Index: head/devel/cereal/Makefile
===================================================================
--- head/devel/cereal/Makefile	(revision 524135)
+++ head/devel/cereal/Makefile	(revision 524136)
@@ -1,25 +1,28 @@
 # $FreeBSD$
 
 PORTNAME=		cereal
 DISTVERSIONPREFIX=	v
 DISTVERSION=		1.3.0
 CATEGORIES=		devel
 
 MAINTAINER=	teodor@sigaev.ru
 COMMENT=	C++11 library for serialization
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 LIB_DEPENDS=	libboost_system.so:devel/boost-libs
 BUILD_DEPENDS=	boost-libs>=1.69:devel/boost-libs \
 		cmake>=2.6.2:devel/cmake \
 		ninja>=1.8.2:devel/ninja
 
 USES=		cmake
 USE_GITHUB=	yes
 GH_ACCOUNT=	USCiLab
 
 CFLAGS+=	-Wno-unused-private-field
 
+CMAKE_ON=	SKIP_PORTABILITY_TEST
+CMAKE_OFF=	WITH_WERROR
+
 .include <bsd.port.mk>