--- libavcodec/Makefile.orig	2012-08-06 10:06:26.000000000 +0200
+++ libavcodec/Makefile	2012-08-06 10:36:33.478505808 +0200
@@ -793,7 +793,7 @@
                                           codec_names.h                 \
                                           fft-internal.h                \
                                           tableprint.h                  \
-                                          $(ARCH)/vp56_arith.h          \
+                                          $(FFMPEG_ARCH)/vp56_arith.h   \
 
 SKIPHEADERS-$(CONFIG_DXVA2)            += dxva2.h dxva2_internal.h
 SKIPHEADERS-$(CONFIG_LIBSCHROEDINGER)  += libschroedinger.h