGE="${REGISTRY_PREFIX}koalaman/shellcheck:${DOBUILD_SHELLCHECKVERSION}"
+
+export DOBUILDDIR
+export DOBUILD_PROJECTDIR="${DOBUILD_SHELLCHECKPROJECTDIR:-"$PWD"}"
+export DOBUILD_HOSTENVFILTER="${DOBUILD_SHELLCHECKHOSTENVFILTER:-^SHELLCHECK_}"
+
+set -- container_run --workdir "$(canonicalize "$DOBUILD_PROJECTDIR")" "$DOBUILD_SHELLCHECKIMAGE" "$@"
+
+exec "$@"

bin/tar_cc_settings

@@ -0,0 +1,290 @@
+#!/bin/sh
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+set -e
+
+# FIXME: don't depend on cmake internals
+discover_cmake_includes() {
+  if [ $# -gt 0 ]; then
+    sed -n -e 's/.*_INCLUDE_DIRS:INTERNAL=\(.*\)$/\1/p' "$@";
+  fi
+}
+
+discover_system_includes() {
+  case "$BUILDSYSTEM" in
+    cmake-?*)
+      discover_cmake_includes "$@"
+      ;;
+    *)
+      ;;
+  esac
+}
+
+# FIXME: handle different compilers and language standards
+discover_cc_includes() {
+  {
+    echo | "$CXX" -xc++ -E -Wp,-v - 2>&1
+    echo | "$CC" -xc -E -Wp,-v - 2>&1
+  } \
+  | sed -n -e 's/\s\+\(\/.*$\).*/\1/p'
+}
+
+discover_includes() {
+  {
+    discover_cc_includes;
+    discover_system_includes "$@"
+  } \
+  | sed 's/;/\n/g' |  sed '/^$/d' | sort -u 2>/dev/null \
+  | while IFS= read -r file; do
+    if [ -e "$file" ]; then
+      canonicalize "$file"
+    fi
+  done
+}
+
+detect_toolchain() {
+  case "$BUILDSYSTEM" in
+    cmake-?*)
+      cmake -LA -N "$(dirname "$1")" > "$CACHED_VALUES_TMPFILE"
+      CXX="$(sed -n -e 's/CMAKE_CXX_COMPILER:FILEPATH=\(.*\)$/\1/p' -e 's/CMAKE_CXX_COMPILER:STRING=\(.*\)$/\1/p' "$CACHED_VALUES_TMPFILE")"
+      CC="$(sed -n -e 's/CMAKE_C_COMPILER:FILEPATH=\(.*\)$/\1/p' -e 's/CMAKE_C_COMPILER:STRING=\(.*\)$/\1/p' "$CACHED_VALUES_TMPFILE")"
+      ;;
+    *)
+      ;;
+  esac
+}
+
+parse_make_targets() {
+  parse_make_targets.sh -C "$WORKINGDIR"
+}
+
+parse_ninja_targets() {
+  "$NINJA" -C "$WORKINGDIR" -t targets all | sed -n -e 's/\([^:]*\):.*/\1/p' | sort 2>/dev/null
+}
+
+discover_targets() {
+  case "$BUILDSYSTEM" in
+    cmake-make|make)
+      parse_make_targets
+      ;;
+    cmake-ninja|ninja)
+      parse_ninja_targets
+      ;;
+    *)
+      ;;
+  esac
+}
+
+prefix_dir() {
+  while IFS= read -r dir; do
+    printf '%s%s\n' "$1" "$dir"
+  done
+}
+
+sed_keyword() {
+  printf '%s\n' "$@" | sed -e 's/[]\/$*.^[]/\\&/g'
+}
+
+sed_replacement() {
+  printf '%s\n' "$@" | sed -e 's/[\/&]/\\&/g'
+}
+
+format_json() {
+  i=0
+  printf '[\n'
+  while IFS= read -r line; do
+    if [ "$i" -gt 0 ]; then
+      printf ',\n'
+    fi
+    printf '"%s"' "$line"
+    i="$((i+1))"
+  done
+  printf '\n]\n'
+}
+
+physical_pwd() {
+  pwd -P 2>/dev/null || pwd
+}
+
+try_canonicalize() {
+  readlink -f "$@" 2>/dev/null || realpath "$@"
+}
+
+canonicalize() {
+  if ! try_canonicalize "$1" 2>/dev/null; then
+    echo "$(cd "$(dirname "$1")" && physical_pwd)/$(basename "$1")"
+  fi
+}
+
+scriptdir() {
+  dirname "$(canonicalize "${BASH_SOURCE:-$1}")"
+}
+
+cleanup() {
+  EXITCODE="${EXITCODE:-$?}"
+  rm -f "$INCLUDE_DIRS_TMPFILE" "$CACHED_VALUES_TMPFILE"
+  return "$EXITCODE" 
+}
+
+trap cleanup TERM INT EXIT
+
+export LANG=C
+export LC_ALL=C
+
+DOBUILDDIR="${DOBUILDDIR:-"$(dirname "$(scriptdir "$0")")"}"
+NINJA="${NINJA:-ninja}"
+PATH="$DOBUILDDIR/bin:$PATH"
+
+set -- "$@" --
+
+CXX=
+CC=
+BUILDSYSTEM=
+WORKINGDIR="$PWD"
+PROJECTDIR=
+INCLUDE_PREFIX="$WORKINGDIR"
+COMPILE_COMMANDS_JSON_FILE=
+
+while :; do
+  case $1 in
+    -C|--directory)
+      if [ "$2" != '--' ]; then
+        WORKINGDIR="$2"
+        shift
+      else
+        printf 'error: "%s" requires a non-empty option argument.\n' "$1" >&2
+        exit 3
+      fi
+      ;;
+    --directory=)
+      printf 'error: "%s" requires a non-empty option argument.\n' "$1" >&2
+      exit 3
+      ;;
+    --directory=?*)
+      WORKINGDIR="${1#*=}"
+      ;;
+    --project-root)
+      if [ "$2" != '--' ]; then
+        PROJECTDIR="$2"
+        shift
+      else
+        PROJECTDIR=
+      fi
+      ;;
+    --project-root=)
+      PROJECTDIR=
+      ;;
+    --project-root=?*)
+      PROJECTDIR="${1#*=}"
+      ;;
+    --build-system)
+      if [ "$2" != '--' ]; then
+        BUILDSYSTEM="$2"
+        shift
+      else
+        BUILDSYSTEM=
+      fi
+      ;;
+    --build-system=)
+      BUILDSYSTEM=
+      ;;
+    --build-system=?*)
+      BUILDSYSTEM="${1#*=}"
+      ;;
+    -p|--include-prefix)
+      if [ "$2" != '--' ]; then
+        INCLUDE_PREFIX="$2"
+        shift
+      else
+        INCLUDE_PREFIX=
+      fi
+      ;;
+    --include-prefix=)
+      INCLUDE_PREFIX=
+      ;;
+    --include-prefix=?*)
+      INCLUDE_PREFIX="${1#*=}"
+      ;;
+    compile_commands.json|?*/compile_commands.json)
+      COMPILE_COMMANDS_JSON_FILE="$1"
+      ;;
+    --help)
+      {
+        printf 'Usage: %s [option...] [file...]\n' "$(basename "$0")"
+        printf 'Options:\n'
+        printf '\t-C|--directory\t\tWorking directory\n'
+        printf '\t--build-system\t\tBuildsystem kind e.g. cmake-make,cmake-ninja\n'
+        printf '\t--project-root\t\tProject root directory\n'
+        printf '\t-p|--include-prefix\tInclude prefix appended to all discovered include dirs\n'
+        printf 'Files:\n'
+        printf '\tBuildsystem specific configurations files e.g. CMakeCache.txt\n'
+      } >&2
+      exit 0
+      ;;
+    --)
+      shift
+      break
+      ;;
+    *)
+      set -- "$@" "$1"
+      ;;
+  esac
+
+  shift
+done
+
+OUTDIR="$WORKINGDIR/DoBuildFiles"
+mkdir -p "$OUTDIR"
+
+INCLUDE_PREFIX_REPLACEMENT="%OUTDIR%/$INCLUDE_PREFIX"
+
+CACHED_VALUES_TMPFILE="$(mktemp -p "$OUTDIR" cached_values_XXXXXXXXXX.txt)"
+INCLUDE_DIRS_TMPFILE="$(mktemp -p "$OUTDIR" include_dirs_XXXXXXXXXX.txt)"
+INCLUDE_DIRS_TMPL_FILE="$OUTDIR/include_dirs.json.template"
+TARGETS_JSON_FILE="$OUTDIR/targets.json"
+TARGETS_TXT_FILE="$OUTDIR/targets.txt"
+COMPILE_COMMANDS_TMPL_FILE="$OUTDIR/compile_commands.json.template"
+C_BUILTIN_FILE="$OUTDIR/builtins.h"
+CXX_BUILTIN_FILE="$OUTDIR/builtins.hpp"
+
+detect_toolchain "$@"
+
+discover_targets "$@" | tee "$TARGETS_TXT_FILE" | format_json > "$TARGETS_JSON_FILE"
+discover_includes "$@" | tee "$INCLUDE_DIRS_TMPFILE" | prefix_dir "$INCLUDE_PREFIX_REPLACEMENT" | format_json > "$INCLUDE_DIRS_TMPL_FILE"
+
+# FIXME: handle different compilers and language standards
+"$CC" -xc -dM -E - < /dev/null > "$C_BUILTIN_FILE"
+"$CXX" -xc++ -dM -E - < /dev/null > "$CXX_BUILTIN_FILE"
+
+if [ -n "$COMPILE_COMMANDS_JSON_FILE" ]; then
+  set -- 
+  while IFS= read -r line; do
+    set -- "$@" -e "s/$(sed_keyword "${line}")/$(sed_replacement "${INCLUDE_PREFIX_REPLACEMENT}${line}")/g"
+  done < "$INCLUDE_DIRS_TMPFILE"
+  set -- "$@" -e "s/$(sed_keyword "$WORKINGDIR")/$(sed_replacement "%OUTDIR%")/g"
+  if [ -n "$PROJECTDIR" ]; then
+    set -- "$@" -e "s/$(sed_keyword "$PROJECTDIR")/$(sed_replacement "%PROJECTDIR%")/g"
+  fi
+  set -- "$@" "$COMPILE_COMMANDS_JSON_FILE"
+  sed "$@" > "$COMPILE_COMMANDS_TMPL_FILE"
+fi
+
+set --
+
+if [ -n "$INCLUDE_PREFIX" ]; then
+  while IFS= read -r file; do
+    set -- "$@" "$file"
+  done < "$INCLUDE_DIRS_TMPFILE"
+fi
+
+cleanup
+
+exec tar cf - -C / "$@"

cmake.mk

@@ -0,0 +1,213 @@
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+ifndef cmake_include_guard
+cmake_include_guard := 1
+
+current_makefile := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
+
+ifndef defaults_include_guard
+  include $(patsubst %/,%,$(dir $(current_makefile)))/defaults.mk
+endif
+
+#######################################################################################################################
+# Overridable CMake defaults
+
+DOBUILD_CMAKE_GENERATOR ?= make
+
+#######################################################################################################################
+# Overridable cmake macros, hooks to customize target default values
+
+# hook called to retrieve the target cmake extension directory,
+# may return an empty value
+# $(call dobuild_cmake_extdir,target-name)
+dobuild_cmake_extdir ?= $(call dobuild_generic_extdir,$1)
+
+# hook called to retrieve the target cmake adapter name
+# $(call dobuild_cmake_adapter,target-name)
+dobuild_cmake_adapter ?= cmake
+
+# hook called to retrieve the target cmake prerequisites,
+# may return an empty list
+# $(call dobuild_cmake_prerequisites,target-name)
+dobuild_cmake_prerequisites ?= $(call dobuild_generic_prerequisites,$1)
+
+# hook called to retrieve the target cmake order-only prerequisites,
+# may return an empty list
+# $(call dobuild_cmake_orderonly_prerequisites,target-name)
+dobuild_cmake_orderonly_prerequisites ?= $(call dobuild_generic_orderonly_prerequisites,$1)
+
+# hook called to retrieve the target cmake prepare step,
+# may return an empty value
+# $(call dobuild_cmake_prepare,target-name)
+dobuild_cmake_prepare ?= $(call dobuild_generic_prepare,$1)
+
+# hook called to retrieve the target cmake assemble step
+# $(call dobuild_cmake_assemble,target-name)
+dobuild_cmake_assemble ?= $(call dobuild_generic_assemble,$1)
+
+# hook called to retrieve the target cmake save artifacts step,
+# may return an empty value
+# $(call dobuild_cmake_saveartifacts,target-name)
+dobuild_cmake_saveartifacts ?= $(call dobuild_generic_saveartifacts,$1)
+
+# hook called to retrieve the target cmake lint step,
+# may return an empty value
+# $(call dobuild_cmake_lint,target-name)
+dobuild_cmake_lint ?= $(call dobuild_generic_lint,$1)
+
+# hook called to retrieve the target cmake check step,
+# may return an empty value
+# $(call dobuild_cmake_check,target-name)
+dobuild_cmake_check ?= $(call dobuild_generic_check,$1)
+
+# hook called to retrieve the target cmake memcheck step,
+# may return an empty value
+# $(call dobuild_cmake_memcheck,target-name)
+dobuild_cmake_memcheck ?= $(call dobuild_generic_memcheck,$1)
+
+# hook called to retrieve the target cmake package step,
+# may return an empty value
+# $(call dobuild_cmake_package,target-name)
+dobuild_cmake_package ?= $(call dobuild_generic_package,$1)
+
+# hook called to retrieve the target cmake install step,
+# may return an empty value
+# $(call dobuild_cmake_install,target-name)
+dobuild_cmake_install ?= $(call dobuild_generic_install,$1)
+
+# hook called to retrieve the target cmake delegate step
+# $(call dobuild_cmake_delegate,target-name)
+dobuild_cmake_delegate ?= $(call dobuild_generic_delegate,$1)
+
+# hook called to retrieve the target cmake build testing option,
+# may return an empty value in which case BUILD_TESTING is used
+# $(call dobuild_cmake_buildtesting,target-name)
+dobuild_cmake_buildtesting ?= $(call dobuild_generic_buildtesting,$1)
+
+# hook called to retrieve the target cmake generator name,
+# may return an empty value in which case CMAKE_GENERATOR is used
+# $(call dobuild_cmake_generator,target-name)
+dobuild_cmake_generator ?= 
+
+#######################################################################################################################
+# CMake macros
+
+# retrieves the target cmake default prerequisites
+# $(call cmake_default_prerequisites,target-name)
+cmake_default_prerequisites = \
+  $(OUTDIR)/$1/DoBuildFiles/cmake.properties \
+  $(wildcard $(PROJECTDIR)/CMakeLists.txt)
+
+# retrieves the target cmake generator
+# $(call cmake_generator,target-name)
+cmake_generator = $(cmake_generator_$(cache.$1.cmake_generator))
+
+# retrieves the target cmake generator command
+# $(call cmake_generator_cmd,target-name)
+cmake_generator_cmd = $(cache.$1.cmake_generator)
+
+# creates a cmake properties generation cmd
+# $(call cmake_props_cmd,target-name,input-file)
+cmake_props_cmd = sed \
+  -e 's!%CMAKE_GENERATOR_CMD%!$(call escape,$(call cmake_generator_cmd,$1),!)!g' \
+  -e 's!%CMAKE_GENERATOR%!$(call escape,$(call cmake_generator,$1),!)!g' \
+  $2
+
+# creates a cmake properties generation rule
+# $(call cmake_props_rule,target-name)
+cmake_props_rule = \
+  $$(OUTDIR)/$1/DoBuildFiles/cmake.properties: $$(DOBUILDDIR)/assets/templates/cmake.properties.template $$(MAKEFILE_LIST); \
+    $$(SILENT)mkdir -p $$(dir $$@); $$(call cmake_props_cmd,$1,$$<) > $$@
+
+#######################################################################################################################
+# CMake rule target configuration
+
+CMAKE_GENERATOR = $(call memorize,CMAKE_GENERATOR,$(DOBUILD_CMAKE_GENERATOR))
+
+docker_runflags += --env NINJA_STATUS
+
+cmake_generator_ninja = Ninja
+cmake_generator_make = Unix Makefiles
+
+cmake_rule_targets = $(addsuffix /cmakerules.mk,$(OUTDIR))
+
+GENERIC_TARGETS += $(CMAKE_TARGETS)
+RULE_TARGETS += $(cmake_rule_targets)
+
+#######################################################################################################################
+# Makefile dependencies
+
+MAKEFILE_DEPS += touch
+MAKEFILE_DEPS += echo
+MAKEFILE_DEPS += sed
+
+#######################################################################################################################
+# CMake rules
+
+$(cmake_rule_targets):
+	$(SILENT) \
+	{ \
+	  echo '$(\#) generated file - do not edit!!!'; \
+	  echo; \
+	  ID='$(call id,$@)'; \
+	  echo "ifndef $${ID}_include_guard"; \
+	  echo "$${ID}_include_guard := 1"; \
+	  echo; \
+	$(foreach target,$(CMAKE_TARGETS),\
+	  echo '$(\#)$(\#) BEGIN of cmake $(target) configuration'; \
+	  echo; \
+	  echo '$(\#)$(\#)$(\#) defaults'; \
+	  echo '$(target) ?= $$(call memorize,$(target),$(call target_properties_parse,$(target)))'; \
+	  echo '$(target).generic_adapter = $$(call $$1.cmake_adapter,$$1)'; \
+	  echo '$(target).generic_extdir = $$(call $$1.cmake_extdir,$$1)'; \
+	  echo '$(target).generic_prerequisites = $$(call $$1.cmake_prerequisites,$$1) $$(call cmake_default_prerequisites,$$1)'; \
+	  echo '$(target).generic_orderonly_prerequisites ?= $$(call $$1.cmake_orderonly_prerequisites,$$1)'; \
+	  echo '$(target).generic_prepare = $$(call $$1.cmake_prepare,$$1)'; \
+	  echo '$(target).generic_assemble = $$(call $$1.cmake_assemble,$$1)'; \
+	  echo '$(target).generic_saveartifacts = $$(call $$1.cmake_saveartifacts,$$1)'; \
+	  echo '$(target).generic_lint = $$(call $$1.cmake_lint,$$1)'; \
+	  echo '$(target).generic_check = $$(call $$1.cmake_check,$$1)'; \
+	  echo '$(target).generic_memcheck = $$(call $$1.cmake_memcheck,$$1)'; \
+	  echo '$(target).generic_package = $$(call $$1.cmake_package,$$1)'; \
+	  echo '$(target).generic_install = $$(call $$1.cmake_install,$$1)'; \
+	  echo '$(target).generic_delegate = $$(call $$1.cmake_delegate,$$1)'; \
+	  echo '$(target).generic_buildtesting = $$(call $$1.cmake_buildtesting,$$1)'; \
+	  echo '$(target).cmake_adapter ?= $$(call dobuild_cmake_adapter,$$1)'; \
+	  echo '$(target).cmake_extdir ?= $$(call dobuild_cmake_extdir,$$1)'; \
+	  echo '$(target).cmake_prerequisites ?= $$(call dobuild_cmake_prerequisites,$$1)'; \
+	  echo '$(target).cmake_orderonly_prerequisites ?= $$(call dobuild_cmake_orderonly_prerequisites,$$1)'; \
+	  echo '$(target).cmake_prepare ?= $$(call dobuild_cmake_prepare,$$1)'; \
+	  echo '$(target).cmake_assemble ?= $$(call dobuild_cmake_assemble,$$1)'; \
+	  echo '$(target).cmake_saveartifacts ?= $$(call dobuild_cmake_saveartifacts,$$1)'; \
+	  echo '$(target).cmake_lint ?= $$(call dobuild_cmake_lint,$$1)'; \
+	  echo '$(target).cmake_check ?= $$(call dobuild_cmake_check,$$1)'; \
+	  echo '$(target).cmake_memcheck ?= $$(call dobuild_cmake_memcheck,$$1)'; \
+	  echo '$(target).cmake_package ?= $$(call dobuild_cmake_package,$$1)'; \
+	  echo '$(target).cmake_install ?= $$(call dobuild_cmake_install,$$1)'; \
+	  echo '$(target).cmake_delegate ?= $$(call dobuild_cmake_delegate,$$1)'; \
+	  echo '$(target).cmake_buildtesting ?= $$(call dobuild_cmake_buildtesting,$$1)'; \
+	  echo '$(target).cmake_generator ?= $$(call dobuild_cmake_generator,$$1)'; \
+	  echo; \
+	  echo '$(\#)$(\#)$(\#) cached values'; \
+	  echo 'cache.$(target).cmake_generator = $$(call memorize,cache.$(target).cmake_generator,$$(or $$(call $(target).cmake_generator,$(target)),$$(CMAKE_GENERATOR)))'; \
+	  echo; \
+	  echo '$(\#)$(\#)$(\#) rules'; \
+	  echo '$(call cmake_props_rule,$(target))'; \
+	  echo; \
+	  echo '$(\#)$(\#) END of cmake $(target) configuration'; \
+	  echo; \
+	) \
+	  echo 'endif'; \
+	  echo; \
+	} > $@
+
+endif
+

