--- sendmail-8.17.1/Makefile	2021-06-22 10:24:42.000000000 +0000
+++ sendmail-8.17.1/Makefile.new	2022-01-31 20:53:02.878126128 +0000
@@ -1,9 +1,9 @@
 #       $Id: Makefile.dist,v 8.15 2001-08-23 20:44:39 ca Exp $
 
 SHELL= /bin/sh
-SUBDIRS= libsm libsmutil libsmdb sendmail editmap mail.local \
+SUBDIRS= libsm libsmutil libsmdb libmilter sendmail editmap mail.local \
 	 mailstats makemap praliases rmail smrsh vacation
-# libmilter: requires pthread
+CHECKSUBDIRS= libsm libmilter sendmail test
 BUILD=   ./Build
 OPTIONS= $(CONFIG) $(FLAGS)
 
@@ -42,6 +42,13 @@
 		$(SHELL) $(BUILD) $(OPTIONS) -c) || exit; \
 	done
 
+check: FRC
+	@for x in $(CHECKSUBDIRS); \
+	do \
+		(cd $$x; echo Making $@ in:; pwd; \
+		$(SHELL) $(BUILD) $(OPTIONS) $@); \
+	done
+
 $(SUBDIRS): FRC
 	@cd $@; pwd; \
 	$(SHELL) $(BUILD) $(OPTIONS)