bluez: update to 5.21; added systemd build option (on).

srcpkgs/bluez/template

@@ -1,13 +1,13 @@
 # Template file for 'bluez'
 pkgname=bluez
-version=5.20
+version=5.21
 revision=1
 build_style=gnu-configure
 configure_args="--with-udevdir=/usr/lib/udev
  --with-systemdsystemunitdir=/usr/lib/systemd/system
  --enable-pie --enable-threads --enable-library"
 hostmakedepends="automake libtool pkg-config flex"
-makedepends="libglib-devel libudev-devel>=183 dbus-devel systemd-devel
+makedepends="libglib-devel libudev-devel>=183 dbus-devel
  cups-devel libical-devel readline-devel>=6.3"
 conf_files="/etc/bluetooth/main.conf"
 systemd_services="bluetooth.service true"
@@ -16,7 +16,18 @@ maintainer="Juan RP <xtraeme@gmail.com>"
 homepage="http://www.bluez.org/"
 license="GPL-2"
 distfiles="${KERNEL_SITE}/bluetooth/$pkgname-$version.tar.xz"
-checksum=531fbaa0a9baf7b1f76fb8fd8975c20d3cc61cdc772a39d63df1d6abfc2a7481
+checksum=81eb073516f39ff1fa02fa40120e834f40fdb0b772f8f4153a9ab566cc0a1f4f
+
+# Package build options
+build_options="systemd"
+build_options_default="systemd"
+
+if [ "$build_option_systemd" ]; then
+	configure_args+=" --enable-systemd"
+	makedepends+=" systemd-devel"
+else
+	configure_args+=" --disable-systemd"
+fi
 
 pre_configure() {
 	autoreconf -fi