[ 82%] Building CXX object src/shogun/CMakeFiles/libshogun.dir/io/protobuf/Chunks.pb.cc.o
[ 82%] Building CXX object src/shogun/CMakeFiles/libshogun.dir/io/protobuf/Headers.pb.cc.o
[ 82%] Building CXX object src/shogun/CMakeFiles/libshogun.dir/io/protobuf/ShogunVersion.pb.cc.o
[ 83%] Built target libshogun
Scanning dependencies of target shogun
Linking CXX shared library libshogun.dylib
Undefined symbols for architecture x86_64:
  "google::protobuf::MessageFactory::InternalRegisterGeneratedFile(char const*, void (*)(std::string const&))", referenced from:
      shogun::protobuf_AddDesc_Chunks_2eproto() in Chunks.pb.cc.o
      shogun::protobuf_AddDesc_Headers_2eproto() in Headers.pb.cc.o
      shogun::protobuf_AddDesc_ShogunVersion_2eproto() in ShogunVersion.pb.cc.o
  "google::protobuf::DescriptorPool::FindFileByName(std::string const&) const", referenced from:
      shogun::protobuf_AssignDesc_Chunks_2eproto() in Chunks.pb.cc.o
      shogun::protobuf_AssignDesc_Headers_2eproto() in Headers.pb.cc.o
      shogun::protobuf_AssignDesc_ShogunVersion_2eproto() in ShogunVersion.pb.cc.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [src/shogun/libshogun.15.0.dylib] Error 1
make[1]: *** [src/shogun/CMakeFiles/shogun.dir/all] Error 2
make: *** [all] Error 2