defaults.mk

@@ -0,0 +1,681 @@
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+ifndef defaults_include_guard
+defaults_include_guard := 1
+
+current_makefile := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
+
+#######################################################################################################################
+# Overridable common defaults
+
+# NOTE: default assumes first loaded makefile is located in root directory of project
+MAKEFILE ?= $(firstword $(MAKEFILE_LIST))
+MAKEFILE := $(MAKEFILE)
+
+DOBUILD_TOPDIR ?= $(PROJECTDIR)
+DOBUILD_PROJECTDIR ?= $(patsubst %/,%,$(dir $(MAKEFILE)))
+DOBUILD_PROJECTNAME ?= $(notdir $(shell cd $(PROJECTDIR) && pwd))
+DOBUILD_PROJECTVERSIONFILE ?= $(PROJECTDIR)/VERSION
+DOBUILD_PROJECTVERSION ?= $(shell cat '$(VERSIONFILE)' 2>/dev/null)
+DOBUILD_OUTDIR ?= $(BUILDDIR)/.build
+DOBUILD_BUILDDIR ?= $(PROJECTDIR)
+DOBUILD_BUILDVERBOSE ?=
+DOBUILD_TESTVERBOSE ?=
+DOBUILD_BUILDTESTING ?= 1
+DOBUILD_USERID ?= $(shell id -u)
+DOBUILD_HOSTCONTAINER ?= $(shell $(DOBUILDDIR)/bin/get_container_id.sh)
+DOBUILD_JOBSLOTS ?= $(call jobslots,$(make_cmdline))
+DOBUILD_SKIPMD5SUM ?= $(call filter_not_found,md5sum)
+DOBUILD_SKIPCURL ?= $(call filter_not_found,curl)
+DOBUILD_SKIPDEFAULTTARGET ?= $(or $(HOSTMARCH),$(MARCH),$(DISTRIB_ID),$(DISTRIB_VERSION),$(SYS),$(ABI),$(ID),$(VARIANT),$(call not,$(DEFAULTTARGET)))
+DOBUILD_SKIPEXTERNSYNC ?= 
+DOBUILD_FILTER ?= $(call target_properties_combine, \
+    $(or $(HOSTMARCH),%), \
+    $(or $(MARCH),%), \
+    $(or $(DISTRIB_ID),%), \
+    $(or $(SYS),%), \
+    $(or $(ABI),%), \
+    $(or $(ID),%), \
+    $(or $(DISTRIB_VERSION),%), \
+    $(or $(VARIANT),%) \
+  )
+DOBUILD_EXCLUDEFILTER ?= $(if $(strip \
+      $(or $(EXCLUDE_HOSTMARCH),$(EXCLUDE_MARCH),$(EXCLUDE_DISTRIB_ID),$(EXCLUDE_SYS),$(EXCLUDE_ABI),$(EXCLUDE_ID),$(EXCLUDE_DISTRIB_VERSION),$(EXCLUDE_VARIANT)) \
+    ), \
+    $(call target_properties_combine, \
+      $(or $(EXCLUDE_HOSTMARCH),%), \
+      $(or $(EXCLUDE_MARCH),%), \
+      $(or $(EXCLUDE_DISTRIB_ID),%), \
+      $(or $(EXCLUDE_SYS),%), \
+      $(or $(EXCLUDE_ABI),%), \
+      $(or $(EXCLUDE_ID),%), \
+      $(or $(EXCLUDE_DISTRIB_VERSION),%), \
+      $(or $(EXCLUDE_VARIANT),%)\
+    ) \
+  )
+DOBUILD_FILTERMEMCHECK ?= $(call target_properties_format_args,$(or $(machine),%),$(or $(machine),%),%,%,%,%,%,%)
+DOBUILD_CGROUPPARENT ?=
+DOBUILD_COLOR ?= $(shell { command -v tput >/dev/null 2>&1 && test "$$(tput $(addprefix -T,$(TERM)) colors)" -ge 8 2>/dev/null; } && echo '1')
+DOBUILD_EXTDIR ?= $(PROJECTDIR)/dobuild-extensions
+
+BUILDKIT_PROGRESS ?= plain
+DOCKER_BUILDKIT ?= 1
+DESTDIR ?=
+TERM ?= linux
+REGISTRY_PREFIX ?=
+VERBOSE ?=
+
+COLOR = $(call memorize,COLOR,$(DOBUILD_COLOR))
+
+PREPARE_TARGETS = $(EXTRACT_TARGETS)
+RULE_TARGETS = 
+BUILD_TARGETS = 
+CHECK_TARGETS = 
+MEMCHECK_TARGETS = 
+LINT_TARGETS = 
+RUN_TARGETS = 
+CLEAN_TARGETS = 
+EXTRACT_TARGETS = 
+DIST_TARGETS = 
+DISTCLEAN_TARGETS = 
+INSTALL_TARGETS = 
+TARGETS = 
+OUTDIRS = 
+BUILDTARGET = $(warning: deprecated use DEFAULTTARGET instead)
+
+DOCKER_RUNFLAGS = 
+DOCKER_BUILDFLAGS = 
+IMAGE_BUILDARGS = 
+
+CURLFLAGS = 
+
+MAKEFILE_DEPS =
+
+#######################################################################################################################
+# Common macros
+
+# caches a value lazily - at it's first evaluation
+# $(call memorize,VAR,value...)
+memorize = $(eval $1 := $$2)$2
+
+# asserts value is not empty, evaluates to value or reports an error message on failure and aborts build
+# $(call assert,value,message)
+assert = $(or $1,$(error assertion failed: $2))
+
+# asserts value is not empty, evaluates to value or reports a warning message on failure and continues build
+# $(call expect,value,message)
+expect = $(or $1,$(warning expectation failed: $2))
+
+# asserts value is of scalar type, evaluates to value or reports an error message on failure
+# $(call assert_scalar,value...,message)
+assert_scalar = $(if $(call eq_s,1,$(words $1)),$1,$(error assertion failed: $2))
+
+# filters out all commands found on host, resulting in a list of unavailable commands
+# $(call filter_not_found,command...)
+filter_not_found = $(filter $1,$(foreach cmd,$1,$(shell command -v $(cmd) >/dev/null 2>&1 || echo $(cmd))))
+
+# escapes a character in string
+# $(call escape,string,char)
+escape = $(subst $2,$(\\)$2,$1)
+
+# filters all elements matching any of the given regular expressions
+# $(call filter_by_regex,regex...,element...)
+filter_by_regex = $(shell printf '%s\n' $2 | sed -n$(foreach regex,$1, -e 's!$(call escape,$(regex),!)!\0!p'))
+
+# parses the target properties [host-arch arch_sub vendor_or_distrib_id sys abi id distrib_version variant] for given name
+# $(call target_properties_parse,target-name)
+target_properties_parse = $(shell $(DOBUILDDIR)/bin/parse_target_properties.sh $1)
+
+# retrieves the target properties
+# $(call target_properties,target-name)
+target_properties = $(or $($1),$(call target_properties_parse,$1))
+
+# formats a list of target properties as string
+# $(call target_properties_format,property...)
+target_properties_format = $(call target_properties_format_args, \
+    $(call target_property_host_arch,$1), \
+    $(call target_property_arch_sub,$1), \
+    $(call target_property_vendor_or_distrib_id,$1), \
+    $(call target_property_sys,$1), \
+    $(call target_property_abi,$1), \
+    $(call target_property_id,$1), \
+    $(call target_property_distrib_version,$1), \
+    $(call target_property_variant,$1) \
+  )
+
+# formats target name by its properties as separated arguments - each may be empty
+# $(call target_properties_format_args,host_arch,arch_sub,distrib,sys,abi,id,distrib_version,variant)
+target_properties_format_args = $(call join_s,$1 $(call join_s,$2 $(call join_s,$3 $7,@) $4 $5,-) $(call join_s,$6 $8,@),+)
+
+# tests each target property matches associated pattern
+# $(call target_properties_matches,pattern...,property...)
+target_properties_matches = $(call eq,$1,$2,filter)
+
+# retrieves the target property host-arch from the list of properties
+# $(call target_property_host_arch,property...)
+target_property_host_arch = $(word 1,$1)
+
+# retrieves the target property arch_sub from the list of properties
+# $(call target_property_arch_sub,property...)
+target_property_arch_sub = $(word 2,$1)
+
+# retrieves the target property vendor_or_distrib_id from the list of properties
+# $(call target_property_vendor_or_distrib_id,property...)
+target_property_vendor_or_distrib_id = $(word 3,$1)
+
+# retrieves the target property sys from the list of properties
+# $(call target_property_sys,property...)
+target_property_sys = $(word 4,$1)
+
+# retrieves the target property abi from the list of properties
+# $(call target_property_abi,property...)
+target_property_abi = $(word 5,$1)
+
+# retrieves the target property id from the list of properties
+# $(call target_property_id,property...)
+target_property_id = $(word 6,$1)
+
+# retrieves the target property distrib_version from the list of properties
+# $(call target_property_distrib_version,property...)
+target_property_distrib_version = $(word 7,$1)
+
+# retrieves the target property variant from the list of properties
+# $(call target_property_variant,property...)
+target_property_variant = $(word 8,$1)
+
+# retrieves the target host-arch
+# $(call target_host_arch,target-name)
+target_host_arch = $(call target_property_host_arch,$(call target_properties,$1))
+
+# retrieves the target arch_sub
+# $(call target_arch_sub,target-name)
+target_arch_sub = $(call target_property_arch_sub,$(call target_properties,$1))
+
+# retrieves the target vendor_or_distrib_id
+# $(call target_vendor_or_distrib_id,target-name)
+target_vendor_or_distrib_id = $(call target_property_vendor_or_distrib_id,$(call target_properties,$1))
+
+# retrieves the target sys
+# $(call target_sys,target-name)
+target_sys = $(call target_property_sys,$(call target_properties,$1))
+
+# retrieves the target abi
+# $(call target_abi,target-name)
+target_abi = $(call target_property_abi,$(call target_properties,$1))
+
+# retrieves the target id
+# $(call target_id,target-name)
+target_id = $(call target_property_id,$(call target_properties,$1))
+
+# retrieves the target id
+# $(call target_variant,target-name)
+target_variant = $(call target_property_variant,$(call target_properties,$1))
+
+# retrieves the target distribution version
+# $(call target_distrib_version,target-name)
+target_distrib_version = $(call target_property_distrib_version,$(call target_properties,$1))
+
+# retrieves the target distribution id and version
+# $(call target_distrib,target-name)
+target_distrib = $(addsuffix $(addprefix @,$(call target_distrib_version,$1)),$(call target_vendor_or_distrib_id,$1))
+
+# retrieves the target distribution id
+# $(call target_distrib_id,target-name)
+target_distrib_id = $(call target_vendor_or_distrib_id,$1)
+
+# tests target properties matches given pattern
+# $(call target_matches,target-name,pattern...)
+target_matches = $(call target_properties_matches,$2,$(call target_properties,$1))
+
+# filters all targets which properties matches given patterns
+# $(call target_filter_by_properties,pattern...,target-name...)
+target_filter_by_properties = $(call filter_p,$2,target_matches,$1)
+
+# filters all targets which properties matches given include-pattern and not the given exclude-pattern strings
+# $(call target_filter,inlcude-pattern-string...,target-name...[,exclude-pattern-string...])
+target_filter = \
+  $(filter-out \
+    $(foreach pattern,$3,$(call target_filter_by_properties,$(call target_properties_parse,$(pattern)),$2)),\
+    $(foreach pattern,$1,$(call target_filter_by_properties,$(call target_properties_parse,$(pattern)),$2))\
+  )
+
+# replaces template values in string list with target properties
+# $(call target_subst,target-name[,values...,])
+target_subst = $(strip \
+    $(subst %TARGET%,$1, \
+      $(subst %OUTDIR%,$(OUTDIR), \
+        $(subst %HOSTMARCH%,$(call target_host_arch,$1), \
+          $(subst %MARCH%,$(call target_arch_sub,$1), \
+            $(subst %DISTRIB%,$(call target_distrib,$1), \
+              $(subst %DISTRIB_ID%,$(call target_distrib_id,$1), \
+                $(subst %DISTRIB_VERSION%,$(call target_distrib_version,$1), \
+                  $(subst %SYS%,$(call target_sys,$1), \
+                    $(subst %ABI%,$(call target_abi,$1), \
+                      $(subst %ID%,$(call target_id,$1), \
+                        $(subst %VARIANT%,$(call target_variant,$1),$2) \
+                      ) \
+                    ) \
+                  ) \
+                ) \
+              ) \
+            ) \
+          ) \
+        ) \
+      ) \
+    ) \
+  )
+
+# replaces template values of target field with target properties
+# $(call target_subst_cmd,target-name,field[,default-value])
+target_get_and_subst = $(call target_subst,$1,$(or $(call $1.$2,$1),$3))
+
+# replaces template values of target field with target properties and resolves result against given search 
+# paths, returning a list of existing resolved paths
+# $(call target_subst_and_resolve,target-name,field,path...)
+target_subst_and_resolve = $(wildcard $(addsuffix /$(call target_get_and_subst,$1,$2,),$3))
+
+# generates target names by combining elements of list properties
+# $(call target_properties_combine,host_arch1...,arch_sub1..,distrib1...,sys1...,abi1...,id1...,distrib_version1...,variant1...) 
+target_properties_combine = $(call combine,target_properties_format_args,$1,$2,$3,$4,$5,$6,$7,$8)
+
+# tests scalar values on equality, returns the value or empty if non-equal
+# $(call eq_s,value1,value2)
+eq_s = $(and $(findstring $1,$2),$(findstring $2,$1))
+
+# tests scalar values on inequality, returns non empty value if values are unequal
+# $(call ne_s,value1,value2)
+ne_s = $(call not,$(call eq_s,$1,$2))
+
+# negates value, returns empty for non-empty value and vice versa 
+# $(call not,value)
+not = $(if $(strip $1),,1)
+
+# compares number values, returns negative value if num1 is less than num2, 
+# a positive value if num1 is greather than 2 and 0 if both are equal
+# $(call compare,num1,num2)
+compare = $(call bc,$1-$2)
+
+# tests if num1 is less than num2
+# $(call lt,num1,num2)
+lt = $(if $(findstring -,$(call compare,$1,$2)),1)
+
+# tests if num1 is greater than num2
+# $(call gt,num1,num2)
+gt = $(call not,$(or $(call lt,$1,$2),$(call eq_s,$1,$2)))
+
+# tests if num1 is greater than or equal to num2
+# $(call ge,num1,num2)
+ge = $(call not,$(call lt,$1,$2))
+
+# tests if version parts (major, minor, patch) are greater or equal to required version parts
+# $(call ge_version,[major minor patch],[required-major required-minor required-patch])
+ge_version = $(strip \
+    $(or \
+      $(call gt,$(or $(firstword $1),0),$(or $(firstword $2),0)), \
+      $(if $(call eq_s,$(or $(firstword $1),0),$(or $(firstword $2),0)), \
+        $(or \
+          $(call gt,$(or $(word 2,$1),0),$(or $(word 2,$2),0)) \
+          $(if $(call eq_s,$(or $(word 2,$1),0),$(or $(word 2,$2),0)), \
+            $(call ge,$(or $(word 3,$1),0),$(or $(word 3,$2),0)) \
+          ) \
+        ) \
+      ) \
+    ) \
+  )
+
+# sorts numbers
+# $(call sort_n,value...)
+sort_n = $(shell LANG=C LC_ALL=C printf '%s\n' $1 | sort -n)
+
+# caluclates minimum of numeric values
+# $(call min,values...)
+min = $(firstword $(call sort_n,$1))
+
+# caluclates maximum of numeric values
+# $(call max,values...)
+max = $(call lastword,$(call sort_n,$1))
+
+# caluclates the value of an arithmetic expression
+# $(call bc,expr...)
+bc = $(shell echo "$$(($1))")
+
+# returns the tail of a list, removing its first element
+# $(call tail,element...)
+tail = $(wordlist 2,$(words $1),$1)
+
+# returns the last element of a list (implemented for backward compatiblity with gnu make 3.8)
+# $(call lastword,element...)
+ifneq ($(lastword 0 1),1)
+  lastword = $(if $1,$(word $(words $1),$1),)
+endif
+
+# removes whitespace characters between positional argument and its value
+# $(call normalize_args,arg...,cmdline)
+normalize_args = $(if $1,$(call normalize_args,$(call tail,$1),$(subst $(firstword $1)$( ),$(firstword $1),$2)),$2)
+
+# parses the number of available job slots (-jx | --jobs X)
+# $(call jobslots,mflags...)
+jobslots = $(call lastword,$(shell printf '%s\n' $(call normalize_args,-j --jobs,$1) | sed -n -e 's@^\(--jobs=\?\|-j\)\([0-9]\+\)@\2@p'))
+
+# creates a colored message
+# $(call color,color-name,value...)
+color = '$(tc_$1)'$2'$(tc_reset)'
+$(COLOR)color = $2
+
+# creates a command that prints a message when VERBOSE is disabled
+# $(call echo_if_silent_cmd,value...)
+echo_if_silent_cmd = VERBOSE=1
+$(VERBOSE)echo_if_silent_cmd = { printf '$(DEFAULT_FMT) ' $1 && printf '\n'; }
+
+# creates a command which is printed before it is executed
+# $(call echo_cmd,command[,args...][,output-command])
+echo_cmd = $(call echo_if_silent_cmd,$(or $3,$1) $2) && $1 $2
+
+# creates a command which changes its working directory before it is executed
+# $(call chdir_cmd,target-name,workdir,command[,args...][,output-command])
+chdir_cmd = \
+     $(call echo_if_silent_cmd,$(call color,green,$(addprefix TARGET=,$1) WORKDIR='$2') $(or $5,$3) $4) \
+  && (cd '$2' && PATH='$(cache.$1.env_path)' $3 $4)
+
+# overridable helper to create a command which is executed as part of a target rule
+# $(call run_cmd,target-name,command[,args...][,output-command])
+run_cmd = $(call chdir_cmd,$1,$(OUTDIR)/$1,$2,$3,$4)
+
+# retrieves the host path environment variable value with optional target specific extensions
+# $(call env_host_path[,target-name])
+env_host_path = $(call join_s,\
+    $(realpath \
+      $(cache.$1.extdir) \
+      $(addprefix $(DOBUILDDIR)/assets/adapters/,$(cache.$1.adapter)) \
+    ) \
+    $(PATH),\
+    : \
+  )
+
+# overridable helper to retrieve the target default path environment variable value
+# $(call env_default_path,target-name)
+env_default_path = $(call env_host_path,$1)
+
+# retrieves the last modification time of each files in seconds since epoch
+# $(call mtime,file...)
+mtime = $(if $1,$(shell stat -c '%Y' $1))
+
+# joins a list to a string
+# $(call join_s,element...[,separator])
+join_s = $(subst $( ),$(strip $2),$(strip $1))
+
+# splits a string to a list
+# $(call split_s,element...[,separator])
+split_s = $(subst $(strip $2),$( ),$(strip $1))
+
+# identity function
+# $(call identity,element...)
+identity = $1
+
+# filters all elements matching given predicate
+# $(call filter_p,element...,predicate[,predicate-context])
+filter_p = $(foreach elm,$1,$(if $(strip $(call $2,$(elm),$3)),$(elm),))
+
+# tests inequality of list 1 and list 2
+# $(call ne,elem1...,elem2...[,predicate])
+ne = $(call not,$(call eq,$1,$2,$3))
+
+# tests equality of list 1 and list 2
+# $(call eq,elem1...,elem2...[,predicate])
+eq = $(strip \
+    $(if \
+      $(call eq_s,$(words $1),$(words $2)), \
+      $(call eq_each,$1,$2,$(or $3,eq_s)) \
+    ) \
+  )
+
+# tests equality of elements in list 1 and list 2
+# $(call eq_each,list1_elem...,list2_elem...,predicate)
+eq_each = $(strip \
+    $(if $(strip $1),\
+      $(if \
+        $(call $3,$(firstword $1),$(firstword $2)), \
+        $(call eq_each,$(call tail,$1),$(call tail,$2),$3), \
+      ), \
+      1 \
+    ) \
+  )
+
+# encodes string to a valid make identifier
+# $(call id,string...)
+id = $(subst $( ),~,$(subst $(=),_,$(call base64_encode,$1)))
+
+# encodes string to base64
+# $(call base64_encode,string...)
+base64_encode = $(shell echo $1 | base64)
+
+# decodes string from base64
+# $(call base64_decode,string...)
+base64_decode = $(shell echo $1 | base64 -d)
+
+# replaces all elements which equals oldvalue with newvalue
+# $(call replace_all,element...,oldvalue,newvalue)
+replace_all = $(foreach elm,$1,$(if $(call eq_s,$(elm),$2),$3,$(elm)))
+
+# internal helper to generate the cartesian product of list1 to list8 using mapping function fn
+# $(call cartesian_product_helper,fn,emptylist_placeholder,elem1...,elem2..,elem3...,elem4...,elem5...,elem6...,elem7...,elem8...) 
+cartesian_product_helper = $(strip \
+    $(foreach f1,$3,\
+      $(foreach f2,$4,\
+        $(foreach f3,$5,\
+          $(foreach f4,$6,\
+            $(foreach f5,$7,\
+              $(foreach f6,$8,\
+                $(foreach f7,$9,\
+                  $(foreach f8,$(10),\
+                    $(call $1,\
+                      $(call replace_all,$(f1),$2,),\
+                      $(call replace_all,$(f2),$2,),\
+                      $(call replace_all,$(f3),$2,),\
+                      $(call replace_all,$(f4),$2,),\
+                      $(call replace_all,$(f5),$2,),\
+                      $(call replace_all,$(f6),$2,),\
+                      $(call replace_all,$(f7),$2,),\
+                      $(call replace_all,$(f8),$2,)\
+                    ) \
+                  ) \
+                ) \
+              ) \
+            ) \
+          ) \
+        ) \
+      ) \
+    ) \
+  )
+
+# generates the cartesian product of list1 to list8 using mapping function fn, mapping empty list to place holder value
+# $(call cartesian_product,fn,emptylist_placeholder,elem1...,elem2..,elem3...,elem4...,elem5...,elem6...,elem7...,elem8...) 
+cartesian_product = $(call cartesian_product_helper,$1,$2,\
+    $(or $(strip $3),$2),\
+    $(or $(strip $4),$2),\
+    $(or $(strip $5),$2),\
+    $(or $(strip $6),$2),\
+    $(or $(strip $7),$2),\
+    $(or $(strip $8),$2),\
+    $(or $(strip $9),$2),\
+    $(or $(strip $(10)),$2)\
+  )
+
+# combines elements of list1 to list8 using mapping function fn
+# $(call combine,fn,elem1...,elem2..,elem3...,elem4...,elem5...,elem6...,elem7...,elem8...) 
+combine = $(call cartesian_product,$1,~EmptyList~,$2,$3,$4,$5,$6,$7,$8,$9)
+
+# retrieves the version parts (major, minor) of a make version string
+# $(call make_version_parts,version-string)
+make_version_parts = $(shell echo '$1' | sed -ne 's![0]*\([^.]\+\).[0]*\([^.]\+\).*!\1 \2!p')
+
+# tests if make version is greater or equal to required version
+# $(call make_version_ge,required-version-string)
+make_version_ge = \
+  $(call ge_version, \
+    $(call make_version_parts,$(make_version)),\
+    $(call make_version_parts,$1)\
+  )
+
+#######################################################################################################################
+# Common defaults
+
+TOPDIR = $(call memorize,TOPDIR,$(DOBUILD_TOPDIR))
+PROJECTDIR = $(call memorize,PROJECTDIR,$(DOBUILD_PROJECTDIR))
+PROJECTNAME = $(call memorize,PROJECTNAME,$(DOBUILD_PROJECTNAME))
+DOBUILDDIR := $(patsubst %/,%,$(dir $(current_makefile)))
+OUTDIR = $(call memorize,OUTDIR,$(DOBUILD_OUTDIR))
+BUILDDIR = $(call memorize,BUILDDIR,$(DOBUILD_BUILDDIR))
+EXTDIR = $(call memorize,EXTDIR,$(DOBUILD_EXTDIR))
+
+BUILDVERBOSE = $(call memorize,BUILDVERBOSE,$(DOBUILD_BUILDVERBOSE))
+TESTVERBOSE = $(call memorize,TESTVERBOSE,$(DOBUILD_TESTVERBOSE))
+BUILDSILENT = $(if $(BUILDVERBOSE),,1)
+TESTSILENT = $(if $(TESTVERBOSE),,1)
+BUILD_TESTING = $(call memorize,BUILD_TESTING,$(DOBUILD_BUILDTESTING))
+
+VERSIONFILE = $(call memorize,VERSIONFILE,$(DOBUILD_PROJECTVERSIONFILE))
+VERSION = $(call memorize,VERSION,$(DOBUILD_PROJECTVERSION))
+
+USERID = $(call memorize,USERID,$(DOBUILD_USERID))
+
+HOST_CONTAINER = $(call memorize,HOST_CONTAINER,$(DOBUILD_HOSTCONTAINER))
+
+SOURCE_DATE_EPOCH ?= $(call memorize,SOURCE_DATE_EPOCH,$(shell $(DOBUILDDIR)/bin/get_source_date_epoch $(TOPDIR)))
+BUILDTIME = $(call memorize,BUILDTIME,$(shell date -u -d '@$(SOURCE_DATE_EPOCH)' --rfc-3339 ns 2>/dev/null))
+
+JOBSLOTS_DEFAULT = $(if $(findstring --jobserver-,$(make_cmdline)),2,$(shell nproc 2>/dev/null || echo '2'))
+JOBSLOTS = $(call memorize,JOBSLOTS,$(or $(DOBUILD_JOBSLOTS),$(JOBSLOTS_DEFAULT)))
+
+SKIP_MD5SUM = $(call memorize,SKIP_MD5SUM,$(DOBUILD_SKIPMD5SUM))
+SKIP_CURL = $(call memorize,SKIP_CURL,$(DOBUILD_SKIPCURL))
+SKIP_DEFAULTTARGET = $(call memorize,SKIP_DEFAULTTARGET,$(DOBUILD_SKIPDEFAULTTARGET))
+SKIP_EXTERNSYNC = $(call memorize,SKIP_EXTERNSYNC,$(DOBUILD_SKIPEXTERNSYNC))
+
+DEFAULTTARGET = $(BUILDTARGET)
+HOSTMARCH = 
+MARCH = 
+VENDOR = 
+DISTRIB_ID = $(VENDOR)
+SYS = 
+ABI = 
+DISTRIB_VERSION = 
+ID = 
+VARIANT = 
+
+EXCLUDE_HOSTMARCH = 
+EXCLUDE_MARCH = 
+EXCLUDE_VENDOR = 
+EXCLUDE_DISTRIB_ID = $(EXCLUDE_VENDOR)
+EXCLUDE_SYS = 
+EXCLUDE_ABI = 
+EXCLUDE_DISTRIB_VERSION = 
+EXCLUDE_ID = 
+EXCLUDE_VARIANT = 
+
+FILTER = $(call memorize,FILTER,$(DOBUILD_FILTER))
+EXCLUDEFILTER = $(call memorize,EXCLUDEFILTER,$(DOBUILD_EXCLUDEFILTER))
+MEMCHECKFILTER = $(call memorize,MEMCHECKFILTER,$(DOBUILD_FILTERMEMCHECK))
+
+$(VERBOSE)SILENT := @
+
+make_pid = $(call memorize,make_pid,$(shell echo "$$PPID"))
+make_cmdline = $(call memorize,make_cmdline,$(shell set -- $$(ps T 2>/dev/null | sed -n -e 's!^\s*$(make_pid)\s\+.*\($(call escape,$(MAKE),!)\s\+.*\)!\1!p') && echo "$$@"))
+
+machine = $(call memorize,machine,$(shell uname -m 2>/dev/null))
+
+make_version = $(MAKE_VERSION)
+make_version_req = 3.81
+
+# defines $, $; $% $= $: $(\#) $(\\) $($$) $( ) variables.
+# NOTE: $(,) has to be used within macros to avoid conflict with argument spliting operator ,
+, := ,
+; := ;
+% := %
+esc_slash := \\
+$(esc_slash) := \\
+esc_hash := \\\#
+$(esc_hash) := \#
+esc_equal := =
+$(esc_equal) := =
+esc_colon := :
+$(esc_colon) := :
+esc_dollar := $$
+$(esc_dollar) := $$
+esc_space := 
+esc_space += 
+$(esc_space) := 
+$(esc_space) +=
+define n
+
+
+endef
+
+DEFAULT_FMT := %s
+ifneq ($(COLOR),)
+  DEFAULT_FMT := %b
+  tc_red := \033[0;31m
+  tc_green := \033[0;32m
+  tc_brown := \033[0;33m
+  tc_blue := \033[0;34m
+  tc_purple := \033[0;35m
+  tc_cyan := \033[0;36m
+  tc_light_gray := \033[0;37m
+  tc_dark_gray := \033[1;30m
+  tc_light_green := \033[1;32m
+  tc_yellow := \033[1;33m
+  tc_light_blue := \033[1;34m
+  tc_light_purple := \033[1;35m
+  tc_light_cyan := \033[1;36m
+  tc_reset := \033[0m
+endif
+
+docker_runflags = 
+docker_buildflags = 
+image_buildargs = 
+project_targets = 
+
+#######################################################################################################################
+# Makefile dependencies
+
+MAKEFILE_DEPS += cat
+MAKEFILE_DEPS += id
+MAKEFILE_DEPS += echo
+MAKEFILE_DEPS += sed
+MAKEFILE_DEPS += pwd
+MAKEFILE_DEPS += cd
+MAKEFILE_DEPS += sort
+MAKEFILE_DEPS += printf
+MAKEFILE_DEPS += test
+MAKEFILE_DEPS += base64
+MAKEFILE_DEPS += stat
+
+#######################################################################################################################
+# Basic assertions
+
+ASSERTIONS += $(call assert_scalar,$(PROJECTDIR),Project directory PROJECTDIR='$(PROJECTDIR)' should not contain whitespaces)
+ASSERTIONS += $(call assert_scalar,$(OUTDIR),Output directory OUTDIR='$(OUTDIR)' should not contain whitespaces)
+ASSERTIONS += $(call assert_scalar,$(DOBUILDDIR),Script directory DOBUILDDIR='$(DOBUILDDIR)' should not contain whitespaces)
+ASSERTIONS += $(call assert,$(call not,$(filter $(abspath $(PROJECTDIR)),$(abspath $(sort $(OUTDIR) $(OUTDIRS))))),Project \
+location PROJECTDIR='$(abspath $(PROJECTDIR))' should not point to one of the output locations:$n \
+$(addsuffix $n,$(abspath $(sort $(OUTDIR) $(OUTDIRS)))))
+ASSERTIONS += $(call assert,$(SOURCE_DATE_EPOCH),Value of variable SOURCE_DATE_EPOCH should not be empty)
+ASSERTIONS += $(call assert,$(or $(SKIP_DEFAULTTARGET),$(filter $(DEFAULTTARGET),$(project_targets))),Default \
+target TARGET='$(DEFAULTTARGET)' is not contained in the list of project targets:$n \
+$(addsuffix $n,$(sort $(project_targets))))
+ASSERTIONS += $(call assert,$(or $(call not,$(project_targets)),$(strip $(TARGETS))),No target matches$(,) with include \
+FILTER=[$(call join_s,$(FILTER),$(,))] and exclude filter EXCLUDEFILTER=[$(call join_s,$(EXCLUDEFILTER),$(,))]$(,) \
+one of the project targets:$n $(addsuffix $n,$(sort $(project_targets))))
+
+EXPECTATIONS += $(call expect,$(call make_version_ge,$(make_version_req)),Using old make version=$(make_version)$(,) \
+consider upgrading to a newer version >= $(make_version_req))
+
+endif

docker-compose.yml

@@ -0,0 +1,73 @@
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+version: "2.4"
+
+services:
+  check:
+    build:
+      context: .
+      args:
+        - DOCKER_VERSION=$COMPOSEENV_DOCKER_VERSION
+        - REGISTRY_PREFIX=$COMPOSEENV_REGISTRY_PREFIX
+        - DOCKER_DOWNLOAD=$COMPOSEENV_DOCKER_DOWNLOAD
+        - BATS_DOWNLOAD=$COMPOSEENV_BATS_DOWNLOAD
+        - DUMB_INIT_DOWNLOAD=$COMPOSEENV_DUMB_INIT_DOWNLOAD
+        - LIBFAKETIME_DOWNLOAD=$COMPOSEENV_LIBFAKETIME_DOWNLOAD
+        - CAPATH=$COMPOSEENV_CAPATH
+      dockerfile: tests/runners/bats.dockerfile
+    image: dobuild_bats:${COMPOSEENV_PROJECT_VERSION}
+    depends_on:
+      - dind
+    environment:
+      DOCKER_HOST: tcp://dind:2375
+      DOCKER_VERSION: $COMPOSEENV_DOCKER_VERSION
+      REGISTRY_PREFIX: $COMPOSEENV_REGISTRY_PREFIX
+      TMPDIR: /var/tmp
+    volumes:
+      - tmp:/var/tmp
+    volumes_from:
+      - dind:ro
+    networks:
+      - service
+    stdin_open: true
+    tty: true
+    working_dir: ${COMPOSEENV_PROJECTPATH}
+    command: ["bash"]
+  
+  dind:
+    build:
+      context: .
+      args:
+        - DOCKER_VERSION=$COMPOSEENV_DOCKER_VERSION
+        - REGISTRY_PREFIX=$COMPOSEENV_REGISTRY_PREFIX
+        - CAPATH=$COMPOSEENV_CAPATH
+      dockerfile: tests/runners/dind.dockerfile
+    image: dobuild_dind:${COMPOSEENV_PROJECT_VERSION}
+    environment:
+      DOCKER_HOST: tcp://localhost:2375
+    volumes:
+      - /etc/timezone:/etc/timezone:ro
+      - /etc/localtime:/etc/localtime:ro
+      - docker:/var/lib/docker
+      - tmp:/var/tmp
+    networks:
+      - service
+    privileged: true
+    command: ["dockerd", "--host=tcp://0.0.0.0:2375", "--storage-driver", "overlay2"]
+
+volumes:
+  tmp:
+  docker:
+
+networks:
+  service:
+    driver: bridge
+

