True if CMAKE_<LANG>_LINKER_PREFERENCE propagates across targets.
This is used when CMake selects a linker language for a target. Languages compiled directly into the target are always considered. A language compiled into static libraries linked by the target is considered if this variable is true.
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https://cmake.org/cmake/help/v3.19/variable/CMAKE_LANG_LINKER_PREFERENCE_PROPAGATES.html