Tests: Fix GTK2Components.gtkmm test with sigc++ >= 2.5.1
FindGTK2 adds compile features to GTK2::sigc++ so that clients will compile as C++11 or above. However, our test case covers using just the library list variables instead of the imported targets. Fix this case by propagating the compile features manually.
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@ -12,3 +12,8 @@ target_link_libraries(gtkmm-target GTK2::gtkmm)
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add_executable(gtkmm-all-libs WIN32 main.cpp helloworld.cpp helloworld.h)
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target_link_libraries(gtkmm-all-libs ${GTK2_LIBRARIES})
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target_include_directories(gtkmm-all-libs PRIVATE ${GTK2_INCLUDE_DIRS})
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# Linking via the library variables does not cause compile feature
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# requirements to propagate. Do it manually for purposes of this test.
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get_property(features TARGET GTK2::sigc++ PROPERTY INTERFACE_COMPILE_FEATURES)
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set_property(TARGET gtkmm-all-libs PROPERTY COMPILE_FEATURES ${features})
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