chore: build linux HTTP binaries for multiple architectures

.github/workflows/http.yml

@@ -1,12 +1,33 @@
-name: Linux-amd64 build executable
+name: Linux build HTTP executable
 on:
   push:
   workflow_call:
   release:
-    types: [published]
+    types: [ published ]
 jobs:
   build:
     runs-on: ubuntu-20.04
+
+    strategy:
+      matrix:
+        build: [
+          {
+            arch: x86_64,
+            breez_arch: linux-amd64,
+            alby_arch: x86_64-unknown-linux-gnu,
+          },
+          {
+            arch: armv6,
+            breez_arch: "",
+            alby_arch: arm-unknown-linux-gnueabihf,
+          },
+          {
+            arch: aarch64,
+            breez_arch: linux-aarch64,
+            alby_arch: aarch64-unknown-linux-gnu,
+          }
+        ]
+
     steps:
       - uses: actions/checkout@v4
         name: Check out code
@@ -44,36 +65,60 @@ jobs:
 
       - name: Create build directory
         run: |
-          mkdir -p ./build/bin/albyhub-${{runner.os}}-x86_64/lib
+          mkdir -p ./build/bin/albyhub-${{runner.os}}-${{matrix.build.arch}}/lib
+
+      - name: Install ARM6 cross-compiler
+        if: matrix.build.arch == 'armv6'
+        run: |
+          wget -nv https://github.com/getAlby/gcc-arm-linux-gnueabihf/releases/download/v1.0.0/armv6-unknown-linux-gnueabihf.tar.bz2
+          tar -xf armv6-unknown-linux-gnueabihf.tar.bz2
+          echo "GOOS=linux" >> $GITHUB_ENV
+          echo "GOARCH=arm" >> $GITHUB_ENV
+          echo "GOARM=6" >> $GITHUB_ENV
+          echo "CC=$GITHUB_WORKSPACE/armv6-unknown-linux-gnueabihf/bin/armv6-unknown-linux-gnueabihf-gcc" >> $GITHUB_ENV
+          echo "GOTAGS=skip_breez,netgo" >> $GITHUB_ENV
+
+      - name: Install ARM64 cross-compiler
+        if: matrix.build.arch == 'aarch64'
+        run: |
+          sudo apt-get install -y gcc-aarch64-linux-gnu
+          echo "GOOS=linux" >> $GITHUB_ENV
+          echo "GOARCH=arm64" >> $GITHUB_ENV
+          echo "CC=aarch64-linux-gnu-gcc" >> $GITHUB_ENV
+          echo "GOTAGS=netgo" >> $GITHUB_ENV
 
-      - name: Build Binary for linux amd64
-        run: CGO_ENABLED=1 go build -o build/bin/albyhub-${{runner.os}}-x86_64/bin/albyhub-x86_64 cmd/http/main.go
+      - name: Build Binary for linux
+        env:
+          CGO_ENABLED: 1
+        run: go build -tags ${{env.GOTAGS}} -o build/bin/albyhub-${{runner.os}}-${{matrix.build.arch}}/bin/albyhub-${{matrix.build.arch}} cmd/http/main.go
 
       - name: Copy shared libraries to the output directory
         run: |
-          mkdir -p ./build/bin/albyhub-${{runner.os}}-x86_64/lib
-          cp `go list -m -f "{{.Dir}}" github.com/breez/breez-sdk-go`/breez_sdk/lib/linux-amd64/libbreez_sdk_bindings.so ./build/bin/albyhub-${{runner.os}}-x86_64/lib/
-          cp `go list -m -f "{{.Dir}}" github.com/getAlby/glalby-go`/glalby/x86_64-unknown-linux-gnu/libglalby_bindings.so ./build/bin/albyhub-${{runner.os}}-x86_64/lib/
-          cp `go list -m -f "{{.Dir}}" github.com/getAlby/ldk-node-go`/ldk_node/x86_64-unknown-linux-gnu/libldk_node.so ./build/bin/albyhub-${{runner.os}}-x86_64/lib/
+          mkdir -p ./build/bin/albyhub-${{runner.os}}-${{matrix.build.arch}}/lib
+          if [ "${{matrix.build.breez_arch}}" != "" ]; then
+            cp `go list -m -f "{{.Dir}}" github.com/breez/breez-sdk-go`/breez_sdk/lib/${{matrix.build.breez_arch}}/libbreez_sdk_bindings.so ./build/bin/albyhub-${{runner.os}}-${{matrix.build.arch}}/lib/
+          fi
+          cp `go list -m -f "{{.Dir}}" github.com/getAlby/glalby-go`/glalby/${{matrix.build.alby_arch}}/libglalby_bindings.so ./build/bin/albyhub-${{runner.os}}-${{matrix.build.arch}}/lib/
+          cp `go list -m -f "{{.Dir}}" github.com/getAlby/ldk-node-go`/ldk_node/${{matrix.build.alby_arch}}/libldk_node.so ./build/bin/albyhub-${{runner.os}}-${{matrix.build.arch}}/lib/
         shell: bash
 
       - name: Patch executable RPATH
         run: |
-          patchelf --force-rpath --set-rpath '$ORIGIN/../lib' ./build/bin/albyhub-${{runner.os}}-x86_64/bin/albyhub-x86_64
+          patchelf --force-rpath --set-rpath '$ORIGIN/../lib' ./build/bin/albyhub-${{runner.os}}-${{matrix.build.arch}}/bin/albyhub-${{matrix.build.arch}}
 
       - name: Add Linux perms
         run: |
-          chmod +x build/bin/albyhub-${{runner.os}}-x86_64/bin/albyhub-x86_64
+          chmod +x build/bin/albyhub-${{runner.os}}-${{matrix.build.arch}}/bin/albyhub-${{matrix.build.arch}}
         shell: bash
 
       - name: Make output tar archive to keep file permissions
         run: |
           mkdir -p ./build/out
-          tar czf ./build/out/albyhub-${{runner.os}}-x86_64.tar.gz -C ./build/bin/albyhub-${{runner.os}}-x86_64 .
+          tar czf ./build/out/albyhub-${{runner.os}}-${{matrix.build.arch}}.tar.gz -C ./build/bin/albyhub-${{runner.os}}-${{matrix.build.arch}} .
 
       - uses: actions/upload-artifact@v4
         with:
-          name: albyhub-${{runner.os}}-x86_64.tar.gz
+          name: albyhub-${{runner.os}}-${{matrix.build.arch}}.tar.gz
           path: |
-            ./build/out/albyhub-${{runner.os}}-x86_64.tar.gz
+            ./build/out/albyhub-${{runner.os}}-${{matrix.build.arch}}.tar.gz
           if-no-files-found: error