macos_build.sh

#!/bin/zsh

# exit on error
set -e

rsync -ah x64-osx-openrct2/* universal-osx-openrct2
find x64-osx-openrct2/lib -type f -name "*.dylib" | while IFS= read -r lib; do
    if [ -f "$lib" ] && [ ! -L $lib ]; then
      relative_path=$(echo "$lib" | sed 's|^.*/lib/||')
      lib_filename=$(basename "$lib")
      lib_name=$(echo $lib_filename | cut -d'.' -f 1)
      echo "Creating universal (fat) $lib_name"
      for arch in x64 arm64; do
        if [[ "$lib_name" = "libzip" || $lib_name = libicu* ]]; then
          # libzip embeds the full rpath in LC_RPATH
          # they will be different for arm64 and x86_64
          # this will cause issues, and is unnecessary
          echo Fixing $lib_name rpath
          install_name_tool -delete_rpath `pwd`"/vcpkg/packages/${lib_name}_$arch-osx-openrct2/lib" "$arch-osx-openrct2/lib/$lib_filename" || echo No `pwd`"/vcpkg/packages/${lib_name}_$arch-osx-openrct2/lib" in $lib
          install_name_tool -delete_rpath `pwd`"/vcpkg/installed/$arch-osx-openrct2/$arch-osx-openrct2/lib" "$arch-osx-openrct2/lib/$lib_filename" || echo No `pwd`"/vcpkg/installed/$arch-osx-openrct2/$arch-osx-openrct2/lib" in $lib
        fi
        if [[ "$lib_name" = libbrotli* ]]; then
          # Brotli uses full path for LC_ID_DYLIB, which breaks when trying to fix up LC_LOAD_DYLIB in next step.
          # Fix the LC_ID_DYLIB first before fixing up the LC_LOAD_DYLIB.
          echo Fixing $lib_name LC_ID_DYLIB
          install_name_tool -id "@rpath/$lib_filename" "$arch-osx-openrct2/lib/$lib_filename"
        fi
        if otool -L $arch-osx-openrct2/lib/$relative_path | grep -q /Users/runner/work/; then
          echo "Absolute paths found in $arch-osx-openrct2/lib/$relative_path. Load commands:"
          otool -L "$arch-osx-openrct2/lib/$relative_path"
          # Some packages (currently only brotli) have absolute paths in the LC_LOAD_DYLIB command.
          # This is not supported by the universal build and needs to be changes to @rpath.

          install_name_tool -change /Users/runner/work/Dependencies/Dependencies/vcpkg/packages/brotli_$arch-osx-openrct2/lib/libbrotlicommon.1.dylib "@rpath/libbrotlicommon.1.dylib" "$arch-osx-openrct2/lib/$relative_path"
          install_name_tool -change /Users/runner/work/Dependencies/Dependencies/vcpkg/packages/brotli_$arch-osx-openrct2/lib/libbrotlidec.1.dylib "@rpath/libbrotlidec.1.dylib" "$arch-osx-openrct2/lib/$relative_path"
          install_name_tool -change /Users/runner/work/Dependencies/Dependencies/vcpkg/packages/brotli_$arch-osx-openrct2/lib/libbrotlienc.1.dylib "@rpath/libbrotlienc.1.dylib" "$arch-osx-openrct2/lib/$relative_path"

          # Once done, check that it was the only absolute path in the LC_LOAD_DYLIB command.
          if otool -L "$arch-osx-openrct2/lib/$relative_path" | grep -q /Users/runner/work; then
            echo "Absolute paths still exist in $arch-osx-openrct2/lib/$relative_path. Load commands:"
            otool -L $arch-osx-openrct2/lib/$relative_path
            exit 1
          fi
        fi
      done
      lipo -create "x64-osx-openrct2/lib/$relative_path" "arm64-osx-openrct2/lib/$relative_path" -output "universal-osx-openrct2/lib/$relative_path"
    fi
done

(
  cd universal-osx-openrct2 &&
  zip -rXy ../openrct2-libs-v${version}-universal-macos-dylibs.zip * -x '*/.*'
  shasum ../openrct2-libs-v${version}-universal-macos-dylibs.zip
)