Index: graphics/mesa-dri/Makefile.common
===================================================================
--- graphics/mesa-dri/Makefile.common
+++ graphics/mesa-dri/Makefile.common
@@ -86,6 +86,12 @@
 .if ${COMPONENT} != libs
 RUN_DEPENDS+=	llvm${LLVM_DEFAULT}>=3.9.0_4:devel/llvm${LLVM_DEFAULT}
 .endif
+.if defined(PPC_ABI) && ${PPC_ABI} == ELFv2
+CFLAGS+=	-mabi=elfv2
+CXXFLAGS+=	-mabi=elfv2
+CONFIGURE_ENV+=	CC=${LOCALBASE}/bin/clang${LLVM_DEFAULT} \
+		CXX=${LOCALBASE}/bin/clang++${LLVM_DEFAULT}
+.endif
 CONFIGURE_ENV+=	LLVM_CONFIG=${LOCALBASE}/bin/llvm-config${LLVM_DEFAULT}
 LDFLAGS+=	-Wl,-rpath=${LOCALBASE}/llvm${LLVM_DEFAULT}/lib
 CONFIGURE_ARGS+=	--enable-llvm