gentoo-overlay/media-libs/mediastreamer/files/mediastreamer-2.8.2-v4l-automagic.patch

--- configure.ac.orig	2012-02-22 20:29:04.000000000 +0400
+++ configure.ac	2012-05-15 16:13:02.979041146 +0400
@@ -624,6 +624,16 @@
 AC_DEFINE_UNQUOTED(PACKAGE_DATA_DIR,  "${package_prefix}/share" ,[path of data])
 AC_SUBST(PACKAGE_DATA_DIR)
 
+AC_ARG_ENABLE(v4l,
+      [  --disable-v4l       Disable usage of v4l],
+      [case "${enableval}" in
+        yes) v4l=yes ;;
+        no)  v4l=no ;;
+        *) AC_MSG_ERROR(bad value ${enableval} for --disable-v4l) ;;
+      esac],[v4l=yes])
+
+if test "$v4l" = "yes" ; then
+
 dnl check for video4linux headers
 AC_CHECK_HEADERS(linux/videodev.h linux/videodev2.h)
 if test "${ac_cv_header_linux_videodev_h}" = "yes" ; then
@@ -690,6 +700,10 @@
       esac],[tests=yes])
 AM_CONDITIONAL(ENABLE_TESTS, test x$tests = xyes)
 
+fi
+
+AM_CONDITIONAL(BUILD_V4L, test x$found_v4l = xyes )
+
 
 dnl ##################################################
 dnl # Check for doxygen