File opencv-2.1-underlinking.patch of Package opencv

Index: CMakeLists.txt
===================================================================
--- CMakeLists.txt.orig
+++ CMakeLists.txt
@@ -403,6 +403,7 @@ if(UNIX)
         endif()
         if(WITH_V4L)
             CHECK_MODULE(libv4l1 HAVE_LIBV4L)
+	    CHECK_MODULE(libv4l2 HAVE_LIBV4L2)
             CHECK_INCLUDE_FILE(linux/videodev.h HAVE_CAMV4L)
             CHECK_INCLUDE_FILE(linux/videodev2.h HAVE_CAMV4L2)
         else()