WITHOUT_CLANG_BOOTSTRAP revision 319247
$FreeBSD: stable/11/tools/build/options/WITHOUT_CLANG_BOOTSTRAP 319247 2017-05-30 18:04:55Z ngie $
Set to not build the Clang C/C++ compiler during the bootstrap phase of the build. To be able to build the system, either gcc or clang bootstrap must be enabled unless an alternate compiler is provided via XCC.