Android ndk not bundle v8 .a file symbols

I have a project which similar too J2V8 which bundle v8 to android. But after compile J2V8 has all v8 symbols but similar project lose all v8 symbols. You can check the original J2V8.so here by using nm -D libj2v8.so | grep "GetIsolate", you can get something like 003530fc T _ZN2v815SnapshotCreator10GetIsolateEv 003613c4 T _ZN2v86Object10GetIsolateEv 0035f78c T _ZN2v87Context10GetIsolateEv 0038c354 W _ZNK2v88internal10HeapObject10GetIsolateEv 00503a78 T _ZNK2v88internal11MessageImpl10GetIsolateEv 00503b4c T _ZNK2v88internal16EventDetailsImpl10GetIsolateEv But after compile sample project, the related output is none.

from Android ndk not bundle v8 .a file symbols