diff --git a/Makefile.inc1 b/Makefile.inc1 index 61621a76473..849ba9944c9 100644 --- a/Makefile.inc1 +++ b/Makefile.inc1 @@ -202,6 +202,9 @@ BMAKEENV= DESTDIR= \ PATH=${BPATH}:${PATH} \ WORLDTMP=${WORLDTMP} \ MAKEFLAGS="-m ${.CURDIR}/tools/build/mk ${.MAKEFLAGS}" +.if ${BOOTSTRAPPING} < 501100 +BMAKEENV+= CSTD= +.endif BMAKE= MAKEOBJDIRPREFIX=${WORLDTMP} \ ${BMAKEENV} ${MAKE} -f Makefile.inc1 \ BOOTSTRAPPING=${OSRELDATE} \