[AC_MSG_ERROR([Could not determine GNOME version. Install GTK3 and its development files (libgtk-3-dev for Debian/Ubuntu based distros and gtk3-devel for RPM based distros).])]
[AC_MSG_ERROR([Could not determine GNOME version. Install GTK3 and its development files (libgtk-3-dev for Debian/Ubuntu based distros and gtk3-devel for RPM based distros).])]