install with esp-clang & new cache key

.github/actions/setup-goreleaser/action.yml

@@ -35,3 +35,6 @@ runs:
     - name: Check file
       run: tree .sysroot
       shell: bash
+    - name: Get Esp clang
+      run: bash .github/workflows/download_esp_clang.sh
+      shell: bash

.github/workflows/download_esp_clang.sh

@@ -0,0 +1,67 @@
+#!/bin/bash
+set -e
+
+ESP_CLANG_VERSION="19.1.2_20250905-3"
+BASE_URL="https://github.com/goplus/espressif-llvm-project-prebuilt/releases/download/${ESP_CLANG_VERSION}"
+
+get_esp_clang_platform() {
+    local platform="$1"
+    local os="${platform%-*}"
+    local arch="${platform##*-}"
+    
+    case "${os}" in
+        "darwin")
+            case "${arch}" in
+                "amd64") echo "x86_64-apple-darwin" ;;
+                "arm64") echo "aarch64-apple-darwin" ;;
+                *) echo "Error: Unsupported darwin architecture: ${arch}" >&2; exit 1 ;;
+            esac
+            ;;
+        "linux")
+            case "${arch}" in
+                "amd64") echo "x86_64-linux-gnu" ;;
+                "arm64") echo "aarch64-linux-gnu" ;;
+                *) echo "Error: Unsupported linux architecture: ${arch}" >&2; exit 1 ;;
+            esac
+            ;;
+        *)
+            echo "Error: Unsupported OS: ${os}" >&2
+            exit 1
+            ;;
+    esac
+}
+
+get_filename() {
+    local platform="$1"
+    local platform_suffix=$(get_esp_clang_platform "${platform}")
+    echo "clang-esp-${ESP_CLANG_VERSION}-${platform_suffix}.tar.xz"
+}
+
+download_and_extract() {
+    local platform="$1"
+    local os="${platform%-*}"
+    local arch="${platform##*-}"
+    local filename=$(get_filename "${platform}")
+    local download_url="${BASE_URL}/${filename}"
+    
+    echo "Downloading ESP Clang for ${platform}..."
+    echo "  URL: ${download_url}"
+    
+    mkdir -p ".sysroot/${os}/${arch}/crosscompile/clang"
+    curl -fsSL "${download_url}" | tar -xJ -C ".sysroot/${os}/${arch}/crosscompile/clang" --strip-components=1
+    
+    if [[ ! -f ".sysroot/${os}/${arch}/crosscompile/clang/bin/clang++" ]]; then
+        echo "Error: clang++ not found in ${platform} toolchain"
+        exit 1
+    fi
+    
+    echo "${platform} ESP Clang ready in .sysroot/${os}/${arch}/crosscompile/clang"
+}
+
+echo "Downloading ESP Clang toolchain version ${ESP_CLANG_VERSION}..."
+
+for platform in "darwin-amd64" "darwin-arm64" "linux-amd64" "linux-arm64"; do
+    download_and_extract "${platform}"
+done
+
+echo "ESP Clang toolchain completed successfully!"

.github/workflows/release-build.yml

@@ -27,7 +27,6 @@ jobs:
           LINUX_KEY="linux-sysroot-${{ hashFiles('.github/workflows/populate_linux_sysroot.sh', '.github/workflows/release-build.yml') }}-v1.0.0"
           echo "darwin-key=$DARWIN_KEY" >> $GITHUB_OUTPUT
           echo "linux-key=$LINUX_KEY" >> $GITHUB_OUTPUT
-
   populate-darwin-sysroot:
     runs-on: macos-latest
     timeout-minutes: 30
@@ -107,7 +106,7 @@ jobs:
             -v $(pwd):/go/src/llgo \
             -w /go/src/llgo \
             ghcr.io/goreleaser/goreleaser-cross:v1.22 \
-            release --skip=publish,nfpm,snapcraft --snapshot --clean
+            release --verbose --parallelism=1 --skip=publish,nfpm,snapcraft --snapshot --clean
 
       - name: Upload Darwin AMD64 Artifacts
         uses: actions/upload-artifact@v4
@@ -205,7 +204,7 @@ jobs:
           mod-version: ${{ matrix.go-mod-version }}
 
   release:
-    needs: [setup, build, test-artifacts]
+    needs: [setup, test-artifacts]
     runs-on: ubuntu-latest
     if: startsWith(github.ref, 'refs/tags/')
     steps:
@@ -231,4 +230,4 @@ jobs:
             -v $(pwd):/go/src/llgo \
             -w /go/src/llgo \
             ghcr.io/goreleaser/goreleaser-cross:v1.22 \
-            release --clean --skip nfpm,snapcraft
+            release --parallelism=1 --clean --verbose --skip nfpm,snapcraft