docker.mk

@@ -0,0 +1,499 @@
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+ifndef _DOBUILD_INCLUDE_GUARD_DOCKER
+_DOBUILD_INCLUDE_GUARD_DOCKER := 1
+
+current_makefile := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
+
+ifndef defaults_include_guard
+  include $(patsubst %/,%,$(dir $(current_makefile)))/defaults.mk
+endif
+
+#######################################################################################################################
+# Overridable docker defaults
+
+DOCKER ?= docker
+DOBUILD_DOCKERFILE ?= $(PROJECTDIR)/%MARCH%-%DISTRIB_ID%-%ID%.dockerfile
+DOBUILD_RUNCMD ?= 
+
+#######################################################################################################################
+# Overridable docker macros, hooks to customize target default values
+
+# hook called to retrieve the target dockerfile name,
+# may return an empty value in which case the default dockerfile is used
+# $(call dobuild_dockerfile,target-name)
+dobuild_dockerfile ?= $(DOCKERFILE)
+
+# hook called to retrieve the target image build context,
+# may return an empty value in which case OUTDIR is used
+# $(call dobuild_image_context,target-name)
+dobuild_image_context ?= 
+
+# hook called to retrieve the target image archive file name, 
+# may return an empty value
+# $(call dobuild_image_archivefile,target-name)
+dobuild_image_archivefile ?= $(call image_default_archivefile,$1)
+
+# hook called to retrieve the target image prerequisites, 
+# may return an empty list
+# $(call dobuild_image_prerequisites,target-name)
+dobuild_image_prerequisites ?= 
+
+# hook called to retrieve the target image names,
+# may return an empty list in which case the name is derived from the build target name
+# $(call dobuild_image_names,target-name)
+dobuild_image_names ?=
+
+# hook called to retrieve the target container user,
+# may return an empty value in which case CONTAINER_USER is used
+# $(call dobuild_container_user,target-name)
+dobuild_container_user ?= 
+
+# hook called to retrieve the target container group, 
+# may return an empty value in which case CONTAINER_GROUP is used
+# $(call dobuild_container_group,target-name)
+dobuild_container_group ?= 
+
+# hook called to retrieve the target container run command, 
+# may return an empty value in which case CONTAINER_CMD is used
+# $(call dobuild_container_cmd,target-name)
+dobuild_container_cmd ?= 
+
+# hook called to retrieve the target image build arguments,
+# may return an empty list
+# $(call dobuild_image_buildargs,target-name)
+dobuild_image_buildargs ?= \
+  $(addprefix HOSTMARCH=,%HOSTMARCH%) \
+  $(addprefix MARCH=,%MARCH%) \
+  $(addprefix DISTRIB_ID=,%DISTRIB_ID%) \
+  $(addprefix DISTRIB_VERSION=,%DISTRIB_VERSION%) \
+  $(addprefix SYS=,%SYS%) \
+  $(addprefix ABI=,%ABI%) \
+  $(addprefix ID=,%ID%) \
+  $(addprefix VARIANT=,%VARIANT%)
+
+# hook called to retrieve the target docker build flags,
+# may return an empty list
+# $(call dobuild_docker_buildflags,target-name)
+dobuild_docker_buildflags ?= 
+
+# hook called to retrieve the target docker run flags,
+# may return an empty list
+# $(call dobuild_docker_runflags,target-name)
+dobuild_docker_runflags ?=
+
+#######################################################################################################################
+# Docker macros
+
+# retrieves the version parts (major, minor) of a docker version string
+# $(call docker_version_parts,version-string)
+docker_version_parts = $(shell echo '$1' | sed -ne 's![^0-9]*[0]*\([^.]\+\).[0]*\([^.]\+\).*!\1 \2!p')
+
+# tests if docker version is greater or equal to required version
+# $(call docker_version_ge,required-version-string)
+docker_version_ge = \
+  $(call ge_version, \
+    $(call docker_version_parts,$(docker_version)),\
+    $(call docker_version_parts,$1)\
+  )
+
+# retrieves the target default docker identifier file
+# $(call docker_default_idfile,target-name...)
+docker_default_idfile = $(addsuffix /DoBuildFiles/docker.idfile,$(addprefix $(OUTDIR)/,$1))
+
+# retrieves the target default dockerfile name
+# $(call image_default_dockerfile,target-name...)
+image_default_dockerfile = $(addsuffix /Dockerfile,$(addprefix $(OUTDIR)/,$1))
+
+# retrieves the target default image archive file name
+# $(call image_default_archivefile,target-name...)
+image_default_archivefile = $(addsuffix /image-root$(addprefix -,$(VERSION)).tar,$(addprefix $(OUTDIR)/,$1))
+
+# retrieves the target default image prerequisites
+# $(call image_default_prerequisites,target-name)
+image_default_prerequisites = 
+
+# retrieves the target default image build flags
+# $(call image_default_buildflags,target-name)
+image_default_buildflags = $(addprefix --build-arg ,$(strip $(cache.$1.image_buildargs)))
+
+# retrieves the target default environment path variable value
+# $(call env_default_path,target-name)
+env_default_path = $(call join_s,\
+    $(abspath \
+      $(cache.$1.container_extdir) \
+      $(addprefix $(container_dobuilddir)/assets/adapters/,$(cache.$1.adapter)) \
+    ) \
+    $(call image_env_path,$1),\
+    : \
+  )
+
+# retrieves the target default extension directory value
+# $(call container_default_exdir,target-name)
+container_default_extdir = $(if $(docker_portable_workspace),$(container_extdir),$(cache.$1.extdir))
+
+# retrieves the target default run flags
+# $(call docker_default_runflags,target-name)
+docker_default_runflags = \
+  $(if $(and $(docker_portable_workspace),$(realpath $(cache.$1.extdir))),--volume '$(realpath $(cache.$1.extdir)):$(abspath $(cache.$1.container_extdir)):cached')
+
+# retrieves the target image path env variable value
+# $(call image_env_path,target-name)
+image_env_path = $(shell $(DOCKER) inspect -f '{{range $$i, $$var := .Config.Env}}{{println $$var}}{{end}}' '$(call image_name,$1)' | sed -n -e 's!^PATH=\(.*\)!\1!p')
+
+# formats a list of target properties as string
+# $(call target_properties_format,property...)
+image_target_properties_format = \
+  $(call join_s, \
+    $(call target_property_host_arch,$1) \
+    $(call target_property_arch_sub,$1) \
+    $(call target_property_vendor_or_distrib_id,$1) \
+    $(call target_property_distrib_version,$1) \
+    $(call target_property_sys,$1) \
+    $(call target_property_abi,$1) \
+    $(PROJECTNAME) \
+    $(call target_property_id,$1) \
+    $(call replace_all,$(call target_property_variant,$1),release,), \
+  /)
+
+# retrieves the target default image qualified name (registry/repository:tag-version)
+# $(call image_default_name,target-name[,tag-version][,registry-prefix])
+image_default_name = \
+  $(call join_s, \
+    $3 \
+    $(call image_target_properties_format,$(call target_properties,$1)) \
+    $(addprefix :,$2) \
+  )
+
+# retrieves the target image archive file name
+# $(call image_archivefile,target-name...)
+image_archivefile = $(foreach target,$1,$(cache.$(target).image_archivefile))
+
+# retrieves the target image build target name
+# $(call image_buildtarget,target-name...)
+image_buildtarget = $(call image_idfile,$(filter $1,$(DOCKER_TARGETS)))
+
+# retrieves the target image identifier file
+# $(call image_idfile,target-name...)
+image_idfile = $(addsuffix -image.idfile,$(addprefix $(OUTDIR)/,$1))
+
+# retrieves the unique local identifier from id file
+# $(call image_id,id-file...)
+image_id = $(shell cat $1 2>/dev/null)
+
+# retrieves the image hash value from id file
+# $(call image_hash,id-file...)
+image_hash = $(patsubst sha256:%,%,$(call image_id,$1))
+
+# retrieves the target image name
+# $(call image_name,target-name...)
+image_name = $(foreach target,$1,$(cache.$(target).image_name))
+
+# creates an image build command
+# $(call image_build_cmd,dockerfile,tag...,context[,docker-build-flag...][,output-prefix])
+image_build_cmd = $(call echo_cmd,$(DOCKER),build --rm $4 --file '$1' $(addprefix --tag ,$2) '$3',$(addprefix $5 ,docker))
+
+# creates an image build rule command for given target configuration, assuming the first prerequisite is the dockerfile
+# $(call image_build_rule_cmd,target-name,idfile)
+image_build_rule_cmd = { \
+    mkdir -p $(dir $2); \
+    $(call image_build_cmd,$<, \
+      $(cache.$1.image_tags),$(cache.$1.image_context),$(docker_buildflags) $(cache.$1.docker_buildflags) --iidfile '$2',\
+      $(call color,green,TARGET=$1)); \
+  }
+
+# creates an image build rule
+# $(call image_build_rule,target-name)
+image_build_rule = \
+  build/image/$1 $$(cache.$1.docker_idfile): $$(cache.$1.dockerfile) $$(cache.$1.image_prerequisites) $$(EXTRACT_TARGETS) $$(MAKEFILE_LIST); \
+    $$(SILENT)$$(call image_build_rule_cmd,$1,$$(cache.$1.docker_idfile))
+
+# creates an image tag rule command for given target configuration
+# $(call image_tag_rule_cmd,target-name,oci-idfile,docker-idfile)
+# NOTE: workaround for moby/moby issue #39796
+# referencing images with local sha256:id does not work when referenced as base image using BuildKit,
+# therefore we tag the image additionally with its local unique identifier
+image_tag_rule_cmd = { \
+    mkdir -p $(dir $2); \
+    name='$(call image_default_name,$1,$(call image_hash,$3),)'; \
+       $(call echo_cmd,$(DOCKER),tag '$(call image_id,$3)' "$$name",docker) \
+    && echo "$$name" > '$2'; \
+  }
+
+# creates an image tag rule
+# $(call image_tag_rule,target-name)
+image_tag_rule = \
+  $$(cache.$1.image_idfile): $$(cache.$1.docker_idfile); \
+    $$(SILENT)$$(call image_tag_rule_cmd,$1,$$(cache.$1.image_idfile),$$(cache.$1.docker_idfile))
+
+# creates an image save command
+# $(call image_save_cmd,image-name,output-file[,output-prefix])
+image_save_cmd = $(call echo_cmd,$(DOCKER),save '$1' $(addprefix --output ,$2),$(addprefix $3 ,docker))
+
+# creates an image save rule command for given target configuration
+# $(call image_save_rule_cmd,target-name,archivefile)
+image_save_rule_cmd = $(call image_save_cmd,$(call image_name,$1),$2,$(call color,green,TARGET=$1))
+
+# creates an image save rule
+# $(call image_save_rule,target-name)
+image_save_rule = \
+  package/image/$1 $$(cache.$1.image_archivefile): $$(cache.$1.image_idfile); \
+    $$(SILENT)$$(call image_save_rule_cmd,$1,$$(cache.$1.image_archivefile))
+
+# creates an image load command
+# $(call image_load_cmd,image-name,input-file)
+image_load_cmd = $(call echo_if_silent_cmd,docker image load $2) \
+  && $(DOCKER) tag "$$($(DOCKER) load --quiet --input '$2' | sed -n -e 's!^Loaded image ID:\s\+\(.*\)!\1!p')" $1
+
+# creates an image load rule command for given target configuration, assuming the first prerequisite is the image 
+# archive file to load
+# $(call image_load_rule_cmd,image-name)
+image_load_rule_cmd = \
+  $(call image_load_cmd,$1,$<)
+
+# creates an image remove command
+# $(call image_rm_cmd,image-name...[,output-prefix])
+image_rm_cmd = $(if $(strip $1),$(call echo_cmd,$(DOCKER),rmi -f $1,$(addprefix $2 ,docker)),true)
+
+# creates an image clean command
+# $(call image_clean_cmd,target-name[,output-prefix])
+image_clean_cmd = { \
+    $(call image_rm_cmd,$(cache.$1.image_tags),$2) 2>/dev/null; \
+    rm -f '$(cache.$1.docker_idfile)'; \
+  }
+
+# creates an image clean rule command
+# $(call image_clean_rule_cmd,target-name)
+image_clean_rule_cmd = $(call image_clean_cmd,$1,$(call color,green,TARGET=$1))
+
+# creates an image clean rule
+# $(call image_clean_rule,target-name)
+image_clean_rule = \
+  clean/image/$1: ; \
+    $$(SILENT)-$$(call image_clean_rule_cmd,$1)
+
+# creates an image dist clean rule command
+# $(call image_distclean_rule_cmd,target-name)
+image_distclean_rule_cmd = { \
+    $(call echo_if_silent_cmd,$(call color,green,TARGET=$1) distclean image); \
+    $(call image_clean_cmd,$1,); \
+    $(call image_rm_cmd,$(call image_name,$1),); \
+    rm -f '$(cache.$1.image_idfile)'; \
+  }
+
+# creates an image dist clean rule
+# $(call image_distclean_rule,target-name)
+image_distclean_rule = \
+  distclean/image/$1: ; \
+    $$(SILENT)-$$(call image_distclean_rule_cmd,$1)
+
+# retrieves the target container default working directory
+# $(call container_default_workdir,target-name...)
+container_default_workdir = $(addprefix $(container_outdir)/,$1)
+
+# creates a command which is executed in a container
+# $(call container_run_cmd,[target-name],image-name,workdir,command...[,docker-run-flag...][,output-command])
+container_run_cmd = \
+     $(call echo_if_silent_cmd,$(call color,green,$(addprefix TARGET=,$1)) container_run $(or $6,$4)) \
+  && $(DOBUILDDIR)/bin/container_run $5 --workdir '$3' '$2' $4
+
+# creates a container run rule
+# $(call container_run_rule,target-name)
+container_run_rule = \
+  run/container/$1: $$(cache.$1.image_idfile); \
+    $$(SILENT)-$$(call run_cmd,$1,$$(cache.$1.container_cmd))
+
+# creates a container run rule command
+# $(call run_cmd,target-name,command[,args...][,output-command])
+run_cmd = $(call container_run_cmd,$1,$(call image_name,$1),$(cache.$1.container_workdir),$2 $3,\
+  $(docker_runflags) -e 'PATH=$(cache.$1.env_path)' \
+  --user '$(cache.$1.container_user):$(cache.$1.container_group)' $(cache.$1.docker_runflags),$(or $4,$2) $3)
+
+#######################################################################################################################
+# Docker rule target configuration
+
+DOCKERFILE = $(call memorize,DOCKERFILE,$(DOBUILD_DOCKERFILE))
+
+CONTAINER_CMD = $(call memorize,CONTAINER_CMD,$(DOBUILD_RUNCMD))
+CONTAINER_USER = $(USERID)
+CONTAINER_GROUP = $(USERID)
+
+docker_version = $(call memorize,docker_version,$(shell $(DOCKER) version --format '{{.Client.Version}}'))
+docker_version_req = 18.09
+
+container_dobuilddir = /mnt/dobuild
+container_projectdir = $(container_dobuilddir)/workspace/src
+container_outdir = $(container_dobuilddir)/workspace/out
+container_extdir = $(container_dobuilddir)/workspace/extension
+container_destdir = $(if $(DESTDIR),$(container_dobuilddir)/workspace/stage)
+
+docker_portable_workspace = $(call not,$(HOST_CONTAINER))
+
+ifeq ($(docker_portable_workspace),)
+  container_projectdir = $(abspath $(PROJECTDIR))
+  container_dobuilddir = $(abspath $(DOBUILDDIR))
+  container_outdir = $(abspath $(OUTDIR))
+  container_destdir = $(abspath $(DESTDIR))
+endif
+
+container_cpus = $(INTERNPARALLEL)
+container_cpuperiod = 100000
+container_quota = $(call bc,($(container_cpus)*$(container_cpuperiod)))
+# allow twice as much parallel executions, while container are already limited by cgroup
+container_nproc = $(call bc,(2*$(container_cpus)))
+
+docker_runflags += $(DOCKER_RUNFLAGS)
+docker_runflags += $(addprefix --cpus ,$(container_cpus))
+docker_runflags += --env SOURCE_DATE_EPOCH
+docker_runflags += --env BUILDTIME
+docker_runflags += --env DOBUILD_VERBOSE
+docker_runflags += --env DOBUILD_BUILDVERBOSE
+docker_runflags += --env DOBUILD_TESTVERBOSE
+docker_runflags += --env DOBUILD_NPROC$(addprefix $(=),$(container_nproc))
+
+ifeq ($(HOST_CONTAINER),)
+  docker_runflags += --volume '$(realpath $(PROJECTDIR)):$(container_projectdir):cached'
+  docker_runflags += --volume '$(realpath $(DOBUILDDIR)):$(container_dobuilddir):cached'
+  docker_runflags += --volume '$(realpath $(OUTDIR)):$(container_outdir):delegated'
+  ifneq ($(container_destdir),)
+    ASSERTIONS += $(call assert,$(realpath $(DESTDIR)),Staging directory DESTDIR='$(DESTDIR)' doesn't exist)
+    docker_runflags += --volume '$(realpath $(DESTDIR)):$(container_destdir):delegated'
+  endif
+endif
+
+image_buildargs += $(IMAGE_BUILDARGS)
+image_buildargs += 'PARALLELMFLAGS=$(addprefix -j,$(container_nproc))'
+image_buildargs += 'REGISTRY_PREFIX=$(REGISTRY_PREFIX)'
+
+docker_buildflags += $(DOCKER_BUILDFLAGS)
+docker_buildflags += $(addprefix --cpu-period ,$(container_cpuperiod))
+docker_buildflags += $(addprefix --cpu-quota ,$(container_quota))
+docker_buildflags += $(addprefix --build-arg ,$(image_buildargs))
+
+docker_defaulttarget = $(if $(SKIP_DEFAULTTARGET),,$(DEFAULTTARGET))
+docker_targets = $(filter $(docker_defaulttarget),$(DOCKER_TARGETS))
+docker_selected_targets = $(if $(SKIP_DEFAULTTARGET),$(DOCKER_TARGETS),$(docker_targets))
+docker_active_targets = $(call memorize,docker_active_targets,$(call target_filter,$(FILTER),$(docker_selected_targets),$(EXCLUDEFILTER)))
+
+docker_build_targets = $(call image_idfile,$(docker_active_targets))
+docker_run_targets = $(addprefix run/container/,$(docker_active_targets))
+docker_clean_targets = $(addprefix clean/image/,$(docker_active_targets))
+docker_dist_targets = 
+docker_distclean_targets = $(addprefix distclean/image/,$(docker_active_targets))
+docker_rule_targets = $(addsuffix /dockerrules.mk,$(OUTDIR))
+docker_outdirs = $(addprefix $(OUTDIR)/,$(docker_active_targets))
+
+project_targets += $(DOCKER_TARGETS)
+
+BUILD_TARGETS += $(docker_build_targets)
+DIST_TARGETS += $(docker_dist_targets)
+DISTCLEAN_TARGETS += $(docker_distclean_targets)
+CLEAN_TARGETS += $(docker_clean_targets)
+RUN_TARGETS += $(docker_run_targets)
+RULE_TARGETS += $(docker_rule_targets)
+TARGETS += $(docker_active_targets)
+OUTDIRS += $(docker_outdirs)
+
+#######################################################################################################################
+# Makefile dependencies
+
+MAKEFILE_DEPS += $(DOCKER)
+MAKEFILE_DEPS += cat
+MAKEFILE_DEPS += chmod
+MAKEFILE_DEPS += rm
+MAKEFILE_DEPS += mkdir
+
+#######################################################################################################################
+# Docker rules
+
+$(docker_rule_targets):
+	$(SILENT) \
+	{ \
+	  echo '$(\#) generated file - do not edit!!!'; \
+	  echo; \
+	  ID='$(call id,$@)'; \
+	  echo "ifndef $${ID}_include_guard"; \
+	  echo "$${ID}_include_guard := 1"; \
+	  echo; \
+	$(foreach target,$(DOCKER_TARGETS),\
+	  echo '$(\#)$(\#) BEGIN of docker $(target) configuration'; \
+	  echo; \
+	  echo '$(\#)$(\#)$(\#) defaults'; \
+	  echo '$(target) ?= $$(call memorize,$(target),$(call target_properties_parse,$(target)))'; \
+	  echo '$(target).env_path = $$(call env_default_path,$$1)'; \
+	  echo '$(target).adapter ?= '; \
+	  echo '$(target).extdir ?= '; \
+	  echo '$(target).dockerfile ?= $$(call dobuild_dockerfile,$$1)'; \
+	  echo '$(target).image_context ?= $$(call dobuild_image_context,$$1)'; \
+	  echo '$(target).image_archivefile ?= $$(call dobuild_image_archivefile,$$1)'; \
+	  echo '$(target).image_prerequisites ?= $$(call dobuild_image_prerequisites,$$1)'; \
+	  echo '$(target).image_tags ?= $$(call dobuild_image_names,$$1)'; \
+	  echo '$(target).image_buildargs ?= $$(call dobuild_image_buildargs,$$1)'; \
+	  echo '$(target).image_name = $$(call image_id,$$(cache.$(target).image_idfile))'; \
+	  echo '$(target).container_workdir = $$(call container_default_workdir,$$1)'; \
+	  echo '$(target).container_extdir = $$(call container_default_extdir,$$1)'; \
+	  echo '$(target).container_user ?= $$(call dobuild_container_user,$$1)'; \
+	  echo '$(target).container_group ?= $$(call dobuild_container_group,$$1)'; \
+	  echo '$(target).container_cmd ?= $$(call dobuild_container_cmd,$$1)'; \
+	  echo '$(target).docker_buildflags ?= $$(call dobuild_docker_buildflags,$$1)'; \
+	  echo '$(target).docker_runflags ?= $$(call dobuild_docker_runflags,$$1)'; \
+	  echo; \
+	  echo '$(\#)$(\#)$(\#) cached values'; \
+	  echo 'cache.$(target).image_idfile = $$(call memorize,cache.$(target).image_idfile,$$(call image_idfile,$(target)))'; \
+	  echo 'cache.$(target).docker_idfile = $$(call memorize,cache.$(target).docker_idfile,$$(call docker_default_idfile,$(target)))'; \
+	  echo 'cache.$(target).env_path = $$(call memorize,cache.$(target).env_path,$$(call $(target).env_path,$(target)))'; \
+	  echo 'cache.$(target).adapter = $$(call memorize,cache.$(target).adapter,$$(call target_get_and_subst,$(target),adapter,))'; \
+	  echo 'cache.$(target).extdir = $$(call memorize,cache.$(target).extdir,$$(call target_get_and_subst,$(target),extdir,$$(EXTDIR)))'; \
+	  echo 'cache.$(target).dockerfile = $$(call memorize,cache.$(target).dockerfile,$$(call target_get_and_subst,$(target),dockerfile,$$(call image_default_dockerfile,$(target))))'; \
+	  echo 'cache.$(target).image_context = $$(call memorize,cache.$(target).image_context,$$(call target_get_and_subst,$(target),image_context,$$(OUTDIR)))'; \
+	  echo 'cache.$(target).image_archivefile = $$(call memorize,cache.$(target).image_archivefile,$$(call target_get_and_subst,$(target),image_archivefile,))'; \
+	  echo 'cache.$(target).image_prerequisites = $$(call memorize,cache.$(target).image_prerequisites,$$(call target_get_and_subst,$(target),image_prerequisites,) $$(call image_default_prerequisites,$(target)))'; \
+	  echo 'cache.$(target).image_tags = $$(call memorize,cache.$(target).image_tags,$$(call target_get_and_subst,$(target),image_tags,$$(call image_default_name,$(target),$$(VERSION),$$(REGISTRY_PREFIX))))'; \
+	  echo 'cache.$(target).image_buildargs = $$(call memorize,cache.$(target).image_buildargs,$$(call target_get_and_subst,$(target),image_buildargs,))'; \
+	  echo 'cache.$(target).image_name = $$(call memorize,cache.$(target).image_name,$$(call $(target).image_name,$(target)))'; \
+	  echo 'cache.$(target).container_workdir = $$(call memorize,cache.$(target).container_workdir,$$(call $(target).container_workdir,$(target)))'; \
+	  echo 'cache.$(target).container_extdir = $$(call memorize,cache.$(target).container_extdir,$$(call $(target).container_extdir,$(target)))'; \
+	  echo 'cache.$(target).container_user = $$(call memorize,cache.$(target).container_user,$$(or $$(call $(target).container_user,$(target)),$$(CONTAINER_USER)))'; \
+	  echo 'cache.$(target).container_group = $$(call memorize,cache.$(target).container_group,$$(or $$(call $(target).container_group,$(target)),$$(CONTAINER_GROUP)))'; \
+	  echo 'cache.$(target).container_cmd = $$(call memorize,cache.$(target).container_cmd,$$(or $$(call $(target).container_cmd,$(target)),$$(CONTAINER_CMD)))'; \
+	  echo 'cache.$(target).docker_buildflags = $$(call memorize,cache.$(target).docker_buildflags,$$(call target_get_and_subst,$(target),docker_buildflags,) $$(call image_default_buildflags,$(target)))'; \
+	  echo 'cache.$(target).docker_runflags = $$(call memorize,cache.$(target).docker_runflags,$$(call $(target).docker_runflags,$(target)) $$(call docker_default_runflags,$(target)))'; \
+	  echo; \
+	  echo '$(\#)$(\#)$(\#) rules'; \
+	  echo '$(call image_build_rule,$(target))'; \
+	  echo; \
+	  echo '$(call image_tag_rule,$(target))'; \
+	  echo; \
+	  echo '$(call image_save_rule,$(target))'; \
+	  echo; \
+	  echo '$(call image_clean_rule,$(target))'; \
+	  echo; \
+	  echo '$(call image_distclean_rule,$(target))'; \
+	  echo; \
+	  echo '$(call container_run_rule,$(target))'; \
+	  echo; \
+	  echo '$(\#)$(\#) END of docker $(target) configuration'; \
+	  echo; \
+	) \
+	  echo 'endif'; \
+	  echo; \
+	} > $@
+
+#######################################################################################################################
+# Docker assertions
+
+ASSERTIONS += $(call assert,$(DOCKER),Value of variable DOCKER should not be empty)
+
+EXPECTATIONS += $(call expect,$(call docker_version_ge,$(docker_version_req)),Using old docker version=$(docker_version)$(,) \
+consider upgrading to a newer version >= $(docker_version_req))
+
+endif
+

examples/cmake-gtest-example/CMakeLists.txt

@@ -0,0 +1,31 @@
+cmake_minimum_required(VERSION 3.10)
+
+project(cmake-gtest-example VERSION 0.0.1 DESCRIPTION "CMake gtest example")
+
+option(THREADS_PREFER_PTHREAD_FLAG "If the use of the -pthread compiler and linker flag is prefered then the caller can set" ON)
+option(POSITION_INDEPENDENT_CODE "This variable is used to initialize the POSITION_INDEPENDENT_CODE property on all the targets" ON)
+
+find_package(PkgConfig REQUIRED)
+find_package(Threads REQUIRED)
+
+pkg_check_modules(GTEST gtest_main gtest)
+
+include(CTest)
+include(GoogleTest)
+
+add_executable(alltests
+  test_stringcompare.cpp
+)
+
+target_include_directories(alltests PUBLIC ${GTEST_INCLUDE_DIRS})
+target_compile_options(alltests PUBLIC -Wall -Wextra ${GTEST_CFLAGS})
+target_link_libraries(alltests PUBLIC Threads::Threads ${GTEST_LIBRARIES} gtest_main)
+
+enable_testing()
+gtest_discover_tests(alltests TEST_PREFIX alltests:)
+
+add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND})
+add_dependencies(check alltests)
+
+add_custom_target(memcheck COMMAND ${CMAKE_CTEST_COMMAND} -T memcheck)
+add_dependencies(memcheck alltests)

examples/cmake-gtest-example/Makefile

@@ -0,0 +1,94 @@
+SHELL := /bin/sh
+MAKEFILE := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
+MAKEFLAGS += --no-builtin-rules
+
+.SUFFIXES:
+
+.PHONY: default
+default: all
+
+#######################################################################################################################
+# Overridable project defaults
+
+DOBUILD_TOPDIR ?= $(DOBUILDDIR)
+DOBUILD_PROJECTDIR ?= $(patsubst %/,%,$(dir $(MAKEFILE)))
+DOBUILD_DOCKERFILE ?= $(PROJECTDIR)/%ID%.dockerfile
+
+PROJECTDIR = $(DOBUILD_PROJECTDIR)
+DOBUILDDIR ?= $(PROJECTDIR)/../..
+
+include $(DOBUILDDIR)/defaults.mk
+
+#######################################################################################################################
+# Project defaults and macros
+
+DEFAULTTARGET = x86_64-ubuntu@bionic+builder@debug
+
+FETCHDIR = $(BUILDDIR)/.deps
+
+#######################################################################################################################
+# Project dependencies
+
+GTEST_VERSION = 1.8.1
+IMAGE_BUILDARGS += GTEST_VERSION=$(GTEST_VERSION)
+IMAGE_BUILDARGS += GTEST_MTIME=$(call mtime,$(FETCHDIR)/googletest-release-$(GTEST_VERSION).tar.gz)
+FETCH_TARGETS += $(FETCHDIR)/googletest-release-$(GTEST_VERSION).tar.gz
+$(FETCHDIR)/googletest-release-$(GTEST_VERSION).tar.gz: URL := https://github.com/google/googletest/archive/release-$(GTEST_VERSION).tar.gz
+$(SKIP_MD5SUM)$(FETCHDIR)/googletest-release-$(GTEST_VERSION).tar.gz: MD5 := 2e6fbeb6a91310a16efe181886c59596
+
+#######################################################################################################################
+# Architecture-specific rule target configuration
+
+CMAKE_TARGETS += $(call target_properties_combine,\
+    ,\
+    x86_64 arm32v7,\
+    ubuntu@bionic alpine@3.10,\
+    ,\
+    ,\
+    builder,\
+    ,\
+    debug release \
+  )
+DOCKER_TARGETS += $(CMAKE_TARGETS)
+
+#######################################################################################################################
+# Common rule target configuration
+
+CURLFLAGS += -s
+
+DOCKER_RUNFLAGS += --cap-add SYS_PTRACE
+DOCKER_RUNFLAGS += --security-opt seccomp=unconfined
+
+OUTDIRS += $(OUTDIR)/src
+
+EXTRACT_TARGETS += $(patsubst $(FETCHDIR)/%.tar.gz,$(OUTDIR)/src/%,$(FETCH_TARGETS))
+
+#######################################################################################################################
+# Makefile dependencies
+
+MAKEFILE_DEPS += gzip
+MAKEFILE_DEPS += tar
+MAKEFILE_DEPS += touch
+MAKEFILE_DEPS += mkdir
+
+#######################################################################################################################
+# Rules
+
+include $(DOBUILDDIR)/cmake.mk
+include $(DOBUILDDIR)/docker.mk
+include $(DOBUILDDIR)/standardrules.mk
+
+$(OUTDIR)/src/%: $(FETCHDIR)/%.tar.gz | $(OUTDIRS)
+	$(SILENT) \
+	     $(call echo_if_silent_cmd,tar -C $(dir $@) -xf $<) \
+	  && tar -I 'gzip -n' -C $(dir $@) -xf $< \
+	  && touch $@
+
+$(FETCH_TARGETS): | $(FETCHDIR)
+	$(SILENT)$(call curl,$@,$(URL),$(MD5))
+
+$(FETCHDIR):
+	$(SILENT)mkdir -p $@
+
+.DELETE_ON_ERROR: $(FETCH_TARGETS)
+

