--- p7zip-4.33.ebuild.orig	2006-03-24 08:39:03.000000000 +0100
+++ p7zip-4.33.ebuild	2006-03-24 08:08:39.000000000 +0100
@@ -10,7 +10,7 @@
 
 LICENSE="LGPL-2.1"
 SLOT="0"
-KEYWORDS="~hppa ~ppc ~x86"
+KEYWORDS="~hppa ~ppc ~x86 ~amd64"
 IUSE="static doc"
 
 S=${WORKDIR}/${PN}_${PV}
@@ -24,7 +24,10 @@
 		-e "/^CXX=/s:gcc:$(tc-getCXX):" \
 		-e "/^CC=/s:gcc:$(tc-getCC):" \
 		-e "s:-O1 -s:${CXXFLAGS}:" \
+		-e "s:-O -s:${CXXFLAGS}:" \
 		makefile* || die "cleaning up makefiles"
+	# set up the right makefike
+	use amd64 && cp -f makefile.linux_amd64 makefile.machine
 }
 
 src_compile() {