CMake Warning: Manually-specified variables were not used by the project: CMAKE_EXPORT_NO_PACKAGE_REGISTRY protobuf_BUILD_LIBPROTOC Terminated make[2]: *** [source_subfolder/cmake/CMakeFiles/libprotobuf.dir/__/src/google/protobuf/map_field.cc.o] Error 143 make[2]: *** Waiting for unfinished jobs.... Terminated make[2]: *** [source_subfolder/cmake/CMakeFiles/libprotobuf.dir/__/src/google/protobuf/message.cc.o] Error 143 Terminated make[2]: *** [source_subfolder/cmake/CMakeFiles/libprotobuf.dir/__/src/google/protobuf/reflection_ops.cc.o] Error 143 make[1]: *** [source_subfolder/cmake/CMakeFiles/libprotobuf.dir/all] Error 2 make: *** [all] Error 2 Terminated protobuf/3.9.1: ERROR: Package '32ecf8362658460a81002184a1ab0b7e4d1613c1' build failed protobuf/3.9.1: WARN: Build folder /home/conan/w/cci_PR-4682/.conan/data/protobuf/3.9.1/_/_/build/32ecf8362658460a81002184a1ab0b7e4d1613c1 ERROR: protobuf/3.9.1: Error in build() method, line 152 cmake.build() ConanException: Error 143 while executing cmake --build '/home/conan/w/cci_PR-4682/.conan/data/protobuf/3.9.1/_/_/build/32ecf8362658460a81002184a1ab0b7e4d1613c1/build_subfolder' '--' '-j3'