mac build changes

build.sh

@@ -52,6 +52,21 @@ if [[ "${1:-}" == "--linux-release" ]]; then
     exit $?
 fi
 
+# Check for --mac-release flag for macOS release build (must be run on macOS)
+if [[ "${1:-}" == "--mac-release" ]]; then
+    check_and_clean_target "macos-release"
+    shift
+    if [[ "$OSTYPE" != "darwin"* ]]; then
+        echo "ERROR: --mac-release must be run on a native macOS system."
+        echo "  Copy this repo to a Mac and run: ./build.sh --mac-release $*"
+        exit 1
+    fi
+    echo "Building macOS release natively..."
+    ./util/build-mac.sh "$@"
+    echo "macOS release build complete."
+    exit $?
+fi
+
 # run correct build script for detected OS
 if [[ "$OSTYPE" == "linux-gnu"* ]]; then
     check_and_clean_target "linux"