Add USE_FFMPEG to the list of configure macros.

git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@3626 92316355-f0b4-4df1-b90c-862c8a59935f

configure.ac

@@ -224,6 +224,9 @@ if test "${ac_cv_my_have_ffmpeg}" = "no"; then
   PKG_CHECK_MODULES([LIBAVFORMAT], [libavformat], [:], [ac_cv_my_have_ffmpeg=no])
   PKG_CHECK_MODULES([LIBSWSCALE], [libswscale], [:], [ac_cv_my_have_ffmpeg=no])
 fi
+if test "${ac_cv_my_have_ffmpeg}" != "no"; then
+  AC_DEFINE(USE_FFMPEG, 1, Define to 1 to use FFmpeg)
+fi
 AM_CONDITIONAL(USE_FFMPEG, test "${ac_cv_my_have_ffmpeg}" = "yes")
 
 # Build CGAL stuff?