examples/cmake-gtest-example/builder.dockerfile

@@ -0,0 +1,30 @@
+ARG REGISTRY_PREFIX=''
+ARG BUILDER_TAG=0.0.1
+
+ARG USERID=1000
+ARG PARALLELMFLAGS=-j2
+ARG HOSTMARCH=x86_64
+ARG MARCH=$HOSTMARCH
+ARG DISTRIB_ID=ubuntu
+ARG DISTRIB_VERSION=bionic
+ARG SYS=linux
+ARG ABI=gnu
+
+FROM ${REGISTRY_PREFIX}${HOSTMARCH}/${MARCH}/${DISTRIB_ID}/${DISTRIB_VERSION}/${SYS}/${ABI}/cmake/builder-template:${BUILDER_TAG}
+
+COPY src /usr/local/src
+
+ARG PARALLELMFLAGS=-j2
+
+ARG GTEST_VERSION=1.8.1
+ARG GTEST_MTIME=
+
+RUN set -x \
+  && [ -n "$GTEST_MTIME" ] && export SOURCE_DATE_EPOCH="$GTEST_MTIME" \
+  && builddir="/tmp/out" \
+  && mkdir -p "$builddir" \
+  && cd "$builddir" \
+  && cmake "/usr/local/src/googletest-release-$GTEST_VERSION" \
+  && make "$PARALLELMFLAGS" install \
+  && rm -rf "$builddir"
+

examples/cmake-gtest-example/test_stringcompare.cpp

@@ -0,0 +1,18 @@
+#include <gtest/gtest.h>
+
+#include <string>
+using std::string;
+
+char const actualValTrue[] = "hello gtest";
+char const actualValFalse[] = "hello world";
+char const expectVal[] = "hello gtest";
+
+TEST(StrCompare, CStrEqual)
+{
+  EXPECT_STREQ(expectVal, actualValTrue);
+}
+
+TEST(StrCompare, CStrNotEqual)
+{
+  EXPECT_STRNE(expectVal, actualValFalse);
+}

examples/gradle-junit5-example/Makefile

@@ -0,0 +1,57 @@
+SHELL := /bin/sh
+MAKEFILE := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
+MAKEFLAGS += --no-builtin-rules
+
+.SUFFIXES:
+
+.PHONY: default
+default: all
+
+#######################################################################################################################
+# Overridable project defaults
+
+DOBUILD_TOPDIR ?= $(DOBUILDDIR)
+DOBUILD_PROJECTDIR ?= $(patsubst %/,%,$(dir $(MAKEFILE)))
+DOBUILD_DOCKERFILE ?= $(PROJECTDIR)/%ID%.dockerfile
+
+PROJECTDIR = $(DOBUILD_PROJECTDIR)
+DOBUILDDIR ?= $(PROJECTDIR)/../..
+
+include $(DOBUILDDIR)/defaults.mk
+
+#######################################################################################################################
+# Project defaults and macros
+
+DEFAULTTARGET = x86_64-gradle@6.3-linux-java11+builder
+
+#######################################################################################################################
+# Project dependencies
+
+#######################################################################################################################
+# Architecture-specific rule target configuration
+
+GRADLE_TARGETS += $(call target_properties_combine,\
+    ,\
+    x86_64,\
+    gradle,\
+    linux,\
+    java11,\
+    builder,\
+    6.3,\
+    \
+  )
+DOCKER_TARGETS += $(GRADLE_TARGETS)
+
+#######################################################################################################################
+# Common rule target configuration
+
+#######################################################################################################################
+# Makefile dependencies
+
+#######################################################################################################################
+# Rules
+
+include $(DOBUILDDIR)/gradle.mk
+include $(DOBUILDDIR)/docker.mk
+include $(DOBUILDDIR)/standardrules.mk
+

examples/gradle-junit5-example/build.gradle

@@ -0,0 +1,19 @@
+plugins {
+	id 'java'
+	id 'eclipse'
+}
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	testImplementation('org.junit.jupiter:junit-jupiter:5.6.2')
+}
+
+test {
+	useJUnitPlatform()
+	testLogging {
+		events "passed", "skipped", "failed"
+	}
+}

examples/gradle-junit5-example/builder.dockerfile

@@ -0,0 +1,15 @@
+ARG REGISTRY_PREFIX=''
+ARG BUILDER_TAG=0.0.1
+
+ARG HOSTMARCH
+ARG MARCH
+ARG DISTRIB_ID
+ARG DISTRIB_VERSION
+ARG SYS
+ARG ABI
+
+FROM ${REGISTRY_PREFIX}${HOSTMARCH}/${MARCH}/graalvm-ce/20.0.0/${SYS}/${ABI}/${DISTRIB_ID}/${DISTRIB_VERSION}:${BUILDER_TAG}
+
+ARG ID=
+ARG VARIANT=
+ARG PARALLELMFLAGS=

examples/gradle-junit5-example/src/main/java/com/github/nosamad/dobuild/example/Calculator.java

@@ -0,0 +1,9 @@
+package com.github.nosamad.dobuild.example;
+
+public class Calculator {
+
+	public int add(int a, int b) {
+		return a + b;
+	}
+
+}

examples/gradle-junit5-example/src/test/java/com/github/nosamad/dobuild/example/CalculatorTest.java

@@ -0,0 +1,31 @@
+package com.github.nosamad.dobuild.example;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
+
+class CalculatorTests {
+
+	@Test
+	@DisplayName("1 + 1 = 2")
+	void addsTwoNumbers() {
+		Calculator calculator = new Calculator();
+		assertEquals(2, calculator.add(1, 1), "1 + 1 should equal 2");
+	}
+
+	@ParameterizedTest(name = "{0} + {1} = {2}")
+	@CsvSource({
+			"0,    1,   1",
+			"1,    2,   3",
+			"49,  51, 100",
+			"1,  100, 101"
+	})
+	void add(int first, int second, int expectedResult) {
+		Calculator calculator = new Calculator();
+		assertEquals(expectedResult, calculator.add(first, second),
+				() -> first + " + " + second + " should equal " + expectedResult);
+	}
+}

generic.mk

@@ -0,0 +1,406 @@
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+current_makefile := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
+
+# Guard from user inclusion
+ifndef standardrules_include_guard
+  $(error $(current_makefile) is not intended to be included directly - include standardrules.mk instead)
+endif
+
+ifndef generic_include_guard
+generic_include_guard := 1
+
+ifndef defaults_include_guard
+  include $(patsubst %/,%,$(dir $(current_makefile)))/defaults.mk
+endif
+
+#######################################################################################################################
+# Overridable generic defaults
+
+DOBUILD_GENERIC_ADAPTER ?= generic
+
+#######################################################################################################################
+# Overridable generic macros, hooks to customize target default values
+
+# hook called to retrieve the target generic extension directory, may return an empty value
+# $(call dobuild_generic_extdir,target-name)
+dobuild_generic_extdir ?= 
+
+# hook called to retrieve the target generic adapter name, may return an empty value
+# $(call dobuild_generic_adapter,target-name)
+dobuild_generic_adapter ?= 
+
+# hook called to retrieve the target generic prerequisites, may return an empty list in which case the default generic
+# prerequisites are used
+# $(call dobuild_generic_prerequisites,target-name)
+dobuild_generic_prerequisites ?= 
+
+# hook called to retrieve the target generic order only prerequisites, may return an empty list in which case the
+# default generic order only prerequisites are used
+# $(call dobuild_generic_orderonly_prerequisites,target-name)
+dobuild_generic_orderonly_prerequisites ?= 
+
+# hook called to retrieve the target generic perpare step, may return an empty value
+# $(call dobuild_generic_prepare,target-name)
+dobuild_generic_prepare ?= prepare
+
+# hook called to retrieve the target generic assemble step
+# $(call dobuild_generic_assemble,target-name)
+dobuild_generic_assemble ?= assemble
+
+# hook called to retrieve the target generic save artifacts step, may return an empty value
+# $(call dobuild_generic_saveartifacts,target-name)
+dobuild_generic_saveartifacts ?= save-artifacts
+
+# hook called to retrieve the target generic lint step, may return an empty value
+# $(call dobuild_generic_lint,target-name)
+dobuild_generic_lint ?= lint
+
+# hook called to retrieve the target generic check step, may return an empty value
+# $(call dobuild_generic_check,target-name)
+dobuild_generic_check ?= check
+
+# hook called to retrieve the target generic memcheck step, may return an empty value
+# $(call dobuild_generic_memcheck,target-name)
+dobuild_generic_memcheck ?= check-memcheck
+
+# hook called to retrieve the target generic package step, may return an empty value
+# $(call dobuild_generic_package,target-name)
+dobuild_generic_package ?= package
+
+# hook called to retrieve the target generic install step, may return an empty value
+# $(call dobuild_generic_install,target-name)
+dobuild_generic_install ?= package-install
+
+# hook called to retrieve the target generic delegate step
+# $(call dobuild_generic_delegate,target-name)
+dobuild_generic_delegate ?= delegate
+
+# hook called to retrieve the target generic build testing option,
+# may return an empty value in which case BUILD_TESTING is used
+# $(call dobuild_generic_buildtesting,target-name)
+dobuild_generic_buildtesting ?= 
+
+#######################################################################################################################
+# Generic macros
+
+# replaces template values of target field with target properties and resolves result against extension search 
+# directories, returning the first existing resolved path
+# $(call generic_resolve_ext,target-name,field)
+generic_resolve_ext = $(firstword $(call target_subst_and_resolve,$1,$2,$(cache.$1.ext_search_paths)))
+
+# retrieves the target generic default prerequisites
+# $(call generic_default_prerequisites,target-name)
+generic_default_prerequisites = \
+  $(call image_buildtarget,$1) \
+  $(OUTDIR)/$1/DoBuildFiles/generic.properties
+
+# retrieves the target generic default extension directory
+# $(call generic_default_extdir,target-name)
+generic_default_extdir = $(addprefix $(PROJECTDIR)/dobuild-extensions/,$(cache.$1.adapter))
+
+# creates a generic run rule command
+# $(call generic_run_cmd,target-name,command[,args],alternative-command[,output-command])
+generic_run_cmd = $(call run_cmd,$1,$(or $(strip $(notdir $(wildcard $2))),$(strip $4)),$3,$5)
+
+# create a generic perpare command
+# $(call generic_prepare_cmd,target-name)
+generic_prepare_cmd = $(call generic_run_cmd,$1,$(cache.$1.generic_prepare),,true,prepare)
+
+# create a generic assemble command
+# $(call generic_assemble_cmd,target-name)
+generic_assemble_cmd = $(call generic_run_cmd,$1,$(cache.$1.generic_assemble),,$(call dobuild_generic_assemble,$1),assemble)
+
+# create a generic save artifacts command
+# $(call generic_saveartifacts_cmd,target-name)
+generic_saveartifacts_cmd = { $(call generic_run_cmd,$1,$(cache.$1.generic_saveartifacts),,tar -cf - -T /dev/null,save-artifacts) | tar xvf - -C '$(OUTDIR)/$1/DoBuildFiles'; }
+
+# create a generic lint command
+# $(call generic_lint_cmd,target-name)
+generic_lint_cmd = $(call generic_run_cmd,$1,$(cache.$1.generic_lint),,true,lint)
+
+# create a generic check command
+# $(call generic_check_cmd,target-name)
+generic_check_cmd = $(call generic_run_cmd,$1,$(cache.$1.generic_check),,true,check)
+
+# create a generic memcheck command
+# $(call generic_memcheck_cmd,target-name)
+generic_memcheck_cmd = $(call generic_run_cmd,$1,$(cache.$1.generic_memcheck),,true,memcheck)
+
+# create a generic package command
+# $(call generic_package_cmd,target-name)
+generic_package_cmd = $(call generic_run_cmd,$1,$(cache.$1.generic_package),,true,package)
+
+# create a generic install command
+# $(call generic_install_cmd,target-name)
+generic_install_cmd = $(call generic_run_cmd,$1,$(cache.$1.generic_install),$(generic_destdir),true,install)
+
+# create a generic clean command
+# $(call generic_clean_cmd,target-name)
+generic_clean_cmd = rm -rf '$(OUTDIR)/$1'
+
+# create a generic delegate command
+# $(call generic_delegate_cmd,target-name,delegate-target-name)
+generic_delegate_cmd = $(call generic_run_cmd,$1,$(cache.$1.generic_delegate),$2,$(call dobuild_generic_delegate,$1),delegate)
+
+# creates a generic properties generation cmd
+# $(call generic_props_cmd,target-name,input-file)
+generic_props_cmd = sed \
+  -e 's!%TARGET%!$(call escape,$1,!)!g' \
+  -e 's!%DOBUILDDIR%!$(call escape,$(generic_dobuilddir),!)!g' \
+  -e 's!%PROJECTDIR%!$(call escape,$(generic_projectdir),!)!g' \
+  -e 's!%HOSTMARCH%!$(call escape,$(call target_host_arch,$1),!)!g' \
+  -e 's!%MARCH%!$(call escape,$(call target_arch_sub,$1),!)!g' \
+  -e 's!%DISTRIB%!$(call escape,$(call target_distrib,$1),!)!g' \
+  -e 's!%DISTRIB_ID%!$(call escape,$(call target_distrib_id,$1),!)!g' \
+  -e 's!%DISTRIB_VERSION%!$(call escape,$(call target_distrib_version,$1),!)!g' \
+  -e 's!%SYS%!$(call escape,$(call target_sys,$1),!)!g' \
+  -e 's!%ABI%!$(call escape,$(call target_abi,$1),!)!g' \
+  -e 's!%ID%!$(call escape,$(call target_id,$1),!)!g' \
+  -e 's!%VARIANT%!$(call escape,$(call target_variant,$1),!)!g' \
+  -e 's!%BUILD_TESTING%!$(call escape,$(cache.$1.generic_buildtesting),!)!g' \
+  $2
+
+# creates a generic properties generation rule
+# $(call generic_props_rule,target-name)
+generic_props_rule = \
+  $$(OUTDIR)/$1/DoBuildFiles/generic.properties: $$(DOBUILDDIR)/assets/templates/properties.template $$(MAKEFILE_LIST); \
+    $$(SILENT)mkdir -p $$(dir $$@); $$(call generic_props_cmd,$1,$$<) > $$@
+
+# creates a generic prepare rule
+# $(call generic_prepare_rule,target-name)
+generic_prepare_rule = \
+  $$(OUTDIR)/$1/DoBuildFiles/prepare.stage: $$(cache.$1.generic_prepare) $$(cache.$1.generic_prerequisites) | $$(cache.$1.generic_orderonly_prerequisites); \
+    $$(SILENT)$$(call generic_prepare_cmd,$1) && touch $$@
+
+# creates a generic assemble rule
+# $(call generic_assemble_rule,target-name)
+generic_assemble_rule = \
+  build/$1 $$(OUTDIR)/$1/DoBuildFiles/assemble.stage: $$(cache.$1.generic_assemble) $$(OUTDIR)/$1/DoBuildFiles/prepare.stage | $$(OUTDIR)/$1/DoBuildFiles/save-artifacts.stage; \
+    $$(SILENT)$$(call generic_assemble_cmd,$1) && touch $$(OUTDIR)/$1/DoBuildFiles/assemble.stage
+
+# creates a generic save artifacts rule
+# $(call generic_saveartifacts_rule,target-name)
+generic_saveartifacts_rule = \
+  $$(OUTDIR)/$1/DoBuildFiles/save-artifacts.stage: $$(cache.$1.generic_saveartifacts) $$(OUTDIR)/$1/DoBuildFiles/prepare.stage; \
+    $$(SILENT)$$(call generic_saveartifacts_cmd,$1) && touch $$@
+
+# creates a generic lint rule
+# $(call generic_lint_rule,target-name)
+generic_lint_rule = \
+  lint/$1 $$(OUTDIR)/$1/DoBuildFiles/lint.stage: $$(cache.$1.generic_lint) $$(OUTDIR)/$1/DoBuildFiles/assemble.stage; \
+    $$(SILENT)$$(call generic_lint_cmd,$1) && touch $$(OUTDIR)/$1/DoBuildFiles/lint.stage
+
+# creates a generic check rule
+# $(call generic_check_rule,target-name)
+generic_check_rule = \
+  check/$1 $$(OUTDIR)/$1/DoBuildFiles/check.stage: $$(cache.$1.generic_check) $$(OUTDIR)/$1/DoBuildFiles/assemble.stage; \
+    $$(SILENT)$$(call generic_check_cmd,$1) && touch $$(OUTDIR)/$1/DoBuildFiles/check.stage
+
+# creates a generic memcheck rule
+# $(call generic_memcheck_rule,target-name)
+generic_memcheck_rule = \
+  memcheck/$1 $$(OUTDIR)/$1/DoBuildFiles/memcheck.stage: $$(cache.$1.generic_memcheck) $$(OUTDIR)/$1/DoBuildFiles/assemble.stage; \
+    $$(SILENT)$$(call generic_memcheck_cmd,$1) && touch $$(OUTDIR)/$1/DoBuildFiles/memcheck.stage
+
+# creates a generic package rule
+# $(call generic_package_rule,target-name)
+generic_package_rule = \
+  package/$1 $$(OUTDIR)/$1/DoBuildFiles/package.stage: $$(cache.$1.generic_package) $$(OUTDIR)/$1/DoBuildFiles/assemble.stage; \
+    $$(SILENT)$$(call generic_package_cmd,$1) && touch $$(OUTDIR)/$1/DoBuildFiles/package.stage
+
+# creates a generic install rule
+# $(call generic_install_rule,target-name)
+generic_install_rule = \
+  install/$1: $$(wildcard $$(cache.$1.generic_install)) $$(OUTDIR)/$1/DoBuildFiles/assemble.stage; \
+    $$(SILENT)$$(call generic_install_cmd,$1)
+
+# creates a generic clean rule
+# $(call generic_clean_rule,target-name)
+generic_clean_rule = \
+  clean/$1: ; \
+    $$(SILENT)-$$(call generic_clean_cmd,$1)
+
+# creates a generic delegate rule 
+# $(call generic_delegate_rule,adapter,target-name,delegate-target-name)
+generic_delegate_rule = \
+  $1/$2/$3: $$(OUTDIR)/$2/DoBuildFiles/prepare.stage; \
+    $$(SILENT)$$(call generic_delegate_cmd,$2,$3)
+
+# creates a generic delegate pattern rule 
+# $(call generic_delegate_pattern_rule,adapter,target-name)
+generic_delegate_pattern_rule = \
+  $1/$2/%: $$(OUTDIR)/$2/DoBuildFiles/prepare.stage; \
+    $$(SILENT)$$(call generic_delegate_cmd,$2,$$*)
+
+# creates a generic delegate makefile generation command, assuming target is the makefile to create and
+# first prerequisite a file containing the delegate target names
+# $(call generic_delegate_makefile_rule_cmd,target-name)
+generic_delegate_makefile_rule_cmd = \
+  { \
+    echo '$(\\\#) generated file - do not edit!!!'; \
+    echo; \
+    ID='$(call id,$@)'; \
+    echo "ifndef $${ID}_include_guard"; \
+    echo "$${ID}_include_guard := 1"; \
+    echo; \
+    $(foreach target,$(shell cat '$<' 2>/dev/null),\
+      echo '$(call generic_delegate_rule,$$(cache.$1.adapter),$1,$(target))'; \
+      echo; \
+    ) \
+    echo 'endif'; \
+    echo; \
+  } > $@
+
+# creates a generic delegate makefile generation rule 
+# $(call generic_delegate_makefile_rule,target-name)
+generic_delegate_makefile_rule = \
+  $$(OUTDIR)/$1/DoBuildFiles/generic_delegaterules.mk: $$(wildcard $$(OUTDIR)/$1/DoBuildFiles/targets.txt) | $$(OUTDIR)/$1/DoBuildFiles; \
+    $$(SILENT)$$(call generic_delegate_makefile_rule_cmd,$1)
+
+#######################################################################################################################
+# Generic rule target configuration
+
+GENERIC_ADAPTER = $(call memorize,GENERIC_ADAPTER,$(DOBUILD_GENERIC_ADAPTER))
+
+generic_projectdir = $(or $(container_projectdir),$(PROJECTDIR))
+generic_dobuilddir = $(or $(container_dobuilddir),$(DOBUILDIR))
+generic_destdir = $(or $(container_destdir),$(DESTDIR))
+
+generic_defaulttarget = $(if $(SKIP_DEFAULTTARGET),,$(DEFAULTTARGET))
+generic_targets = $(filter $(generic_defaulttarget),$(GENERIC_TARGETS))
+generic_selected_targets = $(if $(SKIP_DEFAULTTARGET),$(GENERIC_TARGETS),$(generic_targets))
+generic_active_targets = $(call memorize,generic_active_targets,$(call target_filter,$(FILTER),$(generic_selected_targets),$(EXCLUDEFILTER)))
+
+generic_prepare_targets = $(addsuffix /DoBuildFiles/prepare.stage,$(addprefix $(OUTDIR)/,$(generic_active_targets)))
+generic_build_targets = $(addprefix build/,$(generic_active_targets))
+generic_clean_targets = $(addprefix clean/,$(generic_active_targets))
+generic_check_targets = $(addprefix check/,$(generic_active_targets))
+generic_memcheck_targets = $(addprefix memcheck/,$(call target_filter,$(MEMCHECKFILTER),$(generic_active_targets),))
+generic_lint_targets = $(addprefix lint/,$(generic_active_targets))
+generic_dist_targets = $(addprefix package/,$(generic_active_targets))
+generic_install_targets = $(addprefix install/,$(generic_active_targets))
+generic_rule_targets = $(addsuffix /genericrules.mk,$(OUTDIR))
+generic_outdirs = $(addprefix $(OUTDIR)/,$(generic_active_targets))
+
+project_targets += $(GENERIC_TARGETS)
+
+PREPARE_TARGETS += $(generic_prepare_targets)
+BUILD_TARGETS += $(generic_build_targets)
+LINT_TARGETS += $(generic_lint_targets)
+CHECK_TARGETS += $(generic_check_targets)
+MEMCHECK_TARGETS += $(generic_memcheck_targets)
+CLEAN_TARGETS += $(generic_clean_targets)
+INSTALL_TARGETS += $(generic_install_targets)
+DIST_TARGETS += $(generic_dist_targets)
+RULE_TARGETS += $(generic_rule_targets)
+TARGETS += $(generic_active_targets)
+OUTDIRS += $(generic_outdirs)
+
+#######################################################################################################################
+# Makefile dependencies
+
+MAKEFILE_DEPS += touch
+MAKEFILE_DEPS += echo
+MAKEFILE_DEPS += sed
+MAKEFILE_DEPS += tar
+
+#######################################################################################################################
+# Generic rules
+
+$(generic_rule_targets):
+	$(SILENT) \
+	{ \
+	  echo '$(\#) generated file - do not edit!!!'; \
+	  echo; \
+	  ID='$(call id,$@)'; \
+	  echo "ifndef $${ID}_include_guard"; \
+	  echo "$${ID}_include_guard := 1"; \
+	  echo; \
+	$(foreach target,$(GENERIC_TARGETS),\
+	  echo '$(\#)$(\#) BEGIN of generic $(target) configuration'; \
+	  echo; \
+	  echo '$(\#)$(\#)$(\#) defaults'; \
+	  echo '$(target) ?= $$(call memorize,$(target),$(call target_properties_parse,$(target)))'; \
+	  echo '$(target).env_path = $$(call env_default_path,$$1)'; \
+	  echo '$(target).adapter = $$(call $$1.generic_adapter,$$1)'; \
+	  echo '$(target).extdir = $$(call $$1.generic_extdir,$$1)'; \
+	  echo '$(target).generic_adapter ?= $$(call dobuild_generic_adapter,$$1)'; \
+	  echo '$(target).generic_extdir ?= $$(call dobuild_generic_extdir,$$1)'; \
+	  echo '$(target).generic_prerequisites ?= $$(call dobuild_generic_prerequisites,$$1)'; \
+	  echo '$(target).generic_orderonly_prerequisites ?= $$(call dobuild_generic_orderonly_prerequisites,$$1)'; \
+	  echo '$(target).generic_prepare ?= $$(call dobuild_generic_prepare,$$1)'; \
+	  echo '$(target).generic_assemble ?= $$(call dobuild_generic_assemble,$$1)'; \
+	  echo '$(target).generic_saveartifacts ?= $$(call dobuild_generic_saveartifacts,$$1)'; \
+	  echo '$(target).generic_lint ?= $$(call dobuild_generic_lint,$$1)'; \
+	  echo '$(target).generic_check ?= $$(call dobuild_generic_check,$$1)'; \
+	  echo '$(target).generic_memcheck ?= $$(call dobuild_generic_memcheck,$$1)'; \
+	  echo '$(target).generic_package ?= $$(call dobuild_generic_package,$$1)'; \
+	  echo '$(target).generic_install ?= $$(call dobuild_generic_install,$$1)'; \
+	  echo '$(target).generic_delegate ?= $$(call dobuild_generic_delegate,$$1)'; \
+	  echo '$(target).generic_buildtesting ?= $$(call dobuild_generic_buildtesting,$$1)'; \
+	  echo; \
+	  echo '$(\#)$(\#)$(\#) cached values'; \
+	  echo 'cache.$(target).ext_search_paths = $$(call memorize,cache.$(target).ext_search_paths,$$(call split_s,$$(call env_host_path,$(target)),:))'; \
+	  echo 'cache.$(target).env_path = $$(call memorize,cache.$(target).env_path,$$(call $(target).env_path,$(target)))'; \
+	  echo 'cache.$(target).adapter = $$(call memorize,cache.$(target).adapter,$$(call target_get_and_subst,$(target),adapter,$(GENERIC_ADAPTER)))'; \
+	  echo 'cache.$(target).extdir = $$(call memorize,cache.$(target).extdir,$$(call target_get_and_subst,$(target),extdir,$$(call generic_default_extdir,$(target))))'; \
+	  echo 'cache.$(target).generic_prerequisites = $$(call memorize,cache.$(target).generic_prerequisites,$$(call target_get_and_subst,$(target),generic_prerequisites,) $$(call generic_default_prerequisites,$(target)))'; \
+	  echo 'cache.$(target).generic_orderonly_prerequisites = $$(call memorize,cache.$(target).generic_orderonly_prerequisites,$$(call target_get_and_subst,$(target),generic_orderonly_prerequisites,))'; \
+	  echo 'cache.$(target).generic_prepare = $$(call memorize,cache.$(target).generic_prepare,$$(call generic_resolve_ext,$(target),generic_prepare))'; \
+	  echo 'cache.$(target).generic_assemble = $$(call memorize,cache.$(target).generic_assemble,$$(call generic_resolve_ext,$(target),generic_assemble))'; \
+	  echo 'cache.$(target).generic_saveartifacts = $$(call memorize,cache.$(target).generic_saveartifacts,$$(call generic_resolve_ext,$(target),generic_saveartifacts))'; \
+	  echo 'cache.$(target).generic_lint = $$(call memorize,cache.$(target).generic_lint,$$(call generic_resolve_ext,$(target),generic_lint))'; \
+	  echo 'cache.$(target).generic_check = $$(call memorize,cache.$(target).generic_check,$$(call generic_resolve_ext,$(target),generic_check))'; \
+	  echo 'cache.$(target).generic_memcheck = $$(call memorize,cache.$(target).generic_memcheck,$$(call generic_resolve_ext,$(target),generic_memcheck))'; \
+	  echo 'cache.$(target).generic_package = $$(call memorize,cache.$(target).generic_package,$$(call generic_resolve_ext,$(target),generic_package))'; \
+	  echo 'cache.$(target).generic_install = $$(call memorize,cache.$(target).generic_install,$$(call generic_resolve_ext,$(target),generic_install))'; \
+	  echo 'cache.$(target).generic_delegate = $$(call memorize,cache.$(target).generic_delegate,$$(call generic_resolve_ext,$(target),generic_delegate))'; \
+	  echo 'cache.$(target).generic_buildtesting = $$(call memorize,cache.$(target).generic_buildtesting,$$(or $$(call $(target).generic_buildtesting,$(target)),$$(BUILD_TESTING)))'; \
+	  echo; \
+	  echo '$(\#)$(\#)$(\#) rules'; \
+	  echo '$(call generic_props_rule,$(target))'; \
+	  echo; \
+	  echo '$(call generic_prepare_rule,$(target))'; \
+	  echo; \
+	  echo '$(call generic_assemble_rule,$(target))'; \
+	  echo; \
+	  echo '$(call generic_saveartifacts_rule,$(target))'; \
+	  echo; \
+	  echo '$(call generic_lint_rule,$(target))'; \
+	  echo; \
+	  echo '$(call generic_check_rule,$(target))'; \
+	  echo; \
+	  echo '$(call generic_memcheck_rule,$(target))'; \
+	  echo; \
+	  echo '$(call generic_package_rule,$(target))'; \
+	  echo; \
+	  echo '$(call generic_install_rule,$(target))'; \
+	  echo; \
+	  echo '$(call generic_clean_rule,$(target))'; \
+	  echo; \
+	  echo '$(call generic_delegate_makefile_rule,$(target))'; \
+	  echo; \
+	  echo '$$(cache.$(target).adapter)/$(target): build/$(target)'; \
+	  echo; \
+	  echo '-include $$(OUTDIR)/$(target)/DoBuildFiles/generic_delegaterules.mk'; \
+	  echo; \
+	  echo '$(call generic_delegate_pattern_rule,$$(cache.$(target).adapter),$(target))'; \
+	  echo; \
+	  echo '$(\#)$(\#) END of generic $(target) configuration'; \
+	  echo; \
+	) \
+	  echo 'endif'; \
+	  echo; \
+	} > $@
+
+endif
+

