build by musl instead of glibc

Author: alireza0

.github/workflows/release.yml

@@ -8,6 +8,7 @@ on:
     branches:
       - main
     paths:
+      - '.github/workflows/release.yml'
       - 'frontend/**'
       - '**.sh'
       - '**.go'
@@ -27,7 +28,7 @@ jobs:
           - armv5
           - 386
           - s390x
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
         uses: actions/checkout@v5.0.0
@@ -45,23 +46,6 @@ jobs:
         with:
           node-version: '22'
           registry-url: 'https://registry.npmjs.org'
-          
-      - name: Install dependencies
-        run: |
-          sudo apt-get update
-          if [ "${{ matrix.platform }}" == "arm64" ]; then
-            sudo apt install gcc-aarch64-linux-gnu
-          elif [ "${{ matrix.platform }}" == "armv7" ]; then
-            sudo apt install gcc-arm-linux-gnueabihf
-          elif [ "${{ matrix.platform }}" == "armv6" ]; then
-            sudo apt install gcc-arm-linux-gnueabihf
-          elif [ "${{ matrix.platform }}" == "armv5" ]; then
-            sudo apt install gcc-arm-linux-gnueabi
-          elif [ "${{ matrix.platform }}" == "386" ]; then
-            sudo apt install gcc-i686-linux-gnu
-          elif [ "${{ matrix.platform }}" == "s390x" ]; then
-            sudo apt install gcc-s390x-linux-gnu
-          fi
 
       - name: Build frontend
         run: |
@@ -77,31 +61,34 @@ jobs:
           export CGO_ENABLED=1
           export GOOS=linux
           export GOARCH=${{ matrix.platform }}
-          if [ "${{ matrix.platform }}" == "arm64" ]; then
-            export GOARCH=arm64
-            export CC=aarch64-linux-gnu-gcc
-          elif [ "${{ matrix.platform }}" == "armv7" ]; then
-            export GOARCH=arm
-            export GOARM=7
-            export CC=arm-linux-gnueabihf-gcc
-          elif [ "${{ matrix.platform }}" == "armv6" ]; then
-            export GOARCH=arm
-            export GOARM=6
-            export CC=arm-linux-gnueabihf-gcc
-          elif [ "${{ matrix.platform }}" == "armv5" ]; then
-            export GOARCH=arm
-            export GOARM=5
-            export CC=arm-linux-gnueabi-gcc
-          elif [ "${{ matrix.platform }}" == "386" ]; then
-            export GOARCH=386
-            export CC=i686-linux-gnu-gcc
-          elif [ "${{ matrix.platform }}" == "s390x" ]; then
-            export GOARCH=s390x
-            export CC=s390x-linux-gnu-gcc
-          fi
+          # Use Bootlin prebuilt cross-toolchains (musl 1.2.5 in stable series)
+          case "${{ matrix.platform }}" in
+            amd64) BOOTLIN_ARCH="x86-64" ;;
+            arm64) BOOTLIN_ARCH="aarch64" ;;
+            armv7) BOOTLIN_ARCH="armv7-eabihf"; export GOARCH=arm GOARM=7 ;;
+            armv6) BOOTLIN_ARCH="armv6-eabihf"; export GOARCH=arm GOARM=6 ;;
+            armv5) BOOTLIN_ARCH="armv5-eabi"; export GOARCH=arm GOARM=5 ;;
+            386) BOOTLIN_ARCH="x86-i686" ;;
+            s390x) BOOTLIN_ARCH="s390x-z13" ;;
+          esac
+          echo "Resolving Bootlin musl toolchain for arch=$BOOTLIN_ARCH (platform=${{ matrix.platform }})"
+          TARBALL_BASE="https://toolchains.bootlin.com/downloads/releases/toolchains/$BOOTLIN_ARCH/tarballs/"
+          TARBALL_URL=$(curl -fsSL "$TARBALL_BASE" | grep -oE "${BOOTLIN_ARCH}--musl--stable-[^\"]+\\.tar\\.xz" | sort -r | head -n1)
+          [ -z "$TARBALL_URL" ] && { echo "Failed to locate Bootlin musl toolchain for arch=$BOOTLIN_ARCH" >&2; exit 1; }
+          echo "Downloading: $TARBALL_URL"
+          cd /tmp
+          curl -fL -sS -o "$(basename "$TARBALL_URL")" "$TARBALL_BASE/$TARBALL_URL"
+          tar -xf "$(basename "$TARBALL_URL")"
+          TOOLCHAIN_DIR=$(find . -maxdepth 1 -type d -name "${BOOTLIN_ARCH}--musl--stable-*" | head -n1)
+          export PATH="$(realpath "$TOOLCHAIN_DIR")/bin:$PATH"
+          export CC=$(realpath "$(find "$TOOLCHAIN_DIR/bin" -name '*-gcc.br_real' -type f -executable | head -n1)")
+          [ -z "$CC" ] && { echo "No gcc.br_real found in $TOOLCHAIN_DIR/bin" >&2; exit 1; }
+          cd -
 
           ### Build s-ui
-          go build -ldflags="-w -s" -tags "with_quic,with_grpc,with_utls,with_acme,with_gvisor" -o sui main.go
+          go build -ldflags="-w -s -linkmode external -extldflags '-static'" -tags "with_quic,with_grpc,with_utls,with_acme,with_gvisor" -o sui main.go
+          file sui
+          ldd sui || echo "Static binary confirmed"
 
           mkdir s-ui
           cp sui s-ui/