It has been reported that Gentoo is quite minimalistic and adheres strictly to Qt5’s definition of optional modules. Because I once used the Qt5 essential modules as the minimum requirement, the Gentoo maintainers had to always patch out makefiles This patch removes this restriction. But instead simply removing, I added an option “essential” to the ‘CHECK_PACKAGE_FOUND’ macro. When an essential module is omitted, the macro generates a warning that maybe not all tests are working. This way, we don’t have to check all tests at once for missing imports. Update: application_test now correctly moved. Explicit warning for essential modules. Corrections, tested with QtCore, only. Task-number: PYSIDE-502 Change-Id: I6e63c74c80173e0f4bcb5100458b37963f71e4f9 Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>