rocmPackages.llvm: use clang config file instead of deprecated GCC_INSTALL_PREFIX

        rm -rf $out/lib/cmake $out/lib/lib*.a

        mkdir -p $out/lib/clang/${llvmMajorVersion}/lib/linux/

        ln -s $out/lib/linux/libclang_rt.* $out/lib/clang/${llvmMajorVersion}/lib/linux/

        mkdir -p $out/lib/clang/${llvmMajorVersion}/lib/${stdenv.hostPlatform.config}/

        for f in $out/lib/linux/*-${stdenv.hostPlatform.parsed.cpu.name}.*; do

          [ -e "$f" ] || continue

          base="$(basename "$f" | sed 's/-${stdenv.hostPlatform.parsed.cpu.name}\././')"

          ln -sf "$f" "$out/lib/clang/${llvmMajorVersion}/lib/${stdenv.hostPlatform.config}/$base"

        done

        find $out -type f -exec sed -i "s|${cc.out}|$out|g" {} +

        find $out -type f -exec sed -i "s|${cc.dev}|$out|g" {} +

        # Clang config file: redirect resource dir to the sysroot (where compiler-rt

        # lives) and set GCC install prefix for header/library search

        cat > $out/bin/${stdenv.hostPlatform.config}.cfg <<CFG

        -resource-dir=$out/lib/clang/${llvmMajorVersion}

        ${lib.optionalString (!withLibcxx) "--gcc-toolchain=${gcc-prefix}"}

        CFG

        ${lib.getExe rdfind} -makesymlinks true ${

          builtins.concatStringsSep " " (map (x: "${x}/lib") paths)

        } $out/ # create links *within* the sysroot to save space

        cmakeFlags =

          # TODO: Remove in followup, tblgen now works correctly but would rebuild

          (builtins.filter tablegenUsage old.cmakeFlags)

          ++ commonCmakeFlags

          ++ lib.optionals (!withLibcxx) [

            # FIXME: Config file in rocm-toolchain instead of GCC_INSTALL_PREFIX?

            # Expected to be fully removed eventually

            "-DUSE_DEPRECATED_GCC_INSTALL_PREFIX=ON"

            "-DGCC_INSTALL_PREFIX=${gcc-prefix}"

          ];

          ++ commonCmakeFlags;

        preFixup = ''

          ${toString old.preFixup or ""}

          moveToOutput "lib/lib*.a" "$dev"