.\" $FreeBSD: releng/12.1/tools/build/options/WITHOUT_CLANG_BOOTSTRAP 313169 2017-02-03 19:09:46Z wblock $ .\" $BSDSUniX $ 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.