configure: WARNING: unrecognized options: --without-gcc
configure: WARNING: --with(out)-system-ffi is ignored on this platform
configure: WARNING: unrecognized options: --without-gcc
source_subfolder/Python/ast.c:3711:5: warning: code will never be executed [-Wunreachable-code]
    PyErr_SetString(PyExc_SystemError, "unhandled import name condition");
    ^~~~~~~~~~~~~~~
1 warning generated.
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.
make: *** [Python/ceval.o] Terminated
make: *** 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 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.
make: *** [Objects/unicodeobject.o] Terminated
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.
make: *** [Python/codecs.o] Terminated
ERROR: Exiting with code: 5