Index: configure.in
===================================================================
--- configure.in	(revision 1006)
+++ configure.in	(working copy)
@@ -303,11 +303,20 @@
 
 	if test "x$enable_mmx" = "xyes"; then
 		CPU_CFLAGS="-DHAVE_MMX -DUSE_MMX $CPU_CFLAGS" # -D_MMX_ doesn't work
+		enable_mmx32=yes
 	fi
 	if test "x$enable_3dnow" = "xyes"; then
 		CPU_CFLAGS="-DHAVE_3Dnow $CPU_CFLAGS" # -DUSE_3DNOW --> don't use, not compilin
 	fi
 ;;
+x86_64)
+	test "x$enable_mmx" = "xauto" && enable_mmx=yes
+	CPU_CFLAGS="-DX86_CPU $CPU_CFLAGS"
+	if test "x$enable_mmx" = "xyes"; then
+		CPU_CFLAGS="-DHAVE_MMX -DUSE_MMX $CPU_CFLAGS"
+
+        fi
+;;
 powerpc)
 	CPU_CFLAGS="-mcpu=powerpc $CPU_CFLAGS"
 	if test "x$enable_altivec" = "xyes"; then
@@ -319,6 +328,7 @@
 test "x$enable_mmx" = "xauto" && enable_mmx=no
 
 AM_CONDITIONAL(USEMMX, test "x$enable_mmx" = "xyes")
+AM_CONDITIONAL(USEMMX32, test "x$enable_mmx32" = "xyes")
 AM_CONDITIONAL(TARGET_BUILTIN_VECTOR,test "x$enable_mmx" = "xyes")
 AM_CONDITIONAL(USE3DNOW, test "x$enable_3dnow" = "xyes")
 AM_CONDITIONAL(TARGET_ARCH_POWERPC, test "x$target_cpu" = "xpowerpc")
Index: libmpeg3/video/Makefile.am
===================================================================
--- libmpeg3/video/Makefile.am	(revision 1006)
+++ libmpeg3/video/Makefile.am	(working copy)
@@ -9,7 +9,7 @@
 	subtitle.c \
 	vlc.c
 
-if USEMMX
+if USEMMX32
 libmpeg3_video_la_SOURCES += mmxidct.S reconmmx.s
 else
 libmpeg3_video_la_SOURCES +=