--- a/longrun-0.9-r4.ebuild	2015-02-28 19:22:02.807660006 +0000
+++ a/longrun-0.9-r4.ebuild	2015-02-28 19:21:35.617661925 +0000
@@ -2,7 +2,7 @@ 
 # Distributed under the terms of the GNU General Public License v2
 # $Header: /var/cvsroot/gentoo-x86/app-admin/longrun/longrun-0.9-r4.ebuild,v 1.2 2009/11/20 14:44:33 maekke Exp $
 
-inherit eutils linux-info toolchain-funcs
+inherit eutils linux-info toolchain-funcs flag-o-matic
 
 DESCRIPTION="A utility to control Transmeta's Crusoe and Efficeon processors"
 HOMEPAGE="http://freshmeat.net/projects/longrun/"
@@ -44,6 +44,7 @@ src_unpack() {
 }
 
 src_compile() {
+	append-flags "-D_GNU_SOURCE"
 	emake CC="$(tc-getCC)" || die "emake failed"
 }