only create coverage for ltm build

coverage.sh

@@ -17,6 +17,11 @@ if [ -z "$(echo $CC | grep "gcc")" ]; then
     exit 0
 fi
 
+if [ "$(echo $2 | grep -v 'makefile[.]')" == "" ]; then
+    echo "only run coverage for the regular makefile, early exit success"
+    exit 0
+fi
+
 # output version
 bash printinfo.sh