gradle.mk

@@ -0,0 +1,170 @@
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+ifndef gradle_include_guard
+gradle_include_guard := 1
+
+current_makefile := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
+
+ifndef defaults_include_guard
+  include $(patsubst %/,%,$(dir $(current_makefile)))/defaults.mk
+endif
+
+#######################################################################################################################
+# Overridable Gradle defaults
+
+#######################################################################################################################
+# Overridable gradle macros, hooks to customize target default values
+
+# hook called to retrieve the target gradle extension directory,
+# may return an empty value
+# $(call dobuild_gradle_extdir,target-name)
+dobuild_gradle_extdir ?= $(call dobuild_generic_extdir,$1)
+
+# hook called to retrieve the target gradle adapter name
+# $(call dobuild_gradle_adapter,target-name)
+dobuild_gradle_adapter ?= gradle
+
+# hook called to retrieve the target gradle prerequisites,
+# may return an empty list
+# $(call dobuild_gradle_prerequisites,target-name)
+dobuild_gradle_prerequisites ?= $(call dobuild_generic_prerequisites,$1)
+
+# hook called to retrieve the target gradle order-only prerequisites,
+# may return an empty list
+# $(call dobuild_gradle_orderonly_prerequisites,target-name)
+dobuild_gradle_orderonly_prerequisites ?= $(call dobuild_generic_orderonly_prerequisites,$1)
+
+# hook called to retrieve the target gradle prepare step,
+# may return an empty value
+# $(call dobuild_gradle_prepare,target-name)
+dobuild_gradle_prepare ?= $(call dobuild_generic_prepare,$1)
+
+# hook called to retrieve the target gradle assemble step
+# $(call dobuild_gradle_assemble,target-name)
+dobuild_gradle_assemble ?= $(call dobuild_generic_assemble,$1)
+
+# hook called to retrieve the target gradle save artifacts step,
+# may return an empty value
+# $(call dobuild_gradle_saveartifacts,target-name)
+dobuild_gradle_saveartifacts ?= $(call dobuild_generic_saveartifacts,$1)
+
+# hook called to retrieve the target gradle lint step,
+# may return an empty value
+# $(call dobuild_gradle_lint,target-name)
+dobuild_gradle_lint ?= $(call dobuild_generic_lint,$1)
+
+# hook called to retrieve the target gradle check step,
+# may return an empty value
+# $(call dobuild_gradle_check,target-name)
+dobuild_gradle_check ?= $(call dobuild_generic_check,$1)
+
+# hook called to retrieve the target gradle memcheck step,
+# may return an empty value
+# $(call dobuild_gradle_memcheck,target-name)
+dobuild_gradle_memcheck ?= $(call dobuild_generic_memcheck,$1)
+
+# hook called to retrieve the target gradle package step,
+# may return an empty value
+# $(call dobuild_gradle_package,target-name)
+dobuild_gradle_package ?= $(call dobuild_generic_package,$1)
+
+# hook called to retrieve the target gradle install step,
+# may return an empty value
+# $(call dobuild_gradle_install,target-name)
+dobuild_gradle_install ?= $(call dobuild_generic_install,$1)
+
+# hook called to retrieve the target gradle delegate step
+# $(call dobuild_gradle_delegate,target-name)
+dobuild_gradle_delegate ?= $(call dobuild_generic_delegate,$1)
+
+# hook called to retrieve the target gradle build testing option,
+# may return an empty value in which case BUILD_TESTING is used
+# $(call dobuild_gradle_buildtesting,target-name)
+dobuild_gradle_buildtesting ?= $(call dobuild_generic_buildtesting,$1)
+
+#######################################################################################################################
+# Gradle macros
+
+# retrieves the target generic default prerequisites
+# $(call gradle_default_prerequisites,target-name)
+gradle_default_prerequisites = \
+  $(wildcard $(PROJECTDIR)/*.gradle)
+
+#######################################################################################################################
+# Gradle rule target configuration
+
+gradle_rule_targets = $(addsuffix /gradlerules.mk,$(OUTDIR))
+
+GENERIC_TARGETS += $(GRADLE_TARGETS)
+RULE_TARGETS += $(gradle_rule_targets)
+
+#######################################################################################################################
+# Makefile dependencies
+
+#######################################################################################################################
+# CMake rules
+
+$(gradle_rule_targets):
+	$(SILENT) \
+	{ \
+	  echo '$(\#) generated file - do not edit!!!'; \
+	  echo; \
+	  ID='$(call id,$@)'; \
+	  echo "ifndef $${ID}_include_guard"; \
+	  echo "$${ID}_include_guard := 1"; \
+	  echo; \
+	$(foreach target,$(GRADLE_TARGETS),\
+	  echo '$(\#)$(\#) BEGIN of gradle $(target) configuration'; \
+	  echo; \
+	  echo '$(\#)$(\#)$(\#) defaults'; \
+	  echo '$(target) ?= $$(call memorize,$(target),$(call target_properties_parse,$(target)))'; \
+	  echo '$(target).generic_adapter = $$(call $$1.gradle_adapter,$$1)'; \
+	  echo '$(target).generic_extdir = $$(call $$1.gradle_extdir,$$1)'; \
+	  echo '$(target).generic_prerequisites = $$(call $$1.gradle_prerequisites,$$1) $$(call gradle_default_prerequisites,$$1)'; \
+	  echo '$(target).generic_orderonly_prerequisites ?= $$(call $$1.gradle_orderonly_prerequisites,$$1)'; \
+	  echo '$(target).generic_prepare = $$(call $$1.gradle_prepare,$$1)'; \
+	  echo '$(target).generic_assemble = $$(call $$1.gradle_assemble,$$1)'; \
+	  echo '$(target).generic_saveartifacts = $$(call $$1.gradle_saveartifacts,$$1)'; \
+	  echo '$(target).generic_lint = $$(call $$1.gradle_lint,$$1)'; \
+	  echo '$(target).generic_check = $$(call $$1.gradle_check,$$1)'; \
+	  echo '$(target).generic_memcheck = $$(call $$1.gradle_memcheck,$$1)'; \
+	  echo '$(target).generic_package = $$(call $$1.gradle_package,$$1)'; \
+	  echo '$(target).generic_install = $$(call $$1.gradle_install,$$1)'; \
+	  echo '$(target).generic_delegate = $$(call $$1.gradle_delegate,$$1)'; \
+	  echo '$(target).generic_buildtesting = $$(call $$1.gradle_buildtesting,$$1)'; \
+	  echo '$(target).gradle_adapter ?= $$(call dobuild_gradle_adapter,$$1)'; \
+	  echo '$(target).gradle_extdir ?= $$(call dobuild_gradle_extdir,$$1)'; \
+	  echo '$(target).gradle_prerequisites ?= $$(call dobuild_gradle_prerequisites,$$1)'; \
+	  echo '$(target).gradle_orderonly_prerequisites ?= $$(call dobuild_gradle_orderonly_prerequisites,$$1)'; \
+	  echo '$(target).gradle_prepare ?= $$(call dobuild_gradle_prepare,$$1)'; \
+	  echo '$(target).gradle_assemble ?= $$(call dobuild_gradle_assemble,$$1)'; \
+	  echo '$(target).gradle_saveartifacts ?= $$(call dobuild_gradle_saveartifacts,$$1)'; \
+	  echo '$(target).gradle_lint ?= $$(call dobuild_gradle_lint,$$1)'; \
+	  echo '$(target).gradle_check ?= $$(call dobuild_gradle_check,$$1)'; \
+	  echo '$(target).gradle_memcheck ?= $$(call dobuild_gradle_memcheck,$$1)'; \
+	  echo '$(target).gradle_package ?= $$(call dobuild_gradle_package,$$1)'; \
+	  echo '$(target).gradle_install ?= $$(call dobuild_gradle_install,$$1)'; \
+	  echo '$(target).gradle_delegate ?= $$(call dobuild_gradle_delegate,$$1)'; \
+	  echo '$(target).gradle_buildtesting ?= $$(call dobuild_gradle_buildtesting,$$1)'; \
+	  echo; \
+	  echo '$(\#)$(\#)$(\#) cached values'; \
+	  echo; \
+	  echo '$(\#)$(\#)$(\#) rules'; \
+	  echo; \
+	  echo '$(\#)$(\#) END of gradle $(target) configuration'; \
+	  echo; \
+	) \
+	  echo 'endif'; \
+	  echo; \
+	} > $@
+
+endif
+

run_tests

@@ -0,0 +1,63 @@
+#!/bin/sh
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+set -e
+
+enabled() {
+  { [ "$1" -ne 0 ] || [ "$1" = 'true' ]; } 2>/dev/null
+}
+
+physical_pwd() {
+  pwd -P 2>/dev/null || pwd
+}
+
+try_canonicalize() {
+  readlink -f "$@" 2>/dev/null || realpath "$@"
+}
+
+canonicalize() {
+  if ! try_canonicalize "$1" 2>/dev/null; then
+    echo "$(cd "$(dirname "$1")" && physical_pwd)/$(basename "$1")"
+  fi
+}
+
+scriptdir() {
+  dirname "$(canonicalize "${BASH_SOURCE:-$1}")"
+}
+
+if [ $# -eq 0 ]; then
+  set -- 'bats' 'tests/'
+fi
+
+DOBUILDDIR="${DOBUILDDIR:-"$(scriptdir "$0")"}"
+PATH="${DOBUILDDIR}/bin:$PATH"
+ENABLE_BUILD="${ENABLE_BUILD:-0}"
+PROJECTDIR="${DOBUILD_COMPOSEPROJECTDIR:-"$PWD"}"
+DOBUILD_HOSTCONTAINER="${DOBUILD_HOSTCONTAINER:-"$(get_container_id.sh)"}" || true
+COMPOSEENV_PROJECTPATH="$(canonicalize "${COMPOSEENV_PROJECTPATH:-$PROJECTDIR}")"
+
+export DOBUILDDIR
+export COMPOSEENV_VOLUMESFROM="${COMPOSEENV_VOLUMESFROM:-$DOBUILD_HOSTCONTAINER}"
+export COMPOSEENV_PROJECTPATH
+
+if [ -n "$COMPOSEENV_VOLUMESFROM" ]; then
+  DIND_VOLUME_METHOD='dind-volumes_from.yml'
+else
+  DIND_VOLUME_METHOD='dind-bind_mount.yml'
+fi
+
+set -- -f docker-compose.yml -f "tests/runners/$DIND_VOLUME_METHOD" run --rm check "$@"
+
+if enabled "${ENABLE_BUILD}"; then
+  docker_compose build 0<&- || exit $?
+fi
+
+exec docker_compose "$@"

standardrules.mk

@@ -0,0 +1,148 @@
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+ifndef standardrules_include_guard
+standardrules_include_guard := 1
+
+.PHONY: all
+all:
+
+current_makefile := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
+include $(patsubst %/,%,$(dir $(current_makefile)))/generic.mk
+
+#######################################################################################################################
+# Standard macros
+
+# md5sum command
+# $(call md5sum,file,checksum)
+md5sum = { \
+  if [ -n "$2" ]; then \
+    sed -e 's!%MD5%!$2!g' -e 's!%FILE%!$(call escape,$1,!)!g' $(DOBUILDDIR)/assets/templates/md5sum.txt.template > '$1.md5'; \
+    md5sum -c '$1.md5'; \
+  else \
+    echo 'warning:$1: no md5 skipping verification' 1>&2; \
+  fi; \
+}
+
+# curl command
+# $(call curl,file,url)
+$(SKIP_CURL)curl = { \
+     $(call echo_if_silent_cmd,curl -fSL $(CURLFLAGS) -o '$1' '$2') \
+  && curl -fSL $(CURLFLAGS) -o '$1' '$2' \
+  && $(call md5sum,$1,$3); \
+}
+curl ?= echo 'warning:$1: download skipped (SKIP_CURL=$(SKIP_CURL))'
+
+#######################################################################################################################
+# Makefile dependencies
+
+MAKEFILE_DEPS += rm
+MAKEFILE_DEPS += mkdir
+MAKEFILE_DEPS += cat
+$(SKIP_MD5SUM)MAKEFILE_DEPS += md5sum
+$(SKIP_CURL)MAKEFILE_DEPS += curl
+
+#######################################################################################################################
+# Standard rule target configuration
+
+OUTDIRS := $(sort $(OUTDIRS))
+
+standardrules_unsatisfied_deps = $(call filter_not_found,$(sort $(MAKEFILE_DEPS)))
+standardrules_rule_targets_deps := $(filter-out $(RULE_TARGETS) $(addprefix $(PROJECTDIR),$(RULE_TARGETS)),$(MAKEFILE_LIST))
+
+-include $(RULE_TARGETS)
+
+JOBS = $(call memorize,JOBS,$(words $(or $(sort $(TARGETS)),_)))
+
+# uses golden cut to manage relation between intern and external parallelization (az = phi^z)
+# phi^-3 ~= 0,236, phi^-2 ~= 0,382, phi^-1 ~= 0,618
+EXTERNPARALLEL = $(call memorize,EXTERNPARALLEL,$(call min,$(call bc,((($(JOBSLOTS) - 1) * 382) / 1000) + 1) $(JOBS)))
+INTERNPARALLEL = $(call memorize,INTERNPARALLEL,$(call bc,($(JOBSLOTS) - 1) / $(call max,$(EXTERNPARALLEL) 1) + 1))
+
+ifeq ($(filter 1,$(EXTERNPARALLEL)),)
+  $(SKIP_EXTERNSYNC)GNUMAKEFLAGS += --output-sync
+  MAKEFLAGS += $(addprefix -j,$(EXTERNPARALLEL))
+endif
+
+#######################################################################################################################
+# Standard rule assertions
+
+ASSERTIONS += $(call assert,$(call not,$(standardrules_unsatisfied_deps)),Required commands $(standardrules_unsatisfied_deps) \
+not found; install appropriate packages e.g. docker-ce$(,) busybox and curl)
+
+# evaluate only once, while make restarts because of generated makefiles
+ifeq ($(MAKE_RESTARTS),)
+  ASSERTIONS := $(ASSERTIONS)
+  EXPECTATIONS := $(EXPECTATIONS)
+endif
+
+#######################################################################################################################
+# Shell exports
+
+export DOBUILD_HOSTCONTAINER := $(HOST_CONTAINER)
+export DOBUILD_VERBOSE := $(VERBOSE)
+export DOBUILD_BUILDVERBOSE := $(BUILDVERBOSE)
+export DOBUILD_TESTVERBOSE := $(TESTVERBOSE)
+export DOBUILD_NPROC := $(INTERNPARALLEL)
+export SOURCE_DATE_EPOCH
+export BUILDTIME
+export DOCKER
+export DOCKER_BUILDKIT
+export BUILDKIT_PROGRESS
+
+#######################################################################################################################
+# Standard rules
+
+.PHONY: all
+all: $(BUILD_TARGETS);
+
+.PHONY: check
+check: $(CHECK_TARGETS);
+
+.PHONY: memcheck
+memcheck: $(MEMCHECK_TARGETS);
+
+.PHONY: lint
+lint: $(LINT_TARGETS);
+
+.PHONY: run
+run: $(firstword $(RUN_TARGETS));
+
+.PHONY: clean
+clean: $(CLEAN_TARGETS);
+
+.PHONY: prepare
+prepare: $(PREPARE_TARGETS);
+
+.PHONY: dist
+dist: $(DIST_TARGETS);
+
+.PHONY: distclean
+distclean: $(DISTCLEAN_TARGETS)
+	$(SILENT)-$(if $(strip $(OUTDIRS)),rm -rf $(OUTDIRS))
+
+.PHONY: install
+install: $(INSTALL_TARGETS);
+
+.PHONY: print-targets
+print-targets:
+	$(SILENT)MAKE=$(MAKE) $(DOBUILDDIR)/bin/parse_make_targets.sh $(MFLAGS) $(addprefix -f ,$(MAKEFILE_LIST)) $(MAKEOVERRIDES)
+
+.PHONY: debug-print-%
+debug-print-%:
+	@printf '%s\n' '$*:' 1>&2; \
+	 printf '%s\n' $($*)
+
+$(RULE_TARGETS): $(standardrules_rule_targets_deps) | $(OUTDIRS)
+
+$(OUTDIRS):
+	$(SILENT)mkdir -p $@
+
+endif

tests/10_get_container_id.bats

@@ -0,0 +1,95 @@
+#!/usr/bin/env bats
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+load test_helper
+
+setup() {
+  BINPATH="$(readlink -f "$BATS_TEST_DIRNAME/../bin")"
+  PATH="$BINPATH:$PATH"
+}
+
+print_cgroup_container() {
+  cat <<EOF
+10:perf_event:/
+9:devices:/docker/$1
+8:memory:/docker/$1
+7:cpu,cpuacct:/docker/$1
+6:freezer:/docker/$1
+5:cpuset:/docker/$1
+4:pids:/docker/$1
+3:blkio:/docker/$1
+2:net_cls,net_prio:/docker/$1
+1:name=systemd:/docker/$1
+EOF
+}
+
+print_cgroup_host() {
+  cat <<EOF
+10:perf_event:/
+9:devices:/user.slice
+8:memory:/user.slice
+7:cpu,cpuacct:/user.slice
+6:freezer:/
+5:cpuset:/
+4:pids:/user.slice/user-1000.slice/session-2.scope
+3:blkio:/user.slice
+2:net_cls,net_prio:/
+1:name=systemd:/user.slice/user-1000.slice/session-2.scope
+EOF
+}
+
+@test "get_container_id of known id" {
+  source get_container_id.sh || true
+  
+  container_id_by_object() {
+    return 0
+  }
+  
+  container_id 1234
+}
+
+@test "get_container_id of unknown id" {
+  source get_container_id.sh || true
+  
+  container_id_by_object() {
+    return 3
+  }
+  
+  run container_id 1234
+  echo "$output"
+  [ "$status" -ne 0 ]  
+  [ -z "$output" ]
+}
+
+@test "get_container_id self-id by cgroup" {
+  source get_container_id.sh || true
+  
+  container_id_by_object() {
+    if [ "$1" = '8422b85b7e25dbe4cbc79f4d76392c34b2da4529ef3bc104ad2e097d44859d58' ]; then
+      echo "$1"
+    else
+      return 3
+    fi
+  }
+
+  container_id_by_cgroup < <(print_cgroup_container 8422b85b7e25dbe4cbc79f4d76392c34b2da4529ef3bc104ad2e097d44859d58)
+  
+  run container_id_by_cgroup < <(print_cgroup_container 3a6630ef0bfe2ab9b296d66aef9a29beecf764e03cce61289d08e888f5015cbe)
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [ -z "$output" ]
+  
+  run container_id_by_cgroup < <(print_cgroup_host)
+  echo "$output"
+  [ "$status" -ne 0 ]  
+  [ -z "$output" ]
+}
+

tests/20_is_running_in_bg.bats

@@ -0,0 +1,61 @@
+#!/usr/bin/env bats
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+load test_helper
+
+setup() {
+  BINPATH="$(readlink -f "$BATS_TEST_DIRNAME/../bin")"
+  PATH="$BINPATH:$PATH"
+}
+
+@test "is_running_in_bg has required dep 'ps'" {
+  ps --version
+  echo "ps incompatible"
+  ps -o stat= -p "$$"
+}
+
+@test "is_running_in_bg has required dep 'grep'" {
+  grep --help
+  echo "grep incompatible"
+  echo 'Ss' | grep -vq -e '+$'
+}
+
+@test "is_running_in_bg returns error when ps fails" {
+  ps() {
+    return 1
+  }
+  
+  run source is_running_in_bg.sh 1234
+  echo "$output"
+  [ "$status" -ne 0 ]
+}
+
+@test "is_running_in_bg returns success when running in bg" {
+  ps() {
+    echo 'Ss'
+  }
+  
+  run source is_running_in_bg.sh 1234
+  echo "$output"
+  [ "$status" -eq 0 ]
+  
+  is_running_in_bg.sh &
+}
+
+@test "is_running_in_bg returns error when running in fg" {
+  ps() {
+    echo 'Ss+'
+  }
+  
+  run source is_running_in_bg.sh 1234
+  echo "$output"
+  [ "$status" -ne 0 ]
+}

tests/30_container_run.bats

@@ -0,0 +1,81 @@
+#!/usr/bin/env bats
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+load test_helper
+
+setup() {
+  BINPATH="$(readlink -f "$BATS_TEST_DIRNAME/../bin")"
+  PATH="$BINPATH:$PATH"
+  IMAGE="${REGISTRY_PREFIX}docker:${DOCKER_VERSION}-dind"
+  
+  export IMAGE
+}
+
+@test "container_run has required deps docker" {
+  "$DOCKER" --version
+  echo "docker unreachable!?"
+  echo "DOCKER_HOST=$DOCKER_HOST"
+  "$DOCKER" info
+  echo "docker failed to pull $IMAGE"
+  "$DOCKER" pull "$IMAGE"
+}
+
+@test "container_run run command in a new container" {
+  run container_run "$IMAGE" echo 'Hello world'
+  echo "$output"
+  [ "$status" -eq 0 ]
+  [ "$output" = 'Hello world' ]
+}
+
+@test "container_run docker should be accessible by default" {
+  run container_run "$IMAGE" docker version
+  echo "DOCKER_HOST=$DOCKER_HOST"
+  echo "$output"
+  [ "$status" -eq 0 ]
+}
+
+@test "container_run docker should be inaccessible when DOCKER_HOST is set to empty" {
+  DOCKER_HOST= run container_run "$IMAGE" docker version
+  echo "$output"
+  [ "$status" -ne 0 ]
+}
+
+@test "container_run run command with piped output" {
+  OUTPUT="$(container_run "$IMAGE" echo 'Piped output' | cat)"
+  echo "$OUTPUT"
+  [ "$OUTPUT" = 'Piped output' ]
+}
+
+@test "container_run run command with piped input" {
+  OUTPUT="$(echo 'Piped input' | container_run "$IMAGE" cat)"
+  echo "$OUTPUT"
+  [ "$OUTPUT" = 'Piped input' ]
+}
+
+@test "container_run delegates env vars starting with DOCKER_" {
+  DOCKER_key=value run container_run "$IMAGE" printenv DOCKER_key
+  echo "$output"
+  [ "$status" -eq 0 ]
+  [ "$output" = 'value' ]
+}
+
+@test "container_run doesn't delegate env var TZ" {
+  TZ=UTC run container_run "$IMAGE" printenv TZ
+  [ -z "$output" ]
+}
+
+@test "container_run delegates env var SOURCE_DATE_EPOCH" {
+  SOURCE_DATE_EPOCH=1562027497 run container_run "$IMAGE" printenv SOURCE_DATE_EPOCH
+  echo "$output"
+  [ "$status" -eq 0 ]
+  [ "$output" = '1562027497' ]
+}
+

tests/31_get_container_id.bats

@@ -0,0 +1,52 @@
+#!/usr/bin/env bats
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+load test_helper
+
+build_and_run() {
+  debug_trace "$DOCKER" build --rm --iidfile "$IDDFILE" --file "$DOCKERFILE" \
+    --build-arg "DOCKER_VERSION=$DOCKER_VERSION" \
+    --build-arg "REGISTRY_PREFIX=$REGISTRY_PREFIX" \
+    "$PROJECTPATH" 1>&2
+
+  set -- "$(cat "$IDDFILE")" "$@"
+  
+  debug_trace container_run "$@"
+}
+
+setup() {
+  PROJECTPATH="$(readlink -f "$BATS_TEST_DIRNAME/..")"
+  BINPATH="$PROJECTPATH/bin"
+  PATH="$BINPATH:$PATH"
+  IDDFILE="$(mktemp --tmpdir="$BATS_TMPDIR" idd_XXXXXXXXXX.txt)"
+  DOCKERFILE="$BATS_TEST_DIRNAME/get_container_id.dockerfile"
+  
+  export PROJECTPATH
+  export IDDFILE
+  export DOCKERFILE
+}
+
+teardown() {
+  "$DOCKER" rmi "$(cat "$IDDFILE")"
+  rm -f "$IDDFILE"
+}
+
+@test "get_container_id has required dep docker" {
+  "$DOCKER" --version
+  echo "docker unreachable!?"
+  echo "DOCKER_HOST=$DOCKER_HOST"
+  "$DOCKER" info
+}
+
+@test "get_container_id self-id within container" {
+  ID="$(build_and_run ./get_container_id.sh)"
+  [ -n "$ID" ]
+}

tests/31_shellcheck.bats

@@ -0,0 +1,37 @@
+#!/usr/bin/env bats
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+load test_helper
+
+setup() {
+  PROJECTPATH="$(readlink -f "$BATS_TEST_DIRNAME/..")"
+  BINPATH="$PROJECTPATH/bin"
+  PATH="$BINPATH:$PATH"
+  
+  SHELLCHECK=( shellcheck --color=never --format=gcc -x )
+}
+
+@test "shellcheck has required deps" {
+  "${SHELLCHECK[@]}" --version
+}
+
+@test "shellcheck run_tests" {
+  "${SHELLCHECK[@]}" "$PROJECTPATH/run_tests"
+}
+
+@test "shellcheck helper scripts" {
+  find "$BINPATH" -type f -print0 | parallel --keep-order -0 "${SHELLCHECK[@]}" {}
+}
+
+@test "shellcheck test helper scripts" {
+  find "$BATS_TEST_DIRNAME" -type f -name '*.bash' -print0 | parallel --keep-order -0 "${SHELLCHECK[@]}" {}
+}
+

