CI: Add workflow file to build the compiler

.github/workflows/main.yml

@@ -0,0 +1,86 @@
+name: Build compiler for linux and mac
+
+on: [pull_request, push, workflow_dispatch]
+
+jobs:
+  build:
+    name: Build zig
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        include:
+        - target: x86_64-linux-gnu
+          os: ubuntu-latest
+        - target: aarch64-linux-gnu
+          os: ubuntu-latest
+        - target: x86_64-macos-none
+          os: macos-latest
+        - target: aarch64-macos-none
+          os: macos-latest
+      fail-fast: false
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        submodules: true
+    - name: Install coreutils
+      run: |
+        brew update && brew install coreutils
+      if: matrix.os == 'macos-latest'
+      shell: bash
+    - name: Build
+      run: ./build ${{ matrix.target }} baseline
+      shell: bash
+    - name: Create tarball
+      run: tar -C out -cjf zig-${{ matrix.target }}.tar.bz2 zig-${{ matrix.target }}-baseline
+      shell: bash
+    - name: Upload ${{ matrix.target }} tarball
+      uses: actions/upload-artifact@v3
+      with:
+        name: zig-${{ matrix.target }}.tar.bz2
+        path: zig-${{ matrix.target }}.tar.bz2
+
+  create_release:
+    name: Create release
+    needs: build
+    runs-on: ubuntu-latest
+    if: ${{ startsWith(github.ref, 'refs/tags/solana-v') }}
+    outputs:
+      upload_url: ${{ steps.create_release.outputs.upload_url }}
+    steps:
+    - name: Create Release
+      id: create_release
+      uses: actions/create-release@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        tag_name: ${{ github.ref }}
+        release_name: Release ${{ github.ref }}
+        draft: false
+        prerelease: false
+
+  upload_release:
+    name: Upload Release Assets
+    needs: create_release
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        include:
+        - target: x86_64-linux-gnu
+        - target: aarch64-linux-gnu
+        - target: x86_64-macos-none
+        - target: aarch64-macos-none
+    if: ${{ startsWith(github.ref, 'refs/tags/solana-v') }}
+    steps:
+    - name: Download tarball
+      uses: actions/download-artifact@v3
+      with:
+        name: zig-${{ matrix.target }}.tar.bz2
+    - name: Release tarball
+      uses: actions/upload-release-asset@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ needs.create_release.outputs.upload_url }}
+        asset_path: zig-${{ matrix.target }}.tar.bz2
+        asset_name: zig-${{ matrix.target }}.tar.bz2
+        asset_content_type: application/zip