+# Rules for systemd
+SYSTEMD_UNIT_DIR:=$(shell pkg-config --variable=systemdsystemunitdir systemd 2>/dev/null)
+ifneq (,$(SYSTEMD_UNIT_DIR))
+DEFAULT_TARGETS+=systemd
+endif
+
+install_systemd:
+ $(if $(SYSTEMD_UNIT_DIR),,$(error SYSTEMD_UNIT_DIR is not defined))
+ install -D -m 644 contrib/systemd/autorandr.service ${DESTDIR}/${SYSTEMD_UNIT_DIR}/autorandr.service
+ifneq ($(PREFIX),/usr/)
+ sed -i -re 's#/usr/bin/autorandr#$(subst #,\#,${PREFIX})/bin/autorandr#g' ${DESTDIR}/${SYSTEMD_UNIT_DIR}/autorandr.service
+endif
+ @echo
+ @echo "To activate the systemd unit, run this command as root:"
+ @echo " systemctl daemon-reload"
+ @echo " systemctl enable autorandr.service"
+ @echo
+
+uninstall_systemd:
+ $(if $(SYSTEMD_UNIT_DIR),,$(error SYSTEMD_UNIT_DIR is not defined))
+ rm -f ${DESTDIR}/${SYSTEMD_UNIT_DIR}/autorandr.service
+