tst_qlibrary depends on a library (targets mylib and mylib2) to be
built. They create a library with the same name, in two versions.
This is done in order to test versioned library loading.
However, those two libraries were fighting over the creation of
"libmylib.so". In a fresh build, mylib2 wins, as intended. But after
a rebuild, mylib won, which led to failing unit tests.
This patch changes the situation. With this change, mylib no longer
tries to create "libmylib.so". Thus no fighting and no problem.
Pick-to: 6.0
Change-Id: Id89baa5503c9f078a8737ff0b8616edf09044f72
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>