--- configure.in.orig	2012-07-09 14:45:54.088864442 +0200
+++ configure.in	2012-07-09 14:46:55.868944948 +0200
@@ -135,7 +135,6 @@
             #include <libavcodec/avcodec.h>
             #include <libswscale/swscale.h>
             ]],[[
-                avcodec_init();
                 swscale_version();
                 #ifdef FFMS_USE_FFMPEG_COMPAT
                 int bogus = CODEC_ID_G2M;
@@ -145,7 +144,7 @@
         ])
 
 AC_MSG_CHECKING([whether $_lav_name works])
-LIBS="$_LIBS $LIBAV_LIBS"
+LIBS="$_LIBS $LIBAV_LIBS -lvpx"
 TEST_LIBAV([LIBAV_WORKS])
 AC_MSG_RESULT([$LIBAV_WORKS])
 if test "$LIBAV_WORKS" = no; then