tests/32_groovy3.bats

@@ -0,0 +1,70 @@
+#!/usr/bin/env bats
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+load test_helper
+
+setup() {
+  PROJECTPATH="$(readlink -f "$BATS_TEST_DIRNAME/..")"
+  BINPATH="$PROJECTPATH/bin"
+  PATH="$BINPATH:$PATH"
+  
+  GROOVY=( groovy3 )
+}
+
+@test "groovy3 has required deps" {
+  "${GROOVY[@]}" --version
+}
+
+print_fixture_ymlslurper() {
+  cat <<- EOF
+	import groovy.yaml.YamlSlurper
+	
+	def configYaml = '''\
+	|---
+	|application: "Sample App"
+	|users:
+	|- name: "mrhaki"
+	|  likes:
+	|  - Groovy
+	|  - Clojure
+	|  - Java
+	|- name: "Hubert"
+	|  likes:
+	|  - Apples
+	|  - Bananas
+	|connections:
+	|- "WS1"
+	|- "WS2"
+	'''
+	
+	// Parse the YAML.
+	def config = new YamlSlurper().parseText(configYaml.stripMargin())
+	 
+	assert config.application == 'Sample App'
+	 
+	assert config.users.size() == 2
+	assert config.users[0] == [name: 'mrhaki', likes: ['Groovy', 'Clojure', 'Java']]
+	assert config.users[1] == [name: 'Hubert', likes: ['Apples', 'Bananas']]
+	 
+	assert config.connections == ['WS1', 'WS2']  
+EOF
+}
+
+@test "groovy3 ymlslurper test" {
+  run "${GROOVY[@]}" -e "$(print_fixture_ymlslurper)"
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [ -z "${lines[@]}" ]
+}
+
+
+

tests/40_parse_make_targets.bats

@@ -0,0 +1,90 @@
+#!/usr/bin/env bats
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+load test_helper
+
+setup() {
+  BINPATH="$(readlink -f "$BATS_TEST_DIRNAME/../bin")"
+  PATH="$BINPATH:$PATH"
+}
+
+@test "parse_make_targets has required dep awk" {
+  awk 'BEGIN {print "Hello from awk"}'
+}
+
+@test "parse_make_targets has required dep grep" {
+  echo 'hello' | grep -e 'hello'
+}
+
+@test "parse_make_targets has required dep sort" {
+  sort --version
+}
+
+@test "parse_make_targets has required dep make" {
+  make --version
+}
+
+print_simple_makefile() {
+  cat <<EOF
+.PHONY: default
+default: all
+.PHONY: all
+all:
+.PHONY: clean
+clean:
+EOF
+}
+
+print_error_makefile() {
+  cat <<EOF
+\$(error within Makefile)
+EOF
+}
+
+@test "parse_make_targets should fail when used with invalid arguments" {
+  run parse_make_targets.sh --unknown-make-option 2>&1
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [ -n "$output" ]
+}
+
+@test "parse_make_targets should fail when makefile contains errors" {
+  run parse_make_targets.sh -f -< <(print_error_makefile)
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [ -n "$output" ]
+}
+
+@test "parse_make_targets should parse simple makefile from stdin" {
+  run parse_make_targets.sh -f -< <(print_simple_makefile)
+  
+  echo "$output"
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = 'all' ]
+  [ "${lines[1]}" = 'clean' ]
+  [ "${lines[2]}" = 'default' ]
+  [ "${#lines[@]}" -eq 3 ]
+}
+
+@test "parse_make_targets should parse a more advanced makefile" {
+  run parse_make_targets.sh -C "$BATS_TEST_DIRNAME/fixtures/make-gtest-example"
+  
+  echo "$output"
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = 'all' ]
+  [ "${lines[1]}" = 'alltests' ]
+  [ "${lines[2]}" = 'clean' ]
+  [ "${#lines[@]}" -eq 3 ]
+}
+
+

tests/40_parse_target_properties.bats

@@ -0,0 +1,230 @@
+#!/usr/bin/env bats
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+load test_helper
+
+setup() {
+  BINPATH="$(readlink -f "$BATS_TEST_DIRNAME/../bin")"
+  PATH="$BINPATH:$PATH"
+  HOST_ARCH="$(uname -m)"
+}
+
+@test "parse_target_properties.sh has required deps" {
+  sed --version
+  paste --version
+  uname --version
+  cat --version
+}
+
+@test "parse_target_properties.sh fails when called without target name" {
+  run parse_target_properties.sh
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [ -n "$output" ]  
+}
+
+@test "parse_target_properties.sh should parse shortest target name" {
+  mapfile -t PROPERTIES < <( parse_target_properties.sh app-id )
+  
+  [ "${PROPERTIES[0]}" = "$HOST_ARCH" ]
+  [ "${PROPERTIES[1]}" = "$HOST_ARCH" ]
+  [ "${PROPERTIES[2]}" = 'unknown' ]
+  [ "${PROPERTIES[3]}" = 'linux' ]
+  [ "${PROPERTIES[4]}" = 'gnu' ]
+  [ "${PROPERTIES[5]}" = 'app-id' ]
+  [ "${PROPERTIES[6]}" = 'latest' ]
+  [ "${PROPERTIES[7]}" = 'release' ]
+}
+
+@test "parse_target_properties.sh should parse host-march and id target name" {
+  mapfile -t PROPERTIES < <( parse_target_properties.sh x86_64+builder-template )
+  
+  [ "${PROPERTIES[0]}" = 'x86_64' ]
+  [ "${PROPERTIES[1]}" = 'x86_64' ]
+  [ "${PROPERTIES[2]}" = 'unknown' ]
+  [ "${PROPERTIES[3]}" = 'linux' ]
+  [ "${PROPERTIES[4]}" = 'gnu' ]
+  [ "${PROPERTIES[5]}" = 'builder-template' ]
+  [ "${PROPERTIES[6]}" = 'latest' ]
+  
+  mapfile -t PROPERTIES < <( parse_target_properties.sh x86_64 builder-template )
+  
+  [ "${PROPERTIES[0]}" = 'x86_64' ]
+  [ "${PROPERTIES[1]}" = 'x86_64' ]
+  [ "${PROPERTIES[2]}" = 'unknown' ]
+  [ "${PROPERTIES[3]}" = 'linux' ]
+  [ "${PROPERTIES[4]}" = 'gnu' ]
+  [ "${PROPERTIES[5]}" = 'builder-template' ]
+  [ "${PROPERTIES[6]}" = 'latest' ]
+}
+
+@test "parse_target_properties.sh should parse longest target name" {
+  mapfile -t PROPERTIES < <( parse_target_properties.sh i386+arm32v7-alpine@3.9-none-eabihf+builder-template )
+  
+  [ "${PROPERTIES[0]}" = 'i386' ]
+  [ "${PROPERTIES[1]}" = 'arm32v7' ]
+  [ "${PROPERTIES[2]}" = 'alpine' ]
+  [ "${PROPERTIES[3]}" = 'none' ]
+  [ "${PROPERTIES[4]}" = 'eabihf' ]
+  [ "${PROPERTIES[5]}" = 'builder-template' ]
+  [ "${PROPERTIES[6]}" = '3.9' ]
+  
+  mapfile -t PROPERTIES < <( parse_target_properties.sh i386 arm32v7-alpine@3.9-none-eabihf builder-template )
+  
+  [ "${PROPERTIES[0]}" = 'i386' ]
+  [ "${PROPERTIES[1]}" = 'arm32v7' ]
+  [ "${PROPERTIES[2]}" = 'alpine' ]
+  [ "${PROPERTIES[3]}" = 'none' ]
+  [ "${PROPERTIES[4]}" = 'eabihf' ]
+  [ "${PROPERTIES[5]}" = 'builder-template' ]
+  [ "${PROPERTIES[6]}" = '3.9' ]
+}
+
+@test "parse_target_properties.sh should parse distribution version containing unescaped special character [@]" {
+  mapfile -t PROPERTIES < <( parse_target_properties.sh i386+arm32v7-alpine@3.9@345+builder-template~@y )
+  
+  [ "${PROPERTIES[0]}" = 'i386' ]
+  [ "${PROPERTIES[1]}" = 'arm32v7' ]
+  [ "${PROPERTIES[2]}" = 'alpine' ]
+  [ "${PROPERTIES[3]}" = 'linux' ]
+  [ "${PROPERTIES[4]}" = 'gnu' ]
+  [ "${PROPERTIES[5]}" = 'builder-template@y' ]
+  [ "${PROPERTIES[6]}" = '3.9@345' ]
+
+  mapfile -t PROPERTIES < <( parse_target_properties.sh i386 arm32v7-alpine@3.9@345 builder-template~@y )
+  
+  [ "${PROPERTIES[0]}" = 'i386' ]
+  [ "${PROPERTIES[1]}" = 'arm32v7' ]
+  [ "${PROPERTIES[2]}" = 'alpine' ]
+  [ "${PROPERTIES[3]}" = 'linux' ]
+  [ "${PROPERTIES[4]}" = 'gnu' ]
+  [ "${PROPERTIES[5]}" = 'builder-template@y' ]
+  [ "${PROPERTIES[6]}" = '3.9@345' ]
+}
+
+@test "parse_target_properties.sh should parse target abi containing unescaped special character [-]" {
+  mapfile -t PROPERTIES < <( parse_target_properties.sh arm32v7-alpine@3.9-linux-gnu-x+builder-template )
+  
+  [ "${PROPERTIES[0]}" = 'arm32v7' ]
+  [ "${PROPERTIES[1]}" = 'arm32v7' ]
+  [ "${PROPERTIES[2]}" = 'alpine' ]
+  [ "${PROPERTIES[3]}" = 'linux' ]
+  [ "${PROPERTIES[4]}" = 'gnu-x' ]
+  [ "${PROPERTIES[5]}" = 'builder-template' ]
+  [ "${PROPERTIES[6]}" = '3.9' ]
+
+  mapfile -t PROPERTIES < <( parse_target_properties.sh arm32v7-alpine@3.9-linux-gnu-x builder-template )
+  
+  [ "${PROPERTIES[0]}" = 'arm32v7' ]
+  [ "${PROPERTIES[1]}" = 'arm32v7' ]
+  [ "${PROPERTIES[2]}" = 'alpine' ]
+  [ "${PROPERTIES[3]}" = 'linux' ]
+  [ "${PROPERTIES[4]}" = 'gnu-x' ]
+  [ "${PROPERTIES[5]}" = 'builder-template' ]
+  [ "${PROPERTIES[6]}" = '3.9' ]
+}
+
+@test "parse_target_properties.sh should parse application id containing unescaped special characters [-]" {
+  mapfile -t PROPERTIES < <( parse_target_properties.sh i386+builder-template@y-z )
+  
+  [ "${PROPERTIES[0]}" = 'i386' ]
+  [ "${PROPERTIES[1]}" = 'i386' ]
+  [ "${PROPERTIES[2]}" = 'unknown' ]
+  [ "${PROPERTIES[3]}" = 'linux' ]
+  [ "${PROPERTIES[4]}" = 'gnu' ]
+  [ "${PROPERTIES[5]}" = 'builder-template' ]
+  [ "${PROPERTIES[6]}" = 'latest' ]
+  [ "${PROPERTIES[7]}" = 'y-z' ]
+  
+  mapfile -t PROPERTIES < <( parse_target_properties.sh i386 builder-template@y-z )
+  
+  [ "${PROPERTIES[0]}" = 'i386' ]
+  [ "${PROPERTIES[1]}" = 'i386' ]
+  [ "${PROPERTIES[2]}" = 'unknown' ]
+  [ "${PROPERTIES[3]}" = 'linux' ]
+  [ "${PROPERTIES[4]}" = 'gnu' ]
+  [ "${PROPERTIES[5]}" = 'builder-template' ]
+  [ "${PROPERTIES[6]}" = 'latest' ]
+  [ "${PROPERTIES[7]}" = 'y-z' ]
+}
+
+@test "parse_target_properties.sh should parse application id containing unescaped special character [+], when host arch is given" {
+  mapfile -t PROPERTIES < <( parse_target_properties.sh + )
+  
+  [ "${PROPERTIES[0]}" = "$HOST_ARCH" ]
+  [ "${PROPERTIES[1]}" = "$HOST_ARCH" ]
+  [ "${PROPERTIES[2]}" = 'unknown' ]
+  [ "${PROPERTIES[3]}" = 'linux' ]
+  [ "${PROPERTIES[4]}" = 'gnu' ]
+  [ "${PROPERTIES[5]}" = '+' ]
+  [ "${PROPERTIES[6]}" = 'latest' ]
+
+  mapfile -t PROPERTIES < <( parse_target_properties.sh i386+arm32v7+builder-template@x+y-z )
+  
+  [ "${PROPERTIES[0]}" = 'i386' ]
+  [ "${PROPERTIES[1]}" = 'arm32v7' ]
+  [ "${PROPERTIES[2]}" = 'unknown' ]
+  [ "${PROPERTIES[3]}" = 'linux' ]
+  [ "${PROPERTIES[4]}" = 'gnu' ]
+  [ "${PROPERTIES[5]}" = 'builder-template' ]
+  [ "${PROPERTIES[6]}" = 'latest' ]
+  [ "${PROPERTIES[7]}" = 'x+y-z' ]
+
+  mapfile -t PROPERTIES < <( parse_target_properties.sh i386 arm32v7 builder-template@x y-z )
+  
+  [ "${PROPERTIES[0]}" = 'i386' ]
+  [ "${PROPERTIES[1]}" = 'arm32v7' ]
+  [ "${PROPERTIES[2]}" = 'unknown' ]
+  [ "${PROPERTIES[3]}" = 'linux' ]
+  [ "${PROPERTIES[4]}" = 'gnu' ]
+  [ "${PROPERTIES[5]}" = 'builder-template' ]
+  [ "${PROPERTIES[6]}" = 'latest' ]
+  [ "${PROPERTIES[7]}" = 'x+y-z' ]
+}
+
+@test "parse_target_properties.sh should parse escaped chars [+|\\s] in target name" {
+  mapfile -t PROPERTIES < <( parse_target_properties.sh 'x86~+arm32~ ~~-x-alpine~+app' )
+  
+  [ "${PROPERTIES[0]}" = "$HOST_ARCH" ]
+  [ "${PROPERTIES[1]}" = "$HOST_ARCH" ]
+  [ "${PROPERTIES[2]}" = 'unknown' ]
+  [ "${PROPERTIES[3]}" = 'linux' ]
+  [ "${PROPERTIES[4]}" = 'gnu' ]
+  [ "${PROPERTIES[5]}" = 'x86+arm32 ~-x-alpine+app' ]
+  [ "${PROPERTIES[6]}" = 'latest' ]
+}
+
+@test "parse_target_properties.sh should parse escaped char [@] in target name" {
+  mapfile -t PROPERTIES < <( parse_target_properties.sh arm32v7-alpine~@3.9-linux-gnu-x+builder-template )
+
+  [ "${PROPERTIES[0]}" = 'arm32v7' ]
+  [ "${PROPERTIES[1]}" = 'arm32v7' ]
+  [ "${PROPERTIES[2]}" = 'alpine@3.9' ]
+  [ "${PROPERTIES[3]}" = 'linux' ]
+  [ "${PROPERTIES[4]}" = 'gnu-x' ]
+  [ "${PROPERTIES[5]}" = 'builder-template' ]
+  [ "${PROPERTIES[6]}" = 'latest' ]
+}
+
+@test "parse_target_properties.sh should parse escaped char [-] in target name" {
+  mapfile -t PROPERTIES < <( parse_target_properties.sh arm32v7-linaro~-gcc-none-eabihf+builder-template )
+
+  [ "${PROPERTIES[0]}" = 'arm32v7' ]
+  [ "${PROPERTIES[1]}" = 'arm32v7' ]
+  [ "${PROPERTIES[2]}" = 'linaro-gcc' ]
+  [ "${PROPERTIES[3]}" = 'none' ]
+  [ "${PROPERTIES[4]}" = 'eabihf' ]
+  [ "${PROPERTIES[5]}" = 'builder-template' ]
+  [ "${PROPERTIES[6]}" = 'latest' ]
+  
+}
+

tests/41_dobuild_opts.bats

@@ -0,0 +1,310 @@
+#!/usr/bin/env bats
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+load test_helper
+
+setup() {
+  BINPATH="$(readlink -f "$BATS_TEST_DIRNAME/../bin")"
+  PATH="$BINPATH:$PATH"
+  TEMP="$(mktemp --directory --tmpdir="$BATS_TMPDIR" dobuild_XXXXXXXXXX)"
+}
+
+teardown() {
+  rm -rf "$TEMP"
+}
+
+@test "dobuild has required dep find" {
+  find --version
+}
+
+@test "dobuild has required dep dirname" {
+  dirname --version
+}
+
+@test "dobuild has required dep mkdir" {
+  mkdir --version
+}
+
+@test "dobuild has required dep grep" {
+  grep --version
+}
+
+@test "dobuild has required dep sed" {
+  sed --version
+}
+
+@test "dobuild should fail when -f, --file or --makefile argument is empty" {
+  export MAKE='echo'
+  
+  run dobuild -f 2>&1
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [[ "$output" =~ '"-f" requires a non-empty option argument' ]]
+  
+  run dobuild --file 2>&1
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [[ "$output" =~ '"--file" requires a non-empty option argument' ]]
+
+  run dobuild --file= 2>&1
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [[ "$output" =~ '"--file=" requires a non-empty option argument' ]]
+  
+  run dobuild --makefile 2>&1
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [[ "$output" =~ '"--makefile" requires a non-empty option argument' ]]
+  
+  run dobuild --makefile= 2>&1
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [[ "$output" =~ '"--makefile=" requires a non-empty option argument' ]]
+}
+
+@test "dobuild should pass -f, --file or --makefile argument to make" {
+  export MAKE='echo'
+  
+  run dobuild -f Makefile
+  
+  echo "$output"
+  [ "$status" -eq 0 ]
+  [[ "$output" =~ '-f Makefile' ]]
+  
+  run dobuild --file Makefile
+  
+  echo "$output"
+  [ "$status" -eq 0 ]
+  [[ "$output" =~ '--file Makefile' ]]
+  
+  run dobuild --file=Makefile
+  
+  echo "$output"
+  [ "$status" -eq 0 ]
+  [[ "$output" =~ '--file=Makefile' ]]
+}
+
+@test "dobuild should pass all -f, --file or --makefile arguments to make and use first to determine project kind" {
+  export MAKE='echo'
+  
+  run dobuild -f Makefile -f other.mk
+  
+  echo "$output"
+  [ "$status" -eq 0 ]
+  [[ "$output" =~ '-f Makefile -f other.mk' ]]
+}
+
+@test "dobuild should fail when -C, --directory argument is empty" {
+  export MAKE='echo'
+  
+  run dobuild -C 2>&1
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [[ "$output" =~ '"-C" requires a non-empty option argument' ]]
+  
+  run dobuild --directory 2>&1
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [[ "$output" =~ '"--directory" requires a non-empty option argument' ]]
+
+  run dobuild --directory= 2>&1
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [[ "$output" =~ '"--directory=" requires a non-empty option argument' ]]
+}
+
+@test "dobuild should not pass -C, --directory arguments to make" {
+  export MAKE='echo'
+  
+  run dobuild -C "$TEMP" -f Makefile
+  
+  echo "$output"
+  [ "$status" -eq 0 ]
+  [[ ! "$output" =~ "-C $TEMP" ]]
+  
+  run dobuild --directory "$TEMP" -f Makefile
+  
+  echo "$output"
+  [ "$status" -eq 0 ]
+  [[ ! "$output" =~ "--directory $TEMP" ]]
+  
+  run dobuild --directory="$TEMP" -f Makefile
+  
+  echo "$output"
+  [ "$status" -eq 0 ]
+  [[ ! "$output" =~ "--directory=$TEMP" ]]
+}
+
+@test "dobuild should fail when directory denoted by -C, --directory does not exist" {
+  export MAKE='echo'
+  
+  run dobuild -C non-existent -f Makefile 2>&1
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [[ "$output" =~ "can't cd to non-existent" ]]
+  
+  run dobuild --directory non-existent -f Makefile 2>&1
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [[ "$output" =~ "can't cd to non-existent" ]]
+  
+  run dobuild --directory=non-existent -f Makefile 2>&1
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [[ "$output" =~ "can't cd to non-existent" ]]
+}
+
+@test "dobuild should fail when --image argument is empty" {
+  export MAKE='echo'
+  
+  run dobuild --image 2>&1
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [[ "$output" =~ '"--image" requires a non-empty option argument' ]]
+
+  run dobuild --image= 2>&1
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [[ "$output" =~ '"--image=" requires a non-empty option argument' ]]
+}
+
+@test "dobuild should print warning when --dockerfile argument is empty and fail while project kind is unknown" {
+  export MAKE='echo'
+  
+  run dobuild -C "$TEMP" --dockerfile 2>&1
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [[ "$output" =~ 'warning: "--dockerfile" ignored, requires a non-empty option argument' ]]
+  [[ "$output" =~ 'error: unknown project kind' ]]
+
+  run dobuild -C "$TEMP" --dockerfile= 2>&1
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [[ "$output" =~ 'warning: "--dockerfile=" ignored, requires a non-empty option argument' ]]
+  [[ "$output" =~ 'error: unknown project kind' ]]
+}
+
+@test "dobuild should pass --dockerfile argument to make as DOCKERFILE variable" {
+  export MAKE='echo'
+  
+  run dobuild -f Makefile --dockerfile=Dockerfile
+  
+  echo "$output"
+  [ "$status" -eq 0 ]
+  [[ "$output" =~ 'DOCKERFILE=Dockerfile' ]]
+}
+
+@test "dobuild should try to find dockerfile by FILTER in project by default and fails while no exact match can be found" {
+  export MAKE='echo'
+  
+  touch "$TEMP/Dockerfile"
+  touch "$TEMP/arm32v7-alpine-x.dockerfile"
+  touch "$TEMP/x86_64-alpine-x.dockerfile"
+  
+  run dobuild -C "$TEMP" -f Makefile 2>&1
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [[ "$output" =~ 'more than one match found for *.dockerfile in . using filter [^-]*-[^.]*' ]]
+}
+
+@test "dobuild should find exact match for dockerfile using MARCH and DISTRIB" {
+  export MAKE='echo'
+  
+  touch "$TEMP/Dockerfile"
+  touch "$TEMP/arm32v7-alpine-x.dockerfile"
+  touch "$TEMP/x86_64-alpine-x.dockerfile"
+  touch "$TEMP/arm32v7-ubuntu-x.dockerfile"
+  touch "$TEMP/x86_64-ubuntu-x.dockerfile"
+  
+  run dobuild -C "$TEMP" -f Makefile MARCH=arm32v7 DISTRIB=ubuntu 2>&1
+  
+  echo "$output"
+  [ "$status" -eq 0 ]
+  [[ "$output" =~ 'DOCKERFILE=./arm32v7-ubuntu-x.dockerfile' ]]
+  
+  run dobuild -C "$TEMP" -f Makefile MARCH=arm32v7 DISTRIB=alpine 2>&1
+  
+  echo "$output"
+  [ "$status" -eq 0 ]
+  [[ "$output" =~ 'DOCKERFILE=./arm32v7-alpine-x.dockerfile' ]]
+}
+
+@test "dobuild should find exact match for dockerfile using FILTER" {
+  export MAKE='echo'
+  
+  touch "$TEMP/Dockerfile"
+  touch "$TEMP/arm32v7-alpine-x.dockerfile"
+  touch "$TEMP/x86_64-alpine-x.dockerfile"
+  touch "$TEMP/arm32v7-ubuntu-x.dockerfile"
+  touch "$TEMP/x86_64-ubuntu-x.dockerfile"
+  
+  run dobuild -C "$TEMP" -f Makefile --filter 'arm.\?.\?v7-alpine-x' 2>&1
+  
+  echo "$output"
+  [ "$status" -eq 0 ]
+  [[ "$output" =~ 'DOCKERFILE=./arm32v7-alpine-x.dockerfile' ]]
+  [[ "$output" =~ 'FILTER=arm.\?.\?v7-alpine-x' ]]
+  
+  run dobuild -C "$TEMP" -f Makefile 'FILTER=arm.\?.\?v7-alpine-x' 2>&1
+  
+  echo "$output"
+  [ "$status" -eq 0 ]
+  [[ "$output" =~ 'DOCKERFILE=./arm32v7-alpine-x.dockerfile' ]]
+  [[ "$output" =~ 'FILTER=arm.\?.\?v7-alpine-x' ]]
+}
+
+@test "dobuild should fallback to Dockerfile in project by default" {
+  export MAKE='echo'
+  
+  touch "$TEMP/Dockerfile"
+  
+  run dobuild -C "$TEMP" -f Makefile
+  
+  echo "$output"
+  [ "$status" -eq 0 ]
+  [[ "$output" =~ "DOCKERFILE=./Dockerfile" ]]
+}
+
+@test "dobuild should print warning when --filter argument is empty and fail while project kind is unknown" {
+  export MAKE='echo'
+  
+  run dobuild -C "$TEMP" --filter 2>&1
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [[ "$output" =~ 'warning: "--filter" ignored, requires a non-empty option argument' ]]
+  [[ "$output" =~ 'error: unknown project kind' ]]
+  
+  run dobuild -C "$TEMP" --filter= 2>&1
+  
+  echo "$output"
+  [ "$status" -ne 0 ]
+  [[ "$output" =~ 'warning: "--filter=" ignored, requires a non-empty option argument' ]]
+  [[ "$output" =~ 'error: unknown project kind' ]]
+}
+
+

