--- /usr/portage/dev-java/asm/asm-2.0-r1.ebuild	2012-04-15 12:31:06.000000000 -0600
+++ asm-2.0-r1.ebuild	2012-09-21 10:28:49.000000000 -0600
@@ -2,6 +2,7 @@
 # Distributed under the terms of the GNU General Public License v2
 # $Header: /var/cvsroot/gentoo-x86/dev-java/asm/asm-2.0-r1.ebuild,v 1.12 2012/04/15 18:11:31 vapier Exp $
 
+EAPI=4
 inherit java-pkg-2 java-ant-2
 
 DESCRIPTION="Bytecode manipulation framework for Java"
@@ -18,10 +19,8 @@
 RDEPEND=">=virtual/jre-1.3"
 RESTRICT="test"
 
-src_unpack() {
-	unpack ${A}
-	cd ${S}
-	echo "objectweb.ant.tasks.path /usr/share/ant-owanttask/lib/ow_util_ant_tasks.jar" \
+src_prepare() {
+	echo "objectweb.ant.tasks.path ${EPREFIX}/usr/share/ant-owanttask/lib/ow_util_ant_tasks.jar" \
 		>> build.properties
 }