CMake Warning: Manually-specified variables were not used by the project: CMAKE_EXPORT_NO_PACKAGE_REGISTRY protobuf_BUILD_LIBPROTOC g++: internal compiler error: Terminated (program cc1plus) Please submit a full bug report, with preprocessed source if appropriate. See for instructions. make[2]: *** [source_subfolder/cmake/CMakeFiles/libprotobuf.dir/__/src/google/protobuf/descriptor.cc.o] Error 4 make[2]: *** Waiting for unfinished jobs.... g++: internal compiler error: Terminated (program cc1plus) Terminated make[2]: *** [source_subfolder/cmake/CMakeFiles/libprotobuf.dir/__/src/google/protobuf/descriptor.pb.cc.o] Error 143 g++: internal compiler error: Terminated (program cc1plus) Please submit a full bug report, with preprocessed source if appropriate. See for instructions. make[2]: *** [source_subfolder/cmake/CMakeFiles/libprotobuf.dir/__/src/google/protobuf/compiler/parser.cc.o] Error 4 make[1]: *** [source_subfolder/cmake/CMakeFiles/libprotobuf.dir/all] Error 2 make: *** [all] Error 2 protobuf/3.9.1: ERROR: Package '49c4d0ad1a814e4ca5b4bb05cb957f4fe04a2e00' build failed protobuf/3.9.1: WARN: Build folder /home/conan/w/cci_PR-4682/.conan/data/protobuf/3.9.1/_/_/build/49c4d0ad1a814e4ca5b4bb05cb957f4fe04a2e00 ERROR: Exiting with code: 5