Index: head/devel/libclc/Makefile
===================================================================
--- head/devel/libclc/Makefile	(revision 517174)
+++ head/devel/libclc/Makefile	(revision 517175)
@@ -1,49 +1,51 @@
 # Created by: Koop Mast <kwm@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	libclc
 DISTVERSION=	0.4.0.20190527
 PORTREVISION=	2
 CATEGORIES=	devel
 
 MAINTAINER=	x11@FreeBSD.org
 COMMENT=	Required library functions for OpenCL C programming language
 
 LICENSE=	LLVM
 LICENSE_NAME=	LLVM Release License
 LICENSE_FILE=	${WRKSRC}/LICENSE.TXT
 LICENSE_PERMS=	dist-mirror dist-sell pkg-mirror pkg-sell auto-accept
 
+BROKEN_powerpc64=	fails to compile: /usr/local/llvm80/include/llvm-c/DataTypes.h:28:10: fatal error: 'cmath' file not found
+
 BUILD_DEPENDS=	llvm${LLVM_DEFAULT}>=4.0:devel/llvm${LLVM_DEFAULT} \
 		libedit>=0:devel/libedit
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	llvm-mirror
 GH_TAGNAME=	9f6204e
 
 # ninja based build is broken since commit 598792bc (16 sep 2016)
 USES=		gmake python:2.7,build gmake
 USE_LDCONFIG=	yes
 MAKE_ENV=	MAKE=${GMAKE} DESTDIR=${STAGEDIR}
 ALL_TARGET=
 
 post-patch:
 	@${REINPLACE_CMD} -e 's|/usr/bin/python|${PYTHON_CMD}|g' \
 		-e 's|"python |"${PYTHON_VERSION} |g' \
 		${WRKSRC}/build/ninja_syntax.py \
 		${WRKSRC}/configure.py
 
 do-configure:
 	@cd ${WRKSRC} && ${PYTHON_CMD} configure.py ${CONFIGURE_ARGS} -g make \
 		--with-llvm-config=${LOCALBASE}/bin/llvm-config${LLVM_DEFAULT} \
 		--pkgconfigdir=${PREFIX}/libdata/pkgconfig \
 		--prefix=${PREFIX}
 
 .include <bsd.port.options.mk>
 
 # Keep in sync with lang/clover
 .if ${LLVM_DEFAULT:S,-devel,990,} >= 90
 LLVM_DEFAULT=	80
 .endif
 
 .include <bsd.port.mk>