v0.2.1 - Add arm64 cross-compilation and release support

build_static.sh

@@ -11,8 +11,40 @@ DOCKERFILE="$SCRIPT_DIR/Dockerfile.alpine-musl"
 
 # Parse command line arguments
 DEBUG_BUILD=false
-if [[ "$1" == "--debug" ]]; then
-    DEBUG_BUILD=true
+TARGET_ARCH=""
+
+while [[ $# -gt 0 ]]; do
+    case "$1" in
+        --debug)
+            DEBUG_BUILD=true
+            shift
+            ;;
+        --arch)
+            if [[ -z "$2" ]]; then
+                echo "ERROR: --arch requires a value"
+                echo "Usage: $0 [--debug] [--arch <arm64|armv7|x86_64>]"
+                exit 1
+            fi
+            case "$2" in
+                arm64|armv7|x86_64)
+                    TARGET_ARCH="$2"
+                    ;;
+                *)
+                    echo "ERROR: Unsupported architecture '$2'"
+                    echo "Supported values: arm64, armv7, x86_64"
+                    exit 1
+                esac
+            shift 2
+            ;;
+        *)
+            echo "ERROR: Unknown argument '$1'"
+            echo "Usage: $0 [--debug] [--arch <arm64|armv7|x86_64>]"
+            exit 1
+            ;;
+    esac
+done
+
+if [ "$DEBUG_BUILD" = true ]; then
     echo "=========================================="
     echo "Ginxsom MUSL Static Binary Builder (DEBUG MODE)"
     echo "=========================================="
@@ -24,6 +56,9 @@ fi
 echo "Project directory: $SCRIPT_DIR"
 echo "Build directory: $BUILD_DIR"
 echo "Debug build: $DEBUG_BUILD"
+if [[ -n "$TARGET_ARCH" ]]; then
+    echo "Requested target architecture: $TARGET_ARCH"
+fi
 echo ""
 
 # Create build directory
@@ -58,17 +93,43 @@ DOCKER_CMD="docker"
 echo "✓ Docker is available and running"
 echo ""
 
-# Detect architecture
+# Detect host architecture
 ARCH=$(uname -m)
+case "$ARCH" in
+    x86_64)
+        HOST_ARCH="x86_64"
+        ;;
+    aarch64|arm64)
+        HOST_ARCH="arm64"
+        ;;
+    armv7l|armv7)
+        HOST_ARCH="armv7"
+        ;;
+    *)
+        HOST_ARCH="unknown"
+        ;;
+esac
+
+# Resolve target architecture
+if [[ -n "$TARGET_ARCH" ]]; then
+    ARCH="$TARGET_ARCH"
+fi
+
 case "$ARCH" in
     x86_64)
         PLATFORM="linux/amd64"
         OUTPUT_NAME="ginxsom-fcgi_static_x86_64"
         ;;
     aarch64|arm64)
+        ARCH="arm64"
         PLATFORM="linux/arm64"
         OUTPUT_NAME="ginxsom-fcgi_static_arm64"
         ;;
+    armv7l|armv7)
+        ARCH="armv7"
+        PLATFORM="linux/arm/v7"
+        OUTPUT_NAME="ginxsom-fcgi_static_armv7"
+        ;;
     *)
         echo "WARNING: Unknown architecture: $ARCH"
         echo "Defaulting to linux/amd64"
@@ -77,10 +138,51 @@ case "$ARCH" in
         ;;
 esac
 
+# When cross-building, ensure buildx exists and warn about QEMU/binfmt setup
+if [[ "$HOST_ARCH" != "unknown" && "$ARCH" != "$HOST_ARCH" ]]; then
+    echo "NOTE: Cross-building from host '$HOST_ARCH' to target '$ARCH'."
+    echo "      Docker QEMU/binfmt support is required for this to work."
+    if ! docker buildx version >/dev/null 2>&1; then
+        echo "ERROR: docker buildx is required for cross-architecture builds but is not available."
+        echo "Install/enable buildx and binfmt support, then retry."
+        exit 1
+    fi
+    echo "✓ docker buildx is available for cross-architecture build"
+    echo ""
+fi
+
+# Append _debug suffix to output name for debug builds so production binary is never overwritten
+if [ "$DEBUG_BUILD" = true ]; then
+    OUTPUT_NAME="${OUTPUT_NAME}_debug"
+fi
+
 echo "Building for platform: $PLATFORM"
 echo "Output binary: $OUTPUT_NAME"
 echo ""
 
+# Check if Alpine base image is cached
+echo "Checking for cached Alpine Docker image..."
+if ! docker images alpine:3.19 --format "{{.Repository}}:{{.Tag}}" | grep -q "alpine:3.19"; then
+    echo "⚠ Alpine 3.19 image not found in cache"
+    echo "Attempting to pull Alpine 3.19 image..."
+    if ! docker pull alpine:3.19; then
+        echo ""
+        echo "ERROR: Failed to pull Alpine 3.19 image"
+        echo "This is required for the static build."
+        echo ""
+        echo "Possible solutions:"
+        echo "  1. Check your internet connection"
+        echo "  2. Try again later (Docker Hub may be temporarily unavailable)"
+        echo "  3. If you have IPv6 issues, disable IPv6 for Docker"
+        echo ""
+        exit 1
+    fi
+    echo "✓ Alpine 3.19 image pulled successfully"
+else
+    echo "✓ Alpine 3.19 image found in cache"
+fi
+echo ""
+
 # Build the Docker image
 echo "=========================================="
 echo "Step 1: Building Alpine Docker image"
@@ -220,4 +322,4 @@ fi
 echo ""
 echo "Deployment:"
 echo "  scp $BUILD_DIR/$OUTPUT_NAME user@server:/path/to/ginxsom/"
-echo ""
+echo ""