CMake Warning: Manually-specified variables were not used by the project: CMAKE_EXPORT_NO_PACKAGE_REGISTRY protobuf_BUILD_LIBPROTOC g++: fatal error: Terminated signal terminated program cc1plus compilation terminated. make[2]: *** [source_subfolder/cmake/CMakeFiles/libprotobuf.dir/__/src/google/protobuf/util/internal/proto_writer.cc.o] Error 1 make[2]: *** Waiting for unfinished jobs.... g++: fatal error: Terminated signal terminated program cc1plus compilation terminated. make[2]: *** [source_subfolder/cmake/CMakeFiles/libprotobuf.dir/__/src/google/protobuf/util/internal/protostream_objectsource.cc.o] Error 1 g++: fatal error: Terminated signal terminated program cc1plus compilation terminated. make[2]: *** [source_subfolder/cmake/CMakeFiles/libprotobuf.dir/__/src/google/protobuf/util/internal/protostream_objectwriter.cc.o] Error 1 make[1]: *** [source_subfolder/cmake/CMakeFiles/libprotobuf.dir/all] Error 2 make: *** [all] Error 2 protobuf/3.9.1: ERROR: Package '038f8796e196b3dba76fcc5fd4ef5d3d9c6866ec' build failed protobuf/3.9.1: WARN: Build folder /home/conan/w/cci_PR-2037/.conan/data/protobuf/3.9.1/_/_/build/038f8796e196b3dba76fcc5fd4ef5d3d9c6866ec ERROR: protobuf/3.9.1: Error in build() method, line 127 cmake.build() ConanException: Error 2 while executing cmake --build '/home/conan/w/cci_PR-2037/.conan/data/protobuf/3.9.1/_/_/build/038f8796e196b3dba76fcc5fd4ef5d3d9c6866ec/build_subfolder' '--' '-j3' Terminated