Oh, this is true patch.

Index: bsd.man.mk
===================================================================
RCS file: /usr/local/libdata/cvs/netbsd/share/mk/bsd.man.mk,v
retrieving revision 1.1.1.9
retrieving revision 1.1.1.1.2.11
diff -u -r1.1.1.9 -r1.1.1.1.2.11
--- bsd.man.mk	1999/09/16 16:43:48	1.1.1.9
+++ bsd.man.mk	1999/11/28 23:16:56	1.1.1.1.2.11
@@ -119,10 +119,7 @@
 		shift; \
 		dir=${DESTDIR}${MANDIR}/cat$${name##*.}; \
 		t=$${dir}${MANSUBDIR}/$${name%.*}.0${MCOMPRESSSUFFIX}; \
-		if [ -z "${UPDATE}" -o ! -f $$t ]; then \
-		    echo $$t -\> $$l; \
-		    ln -f $$l $$t; \
-		fi; \
+		echo $$t -\> $$l; ln -f $$l $$t; \
 	done
 .endif
 .else
@@ -141,10 +138,7 @@
 		shift; \
 		dir=${DESTDIR}${MANDIR}/man$${name##*.}; \
 		t=$${dir}${MANSUBDIR}/$${name}${MCOMPRESSSUFFIX}; \
-		if [ -z "${UPDATE}" -o ! -f $$t ]; then \
-		    echo $$t -\> $$l; \
-		    ln -f $$l $$t; \
-		fi; \
+		echo $$t -\> $$l; ln -f $$l $$t; \
 	done
 .endif
 
--
Takahiro Kambe <taca@sky.yamashina.kyoto.jp>