GitLab

I have a managed C++ target AAA that depends on a native C++ static library BBB and another managed C++ target CCC. In AAA, I must use CCC as friend:

#using "CCC.dll" as_friend

For this to work, I need to provide CCC.dll's folder with /AI compiler option:

target_compile_options(AAA PRIVATE /AI"${CMAKE_BINARY_DIR}/bin")

In the generated project file AAA.vcxproj, I expect to see the <AdditionalUsingDirectories> XML element that contains the expanded value of "${CMAKE_BINARY_DIR}/bin". And I do see it, but then in the same <ClCompile> XML element there is the second <AdditionalUsingDirectories> XML element that contains the library directory of BBB. This second <AdditionalUsingDirectories> overwrites the folder that I set with /AI compiler option. The #using statement results in compilation errors, and there seems to be no way to fix the problem from my CMakeLists.txt.

The expected behavior would be to generate one <AdditionalUsingDirectories> XML element that merges paths coming from my /AI option and paths coming from dependencies.