--- sys/unix/Makefile.doc.orig	2023-05-16 21:33:58 UTC
+++ sys/unix/Makefile.doc
@@ -78,17 +78,17 @@ Guidebook.dvi	: $(GUIDEBOOK_TEX)
 # (note: 'make makedefs', not 'make $(MAKEDEFS)')
 $(MAKEDEFS)	: ../util/makedefs.c ../include/config.h ../src/mdlib.c \
 		  ../util/mdgrep.h
-	( cd ../util ; make makedefs )
+	( cd ../util ; ${MAKE} makedefs )
 
-GAME	= nethack
-MANDIR	= /usr/man/man6
+GAME	= xnethack
+MANDIR	= ${PREFIX}/share/man/man6
 MANEXT	= 6
 
 # manual installation for most BSD-style systems
-GAMEMANCREATE = cat nethack.6 | $(NHGREP) >
-RCVRMANCREATE = cat recover.6 | $(NHGREP) >
-DLBMANCREATE = cat dlb.6 | $(NHGREP) >
-MDMANCREATE = cat makedefs.6 | $(NHGREP) >
+GAMEMANCREATE = cat nethack.6 | $(NHGREP) > nethack.6.out ; ${BSD_INSTALL_MAN} nethack.6.out
+RCVRMANCREATE = cat recover.6 | $(NHGREP) > recover.6.out ; ${BSD_INSTALL_MAN} recover.6.out
+DLBMANCREATE = cat dlb.6 | $(NHGREP) > dlb.6.out ; ${BSD_INSTALL_MAN} dlb.6.out
+MDMANCREATE = cat makedefs.6 | $(NHGREP) > makedefs.6.out ; ${BSD_INSTALL_MAN} makedefs.6.out
 # manual installation for most SYSV-style systems
 # GAMEMANCREATE = cat nethack.6 | $(NHGREP) | nroff -man - >
 # RCVRMANCREATE = cat recover.6 | $(NHGREP) | nroff -man - >
@@ -96,10 +96,10 @@ MDMANCREATE = cat makedefs.6 | $(NHGREP) >
 # MDMANCREATE = cat makedefs.6 | $(NHGREP) | nroff -man - >
 
 manpages:
-	-$(GAMEMANCREATE) $(MANDIR)/$(GAME).$(MANEXT)
-	-$(RCVRMANCREATE) $(MANDIR)/recover.$(MANEXT)
-	-$(DLBMANCREATE) $(MANDIR)/dlb.$(MANEXT)
-	-$(MDMANCREATE) $(MANDIR)/makedefs.$(MANEXT)
+	-$(GAMEMANCREATE) ${DESTDIR}$(MANDIR)/$(GAME).$(MANEXT)
+	-$(RCVRMANCREATE) ${DESTDIR}$(MANDIR)/recover.$(MANEXT)
+	-$(DLBMANCREATE) ${DESTDIR}$(MANDIR)/dlb.$(MANEXT)
+	-$(MDMANCREATE) ${DESTDIR}$(MANDIR)/makedefs.$(MANEXT)
 
 # manual creation for distribution
 DISTRIB = Guidebook.txt nethack.txt recover.txt \