Whoops, forgot to set pkg-config

.github/workflows/ci.yml

@@ -97,9 +97,17 @@ jobs:
           - {
             name: macOS Release,
             os: macos-latest,
+            host: x86_64,
             buildtype: release,
             args: -Ddefault_library=static -Dbuild_osx_bundle=true -Dlocal_boost=true -Dvapoursynth=enabled --force-fallback-for=ffms2
           }
+          - {
+            name: macOS Release (arm64),
+            os: macos-latest,
+            host: arm64,
+            buildtype: release,
+            args: --cross-file arm64-apple-macos11.txt -Ddefault_library=static -Dbuild_osx_bundle=true -Dlocal_boost=true -Dvapoursynth=enabled --force-fallback-for=ffms2
+          }
 
     steps:
       - uses: actions/checkout@v3
@@ -131,7 +139,7 @@ jobs:
           Get-Location | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
 
       - name: Install dependencies (MacOS)
-        if: matrix.config.os == 'macos-latest'
+        if: matrix.config.os == 'macos-latest' && matrix.config.host == 'x86_64'
         run: |
           brew update
           brew install luarocks ninja
@@ -140,12 +148,50 @@ jobs:
           brew install libass zlib ffms2 fftw hunspell
           brew install pulseaudio  # NO OpenAL in github CI
 
+      - name: Install dependencies (MacOS arm64)
+        if: matrix.config.os == 'macos-latest' && matrix.config.host == 'arm64'
+        run: |
+          mkdir arm64-homebrew
+          curl -L https://github.com/Homebrew/brew/tarball/master | tar xz --strip 1 -C arm64-homebrew
+
+          for package in pkg-config libass zlib fftw hunspell pulseaudio; do
+            arm64-homebrew/bin/brew fetch --force --bottle-tag=arm64_big_sur ${package}
+            arm64-homebrew/bin/brew install $(arm64-homebrew/bin/brew --cache --bottle-tag=arm64_big_sur ${package})
+          done
+
       - name: Install dependencies (Linux)
         if: startsWith(matrix.config.os, 'ubuntu-')
         run: |
           sudo apt-get update
           sudo apt-get install ninja-build build-essential libx11-dev libwxgtk3.0-gtk3-dev libfreetype6-dev pkg-config libfontconfig1-dev libass-dev libasound2-dev libffms2-dev intltool libboost-all-dev libhunspell-dev libuchardet-dev libpulse-dev libopenal-dev libjansson-dev nasm
 
+      - name: Set up cross file (arm64)
+        if: matrix.config.os == 'macos-latest' && matrix.config.host == 'arm64'
+        run: |
+          cat <<EOT > arm64-apple-macos11.txt
+          [binaries]
+          c = 'clang'
+          cpp = 'clang++'
+          objc = 'clang'
+          objc++ = 'clang++'
+          pkg-config = 'arm64-homebrew/bin/pkg-config'
+
+          [constants]
+          target_flags = ['target', 'arm64-apple-macos11']
+
+          [built-in options]
+          c_args = target_flags
+          cpp_args = target_flags
+          objc_args = target_flags
+          objcpp_args = target_flags
+
+          [host_machine]
+          system = 'darwin'
+          cpu_family = 'aarch64'
+          cpu = 'aarch64'
+          endian = 'little'
+          EOT
+
       - name: Configure
         run: meson setup build ${{ matrix.config.args }} -Dbuildtype=${{ matrix.config.buildtype }}