Index: Makefile
===================================================================
--- Makefile	(revision 486983)
+++ Makefile	(working copy)
@@ -11,7 +11,8 @@
 
 LICENSE=	BSD3CLAUSE
 
-USES=		alias cmake:outsource compiler:c++11-lang pkgconfig shebangfix
+USES=		alias cmake:outsource compiler:c++11-lang localbase:ldflags pkgconfig \
+		shebangfix
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	imageworks
@@ -19,7 +20,6 @@
 
 CMAKE_ON=	USE_EXTERNAL_TINYXML USE_EXTERNAL_YAML
 CMAKE_OFF=	OCIO_BUILD_JNIGLUE OCIO_BUILD_NUKE OCIO_BUILD_STATIC
-LDFLAGS+=	-L${LOCALBASE}/lib
 # pyglue gives an error on use of register
 # this should only be an error using c++17
 CXXFLAGS+=	-Wno-deprecated-register
@@ -80,6 +80,10 @@
 EXTRA_PATCHES=	${PATCHDIR}/libs
 .endif
 
+.if exists(/usr/lib/libstdc++.so)
+CXXFLAGS+=	-Wno-unused-function
+.endif
+
 post-patch:
 	@${REINPLACE_CMD} -e '/pkg_check_modules/ s|yaml-cpp|&03|' \
 		${WRKSRC}/CMakeLists.txt