diff -Naurp cups.old/ChangeLog cups/ChangeLog
--- cups.old/cups-1.5.2-r21.ebuild	2012-05-11 17:49:11.000000000 +0900
+++ cups/cups-1.5.2-r21.ebuild	2012-05-16 17:01:09.361013634 +0900
@@ -99,6 +99,7 @@ PATCHES=(
 	"${WORKDIR}/${PN}-1.5.2-avahi.patch"			# avahi support from debian
 	"${FILESDIR}/${PN}-1.5.2-browsing.patch"		# browsing off by default
 	"${WORKDIR}/${PN}-1.5.2-locales.patch"			# patch locales back into existence
+	"${FILESDIR}/${PN}-1.5.2-libexec.patch"
 )
 
 pkg_setup() {
@@ -178,17 +179,22 @@ src_configure() {
 	fi
 
 	econf \
-		--libdir=/usr/$(get_libdir) \
-		--localstatedir=/var \
+		--libdir="${EPREFIX}"/usr/$(get_libdir) \
+		--exec-prefix="${EPREFIX}"/usr \
+		--localstatedir="${EPREFIX}"/var \
 		--with-cups-user=lp \
 		--with-cups-group=lp \
-		--with-docdir=/usr/share/cups/html \
+		--with-docdir="${EPREFIX}"/usr/share/cups/html \
+		--with-icondir="${EPREFIX}"/usr/share/icon \
 		--with-languages="${LINGUAS}" \
-		--with-pdftops=/usr/bin/pdftops \
+		--with-menudir="${EPREFIX}"/usr/share/menu \
+		--with-pdftops="${EPREFIX}"/usr/bin/pdftops \
+		--with-rcdir="${EPREFIX}"/etc \
 		--with-system-groups=lpadmin \
 		$(use_enable acl) \
 		$(use_enable avahi) \
 		$(use_enable dbus) \
+		--with-dbusdir=$(use dbus && echo "${EPREFIX}"/etc/dbus || echo "") \
 		$(use_enable debug) \
 		$(use_enable debug debug-guards) \
 		$(use_enable jpeg) \
@@ -210,12 +216,6 @@ src_configure() {
 		--disable-dnssd \
 		$(use_with systemd systemdsystemunitdir "$(systemd_get_unitdir)") \
 		${myconf}
-
-	# install in /usr/libexec always, instead of using /usr/lib/cups, as that
-	# makes more sense when facing multilib support.
-	sed -i -e 's:SERVERBIN.*:SERVERBIN = "$(BUILDROOT)"/usr/libexec/cups:' Makedefs || die
-	sed -i -e 's:#define CUPS_SERVERBIN.*:#define CUPS_SERVERBIN "/usr/libexec/cups":' config.h || die
-	sed -i -e 's:cups_serverbin=.*:cups_serverbin=/usr/libexec/cups:' cups-config || die
 }
 
 src_compile() {
diff -Naurp cups.old/files/cups-1.5.2-libexec.patch cups/files/cups-1.5.2-libexec.patch
--- cups.old/files/cups-1.5.2-libexec.patch	1970-01-01 09:00:00.000000000 +0900
+++ cups/files/cups-1.5.2-libexec.patch	2012-05-16 17:01:09.361013634 +0900
@@ -0,0 +1,20 @@
+install in /usr/libexec always, instead of using /usr/lib/cups, as that makes more 
+sense when facing multilib support.
+--- config-scripts/cups-directories.m4	2011-05-12 14:21:56.000000000 +0900
++++ config-scripts/cups-directories.m4.new	2012-05-16 17:00:22.000000000 +0900
+@@ -403,14 +403,13 @@ case "$uname" in
+ 	*BSD* | Darwin*)
+ 		# *BSD and Darwin (MacOS X)
+ 		INSTALL_SYSV=""
+-		CUPS_SERVERBIN="$exec_prefix/libexec/cups"
+ 		;;
+ 	*)
+ 		# All others
+ 		INSTALL_SYSV="install-sysv"
+-		CUPS_SERVERBIN="$exec_prefix/lib/cups"
+ 		;;
+ esac
++CUPS_SERVERBIN="$exec_prefix/libexec/cups"
+ 
+ AC_DEFINE_UNQUOTED(CUPS_SERVERBIN, "$CUPS_SERVERBIN")
+ AC_SUBST(CUPS_SERVERBIN)