tests/50_defaults_mk.bats

@@ -0,0 +1,554 @@
+#!/usr/bin/env bats
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+load test_helper
+
+setup() {
+  PROJECTPATH="$(readlink -f "$BATS_TEST_DIRNAME/..")"
+  MAKE=("make" --no-print-directory -C "$PROJECTPATH" -f defaults.mk -f "$BATS_TEST_DIRNAME/test_helper.mk")
+  VERSIONFILE="$(mktemp --tmpdir="$BATS_TMPDIR" version_XXXXXXXXXX.txt)"
+  
+  export DOBUILD_PROJECTVERSIONFILE="$VERSIONFILE"
+}
+
+teardown() {
+  rm -f "$VERSIONFILE"
+}
+
+@test "defaults_mk has required deps" {
+  "${MAKE[@]}" --version
+}
+
+@test "defaults_mk has required makefile deps" {
+  "${MAKE[@]}" testhelper-print-MAKEFILE_DEPS | sort -u | parallel --keep-order command -V
+}
+
+@test "defaults_mk can be included multiple times" {
+  run "${MAKE[@]}" -f defaults.mk 2>&1
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ "${lines[@]}" =~ 'make: Nothing to be done' ]]
+}
+
+print_fixture_or() {
+  cat <<EOF
+VALUES += 1_\$(call or,)
+VALUES += 2_\$(call or,a,b)
+VALUES += 3_\$(call or,,,,b)
+EOF
+}
+
+@test "defaults_mk test function or" {
+  run eval 'print_fixture_or | "${MAKE[@]}" -f - testhelper-print-VALUES'
+
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = "1_" ]
+  [ "${lines[1]}" = "2_a" ]
+  [ "${lines[2]}" = "3_b" ]
+  [ "${#lines[@]}" -eq 3 ]
+}
+
+print_fixture_lastword() {
+  cat <<EOF
+VALUES += 1_\$(call lastword,)
+VALUES += 2_\$(call lastword,0 1)
+VALUES += 3_\$(call lastword,1 2 3)
+EOF
+}
+
+@test "defaults_mk test function lastword" {
+  run eval 'print_fixture_lastword | "${MAKE[@]}" -f - testhelper-print-VALUES'
+
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = "1_" ]
+  [ "${lines[1]}" = "2_1" ]
+  [ "${lines[2]}" = "3_3" ]
+  [ "${#lines[@]}" -eq 3 ]
+}
+
+print_fixture_eq_s() {
+  cat <<EOF
+VALUES += 1_\$(call eq_s,1,1)
+VALUES += 2_\$(call eq_s,1,2)
+VALUES += 3_\$(call eq_s,text,text)
+VALUES += 4_\$(call eq_s,text,other)
+EOF
+}
+
+@test "defaults_mk test function eq_s" {
+  run eval 'print_fixture_eq_s | "${MAKE[@]}" -f - testhelper-print-VALUES'
+
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = "1_1" ]
+  [ "${lines[1]}" = "2_" ]
+  [ "${lines[2]}" = "3_text" ]
+  [ "${lines[3]}" = "4_" ]
+  [ "${#lines[@]}" -eq 4 ]
+}
+
+print_fixture_tail() {
+  cat <<EOF
+VALUES += 1_\$(call tail,)
+VALUES += 2_\$(call tail,1)
+VALUES += 3_\$(call tail,1 42)
+EOF
+}
+
+@test "defaults_mk test function tail" {
+  run eval 'print_fixture_tail | "${MAKE[@]}" -f - testhelper-print-VALUES'
+
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = "1_" ]
+  [ "${lines[1]}" = "2_" ]
+  [ "${lines[2]}" = "3_42" ]
+  [ "${#lines[@]}" -eq 3 ]
+}
+
+print_fixture_eq_each() {
+  cat <<EOF
+VALUES += 1_\$(call eq_each,1,1,eq_s)
+VALUES += 2_\$(call eq_each,1,2,eq_s)
+VALUES += 3_\$(call eq_each,text,text,eq_s)
+VALUES += 4_\$(call eq_each,text,other,eq_s)
+VALUES += 5_\$(call eq_each,a b,a b,eq_s)
+VALUES += 6_\$(call eq_each,a b,a c,eq_s)
+VALUES += 7_\$(call eq_each,a b,a,eq_s)
+EOF
+}
+
+@test "defaults_mk test function eq_each" {
+  run eval 'print_fixture_eq_each | "${MAKE[@]}" -f - testhelper-print-VALUES'
+
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = "1_1" ]
+  [ "${lines[1]}" = "2_" ]
+  [ "${lines[2]}" = "3_1" ]
+  [ "${lines[3]}" = "4_" ]
+  [ "${lines[4]}" = "5_1" ]
+  [ "${lines[5]}" = "6_" ]
+  [ "${lines[6]}" = "7_" ]
+  [ "${#lines[@]}" -eq 7 ]
+}
+
+print_fixture_eq() {
+  cat <<EOF
+VALUES += 1_\$(call eq,1,1,eq_s)
+VALUES += 2_\$(call eq,1,2)
+VALUES += 3_\$(call eq,text,text)
+VALUES += 4_\$(call eq,text,other)
+VALUES += 5_\$(call eq,a b,a b)
+VALUES += 6_\$(call eq,a b,a c)
+VALUES += 7_\$(call eq,a b,a)
+EOF
+}
+
+@test "defaults_mk test function eq" {
+  run eval 'print_fixture_eq | "${MAKE[@]}" -f - testhelper-print-VALUES'
+
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = "1_1" ]
+  [ "${lines[1]}" = "2_" ]
+  [ "${lines[2]}" = "3_1" ]
+  [ "${lines[3]}" = "4_" ]
+  [ "${lines[4]}" = "5_1" ]
+  [ "${lines[5]}" = "6_" ]
+  [ "${lines[6]}" = "7_" ]
+  [ "${#lines[@]}" -eq 7 ]
+}
+
+print_fixture_target_properties_matches() {
+  cat <<EOF
+VALUES += 1_\$(call target_properties_matches,1,1)
+VALUES += 2_\$(call target_properties_matches,1,2)
+VALUES += 3_\$(call target_properties_matches,text,text)
+VALUES += 4_\$(call target_properties_matches,text,other)
+VALUES += 5_\$(call target_properties_matches,%,text)
+VALUES += 6_\$(call target_properties_matches,text,%)
+VALUES += 7_\$(call target_properties_matches,a % c,a b c)
+VALUES += 8_\$(call target_properties_matches,a d %,a b c)
+VALUES += 9_\$(call target_properties_matches,a d,a d c)
+EOF
+}
+
+@test "defaults_mk test function target_properties_matches" {
+  run eval 'print_fixture_target_properties_matches | "${MAKE[@]}" -f - testhelper-print-VALUES'
+
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = "1_1" ]
+  [ "${lines[1]}" = "2_" ]
+  [ "${lines[2]}" = "3_1" ]
+  [ "${lines[3]}" = "4_" ]
+  [ "${lines[4]}" = "5_1" ]
+  [ "${lines[5]}" = "6_" ]
+  [ "${lines[6]}" = "7_1" ]
+  [ "${lines[7]}" = "8_" ]
+  [ "${lines[8]}" = "9_" ]
+  [ "${#lines[@]}" -eq 9 ]
+}
+
+print_fixture_target_matches() {
+  cat <<EOF
+VALUES += 1_\$(call target_matches,x86_64+builder-template,x86_64 x86_64 unknown linux gnu builder-template latest release)
+VALUES += 2_\$(call target_matches,i386+arm32v7-alpine@3.9-none-eabihf+builder-template,i386 arm32v7 alpine none eabihf builder-template 3.9 release)
+VALUES += 3_\$(call target_matches,arm32v7-alpine@3.9-none-eabihf+builder-template,arm32v7 arm32v7 alpine % % % % %)
+VALUES += 4_\$(call target_matches,arm32v7-alpine@3.9-none-eabihf+builder-template,% arm32v7 alpine % % % % %)
+VALUES += 5_\$(call target_matches,i386+arm32v7-alpine@3.9-none-eabihf+builder-template,i386 arm32v7 ubuntu % % % % %)
+VALUES += 6_\$(call target_matches,i386+arm32v7-alpine@3.9-none-eabihf+builder-template@debug,i386 arm32v7 alpine % % % % debug)
+EOF
+}
+
+@test "defaults_mk test function target_matches" {
+  run eval 'print_fixture_target_matches | "${MAKE[@]}" -f - testhelper-print-VALUES'
+
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = "1_1" ]
+  [ "${lines[1]}" = "2_1" ]
+  [ "${lines[2]}" = "3_1" ]
+  [ "${lines[3]}" = "4_1" ]
+  [ "${lines[4]}" = "5_" ]
+  [ "${lines[5]}" = "6_1" ]
+  [ "${#lines[@]}" -eq 6 ]
+}
+
+print_fixture_target_filter() {
+  cat <<EOF
+VALUES += 1_\$(call target_filter,x86_64+x86_64-unknown@latest-linux-gnu+builder-template,x86_64+builder-template)
+VALUES += 2_\$(call target_filter,i386+arm32v7-alpine@3.9-none-eabihf+builder-template,i386+arm32v7-alpine@3.9-none-eabihf+builder-template)
+VALUES += 3_\$(call target_filter,arm32v7+arm32v7-alpine@%-%-%+%,arm32v7-alpine@3.9-none-eabihf+builder-template)
+VALUES += 4_\$(call target_filter,%+arm32v7-alpine@%-%-%+%,arm32v7-alpine@3.9-none-eabihf+builder-template)
+VALUES += 5_\$(call target_filter,i386+arm32v7-ubuntu@%-%-%+%,i386+arm32v7-alpine@3.9-none-eabihf+builder-template)
+EOF
+}
+
+@test "defaults_mk test function target_filter" {
+  run eval 'print_fixture_target_filter | "${MAKE[@]}" -f - testhelper-print-VALUES'
+
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = "1_x86_64+builder-template" ]
+  [ "${lines[1]}" = "2_i386+arm32v7-alpine@3.9-none-eabihf+builder-template" ]
+  [ "${lines[2]}" = "3_arm32v7-alpine@3.9-none-eabihf+builder-template" ]
+  [ "${lines[3]}" = "4_arm32v7-alpine@3.9-none-eabihf+builder-template" ]
+  [ "${lines[4]}" = "5_" ]
+  [ "${#lines[@]}" -eq 5 ]
+}
+
+
+print_fixture_compare() {
+  cat <<EOF
+VALUES += 1_\$(call compare, 1, 2)
+VALUES += 2_\$(call compare,-1,-2)
+VALUES += 3_\$(call compare, 1, 1)
+VALUES += 4_\$(call compare,-1, 2)
+EOF
+}
+
+@test "defaults_mk test function compare" {
+  run eval 'print_fixture_compare | "${MAKE[@]}" -f - testhelper-print-VALUES'
+
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = "1_-1" ]
+  [ "${lines[1]}" = "2_1" ]
+  [ "${lines[2]}" = "3_0" ]
+  [ "${lines[3]}" = "4_-3" ]
+  [ "${#lines[@]}" -eq 4 ]
+}
+
+print_fixture_lt() {
+  cat <<EOF
+VALUES += 1_\$(call lt, 1, 2)
+VALUES += 2_\$(call lt,-1,-2)
+VALUES += 3_\$(call lt, 1, 1)
+VALUES += 4_\$(call lt,-1, 2)
+VALUES += 5_\$(call lt, 4, 2)
+EOF
+}
+
+@test "defaults_mk test function lt" {
+  run eval 'print_fixture_lt | "${MAKE[@]}" -f - testhelper-print-VALUES'
+
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = "1_1" ]
+  [ "${lines[1]}" = "2_" ]
+  [ "${lines[2]}" = "3_" ]
+  [ "${lines[3]}" = "4_1" ]
+  [ "${lines[4]}" = "5_" ]
+  [ "${#lines[@]}" -eq 5 ]
+}
+
+print_fixture_gt() {
+  cat <<EOF
+VALUES += 1_\$(call gt, 1, 2)
+VALUES += 2_\$(call gt,-1,-2)
+VALUES += 3_\$(call gt, 1, 1)
+VALUES += 4_\$(call gt,-1, 2)
+VALUES += 5_\$(call gt, 4, 2)
+EOF
+}
+
+@test "defaults_mk test function gt" {
+  run eval 'print_fixture_gt | "${MAKE[@]}" -f - testhelper-print-VALUES'
+
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = "1_" ]
+  [ "${lines[1]}" = "2_1" ]
+  [ "${lines[2]}" = "3_" ]
+  [ "${lines[3]}" = "4_" ]
+  [ "${lines[4]}" = "5_1" ]
+  [ "${#lines[@]}" -eq 5 ]
+}
+
+print_fixture_ge() {
+  cat <<EOF
+VALUES += 1_\$(call ge, 1, 2)
+VALUES += 2_\$(call ge,-1,-2)
+VALUES += 3_\$(call ge, 1, 1)
+VALUES += 4_\$(call ge,-1, 2)
+VALUES += 5_\$(call ge, 4, 2)
+EOF
+}
+
+@test "defaults_mk test function ge" {
+  run eval 'print_fixture_ge | "${MAKE[@]}" -f - testhelper-print-VALUES'
+
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = "1_" ]
+  [ "${lines[1]}" = "2_1" ]
+  [ "${lines[2]}" = "3_1" ]
+  [ "${lines[3]}" = "4_" ]
+  [ "${lines[4]}" = "5_1" ]
+  [ "${#lines[@]}" -eq 5 ]
+}
+
+print_fixture_ge_version() {
+  cat <<EOF
+VALUES += 1_\$(call ge_version, 3, 1)
+VALUES += 2_\$(call ge_version, 1, 2)
+VALUES += 3_\$(call ge_version, 1, 1)
+VALUES += 4_\$(call ge_version, 1 1, 2 0)
+VALUES += 5_\$(call ge_version, 1 2, 1 0)
+VALUES += 6_\$(call ge_version, 1 1, 1 2)
+VALUES += 7_\$(call ge_version, 1 1, 2 3)
+VALUES += 8_\$(call ge_version, 1 1, 1)
+VALUES += 9_\$(call ge_version, 1 1 1, 1)
+VALUES += 10_\$(call ge_version, 1, 1 1 1)
+VALUES += 11_\$(call ge_version, 1 2, 1 1 1)
+VALUES += 12_\$(call ge_version, 1 2 1, 1 2 0)
+VALUES += 13_\$(call ge_version, , 1)
+VALUES += 14_\$(call ge_version, 2, )
+VALUES += 15_\$(call ge_version, , )
+EOF
+}
+
+@test "defaults_mk test function ge_version" {
+  run eval 'print_fixture_ge_version | "${MAKE[@]}" -f - testhelper-print-VALUES'
+
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = "1_1" ]
+  [ "${lines[1]}" = "2_" ]
+  [ "${lines[2]}" = "3_1" ]
+  [ "${lines[3]}" = "4_" ]
+  [ "${lines[4]}" = "5_1" ]
+  [ "${lines[5]}" = "6_" ]
+  [ "${lines[6]}" = "7_" ]
+  [ "${lines[7]}" = "8_1" ]
+  [ "${lines[8]}" = "9_1" ]
+  [ "${lines[9]}" = "10_" ]
+  [ "${lines[10]}" = "11_1" ]
+  [ "${lines[11]}" = "12_1" ]
+  [ "${lines[12]}" = "13_" ]
+  [ "${lines[13]}" = "14_1" ]
+  [ "${lines[14]}" = "15_1" ]
+  [ "${#lines[@]}" -eq 15 ]
+}
+
+@test "defaults_mk PROJECTNAME equals directory of first loaded makefile by default and can't be overridden accidentally" {
+  EXPECTED="$(basename "$PROJECTPATH")"
+  VALUE="$("${MAKE[@]}" testhelper-print-PROJECTNAME)"
+  echo "$VALUE != $EXPECTED"
+  [ "$VALUE" = "$EXPECTED" ]
+  
+  export PROJECTNAME='myproject'
+  VALUE="$("${MAKE[@]}" testhelper-print-PROJECTNAME)"
+  echo "$VALUE != $EXPECTED"
+  [ "$VALUE" = "$EXPECTED" ]
+}
+
+@test "defaults_mk PROJECTNAME can be overridden by env var DOBUILD_PROJECTNAME" {
+  export DOBUILD_PROJECTNAME='myproject'
+  VALUE="$("${MAKE[@]}" testhelper-print-PROJECTNAME)"
+  echo "$VALUE"
+  [ "$VALUE" = "myproject" ]
+}
+
+@test "defaults_mk PROJECTDIR equals directory of first loaded makefile by default and can't be overridden accidentally" {
+  VALUE="$("${MAKE[@]}" testhelper-print-PROJECTDIR)"
+  echo "$VALUE != ."
+  [ "$VALUE" = '.' ]
+  
+  export PROJECTDIR='myproject'
+  VALUE="$("${MAKE[@]}" testhelper-print-PROJECTDIR)"
+  echo "$VALUE != ."
+  [ "$VALUE" = '.' ]
+}
+
+@test "defaults_mk PROJECTDIR can be overridden by env var DOBUILD_PROJECTDIR" {
+  export DOBUILD_PROJECTDIR='myproject'
+  VALUE="$("${MAKE[@]}" testhelper-print-PROJECTDIR)"
+  echo "$VALUE"
+  [ "$VALUE" = "myproject" ]
+}
+
+@test "defaults_mk USERID equals UID by default and can't be overridden accidentally" {
+  EXPECTED="$(id -u)"
+  VALUE="$("${MAKE[@]}" testhelper-print-USERID)"
+  echo "$VALUE != $EXPECTED"
+  [ "$VALUE" = "$EXPECTED" ]
+  
+  export USERID='an_user'
+  VALUE="$("${MAKE[@]}" testhelper-print-USERID)"
+  echo "$VALUE != $EXPECTED"
+  [ "$VALUE" = "$EXPECTED" ]
+}
+
+@test "defaults_mk USERID can be overridden by env var DOBUILD_USERID" {
+  EXPECTED="1234"
+  export DOBUILD_USERID="$EXPECTED"
+  VALUE="$("${MAKE[@]}" testhelper-print-USERID)"
+  echo "$VALUE != $EXPECTED"
+  [ "$VALUE" = "$EXPECTED" ]
+}
+
+@test "defaults_mk VERSION is empty when no version file exists" {
+  VALUE="$("${MAKE[@]}" testhelper-print-VERSION VERSIONFILE='')"
+  echo "$VALUE"
+  [ -z "$VALUE" ]
+}
+
+@test "defaults_mk VERSION equals version in provided file" {
+  EXPECTED='99.99.99'
+  echo "$EXPECTED" > "$VERSIONFILE"
+  VALUE="$("${MAKE[@]}" testhelper-print-VERSION)"
+  echo "$VALUE != $EXPECTED"
+  [ "$VALUE" = "$EXPECTED" ]
+}
+
+@test "defaults_mk HOST_CONTAINER can be overridden by env var DOBUILD_HOSTCONTAINER" {
+  EXPECTED="1234"
+  export DOBUILD_HOSTCONTAINER="$EXPECTED"
+  VALUE="$("${MAKE[@]}" testhelper-print-HOST_CONTAINER)"
+  echo "$VALUE != $EXPECTED"
+  [ "$VALUE" = "$EXPECTED" ]
+}
+
+@test "defaults_mk SOURCE_DATE_EPOCH is number" {
+  VALUE="$("${MAKE[@]}" testhelper-print-SOURCE_DATE_EPOCH)"
+  [ "$VALUE" -ge 0 ]
+}
+
+@test "defaults_mk SOURCE_DATE_EPOCH can be overridden" {
+  EXPECTED="1234"
+  VALUE="$("${MAKE[@]}" testhelper-print-SOURCE_DATE_EPOCH SOURCE_DATE_EPOCH="$EXPECTED")"
+  echo "$VALUE != $EXPECTED"
+  [ "$VALUE" = "$EXPECTED" ]
+}
+
+@test "defaults_mk BUILDTIME is not empty" {
+  VALUE="$("${MAKE[@]}" testhelper-print-BUILDTIME)"
+  [ -n "$VALUE" ]
+}
+
+@test "defaults_mk VERBOSE is off by default and can be overridden by env var" {
+  VALUE="$("${MAKE[@]}" testhelper-default-silent)"
+  echo "$VALUE"
+  [ -z "$VALUE" ]
+  
+  export VERBOSE=1
+  VALUE="$("${MAKE[@]}" testhelper-default-silent)"
+  echo "$VALUE"
+  [ "$VALUE" = 'true' ]
+}
+
+@test "defaults_mk JOBSLOTS defaults to system available processors" {
+  EXPECTED="$(nproc)"
+  VALUE="$("${MAKE[@]}" testhelper-print-JOBSLOTS)"
+  echo "$VALUE != $EXPECTED"
+  [ "$VALUE" -eq "$EXPECTED" ]
+}
+
+@test "defaults_mk JOBSLOTS defaults to system available processors when make called recursive without -j" {
+  EXPECTED="$(nproc)"
+  VALUE="$("${MAKE[@]}" testhelper-recursive-print-JOBSLOTS)"
+  echo "$VALUE != $EXPECTED"
+  [ "$VALUE" -eq "$EXPECTED" ]
+}
+
+@test "defaults_mk JOBSLOTS defaults to system available processors when make called recursive with unlimited job slots" {
+  EXPECTED="$(nproc)"
+  VALUE="$("${MAKE[@]}" -j testhelper-recursive-print-JOBSLOTS)"
+  echo "$VALUE != $EXPECTED"
+  [ "$VALUE" -eq "$EXPECTED" ]
+}
+
+@test "defaults_mk JOBSLOTS defaults to 2 when make called recursive with limited job slots" {
+  EXPECTED="2"
+  VALUE="$("${MAKE[@]}" -j10 testhelper-recursive-print-JOBSLOTS)"
+  echo "$VALUE != $EXPECTED"
+  [ "$VALUE" -eq "$EXPECTED" ]
+}
+
+@test "defaults_mk JOBSLOTS should be equal to last make command line argument" {
+  VALUE="$("${MAKE[@]}" -j10 -j   42 testhelper-print-JOBSLOTS)"
+  echo "$VALUE != 42"
+  [ "$VALUE" -eq "42" ]
+
+  VALUE="$("${MAKE[@]}" -j14 testhelper-print-JOBSLOTS)"
+  echo "$VALUE != 14"
+  [ "$VALUE" -eq "14" ]
+  
+  VALUE="$("${MAKE[@]}" -j11 testhelper-print-JOBSLOTS)"
+  echo "$VALUE != 11"
+  [ "$VALUE" -eq "11" ]
+
+  VALUE="$("${MAKE[@]}" --jobs 11 --jobs 	10 testhelper-print-JOBSLOTS)"
+  echo "$VALUE != 10"
+  [ "$VALUE" -eq "10" ]
+
+  VALUE="$("${MAKE[@]}" -j10 --jobs=88 testhelper-print-JOBSLOTS)"
+  echo "$VALUE != 88"
+  [ "$VALUE" -eq "88" ]
+}
+
+@test "defaults_mk MAKE_VERSION should be greater or equal to 3.81 warning" {
+  run "${MAKE[@]}" make_version=4.1 testhelper-print-EXPECTATIONS 2>&1
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ ! "${lines[@]}" =~ "Using old make version" ]]
+
+  run "${MAKE[@]}" make_version=3.80 testhelper-print-EXPECTATIONS 2>&1
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ "${lines[@]}" =~ "Using old make version" ]]
+}
+

tests/60_standardrules_mk.bats

@@ -0,0 +1,237 @@
+#!/usr/bin/env bats
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+load test_helper
+
+setup() {
+  PROJECTPATH="$(readlink -f "$BATS_TEST_DIRNAME/..")"
+  BINPATH="$PROJECTPATH/bin"
+  PATH="$BINPATH:$PATH"
+  OUTDIR="$(mktemp --directory --tmpdir="$BATS_TMPDIR" standardrules_XXXXXXXXXX)"
+  MAKE=("make" --no-print-directory -C "$PROJECTPATH" -f standardrules.mk -f "$BATS_TEST_DIRNAME/test_helper.mk")
+  
+  export DOBUILD_OUTDIR="$OUTDIR"
+}
+
+teardown() {
+  rm -rf "$OUTDIR"
+}
+
+has_required_version() {
+  local major=${1:-0}
+  local minor=${2:-0}
+  local bugfix=${3:-0}
+  
+  set -- $(sed -n -e 's/.* Make \([0-9]\+\)[.]\([0-9]\+\)\([.]\([0-9]\+\)\)\?/\1 \2 \4/p')
+  
+  if [ "$1" -gt "$major" ]; then
+    return 0
+  fi
+  if [ "$1" -lt "$major" ]; then
+    return -1
+  fi
+
+  if [ "$2" -gt "$minor" ]; then
+    return 0
+  fi
+  if [ "$2" -lt "$minor" ]; then
+    return -2
+  fi
+
+  if [ "${3:-0}" -ge "$bugfix" ]; then
+    return 0
+  fi
+  
+  return -3
+}
+
+make_has_required_version() {
+  "${MAKE[@]}" --version | has_required_version "$@"
+}
+
+@test "standardrules_mk has required deps" {
+  "${MAKE[@]}" --version
+}
+
+@test "standardrules_mk has required makefile deps" {
+  "${MAKE[@]}" testhelper-print-MAKEFILE_DEPS | sort -u | parallel --keep-order command -V
+}
+
+@test "standardrules_mk PROJECTDIR should not contain whitespace" {
+  run "${MAKE[@]}" PROJECTDIR='my project'
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -ne 0 ]
+  [[ "${lines[@]}" =~ "Project directory PROJECTDIR='my project' should not contain whitespaces" ]]
+}
+
+@test "standardrules_mk DOBUILDDIR should not contain whitespace" {
+  run "${MAKE[@]}" DOBUILDDIR='my scriptdir'
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -ne 0 ]
+  [[ "${lines[@]}" =~ "Script directory DOBUILDDIR='my scriptdir' should not contain whitespaces" ]]
+}
+
+@test "standardrules_mk OUTDIRS should not contain PROJECTDIR" {
+  run "${MAKE[@]}" PROJECTDIR="$PROJECTPATH" OUTDIR='.'
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -ne 0 ]
+  [[ "${lines[@]}" =~ "assertion failed: Project location PROJECTDIR" ]]
+  [[ "${lines[@]}" =~ "should not point to one of the output locations" ]]
+}
+
+@test "standardrules_mk all targets are tested" {
+  run "${MAKE[@]}" print-targets 2>&1
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = 'all' ]
+  [ "${lines[1]}" = 'check' ]
+  [ "${lines[2]}" = 'clean' ]
+  [ "${lines[3]}" = 'dist' ]
+  [ "${lines[4]}" = 'distclean' ]
+  [ "${lines[5]}" = 'install' ]
+  [ "${lines[6]}" = 'lint' ]
+  [ "${lines[7]}" = 'memcheck' ]
+  [ "${lines[8]}" = 'prepare' ]  
+  [ "${lines[9]}" = 'print-targets' ]
+  [ "${lines[10]}" = 'run' ]
+  # do not forget to add a test :)
+  [ "${#lines[@]}" -ge 11 ]
+}
+
+@test "standardrules_mk should run default target 'all' by default" {
+  run "${MAKE[@]}" 2>&1
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ "${lines[@]}" =~ 'make: Nothing to be done for '[\`|\']"all'." ]]
+}
+
+@test "standardrules_mk returns success when empty check target is triggered" {
+  run "${MAKE[@]}" check 2>&1
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ "${lines[@]}" =~ 'make: Nothing to be done for '[\`|\']"check'." ]]
+}
+
+@test "standardrules_mk returns success when empty clean target is triggered" {
+  run "${MAKE[@]}" clean 2>&1
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ "${lines[@]}" =~ 'make: Nothing to be done for '[\`|\']"clean'." ]]
+}
+
+@test "standardrules_mk returns success when empty distclean target is triggered" {
+  run "${MAKE[@]}" distclean 2>&1
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ "${lines[@]}" =~ 'make: Nothing to be done for '[\`|\']"distclean'." ]]
+}
+
+@test "standardrules_mk returns success when empty prepare target is triggered " {
+  run "${MAKE[@]}" prepare 2>&1
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ "${lines[@]}" =~ 'make: Nothing to be done for '[\`|\']"prepare'." ]]
+}
+
+@test "standardrules_mk returns success when empty lint target is triggered" {
+  run "${MAKE[@]}" lint 2>&1
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ "${lines[@]}" =~ 'make: Nothing to be done for '[\`|\']"lint'." ]]
+}
+
+@test "standardrules_mk returns success when empty memcheck target is triggered" {
+  run "${MAKE[@]}" memcheck 2>&1
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ "${lines[@]}" =~ 'make: Nothing to be done for '[\`|\']"memcheck'." ]]
+}
+
+@test "standardrules_mk returns success when empty run target is triggered" {
+  run "${MAKE[@]}" run 2>&1
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ "${lines[@]}" =~ 'make: Nothing to be done for '[\`|\']"run'." ]]
+}
+
+@test "standardrules_mk returns error when makefile dependency are unsatisfied" {
+  run "${MAKE[@]}" MAKEFILE_DEPS='not-found1 not-found2 cat' not-found1 2>&1
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -ne 0 ]
+  [[ "${lines[@]}" =~ "Required commands not-found1 not-found2 not found; install appropriate packages" ]]
+}
+
+@test "standardrules_mk should print PROJECTNAME when target triggered" {
+  EXPECTED="$(basename "$PROJECTPATH")"
+  VALUE="$("${MAKE[@]}" debug-print-PROJECTNAME)"
+  
+  echo "$VALUE != $EXPECTED"
+  [ "$VALUE" = "$EXPECTED" ]
+}
+
+@test "standardrules_mk EXTERNPARALLEL should default to 1 when make called recursive with limited job slots" {
+  EXPECTED="1"
+  VALUE="$("${MAKE[@]}" -j10 testhelper-recursive-print-EXTERNPARALLEL)"
+  echo "$VALUE != $EXPECTED"
+  [ "$VALUE" -eq "$EXPECTED" ]
+}
+
+@test "standardrules_mk INTERNPARALLEL should default to 2 when make called recursive with limited job slots" {
+  EXPECTED="2"
+  VALUE="$("${MAKE[@]}" -j10 testhelper-recursive-print-INTERNPARALLEL)"
+  echo "$VALUE != $EXPECTED"
+  [ "$VALUE" -eq "$EXPECTED" ]
+}
+
+@test "standardrules_mk EXTERNPARALLEL * INTERNPARALLEL should not exceed provided job slots" {
+  PARALLELMFLAGS='-j10'
+  EXPECTED='10'
+  EXTERNPARALLEL="$("${MAKE[@]}" "$PARALLELMFLAGS" testhelper-print-EXTERNPARALLEL)"
+  INTERNPARALLEL="$("${MAKE[@]}" "$PARALLELMFLAGS" testhelper-print-INTERNPARALLEL)"
+  VALUE="$(($EXTERNPARALLEL * $INTERNPARALLEL))"
+  echo "$VALUE != $EXPECTED"
+  [ "$VALUE" -eq "$EXPECTED" ]
+}
+
+@test "standardrules_mk EXTERNPARALLEL should not exceed active targets" {
+  EXPECTED="$("${MAKE[@]}" testhelper-print-JOBS)"
+  VALUE="$("${MAKE[@]}" testhelper-print-EXTERNPARALLEL)"
+  echo "$VALUE <= $EXPECTED"
+  [ "$VALUE" -le "$EXPECTED" ]
+}
+
+@test "standardrules_mk MAKEFLAGS should contain output-sync option when job slots greater than 1" {
+  if ! make_has_required_version '4'; then
+    skip "make version too old '$("${MAKE[@]}" --version)'"
+  fi
+
+  run "${MAKE[@]}" testhelper-print-MAKEFLAGS EXTERNPARALLEL="32"
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ "${lines[@]}" =~ "-Otarget" ]]
+}
+
+@test "standardrules_mk MAKEFLAGS should not contain output-sync option when job slots equal to 1" {
+  run "${MAKE[@]}" testhelper-print-MAKEFLAGS EXTERNPARALLEL="1"
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ ! "${lines[@]}" =~ "-Otarget" ]]
+}

