--- /dev/null
+diff -uap httpd-2.4.27/modules/arch/unix/config5.m4.systemd httpd-2.4.27/modules/arch/unix/config5.m4
+--- httpd-2.4.27/modules/arch/unix/config5.m4.systemd
++++ httpd-2.4.27/modules/arch/unix/config5.m4
+@@ -18,6 +18,16 @@
+ fi
+ ])
+
++APACHE_MODULE(systemd, Systemd support, , , all, [
++ if test "${ac_cv_header_systemd_sd_daemon_h}" = "no" || test -z "${SYSTEMD_LIBS}"; then
++ AC_MSG_WARN([Your system does not support systemd.])
++ enable_systemd="no"
++ else
++ APR_ADDTO(MOD_SYSTEMD_LDADD, [$SYSTEMD_LIBS])
++ enable_systemd="yes"
++ fi
++])
++
+ APR_ADDTO(INCLUDES, [-I\$(top_srcdir)/$modpath_current])
+
+ APACHE_MODPATH_FINISH