Merge pull request #316334 from trofi/gcc-libgcc-musl-strip

      rm -f $out/lib/libgcc_s.so*

    ''

    # TODO(amjoseph): remove the `libgcc_s.so` symlinks below and replace them

    # with a `-L${gccForLibs.libgcc}/lib` in cc-wrapper's

    # `$out/nix-support/cc-flags`.  See also:

    # - https://github.com/NixOS/nixpkgs/pull/209870#discussion_r1130614895

    # - https://github.com/NixOS/nixpkgs/pull/209870#discussion_r1130635982

    # - https://github.com/NixOS/nixpkgs/commit/404155c6acfa59456aebe6156b22fe385e7dec6f

    #

    # move `libgcc_s.so` into its own output, `$libgcc`

    # We maintain $libgcc/lib/$target/ structure to make sure target

    # strip runs over libgcc_s.so and remove debug references to headers:

    #   https://github.com/NixOS/nixpkgs/issues/316114

    + lib.optionalString enableLibGccOutput (''

      # move libgcc from lib to its own output (libgcc)

      mkdir -p $libgcc/lib

      mv    $lib/${targetPlatformSlash}lib/libgcc_s.so      $libgcc/lib/

      mv    $lib/${targetPlatformSlash}lib/libgcc_s.so.${libgcc_s-version-major}    $libgcc/lib/

      ln -s $libgcc/lib/libgcc_s.so   $lib/${targetPlatformSlash}lib/

      ln -s $libgcc/lib/libgcc_s.so.${libgcc_s-version-major} $lib/${targetPlatformSlash}lib/

      mkdir -p $libgcc/${targetPlatformSlash}lib

      mv    $lib/${targetPlatformSlash}lib/libgcc_s.so      $libgcc/${targetPlatformSlash}lib/

      mv    $lib/${targetPlatformSlash}lib/libgcc_s.so.${libgcc_s-version-major}    $libgcc/${targetPlatformSlash}lib/

      ln -s $libgcc/${targetPlatformSlash}lib/libgcc_s.so   $lib/${targetPlatformSlash}lib/

      ln -s $libgcc/${targetPlatformSlash}lib/libgcc_s.so.${libgcc_s-version-major} $lib/${targetPlatformSlash}lib/

    ''

    + lib.optionalString (targetPlatformSlash != "") ''

      ln -s ${targetPlatformSlash}lib $libgcc/lib

    ''

    #

    # Nixpkgs ordinarily turns dynamic linking into pseudo-static linking: