opencv Makefile patch

--- Makefile.orig       2013-09-10 17:14:06.612342004 +0000
+++ Makefile    2013-09-10 17:14:12.067341384 +0000
@@ -18,6 +18,7 @@
 MAKE_JOBS_UNSAFE=      yes
 USE_BZIP2=     yes
 USES=          cmake pkgconfig
+USE_GCC=       4.6
 USE_LDCONFIG=  yes

 WRKSRC=                ${WRKDIR}/OpenCV-${DISTVERSION}
@@ -208,6 +209,7 @@
                -e 's:-pthread:${PTHREAD_LIBS}:g' \
                -e 's:$${OPENCV_LIB_INSTALL_PATH}/pkgconfig:$${CMAKE_INSTALL_PREFIX}/libdata/pkgconfig:g' \
                -e 's:share/OpenCV/doc:share/doc/opencv:g' \
+               -e 's:PCHSupport_FOUND:NOT PCHSupport_FOUND:g' \
                ${WRKSRC}/CMakeLists.txt
        @${REINPLACE_CMD} -e 's|${PORTNAME}/samples|examples/${PORTNAME}|g' \
                ${WRKSRC}/samples/*/CMakeLists.txt \