Cross-platform release (#61)

* cross-platform release

* fix style

.github/workflows/release.yml

@@ -6,23 +6,133 @@ on:
       - 'v*'
 
 jobs:
-  check:
-    name: Check
+  release:
+    name: Release
+    runs-on: ${{ matrix.os }}
+    env:
+      # For some builds, we use cross to test on 32-bit and big-endian
+      # systems.
+      CARGO: cargo
+      # When CARGO is set to CROSS, this is set to `--target matrix.target`.
+      TARGET_FLAGS: ""
+      # When CARGO is set to CROSS, TARGET_DIR includes matrix.target.
+      TARGET_DIR: ./target
+      # Emit backtraces on panics.
+      RUST_BACKTRACE: 1
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
-    runs-on: ${{ matrix.os }}
-    steps:
-      - uses: actions/checkout@v2
-      - name: Cargo check
-        uses: actions-rs/cargo@v1
-        with:
-          command: check
+        build: [linux, linux-arm, macos, win-msvc, win-gnu, win32-msvc]
+        include:
+        - build: linux
+          os: ubuntu-18.04
+          rust: nightly
+          target: x86_64-unknown-linux-musl
+        - build: linux-arm
+          os: ubuntu-18.04
+          rust: nightly
+          target: arm-unknown-linux-gnueabihf
+        - build: macos
+          os: macos-latest
+          rust: nightly
+          target: x86_64-apple-darwin
+        - build: win-msvc
+          os: windows-2019
+          rust: nightly
+          target: x86_64-pc-windows-msvc
+        - build: win-gnu
+          os: windows-2019
+          rust: nightly-x86_64-gnu
+          target: x86_64-pc-windows-gnu
+        - build: win32-msvc
+          os: windows-2019
+          rust: nightly
+          target: i686-pc-windows-msvc
 
-  release:
+    steps:
+    - name: Get the release version from the tag
+      shell: bash
+      if: env.GOBANG_VERSION == ''
+      run: |
+        # Apparently, this is the right way to get a tag name. Really?
+        #
+        # See: https://github.community/t5/GitHub-Actions/How-to-get-just-the-tag-name/m-p/32167/highlight/true#M1027
+        echo "GOBANG_VERSION=${GITHUB_REF#refs/tags/}" >> $GITHUB_ENV
+        echo "version is: ${{ env.GOBANG_VERSION }}"
+
+    - name: Checkout repository
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 1
+
+    - name: Install Rust
+      uses: actions-rs/toolchain@v1
+      with:
+        toolchain: ${{ matrix.rust }}
+        profile: minimal
+        override: true
+        target: ${{ matrix.target }}
+
+    - name: Use Cross
+      shell: bash
+      run: |
+        cargo install cross
+        echo "CARGO=cross" >> $GITHUB_ENV
+        echo "TARGET_FLAGS=--target ${{ matrix.target }}" >> $GITHUB_ENV
+        echo "TARGET_DIR=./target/${{ matrix.target }}" >> $GITHUB_ENV
+
+    - name: Show command used for Cargo
+      run: |
+        echo "cargo command is: ${{ env.CARGO }}"
+        echo "target flag is: ${{ env.TARGET_FLAGS }}"
+        echo "target dir is: ${{ env.TARGET_DIR }}"
+
+    - name: Build release binary
+      run: ${{ env.CARGO }} build --verbose --release ${{ env.TARGET_FLAGS }}
+
+    - name: Strip release binary (linux and macos)
+      if: matrix.build == 'linux' || matrix.build == 'macos'
+      run: strip "target/${{ matrix.target }}/release/gobang"
+
+    - name: Strip release binary (arm)
+      if: matrix.build == 'linux-arm'
+      run: |
+        docker run --rm -v \
+          "$PWD/target:/target:Z" \
+          rustembedded/cross:arm-unknown-linux-gnueabihf \
+          arm-linux-gnueabihf-strip \
+          /target/arm-unknown-linux-gnueabihf/release/gobang
+
+    - name: Build archive
+      shell: bash
+      run: |
+        staging="gobang-${{ env.GOBANG_VERSION }}-${{ matrix.target }}"
+        mkdir -p "$staging"/{complete,doc}
+
+        cp {README.md,COPYING,UNLICENSE,LICENSE-MIT} "$staging/"
+
+        if [ "${{ matrix.os }}" = "windows-2019" ]; then
+          cp "target/${{ matrix.target }}/release/gobang.exe" "$staging/"
+          7z a "$staging.zip" "$staging"
+          echo "ASSET=$staging.zip" >> $GITHUB_ENV
+        else
+          # The man page is only generated on Unix systems. ¯\_(ツ)_/¯
+          cp "target/${{ matrix.target }}/release/gobang" "$staging/"
+          tar czf "$staging.tar.gz" "$staging"
+          echo "ASSET=$staging.tar.gz" >> $GITHUB_ENV
+        fi
+
+    - name: Publish
+      uses: softprops/action-gh-release@v1
+      if: steps.vars.outputs.DEPLOY
+      with:
+        files: ${{ env.ASSET }}
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  cargo-publish:
     name: Cargo publish
     runs-on: ubuntu-latest
-    needs: check
+    needs: release
     steps:
       - uses: actions/checkout@v1
       - run: cargo login ${CRATES_IO_TOKEN}