clang: error: unable to execute command: Terminated clang: error: clang frontend command failed due to signal (use -v to see invocation) clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final) Target: x86_64-pc-linux-gnu Thread model: posix InstalledDir: /usr/bin clang: note: diagnostic msg: PLEASE submit a bug report to http://llvm.org/bugs/ and include the crash backtrace, preprocessed source, and associated run script. Terminated make[1]: *** [crypto/err/libcrypto-lib-err_blocks.o] Error 143 make[1]: *** Waiting for unfinished jobs.... Terminated make[1]: *** [crypto/err/libcrypto-lib-err_prn.o] Error 143 Terminated make[1]: *** [crypto/ess/libcrypto-lib-ess_asn1.o] Error 143 make: *** [build_sw] Error 2 ERROR: Exiting with code: 5