Add test support for multiplatform builds

.github/workflows/main.yml

@@ -11,12 +11,16 @@ jobs:
   build:
     name: Build
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        goos: [linux, darwin]
+        goarch: [amd64, arm64]
     steps:
 
     - name: Set up Go 1.x
       uses: actions/setup-go@v2
       with:
-        go-version: ^1.14
+        go-version: ^1.16
       id: go
 
     - name: Check out code into the Go module directory
@@ -30,10 +34,8 @@ jobs:
 
     - name: Build
       run: |
-        export CGO_ENABLED=0
+        export CGO_ENABLED=0 GOOS=${{ matrix.goos }} GOARCH=${{ matrix.goarch }}
         go build -ldflags "-s -w" \
                  -trimpath        \
-                 -o ./hashcolor   \
+                 -o ./hashcolor-${{ matrix.goos }}-${{ matrix.goarch }}   \
            ./cmd/hashcolor/main.go
-
-

.github/workflows/release.yml

@@ -1,82 +1,103 @@
-name: Release
+name: Create a draft Release
 
 on:
   push:
     tags: [ "v*" ]
 
 jobs:
-  build:
-    name: Build Release
+  create:
+    name: Create Release
     runs-on: ubuntu-latest
+    outputs:
+      upload_url: ${{ steps.create_release.outputs.upload_url }}
     steps:
-    - name: Set up Go 1.x
-      uses: actions/setup-go@v2
+    - name: Create Release
+      id: create_release
+      uses: actions/create-release@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       with:
-        go-version: ^1.14
-      id: go
+        tag_name: ${{ github.ref }}
+        release_name: Hashcolor ${{ github.ref }}
+        draft: true
+        prerelease: false
+
+  build:
+    name: Build Release binaries
+    runs-on: ubuntu-latest
+    needs: create
+    strategy:
+      matrix:
+        goos: [linux, darwin]
+        goarch: [amd64, arm64]
 
+    steps:
     - name: Check out code into the Go module directory
       uses: actions/checkout@v2
 
+    - name: Get the version
+      id: get_version
+      run: echo ::set-output name=VERSION::${GITHUB_REF/refs\/tags\//}
+
+    - name: Set up Go 1.x
+      id: go
+      uses: actions/setup-go@v2
+      with:
+        go-version: ^1.16
+
     - name: Get dependencies
       run: |
         go get -v -t -d ./...
         go mod download
         go mod verify
 
-    - name: Get the version
-      id: get_version
-      run: echo ::set-output name=VERSION::${GITHUB_REF/refs\/tags\//}
-
-    - name: Build
+    - name: Build Golang binaries (${{ matrix.goos }}/${{ matrix.goarch }})
+      id: build_binary
+      env:
+        CGO_ENABLED: 0
+        GOOS: "${{ matrix.goos }}"
+        GOARCH: "${{ matrix.goarch }}"
       run: |
-        export CGO_ENABLED=0
         go build -ldflags "-s -w -X main.Version=${{ steps.get_version.outputs.VERSION }}" \
                  -trimpath -o ./hashcolor \
            ./cmd/hashcolor/main.go
 
-    - name: Package
+    - name: Package (${{ matrix.goos }}/${{ matrix.goarch }})
+      env:
+        CGO_ENABLED: 0
+        GOOS: "${{ matrix.goos }}"
+        GOARCH: "${{ matrix.goarch }}"
+        VERSION: "${{ steps.get_version.outputs.VERSION }}"
       run: |
-        mkdir -p "./build/hashcolor-${{ steps.get_version.outputs.VERSION }}"
-        cp -av --target-directory="./build/hashcolor-${{ steps.get_version.outputs.VERSION }}" \
+        mkdir -p "./build/hashcolor-${VERSION}"
+        cp -av --target-directory="./build/hashcolor-${VERSION}" \
             ./examples ./hashcolor ./LICENSE ./README.md
-        cd "./build/hashcolor-${{ steps.get_version.outputs.VERSION }}"
+        cd "./build/hashcolor-${VERSION}"
         find . -type f -exec sha256sum "{}" + > checksums.lst
         cd ..
-        tar cvzf "./hashcolor-${{ steps.get_version.outputs.VERSION }}-linux-x86_64.tar.gz" \
-                "./hashcolor-${{ steps.get_version.outputs.VERSION }}"
-        sha256sum "./hashcolor-${{ steps.get_version.outputs.VERSION }}-linux-x86_64.tar.gz" > \
-                  "./hashcolor-${{ steps.get_version.outputs.VERSION }}-linux-x86_64.tar.gz.sha256"
-
-    - name: Create Release
-      id: create_release
-      uses: actions/create-release@v1
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      with:
-        tag_name: ${{ github.ref }}
-        release_name: Hashcolor ${{ github.ref }}
-        draft: true
-        prerelease: false
+        tar cvzf "./hashcolor-${VERSION}-${GOOS}-${GOARCH}.tar.gz" \
+                "./hashcolor-${VERSION}"
+        sha256sum "./hashcolor-${VERSION}-${GOOS}-${GOARCH}.tar.gz" > \
+                  "./hashcolor-${VERSION}-${GOOS}-${GOARCH}.tar.gz.sha256"
 
-    - name: Upload Release Tarball
+    - name: Upload Release Tarball (${{ matrix.goos }}/${{ matrix.goarch }})
       id: upload-release-tarball
       uses: actions/upload-release-asset@v1
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       with:
-        upload_url: ${{ steps.create_release.outputs.upload_url }}
-        asset_path: ./build/hashcolor-${{ steps.get_version.outputs.VERSION }}-linux-x86_64.tar.gz
-        asset_name: hashcolor-${{ steps.get_version.outputs.VERSION }}-linux-x86_64.tar.gz
+        upload_url: ${{ needs.create.outputs.upload_url }}
+        asset_path: ./build/hashcolor-${{ steps.get_version.outputs.VERSION }}-${{ matrix.goos }}-${{ matrix.goarch }}.tar.gz
+        asset_name: hashcolor-${{ steps.get_version.outputs.VERSION }}-${{ matrix.goos }}-${{ matrix.goarch }}.tar.gz
         asset_content_type: application/gzip
 
-    - name: Upload Release Digest
+    - name: Upload Release Digest (${{ matrix.goos }}/${{ matrix.goarch }})
       id: upload-release-digest
       uses: actions/upload-release-asset@v1
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       with:
-        upload_url: ${{ steps.create_release.outputs.upload_url }}
-        asset_path: ./build/hashcolor-${{ steps.get_version.outputs.VERSION }}-linux-x86_64.tar.gz.sha256
-        asset_name: hashcolor-${{ steps.get_version.outputs.VERSION }}-linux-x86_64.tar.gz.sha256
+        upload_url: ${{ needs.create.outputs.upload_url }}
+        asset_path: ./build/hashcolor-${{ steps.get_version.outputs.VERSION }}-${{ matrix.goos }}-${{ matrix.goarch }}.tar.gz.sha256
+        asset_name: hashcolor-${{ steps.get_version.outputs.VERSION }}-${{ matrix.goos }}-${{ matrix.goarch }}.tar.gz.sha256
         asset_content_type: text/plain