better musl libc usage

Author: alireza0

.github/workflows/release.yml

@@ -8,6 +8,7 @@ on:
     branches:
       - main
     paths:
+      - '.github/workflows/release.yml'
       - '**.js'
       - '**.css'
       - '**.html'
@@ -47,46 +48,29 @@ jobs:
           export CGO_ENABLED=1
           export GOOS=linux
           export GOARCH=${{ matrix.platform }}
-          TOOLCHAIN_URL=""
-          MUSL_CC_HOST="https://github.com/musl-cc/musl.cc/releases/download/v0.0.1" #http://musl.cc
+          # Use Bootlin prebuilt cross-toolchains (musl 1.2.5 in stable series)
           case "${{ matrix.platform }}" in
-            amd64)
-              TOOLCHAIN_URL="$MUSL_CC_HOST/x86_64-linux-musl-cross.tgz"
-              ;;
-            arm64)
-              TOOLCHAIN_URL="$MUSL_CC_HOST/aarch64-linux-musl-cross.tgz"
-              ;;
-            armv7)
-              TOOLCHAIN_URL="$MUSL_CC_HOST/armv7l-linux-musleabihf-cross.tgz"
-              export GOARCH=arm
-              export GOARM=7
-              ;;
-            armv6)
-              TOOLCHAIN_URL="$MUSL_CC_HOST/armv6-linux-musleabihf-cross.tgz"
-              export GOARCH=arm
-              export GOARM=6
-              ;;
-            armv5)
-              TOOLCHAIN_URL="$MUSL_CC_HOST/arm-linux-musleabi-cross.tgz"
-              export GOARCH=arm
-              export GOARM=5
-              ;;
-            386)
-              TOOLCHAIN_URL="$MUSL_CC_HOST/i686-linux-musl-cross.tgz"
-              ;;
-            s390x)
-              TOOLCHAIN_URL="$MUSL_CC_HOST/s390x-linux-musl-cross.tgz"
-              ;;
+            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 "Downloading musl toolchain for ${{ matrix.platform }}"
-          curl -LO "$TOOLCHAIN_URL"
-          tar -xf *.tgz
-          TOOLCHAIN_DIR=$(find . -maxdepth 1 -type d -name "*-cross" | head -n1)
-          TOOLCHAIN_DIR=$(realpath "$TOOLCHAIN_DIR")
-          export PATH="$TOOLCHAIN_DIR/bin:$PATH"
-          # Detect compiler
-          export CC=$(find $TOOLCHAIN_DIR/bin -name '*-gcc' | head -n1)
-          echo "Using CC=$CC"
+          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 -
           go build -ldflags "-w -s -linkmode external -extldflags '-static'" -o xui-release -v main.go
           file xui-release
           ldd xui-release || echo "Static binary confirmed"