xfce4-session: add systemd build option (on).

srcpkgs/xfce4-session/template

@@ -1,9 +1,9 @@
 # Template file for 'xfce4-session'
 pkgname=xfce4-session
 version=4.10.1
-revision=4
+revision=5
 build_style=gnu-configure
-configure_args="--disable-static --enable-systemd"
+configure_args="--disable-static"
 hostmakedepends="pkg-config intltool xfce4-dev-tools gettext-devel"
 makedepends="libxfce4ui-devel gtk+-devel xfconf-devel dbus-glib-devel
  libwnck2-devel xfce4-panel-devel libSM-devel systemd-devel polkit-devel
@@ -17,8 +17,19 @@ homepage="http://xfce.org"
 distfiles="http://archive.xfce.org/src/xfce/$pkgname/${version%.*}/$pkgname-$version.tar.bz2"
 checksum=0154fabdc398798c3445374ccc52a2f5bcb2d867fc94bc54114395b24f9cfc83
 
+# Package build options
+build_options="systemd"
+build_options_default="systemd"
+
+if [ "$build_option_systemd" ]; then
+	configure_args+=" --enable-systemd"
+	makedepends+=" systemd-devel"
+else
+	configure_args+=" --disable-systemd"
+fi
+
 pre_configure() {
-	xdt-autogen
+	NOCONFIGURE=1 xdt-autogen
 }
 
 xfce4-session-devel_package() {