Index: CMakeLists.txt
===================================================================
--- CMakeLists.txt.orig
+++ CMakeLists.txt
@@ -544,6 +544,7 @@ 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()