Index: head/devel/p5-B-C/Makefile
===================================================================
--- head/devel/p5-B-C/Makefile
+++ head/devel/p5-B-C/Makefile
@@ -25,6 +25,7 @@
 USE_PERL5=	configure
 
 MAKE_ENV=	PERL_INC_STAGE=${PERL_INC_STAGE}
+MAKE_JOBS_UNSAFE=	yes
 PERL_INC_STAGE=	${STAGEDIR}${PREFIX}/lib/perl5/${PERL_VER}/${PERL_ARCH}/CORE
 
 PLIST_SUB=	PERL_ARCH=${PERL_ARCH}