macports-libcxx does not install cxxabi.h

[barracuda156]

LLVM headers have cxxabi.h: /opt/local/libexec/llvm-11/include/c++/v1/cxxabi.h However, legacysupport uses macports-libcxx headers, which do not contain this one for some reason.

Is this intended?

[barracuda156]

In result folly fails to build, for example: #69147

[kencu (Ken)]

well ... isn't that odd.

After depending on clang-11 to be there, the macports-libcxx port simply does this:

copy  ${prefix}/libexec/llvm-${clangversion}/lib/c++/v1 ${destroot}${prefix}/include/libcxx/

could you do a port provides /opt/local/libexec/llvm-11/include/c++/v1/cxxabi.h to see which port is giving us this file? Maybe it is coming from something other than clang-11?

[kencu (Ken)]

Oh, hold the phone, we have two different directories to look at here, this one:

/opt/local/libexec/llvm-11/include/c++/v1

and this one:

/opt/local/libexec/llvm-11/lib/c++/v1

better see what's up with that exactly.

[barracuda156]

Replying to kencu:

/opt/local/libexec/llvm-11/include/c++/v1/cxxabi.h is provided by: clang-11

[barracuda156]

BTW, I manually copied two headers of cxxabi into macports-libcxx include folder, and had folly built successfully on 10.8.5.

[barracuda156]

On a side note, I guess I have to move those headers in libcxx-powerpc port, so that they match expected location of llvm ones.

UPD. Ah, nah, it actually installs those headers. Wonder why macports-libcxx does not.