--- /usr/portage/media-video/mplayer/mplayer-1.0_pre6.ebuild	2004-12-27 23:46:22.000000000 +0900
+++ /usr/portage-amd64/media-video/mplayer/mplayer-1.0_pre6.ebuild	2005-01-05 01:03:59.192139934 +0900
@@ -347,12 +347,18 @@
 	#################
 	# Advanced Options #
 	#################
+	if use x86; then
 	myconf="${myconf} $(use_enable 3dnow)"
 	myconf="${myconf} $(use_enable 3dnowex)";
 	myconf="${myconf} $(use_enable sse)"
 	myconf="${myconf} $(use_enable mmx)"
 	myconf="${myconf} $(use_enable mmx2)"
 	myconf="${myconf} $(use_enable 3dnow)"
+	elif use amd64; then
+		myconf="${myconf} --enable-3dnow --enable-3dnowex --enable-sse"
+		myconf="${myconf} --enable-mmx --enable-mmx2"
+	fi
+
 	myconf="${myconf} $(use_enable debug)"
 	myconf="${myconf} $(use_enable nls i18n)"