We need to add RELEASE=1 if we specify build flags manually.

.gitlab-ci.yml

@@ -64,7 +64,7 @@ include:
       platform: 'x86'
       tagname: 'macOS'
       gnu_make: 'make'
-      build_flags: 'CC="ccache cc" CXX="ccache c++"'
+      build_flags: 'CC="ccache cc" CXX="ccache c++" RELEASE=1'
 
 smoketest-jsexec-linux:
   tags: [Linux]