Some problems during ./ns3 build about ld.lld: error: undefined symbol: google::protobuf::internal::AnyMetadata::PackFrom(google::protobuf::Arena*, google::protobuf::Message const&)

[chenwenqiao]

I am trying to build ns3gym（app-ns-3.36+） following the instructions in the README. I have installed all the required packages, but I get the error message :
ld.lld: error: undefined symbol: google::protobuf::internal::AnyMetadata::PackFrom(google::protobuf::Arena*, google::protobuf::Message const&)

referenced by any.pb.h:112 (/home/bcng/anaconda3/include/google/protobuf/any.pb.h:112)
CMakeFiles/opengym-2.dir/opengym-2/mygym.cc.o:(google::protobuf::Any::PackFrom(google::protobuf::Message const&))
More details is shown in following figure:

I guess this problem is related to anaconda, but I don't know how to slove it.
I wonder how to solve this problem urgently. I am stuck here for days. Thanks for any reply and potential solutions.