fix build for windows

Author: alireza0

.github/workflows/windows.yml

@@ -22,16 +22,9 @@ jobs:
         platform:
           - amd64
           - arm64
-        include:
-          - platform: amd64
-            goarch: amd64
-            suffix: ""
-          - platform: arm64
-            goarch: arm64
-            suffix: "-arm64"
+          - 386
 
     runs-on: ubuntu-latest
-    
     steps:
       - name: Checkout repository
         uses: actions/checkout@v5.0.0
@@ -60,31 +53,38 @@ jobs:
           mv frontend/dist web/html
           rm -fr frontend
 
-      - name: Build S-UI for Windows
+      - name: Build s-ui
         run: |
           export CGO_ENABLED=1
-          export GOOS=windows
-          export GOARCH=${{ matrix.goarch }}
-          
-          # Install MinGW-w64 for Windows cross-compilation
-          sudo apt-get update
-          sudo apt-get install -y mingw-w64
-          
-          # Set CC based on architecture
-          case "${{ matrix.goarch }}" in
-            amd64) export CC=x86_64-w64-mingw32-gcc ;;
-            arm64) export CC=x86_64-w64-mingw32-gcc ;; # MinGW doesn't support ARM64 well, use x86_64
+          export GOOS=linux
+          export GOARCH=${{ matrix.platform }}
+          # Use Bootlin prebuilt cross-toolchains (musl 1.2.5 in stable series)
+          case "${{ matrix.platform }}" in
+            amd64) BOOTLIN_ARCH="x86-64" ;;
+            arm64) BOOTLIN_ARCH="aarch64" ;;
+            386) BOOTLIN_ARCH="x86-i686" ;;
           esac
-          
-          echo "Using CC: $CC"
-          echo "GOOS: $GOOS, GOARCH: $GOARCH"
+          echo "Resolving Bootlin musl toolchain for arch=$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 -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"
 
-          ### Build s-ui for Windows
-          go build -ldflags="-w -s" -tags "with_quic,with_grpc,with_utls,with_acme,with_gvisor" -o "sui${{ matrix.suffix }}.exe" main.go
-          file "sui${{ matrix.suffix }}.exe"
-          
           mkdir s-ui-windows
-          cp "sui${{ matrix.suffix }}.exe" s-ui-windows/sui.exe
+          cp sui s-ui-windows/sui.exe
           cp -r windows/* s-ui-windows/
 
       - name: Package