Consider a debug_and_release build of a static library.
Set DESTDIR to different values for debug/release.
Let TARGET be the same for debug/release.
Now qmake would generate code in Unix Makefiles like this:
rm mylib.a
ar mylib.a ...objects...
rm debug/mylib.a
mv mylib.a debug/mylib.a
and for release analogous. This clashes when building in parallel.
This patch resolves this conflict by reducing the commands to:
rm debug/mylib.a
ar debug/mylib.a ...objects...
We believe that every ar implementation that's in use for Qt
is able to operate on files in subdirectories.
[ChangeLog][Important Behavior Changes][qmake][Unix] QMAKE_POST_LINK
steps of static libraries are now required to operate on $(TARGET) in
$(DESTDIR) instead of $$OUT_PWD. This matches the Windows backends.
Task-number: QTBUG-48287
Change-Id: I192f488ed74c56bc32862426d9e9d4237d9b8135
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
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