tests/70_cmake_docker_mk.bats

@@ -0,0 +1,164 @@
+#!/usr/bin/env bats
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+load test_helper
+
+setup() {
+  PROJECTPATH="$(readlink -f "$BATS_TEST_DIRNAME/..")"
+  FIXTUREPATH="$(readlink -f "$BATS_TEST_DIRNAME/fixtures/cmake-gtest-example")"
+  BUILDDIR="$(mktemp --directory --tmpdir="$BATS_TMPDIR" cmake_XXXXXXXXXX)"
+  MAKE=(timeout --preserve-status --signal=SIGTERM 300 "make" --no-print-directory -C "$FIXTUREPATH" -f Makefile -f "$BATS_TEST_DIRNAME/test_helper.mk")
+  
+  export DOBUILD_BUILDDIR="$BUILDDIR"
+}
+
+teardown() {
+  rm -rf "$BUILDDIR"
+}
+
+@test "cmake_docker_mk has required deps" {
+  "${MAKE[@]}" --version
+}
+
+@test "cmake_docker_mk has required makefile deps" {
+  "${MAKE[@]}" testhelper-print-MAKEFILE_DEPS | sort -u | parallel --keep-order command -V
+}
+
+@test "cmake_docker_mk should run default target 'all' with make generator by default" {
+  run "${MAKE[@]}"
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ "${lines[@]}" =~ "Configuring done" ]]
+  [[ "${lines[@]}" =~ "Generating done" ]]
+  [[ "${lines[@]}" =~ "Linking CXX executable alltests" ]]
+  
+  run "${MAKE[@]}"
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ ! "${lines[@]}" =~ "Configuring done" ]]
+  [[ ! "${lines[@]}" =~ "Generating done" ]]
+  [[ ! "${lines[@]}" =~ "Linking CXX executable alltests" ]]
+}
+
+@test "cmake_docker_mk build should be reproducible using make generator" {
+  run "${MAKE[@]}"
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ "${lines[@]}" =~ "Configuring done" ]]
+  [[ "${lines[@]}" =~ "Generating done" ]]
+  [[ "${lines[@]}" =~ "Linking CXX executable alltests" ]]
+  
+  mv "$BUILDDIR/.build/"*/alltests "$BUILDDIR"
+  rm -rf "$BUILDDIR/.build"
+  
+  run "${MAKE[@]}"
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ "${lines[@]}" =~ "Linking CXX executable alltests" ]]
+
+  diff <(xxd "$BUILDDIR/.build/"*/alltests) <(xxd "$BUILDDIR/alltests")
+}
+
+@test "cmake_docker_mk should run default target 'all' with ninja generator" {
+  run "${MAKE[@]}" CMAKE_GENERATOR=ninja
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ "${lines[@]}" =~ "Configuring done" ]]
+  [[ "${lines[@]}" =~ "Generating done" ]]
+  [[ "${lines[@]}" =~ "Linking CXX executable alltests" ]]
+  
+  run "${MAKE[@]}" CMAKE_GENERATOR=ninja
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ ! "${lines[@]}" =~ "Configuring done" ]]
+  [[ ! "${lines[@]}" =~ "Generating done" ]]
+  [[ "${lines[@]}" =~ "ninja: no work to do" ]]
+}
+
+@test "cmake_docker_mk build should be reproducible using ninja generator" {
+  run "${MAKE[@]}" CMAKE_GENERATOR=ninja
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ "${lines[@]}" =~ "Configuring done" ]]
+  [[ "${lines[@]}" =~ "Generating done" ]]
+  [[ "${lines[@]}" =~ "Linking CXX executable alltests" ]]
+  
+  mv "$BUILDDIR/.build/"*/alltests "$BUILDDIR"
+  rm -rf "$BUILDDIR/.build"
+  
+  run "${MAKE[@]}" CMAKE_GENERATOR=ninja
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ "${lines[@]}" =~ "Linking CXX executable alltests" ]]
+  
+  diff <(xxd "$BUILDDIR/.build/"*/alltests) <(xxd "$BUILDDIR/alltests")
+}
+
+@test "cmake_docker_mk should run tests when check target is triggered after a successful built" {
+  run "${MAKE[@]}"
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ "${lines[@]}" =~ "Linking CXX executable alltests" ]]
+  
+  run "${MAKE[@]}" check
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ ! "${lines[@]}" =~ "Configuring done" ]]
+  [[ ! "${lines[@]}" =~ "Generating done" ]]
+  [[ "${lines[@]}" =~ "100% tests passed, 0 tests failed out of 1" ]]
+
+  run "${MAKE[@]}" check
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ ! "${lines[@]}" =~ "Configuring done" ]]
+  [[ ! "${lines[@]}" =~ "Generating done" ]]
+  [[ "${lines[@]}" =~ "100% tests passed, 0 tests failed out of 1" ]]
+}
+
+@test "cmake_docker_mk should run tests with memcheck when memcheck target is triggered after a successful built" {
+  run debug_trace "${MAKE[@]}"
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ "${lines[@]}" =~ "Linking CXX executable alltests" ]]
+  
+  "${MAKE[@]}" debug-print-MEMCHECKFILTER
+  run debug_trace "${MAKE[@]}" memcheck
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ ! "${lines[@]}" =~ "Configuring done" ]]
+  [[ ! "${lines[@]}" =~ "Generating done" ]]
+  [[ "${lines[@]}" =~ "Memory check" ]]
+  [[ "${lines[@]}" =~ "100% tests passed, 0 tests failed out of 1" ]]
+
+  "${MAKE[@]}" debug-print-MEMCHECKFILTER
+  run debug_trace "${MAKE[@]}" memcheck
+  
+  printf -- '%s\n' "${lines[@]}"
+  [ "$status" -eq 0 ]
+  [[ ! "${lines[@]}" =~ "Configuring done" ]]
+  [[ ! "${lines[@]}" =~ "Generating done" ]]
+  [[ "${lines[@]}" =~ "Memory check" ]]
+  [[ "${lines[@]}" =~ "100% tests passed, 0 tests failed out of 1" ]]
+}
+

tests/fixtures/cmake-gtest-example/CMakeLists.txt

@@ -0,0 +1,19 @@
+cmake_minimum_required(VERSION 2.8)
+
+project(cmake-gtest-example)
+
+option(POSITION_INDEPENDENT_CODE "This variable is used to initialize the POSITION_INDEPENDENT_CODE property on all the targets" ON)
+
+include(CTest)
+
+add_executable(alltests
+  test_stringcompare.cpp
+)
+
+target_include_directories(alltests PUBLIC ${GTEST_INCLUDE_DIRS})
+target_compile_options(alltests PUBLIC -Wall -Wextra ${GTEST_CFLAGS})
+target_link_libraries(alltests PUBLIC -pthread ${GTEST_LIBRARIES} gtest_main gtest)
+
+enable_testing()
+add_test(NAME alltests COMMAND alltests)
+

tests/fixtures/cmake-gtest-example/Makefile

@@ -0,0 +1,95 @@
+SHELL := /bin/sh
+MAKEFILE := $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
+MAKEFLAGS += --no-builtin-rules
+
+.SUFFIXES:
+
+.PHONY: default
+default: all
+
+#######################################################################################################################
+# Overridable project defaults
+
+DOBUILD_TOPDIR ?= $(DOBUILDDIR)
+DOBUILD_PROJECTDIR ?= $(patsubst %/,%,$(dir $(MAKEFILE)))
+
+PROJECTDIR = $(DOBUILD_PROJECTDIR)
+DOBUILDDIR ?= $(PROJECTDIR)/../../..
+
+include $(DOBUILDDIR)/defaults.mk
+
+#######################################################################################################################
+# Project defaults and macros
+
+DEFAULTTARGET = x86_64-ubuntu@bionic+builder
+
+FETCHDIR = $(BUILDDIR)/.deps
+
+#######################################################################################################################
+# Project dependencies
+
+DUMB_INIT_VERSION = 1.2.2
+IMAGE_BUILDARGS += DUMB_INIT_VERSION=$(DUMB_INIT_VERSION)
+IMAGE_BUILDARGS += DUMB_INIT_MTIME=$(call mtime,$(FETCHDIR)/dumb-init-$(DUMB_INIT_VERSION).tar.gz)
+FETCH_TARGETS += $(FETCHDIR)/dumb-init-$(DUMB_INIT_VERSION).tar.gz
+$(FETCHDIR)/dumb-init-$(DUMB_INIT_VERSION).tar.gz: URL = https://github.com/Yelp/dumb-init/archive/v$(DUMB_INIT_VERSION).tar.gz
+$(SKIP_MD5SUM)$(FETCHDIR)/dumb-init-$(DUMB_INIT_VERSION).tar.gz: MD5 = 6166084b05772cdcf615a762c6f3b32e
+
+GTEST_VERSION = 1.8.0
+IMAGE_BUILDARGS += GTEST_VERSION=$(GTEST_VERSION)
+IMAGE_BUILDARGS += GTEST_MTIME=$(call mtime,$(FETCHDIR)/googletest-release-$(GTEST_VERSION).tar.gz)
+FETCH_TARGETS += $(FETCHDIR)/googletest-release-$(GTEST_VERSION).tar.gz
+$(FETCHDIR)/googletest-release-$(GTEST_VERSION).tar.gz: URL := https://github.com/google/googletest/archive/release-$(GTEST_VERSION).tar.gz
+$(SKIP_MD5SUM)$(FETCHDIR)/googletest-release-$(GTEST_VERSION).tar.gz: MD5 := 16877098823401d1bf2ed7891d7dce36
+
+#######################################################################################################################
+# Architecture-specific rule target configuration
+
+CMAKE_TARGETS += x86_64-ubuntu@bionic+builder
+DOCKER_TARGETS += $(CMAKE_TARGETS)
+
+#######################################################################################################################
+# Common rule target configuration
+
+CURLFLAGS += -s
+
+DOCKER_RUNFLAGS += --cap-add SYS_PTRACE
+DOCKER_RUNFLAGS += --security-opt seccomp=unconfined
+
+OUTDIRS += $(OUTDIR)/src
+
+EXTRACT_TARGETS += $(patsubst $(FETCHDIR)/%.tar.gz,$(OUTDIR)/src/%,$(FETCH_TARGETS))
+
+#######################################################################################################################
+# Makefile dependencies
+
+MAKEFILE_DEPS += gzip
+MAKEFILE_DEPS += tar
+MAKEFILE_DEPS += touch
+MAKEFILE_DEPS += cp
+MAKEFILE_DEPS += mkdir
+
+#######################################################################################################################
+# Rules
+
+include $(DOBUILDDIR)/cmake.mk
+include $(DOBUILDDIR)/docker.mk
+include $(DOBUILDDIR)/standardrules.mk
+
+$(OUTDIR)/src/%: $(FETCHDIR)/%.tar.gz | $(OUTDIRS)
+	$(SILENT) \
+	     $(call echo_if_silent_cmd,tar -C $(dir $@) -xf $<) \
+	  && tar -I 'gzip -n' -C $(dir $@) -xf $< \
+	  && touch $@
+
+$(OUTDIR)/docker/%.dockerfile : $(PROJECTDIR)/%.dockerfile | $(OUTDIRS)
+	cp $< $@
+
+$(FETCH_TARGETS): | $(FETCHDIR)
+	$(SILENT)$(call curl,$@,$(URL),$(MD5))
+
+$(FETCHDIR):
+	$(SILENT)mkdir -p $@
+
+.DELETE_ON_ERROR: $(FETCH_TARGETS)
+

tests/fixtures/cmake-gtest-example/test_stringcompare.cpp

@@ -0,0 +1,24 @@
+#include <gtest/gtest.h>
+
+#include <string>
+using std::string;
+
+char const actualValTrue[] = "hello gtest";
+char const actualValFalse[] = "hello world";
+char const expectVal[] = "hello gtest";
+
+TEST(StrCompare, Equal)
+{
+  EXPECT_STREQ(expectVal, actualValTrue);
+}
+
+TEST(StrCompare, NotEqual)
+{
+  EXPECT_STRNE(expectVal, actualValFalse);
+}
+
+TEST(StrCompare, WithNonReproducibleValues)
+{
+  EXPECT_STREQ(__DATE__, __DATE__);
+  EXPECT_STREQ(__TIME__, __TIME__);
+}

tests/fixtures/cmake-gtest-example/x86_64-ubuntu-builder.dockerfile

@@ -0,0 +1,94 @@
+ARG REGISTRY_PREFIX=''
+ARG CODENAME=bionic
+
+FROM ${REGISTRY_PREFIX}ubuntu:${CODENAME} as builder
+
+ARG TZ=UTC
+ENV LANG=C.UTF-8
+ENV LC_ALL=${LANG}
+
+RUN set -x \
+  && installdeps="tzdata" \
+  && rm -f /etc/apt/sources.list.d/*.list \
+  && apt-get update \
+  && apt-get install --yes --no-install-recommends $installdeps \
+  && ls /usr/share/zoneinfo \
+  && cp -H --remove-destination "/usr/share/zoneinfo/$TZ" /tmp/localtime \
+  && { apt-get purge -y $installdeps || true; } \
+  && mv /tmp/localtime /etc/localtime \
+  && echo "$TZ" > /etc/timezone \
+  && apt-get update \
+  && apt-get install --yes --no-install-recommends \
+       build-essential \
+       cmake \
+  && rm -rf /var/lib/apt/lists/*
+
+COPY src /usr/local/src
+
+ARG PARALLELMFLAGS=-j2
+
+ARG DUMB_INIT_VERSION=1.2.2
+ARG DUMB_INIT_MTIME=
+RUN set -x \
+  && builddeps="vim-common" \
+  && apt-get update \
+  && apt-get install --yes --no-install-recommends $builddeps  \
+  && rm -rf /var/lib/apt/lists/* \
+  && [ -n "$DUMB_INIT_MTIME" ] && export SOURCE_DATE_EPOCH="$DUMB_INIT_MTIME" \
+  && builddir="/tmp/out" \
+  && mkdir -p "$builddir" \
+  && cd "$builddir" \
+  && cp -R "/usr/local/src/dumb-init-$DUMB_INIT_VERSION" . \
+  && cd "dumb-init-$DUMB_INIT_VERSION" \
+  && make "$PARALLELMFLAGS" \
+  && chmod +x dumb-init \
+  && mv dumb-init /usr/local/bin/dumb-init \
+  && dumb-init --version \
+  && rm -rf "$builddir" \
+  && apt-get purge -y $builddeps
+
+ARG GTEST_VERSION=1.8.1
+ARG GTEST_MTIME=
+
+RUN set -x \
+  && [ -n "$GTEST_MTIME" ] && export SOURCE_DATE_EPOCH="$GTEST_MTIME" \
+  && builddir="/tmp/out" \
+  && mkdir -p "$builddir" \
+  && cd "$builddir" \
+  && cmake "/usr/local/src/googletest-release-$GTEST_VERSION" \
+  && make "$PARALLELMFLAGS" install \
+  && rm -rf "$builddir"
+
+FROM ${REGISTRY_PREFIX}ubuntu:${CODENAME}
+
+ARG TZ=UTC
+ENV LANG=C.UTF-8
+ENV LC_ALL=${LANG}
+
+COPY --from=builder /usr/local /usr/local
+COPY --from=builder /etc/localtime /etc/localtime
+COPY --from=builder /etc/timezone /etc/timezone
+COPY --from=builder /etc/apt/sources.list.d /etc/apt/sources.list.d
+
+RUN set -x \
+  && rm -f /etc/apt/sources.list.d/*.list \
+  && apt-get update \
+  && apt-get install --yes --no-install-recommends \
+       build-essential \
+       cmake \
+       ninja-build \
+       pkg-config \
+       gdb \
+       gdbserver \
+       valgrind \
+  && rm -rf /var/lib/apt/lists/*
+
+ENV LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/local/lib"
+
+ARG USERID=1000
+RUN set -x \
+  && useradd -u "$USERID" -ms /bin/bash user
+
+ENTRYPOINT ["dumb-init", "--"]
+CMD [ "/bin/bash" ]
+

tests/fixtures/make-gtest-example/Makefile

@@ -0,0 +1,18 @@
+# Makefile for gtest example
+
+CPPFLAGS = -I /usr/local/include
+CXXFLAGS = -c -Wall
+LDFLAGS = -L /usr/local/lib -l gtest_main -l gtest -l pthread
+
+TARGET = alltests
+OBJECTS = test_stringcompare.o
+
+all: $(TARGET)
+
+$(TARGET): $(OBJECTS)
+	$(CXX) -o $@ $^ $(LD_FLAGS)
+
+clean:
+	rm -f $(TARGET) $(OBJECTS)
+
+.PHONY: all clean

tests/fixtures/make-gtest-example/test_stringcompare.cpp

@@ -0,0 +1,18 @@
+#include <gtest/gtest.h> // googletest header file
+
+#include <string>
+using std::string;
+
+char const actualValTrue[] = "hello gtest";
+char const actualValFalse[] = "hello world";
+char const expectVal[] = "hello gtest";
+
+TEST(StrCompare, CStrEqual)
+{
+  EXPECT_STREQ(expectVal, actualValTrue);
+}
+
+TEST(StrCompare, CStrNotEqual)
+{
+  EXPECT_STRNE(expectVal, actualValFalse);
+}

tests/get_container_id.dockerfile

@@ -0,0 +1,27 @@
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+ARG REGISTRY_PREFIX=''
+ARG DOCKER_VERSION=18.09.6
+
+FROM ${REGISTRY_PREFIX}docker:${DOCKER_VERSION}-dind
+
+ARG USERID=1000
+ARG PROJECTPATH=/home/user/dobuild
+
+RUN set -x \
+  && adduser -u "$USERID" -s /bin/sh -D user \
+  && mkdir -p "$PROJECTPATH" \
+  && chown user:user "$PROJECTPATH"
+
+COPY --chown=user:user . "$PROJECTPATH"
+WORKDIR "$PROJECTPATH/bin"
+
+VOLUME "$PROJECTPATH"

tests/runners/bats.dockerfile

@@ -0,0 +1,167 @@
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+ARG REGISTRY_PREFIX=''
+ARG CODENAME=trusty
+
+FROM ${REGISTRY_PREFIX}ubuntu:${CODENAME} as builder
+
+ARG TZ=UTC
+ENV LANG=C.UTF-8
+ENV LC_ALL=${LANG}
+
+ARG PARALLELMFLAGS=
+
+ARG DOCKER_CHANNEL=stable
+ARG DOCKER_VERSION=18.09.6
+ARG DOCKER_MD5=a6be1e734421d05abfc4d3e28997e271
+ARG DOCKER_DOWNLOAD=https://download.docker.com
+
+ARG DOCKER_HOME="/usr/local/lib/docker-$DOCKER_VERSION"
+
+ARG CAPATH="./ca-certificates"
+COPY $CAPATH /usr/local/share/ca-certificates
+
+RUN set -x \
+  && { update-ca-certificates || true; } \
+  && installdeps="tzdata" \
+  && apt-get update \
+  && apt-get install --yes --no-install-recommends $installdeps \
+  && ls /usr/share/zoneinfo \
+  && cp -H --remove-destination "/usr/share/zoneinfo/$TZ" /tmp/localtime \
+  && { apt-get purge -y $installdeps || true; } \
+  && mv /tmp/localtime /etc/localtime \
+  && echo "$TZ" > /etc/timezone \
+  && apt-get install --yes --no-install-recommends \
+       ca-certificates \
+       curl \
+       openssl \
+       build-essential \
+       make \
+  && rm -rf /var/lib/apt/lists/* \
+  && update-ca-certificates
+
+RUN set -x \
+  && curl -fSL -s "$DOCKER_DOWNLOAD/linux/static/${DOCKER_CHANNEL}/$(uname -m)/docker-${DOCKER_VERSION}.tgz" -o docker.tgz \
+  && md5sum docker.tgz \
+  && echo "$DOCKER_MD5  docker.tgz" | md5sum -c - \
+  && tar -xzvf docker.tgz \
+  && mkdir -p "$DOCKER_HOME" \
+  && mv docker/docker "$DOCKER_HOME" \
+  && rm -rf docker \
+  && rm docker.tgz \
+  && ln -s "$DOCKER_HOME/docker" /usr/local/bin/docker
+
+ARG BATS_VERSION=1.1.0
+ARG BATS_MD5=0cb16021aa8f75a29240434c5aaae0a1
+ARG BATS_DOWNLOAD=https://github.com/bats-core
+
+RUN set -x \
+  && builddeps="coreutils ncurses-bin bash" \
+  && apt-get update \
+  && apt-get install --yes --no-install-recommends $builddeps \
+  && rm -rf /var/lib/apt/lists/* \
+  && curl -fSL -s "$BATS_DOWNLOAD/bats-core/archive/v$BATS_VERSION.tar.gz" -o bats.tar.gz \
+  && md5sum bats.tar.gz \
+  && echo "$BATS_MD5  bats.tar.gz" | md5sum -c - \
+  && tar -xzvf bats.tar.gz \
+  && bash "bats-core-$BATS_VERSION/install.sh" /usr/local \
+  && rm -rf "bats-core-$BATS_VERSION" \
+  && rm bats.tar.gz
+
+ARG DUMB_INIT_VERSION=1.2.2
+ARG DUMB_INIT_MD5=6166084b05772cdcf615a762c6f3b32e
+ARG DUMB_INIT_DOWNLOAD=https://github.com/Yelp/dumb-init
+
+RUN set -x \
+  && parallelMFlags="$PARALLELMFLAGS" \
+  && [ -n "$parallelMFlags" ] || parallelMFlags="-j$(nproc)" \
+  && builddeps="vim-common" \
+  && apt-get update \
+  && apt-get install --yes --no-install-recommends $builddeps \
+  && rm -rf /var/lib/apt/lists/* \
+  && curl -fSL -s "$DUMB_INIT_DOWNLOAD/archive/v${DUMB_INIT_VERSION}.tar.gz" -o dumb-init.tar.gz \
+  && md5sum dumb-init.tar.gz \
+  && echo "$DUMB_INIT_MD5  dumb-init.tar.gz" | md5sum -c - \
+  && export SOURCE_DATE_EPOCH="$(stat -c '%Y' dumb-init.tar.gz)" \
+  && tar -xzvf dumb-init.tar.gz \
+  && cd "dumb-init-$DUMB_INIT_VERSION" \
+  && make "$parallelMFlags" \
+  && chmod +x dumb-init \
+  && cp dumb-init /usr/local/bin/dumb-init \
+  && cd .. \
+  && rm -rf "dumb-init-$DUMB_INIT_VERSION" \
+  && rm dumb-init.tar.gz \
+  && apt-get purge -y $builddeps
+
+ARG LIBFAKETIME_VERSION=0.9.7
+ARG LIBFAKETIME_MD5=8617e2c6caf0977b3ce9a271f867302c
+ARG LIBFAKETIME_DOWNLOAD=https://github.com/wolfcw/libfaketime
+
+RUN set -x \
+  && parallelMFlags="$PARALLELMFLAGS" \
+  && [ -n "$parallelMFlags" ] || parallelMFlags="-j$(nproc)" \
+  && curl -fSL -s "$LIBFAKETIME_DOWNLOAD/archive/v${LIBFAKETIME_VERSION}.tar.gz" -o libfaketime.tar.gz \
+  && md5sum libfaketime.tar.gz \
+  && echo "$LIBFAKETIME_MD5  libfaketime.tar.gz" | md5sum -c - \
+  && export SOURCE_DATE_EPOCH="$(stat -c '%Y' libfaketime.tar.gz)" \
+  && tar -xzvf libfaketime.tar.gz \
+  && cd "libfaketime-$LIBFAKETIME_VERSION" \
+  && prefix='/usr/local' \
+  && make "$parallelMFlags" \
+       CFLAGS="-fpic -lpthread -Wno-error -D'PREFIX=\"${prefix}\"' -D'LIBDIRNAME=\"lib\"'" \
+       LDFLAGS='-fpic -lpthread' \
+  && make install \
+  && cd .. \
+  && rm -rf "libfaketime-$LIBFAKETIME_VERSION" \
+  && rm libfaketime.tar.gz
+
+FROM ${REGISTRY_PREFIX}ubuntu:${CODENAME}
+
+ARG TZ=UTC
+ENV LANG=C.UTF-8
+ENV LC_ALL=${LANG}
+
+COPY --from=builder /usr/local /usr/local
+COPY --from=builder /etc/localtime /etc/localtime
+COPY --from=builder /etc/timezone /etc/timezone
+COPY --from=builder /etc/apt/sources.list.d /etc/apt/sources.list.d
+
+RUN set -x \
+  && { update-ca-certificates || true; } \
+  && apt-get update \
+  && apt-get install --yes --no-install-recommends \
+       coreutils \
+       ncurses-bin \
+       bash \
+       procps \
+       parallel \
+       ca-certificates \
+       make \
+       git \
+       curl \
+  && rm -rf /var/lib/apt/lists/* \
+  && update-ca-certificates \
+  && useradd -ms /bin/bash user
+  
+USER user
+
+# Accept the citation notice of GNU parallel (we aren't using this in a
+# context where it make sense to cite GNU Parallel).
+RUN set -x \
+  && mkdir -p ~/.parallel \
+  && touch ~/.parallel/will-cite
+
+RUN dumb-init --version
+RUN parallel --version
+RUN docker --version
+RUN bats --version
+
+ENTRYPOINT ["dumb-init", "--"]

tests/runners/dind-bind_mount.yml

@@ -0,0 +1,17 @@
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+version: "2.4"
+
+services:
+  dind:
+    volumes:
+      - .:${COMPOSEENV_PROJECTPATH}:ro
+

tests/runners/dind-volumes_from.yml

@@ -0,0 +1,17 @@
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+version: "2.4"
+
+services:
+  dind:
+    volumes_from:
+      - container:${COMPOSEENV_VOLUMESFROM}:ro
+

tests/runners/dind.dockerfile

@@ -0,0 +1,24 @@
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+ARG REGISTRY_PREFIX=''
+ARG DOCKER_VERSION=18.09.6
+
+FROM ${REGISTRY_PREFIX}docker:${DOCKER_VERSION}-dind
+
+ARG CAPATH="./ca-certificates"
+COPY $CAPATH /usr/local/share/ca-certificates
+
+RUN set -x \
+  && { update-ca-certificates || true; } \
+  && apk add --no-cache \
+       ca-certificates \
+  && update-ca-certificates
+

tests/test_helper.bash

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+DOCKER="${DOCKER:-docker}"
+export DOCKER
+
+USERID="${USERID:-$(id -u)}"
+
+_cancel() {
+  if [[ -t 3 ]]; then
+    exec 3<&-
+  fi
+}
+
+debug_trace() {
+  echo "${@}" 1>&2
+  "${@}"
+}
+
+# workaround to avoid deadlocks on signal termination
+trap _cancel SIGINT SIGTERM

tests/test_helper.mk

@@ -0,0 +1,24 @@
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file is part of dobuild.
+# Copyright (c) 2019 Contributors as noted in the AUTHORS file.
+#
+# SPDX-License-Identifier: MPL-2.0
+
+.PHONY: testhelper-default
+testhelper-default:
+
+.PHONY: testhelper-print-%
+testhelper-print-%:
+	@printf '%s\n' $($*)
+
+.PHONY: testhelper-default-silent
+testhelper-default-silent:
+	$(SILENT)true
+
+.PHONY: testhelper-recursive-print-%
+testhelper-recursive-print-%:
+	@$(MAKE) $(MFLAGS) $(addprefix -f,$(MAKEFILE_LIST)) testhelper-print-$* $(MAKEOVERRIDES)

todo.txt

@@ -0,0 +1,29 @@
+handle snapshot version for continue integration
+add target for validation of reproducible build
+extract bootstrap build environment
+finalize dobuild wrapper
+add tests for dobuild wrapper
+fix/ add debugging support
+fix test fixture to enable reuse of builder templates (docker import!?)
+add compose configuration for jenkins-slave - minimal env, cron cleanup service, dind
+check for common security vulnerabilities
+add support for a validatable configuration (groovy-makefile-generator?)
+generalize default makefile builders to allow zero configuration for common use cases
+add package and download caching services to support offline builds (Apt-Cacher-ng?)
+add support for docker based packing (runtime dockerfile)
+add support for docker caching (cache-from)
+add setup support for eclipse cdt
+add setup support for visual studio code
+add example for coverage with cmake
+add example for clang-tidy with cmake
+add example for clang-format with cmake
+add support for podman
+document implemented features
+add support for upload of artifacts
+add support for gradle based build projects
+add support for npm based build projects
+add support for make based build projects
+add support for debian based packaging
+add support for dependency download manager
+tests in kubernetes context
+publish version 1.0.0