解决办法:
需要在文件 protobuf/src/google/protobuf/stubs/atomicops_internals_generic_gcc.h 中的以下补丁
inline Atomic64 Release_CompareAndSwap(volatile Atomic64* ptr,
Atomic64 old_value,
Atomic64 new_value) {
__atomic_compare_exchange_n(ptr, &old_value, new_value, false,
__ATOMIC_RELEASE, __ATOMIC_ACQUIRE);
return old_value;
}
原文:undefined reference to `google::protobuf::internal::Release_CompareAndSwap · Issue #3937 · protocolbuffers/protobuf · GitHub