Sebastian Holtermann f945c3e755 Tests: Extend MakeClean test to cover subdirectories without targets ...

This adds a subdirectory to the MakeClean test, in which files are added to
the `ADDITIONAL_CLEAN_FILES` directory property, but which holds no targets.

2019-05-18 12:27:29 +02:00

..

ToClean

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check_clean.c.in

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CMakeLists.txt

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