CMake Warning: Manually-specified variables were not used by the project: CMAKE_EXPORT_NO_PACKAGE_REGISTRY protobuf_BUILD_LIBPROTOC clang: error: unable to execute command: Terminated clang: error: clang frontend command failed due to signal (use -v to see invocation) clang version 7.0.0-3 (tags/RELEASE_700/final) Target: x86_64-pc-linux-gnu Thread model: posix InstalledDir: /usr/bin clang: note: diagnostic msg: PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace, preprocessed source, and associated run script. Terminated make[2]: *** [source_subfolder/cmake/CMakeFiles/libprotobuf.dir/build.make:602: source_subfolder/cmake/CMakeFiles/libprotobuf.dir/__/src/google/protobuf/generated_message_reflection.cc.o] Error 143 make[2]: *** Waiting for unfinished jobs.... clang: error: unable to execute command: Terminated clang: error: clang frontend command failed due to signal (use -v to see invocation) clang version 7.0.0-3 (tags/RELEASE_700/final) Target: x86_64-pc-linux-gnu Thread model: posix InstalledDir: /usr/bin clang: note: diagnostic msg: PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace, preprocessed source, and associated run script. Terminated make[2]: *** [source_subfolder/cmake/CMakeFiles/libprotobuf.dir/build.make:615: source_subfolder/cmake/CMakeFiles/libprotobuf.dir/__/src/google/protobuf/generated_message_table_driven.cc.o] Error 143 clang: error: unable to execute command: Terminated clang: error: clang frontend command failed due to signal (use -v to see invocation) clang version 7.0.0-3 (tags/RELEASE_700/final) Target: x86_64-pc-linux-gnu Thread model: posix InstalledDir: /usr/bin clang: note: diagnostic msg: PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace, preprocessed source, and associated run script. Terminated make[2]: *** [source_subfolder/cmake/CMakeFiles/libprotobuf.dir/build.make:641: source_subfolder/cmake/CMakeFiles/libprotobuf.dir/__/src/google/protobuf/io/printer.cc.o] Error 143 make[1]: *** [CMakeFiles/Makefile2:173: source_subfolder/cmake/CMakeFiles/libprotobuf.dir/all] Error 2 make: *** [Makefile:149: all] Error 2 protobuf/3.9.1: ERROR: Package '0552284ce51aa6538c40a2a6aed72277f0b99463' build failed protobuf/3.9.1: WARN: Build folder /home/conan/w/cci_PR-4682/.conan/data/protobuf/3.9.1/_/_/build/0552284ce51aa6538c40a2a6aed72277f0b99463 ERROR: Exiting with code: 5