We generate the file auto_uids.c ourselves.

--- mail/sqmail/sqmail-4.0.07/src/Makefile.orig
+++ mail/sqmail/sqmail-4.0.07/src/Makefile
@@ -95,20 +95,6 @@
 compile auto_split.c
 	./compile auto_split.c
 
-auto_uids.c: \
-auto-uid auto-gid ../conf-users ../conf-groups
-	( ./auto-uid auto_uida `head -1 ../conf-users` \
-	&&./auto-uid auto_uidd `head -2 ../conf-users | tail -1` \
-	&&./auto-uid auto_uidl `head -3 ../conf-users | tail -1` \
-	&&./auto-uid auto_uido `head -4 ../conf-users | tail -1` \
-	&&./auto-uid auto_uidp `head -5 ../conf-users | tail -1` \
-	&&./auto-uid auto_uidq `head -6 ../conf-users | tail -1` \
-	&&./auto-uid auto_uidr `head -7 ../conf-users | tail -1` \
-	&&./auto-uid auto_uids `head -8 ../conf-users | tail -1` \
-	&&./auto-gid auto_gidq `head -1 ../conf-groups` \
-	&&./auto-gid auto_gidn `head -2 ../conf-groups | tail -1` \
-	) > auto_uids.c.tmp && mv auto_uids.c.tmp auto_uids.c
-
 auto_uids.o: \
 compile auto_uids.c
 	./compile auto_uids.c