--- sys/unix/Makefile.doc.orig	2026-09-27 12:22:28 UTC
+++ sys/unix/Makefile.doc
@@ -88,13 +88,13 @@ $(MAKEDEFS)	: ../util/makedefs.c ../include/config.h .
 # (note: 'make makedefs', not 'make $(MAKEDEFS)')
 $(MAKEDEFS)	: ../util/makedefs.c ../include/config.h ../src/mdlib.c \
 		  ../util/mdgrep.h
-	( cd .. ; make makedefs )
+	( cd .. ; $(MAKE) makedefs )
 
 ../util/stripbs: ../util/stripbs.c
 	( cd .. ; $(MAKE) stripbs )
 
 GAME	= xnethack
-MANDIR	?= /usr/man/man6
+MANDIR	?= $(PREFIX)/share/man/man6
 MANEXT	= 6
 MANDIRPREP ?=  true
 
@@ -112,10 +112,10 @@ manpages: $(PREMANPAGES)
 
 manpages: $(PREMANPAGES)
 	-$(MANDIRPREP)
-	-$(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 xnethack.txt recover.txt \