[ros-diffs] [janderwald] 27303: - add option to macro to specify for which backend this macro is intended If the macro is for all backends, then you dont need to set this option However, if this macro is for gcc only then put an option, i.e.: <define name="__USE_W32API" backend="mingw" /> for msvc backend set backend="msvc" -Currently filtering is only implemented for msvc backend