[clang-include-cleaner][Feature Request] Add an option to wrap extern "C" for certain headers

[bc-lee]

While clang-include-cleaner works fine for me in most cases, some C++-hostile projects (like ffmpeg) require their headers to be wrapped with extern "C" to avoid C++ name mangling. When I run clang-include-cleaner on projects that use such headers, I have to manually wrap them with extern "C" afterward. It would be helpful if clang-include-cleaner could handle this automatically.

For example, adding an option like --wrap-extern-c would allow clang-include-cleaner to wrap specified headers, and it could be used like this:

$ /path/to/bin/clang-include-cleaner -p cmake-build-debug --edit --wrap-extern-c=libavcodec,libavformat,libavutil ...

This option would wrap all headers from libavcodec, libavformat, and libavutil with extern "C".

Thanks for reading!

[llvmbot]

@llvm/issue-subscribers-clang-include-cleaner

Author: Byoungchan Lee (bc-lee)

While clang-include-cleaner works fine for me in most cases, some C++-hostile projects (like ffmpeg) require their headers to be wrapped with `extern "C"` to avoid C++ name mangling. When I run clang-include-cleaner on projects that use such headers, I have to manually wrap them with `extern "C"` afterward. It would be helpful if clang-include-cleaner could handle this automatically.

For example, adding an option like --wrap-extern-c would allow clang-include-cleaner to wrap specified headers, and it could be used like this:

$ /path/to/bin/clang-include-cleaner -p cmake-build-debug --edit --wrap-extern-c=libavcodec,libavformat,libavutil ...

This option would wrap all headers from libavcodec, libavformat, and libavutil with extern "C".

Thanks for reading!