Index: head/graphics/openshadinglanguage/Makefile
===================================================================
--- head/graphics/openshadinglanguage/Makefile	(revision 537137)
+++ head/graphics/openshadinglanguage/Makefile	(revision 537138)
@@ -1,63 +1,65 @@
 # Created by: Shane Ambler <FreeBSD@Shaneware.biz>
 # $FreeBSD$
 
 PORTNAME=	openshadinglanguage
 DISTVERSIONPREFIX=	Release-
 DISTVERSION=	1.10.9
 PORTREVISION=	2
 CATEGORIES=	graphics devel
 
 MAINTAINER=	FreeBSD@Shaneware.biz
 COMMENT=	Advanced shading language for production GI renderers
 
 LICENSE=	BSD3CLAUSE
 
+BROKEN_FreeBSD_12_powerpc64=	fails to compile: llvm_ops.cpp:101:10: fatal error: 'iostream' file not found
+
 BUILD_DEPENDS=	llvm-config${LLVM_VER}:devel/llvm${LLVM_VER}
 LIB_DEPENDS=	libboost_thread.so:devel/boost-libs \
 		libImath.so:graphics/ilmbase \
 		libIlmImf.so:graphics/openexr \
 		libOpenImageIO.so:graphics/openimageio \
 		libpugixml.so:textproc/pugixml
 RUN_DEPENDS=	llvm-config${LLVM_VER}:devel/llvm${LLVM_VER}
 
 USES=		bison cmake compiler:c++11-lang ncurses python:build
 USE_LDCONFIG=	yes
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	imageworks
 GH_PROJECT=	OpenShadingLanguage
 
 # Use LLVM linker where available
 .if exists(/usr/bin/ld.lld) && (${/usr/bin/ld:L:tA} != /usr/bin/ld.lld)
 LDFLAGS+=	-fuse-ld=lld
 .endif
 
 LLVM_VER=	90
 CMAKE_ON=	ENABLERTTI OSL_BUILD_TESTS USE_LLVM_BITCODE USE_LIBCPLUSPLUS
 CMAKE_OFF=	USE_BOOST_WAVE
 CMAKE_ARGS+=	-DLLVM_CONFIG:STRING="${LOCALBASE}/bin/llvm-config${LLVM_VER}" \
 		-DCMAKE_INSTALL_DOCDIR:STRING=${DOCSDIR}
 # This flag fixes linking with clang 9.0 ??
 CXXFLAGS+=	-DNDEBUG
 
 OPTIONS_DEFINE=		OSLTOY
 OPTIONS_SUB=		yes
 OSLTOY_DESC=		Interactive shader edit and visualize tool
 OSLTOY_CMAKE_BOOL=	USE_QT
 OSLTOY_USES=		qt:5
 OSLTOY_USE=		QT=buildtools,core,gui,qmake_build,widgets
 
 CXXFLAGS+=	-I${STAGEDIR}/include
 
 PLIST_SUB+=	LIBVERS=${DISTVERSION}
 
 post-patch:
 	@${REINPLACE_CMD} -e 's,bash,sh,' \
 		${WRKSRC}/src/liboslexec/serialize-bc.bash
 	@${REINPLACE_CMD} -e 's,%%DATADIR%%,${DATADIR},' \
 		-e 's,%%PYCMD%%,${PYTHON_CMD},' \
 		${WRKSRC}/src/shaders/CMakeLists.txt \
 		${WRKSRC}/src/shaders/MaterialX/CMakeLists.txt \
 		${WRKSRC}/src/doc/CMakeLists.txt
 
 .include <bsd.port.mk>