Merge pull request #308504 from Liamolucko/circt-darwin

{ stdenv

{ lib

, stdenv

, cmake

, ninja

, circt

  outputs = [ "out" "lib" "dev" ];

  # Get rid of ${extra_libdir} (which ends up containing a path to circt-llvm.dev

  # in circt) so that we only have to remove the one fixed rpath.

  postPatch = lib.optionalString stdenv.isDarwin ''

    substituteInPlace llvm/llvm/cmake/modules/AddLLVM.cmake \

      --replace-fail 'set(_install_rpath "@loader_path/../lib''${LLVM_LIBDIR_SUFFIX}" ''${extra_libdir})' \

        'set(_install_rpath "@loader_path/../lib''${LLVM_LIBDIR_SUFFIX}")'

  '';

  postInstall = ''

    # move llvm-config to $dev to resolve a circular dependency

    moveToOutput "bin/llvm-config*" "$dev"

      --replace "$out/bin/llvm-config" "$dev/bin/llvm-config" # patch path for llvm-config

  '';

  # Replace all references to @rpath with absolute paths and remove the rpaths.

  #

  # This is different from what the regular LLVM package does, which is to make

  # everything absolute from the start: however, that doesn't work for us because

  # we have `-DBUILD_SHARED_LIBS=ON`, meaning that many more things are

  # dynamically rather than statically linked. This includes TableGen, which then

  # fails to run halfway through the build because it tries to reference $lib when

  # it hasn't been populated yet.

  #

  # Inspired by fixDarwinDylibNames.

  postFixup = lib.optionalString stdenv.isDarwin ''

    local flags=(-delete_rpath @loader_path/../lib)

    for file in "$lib"/lib/*.dylib; do

      flags+=(-change @rpath/"$(basename "$file")" "$file")

    done

    for file in "$out"/bin/* "$lib"/lib/*.dylib; do

      if [ -L "$file" ]; then continue; fi

      echo "$file: fixing dylib references"

      # note that -id does nothing on binaries

      install_name_tool -id "$file" "''${flags[@]}" "$file"

    done

  '';

  # circt only use the mlir part of llvm, occasionally there are some unrelated failure from llvm,

  # disable the llvm check, but keep the circt check enabled.

  doCheck = false;

  outputs = [ "out" "lib" "dev" ];

  # Copy circt-llvm's postFixup stage so that it can make all our dylib references

  # absolute as well.

  #

  # We don't need `postPatch` because circt seems to be automatically inheriting

  # the config somehow, presumably via. `-DMLIR_DIR`.

  postFixup = circt-llvm.postFixup;

  postInstall = ''

    moveToOutput lib "$lib"

  '';