diff --git a/include/unixconf.h b/include/unixconf.h
index 1fe51c128..f4856055c 100644
--- a/include/unixconf.h
+++ b/include/unixconf.h
@@ -338,7 +338,7 @@
 #endif
 
 #if defined(BSD) || defined(ULTRIX)
-#if !defined(DGUX) && !defined(SUNOS4) && !defined(__NetBSD__)
+#if !defined(DGUX) && !defined(SUNOS4) && !defined(__NetBSD__) && !defined(__FreeBSD__)
 #define memcpy(d, s, n) bcopy(s, d, n)
 #define memcmp(s1, s2, n) bcmp(s2, s1, n)
 #endif
diff --git a/sys/unix/hints/netbsd.500 b/sys/unix/hints/bsd.500
similarity index 88%
rename from sys/unix/hints/netbsd.500
rename to sys/unix/hints/bsd.500
index 8a688a630..14187680a 100644
--- a/sys/unix/hints/netbsd.500
+++ b/sys/unix/hints/bsd.500
@@ -12,6 +12,10 @@
 # This hints file provides the legacy configuration that NetHack has shipped
 # with historically - this means you will most likely need to hand edit .h
 # and Makefiles.
+#
+# note: '#-INCLUDE' is not just a comment. setup.sh inserts the contents of
+#       a file found in sys/unix/hints/include
+#-INCLUDE whichbsd.500
 
 PREFIX=/usr/local
 
@@ -52,11 +56,17 @@ VARDIRPERM = 0755
 .ifdef MAKEFILE_DOC
 MAKEDEFS = ../util/makedefs
 NEEDMAKEDEFS = $(MAKEDEFS)
+
+.if ${WHICHBSD} == "NETBSD"
 .if exists (/usr/pkg/bin/groff)
 NROFF = /usr/pkg/bin/groff
 .else
 NROFF = groff
-.endif
+.endif  # ? Is NROFF groff or /usr/pkg/bin/groff
+.else   # WHICHBSD is not NETBSD
+NROFF = groff
+.endif  # WHICHBSD
+
 # NROFF_FLAGS comes from a hints file
 GUIDEBOOK = Guidebook           # regular ASCII file
 COLCMD = col -bx
diff --git a/sys/unix/hints/include/whichbsd.500 b/sys/unix/hints/include/whichbsd.500
new file mode 100644
index 000000000..c2bd28795
--- /dev/null
+++ b/sys/unix/hints/include/whichbsd.500
@@ -0,0 +1,22 @@
+#=================================================================
+# NetHack 5.0  include/whichbsd.500 $NHDT-Date: 1597332785 2020/08/13 15:33:05 $  $NHDT-Branch: NetHack-5.0 $
+#
+# 
+#
+.ifdef WHICHBSD
+.undef WHICHBSD
+.endif
+
+.if ${.MAKE.OS} == "FreeBSD"
+WHICHBSD=FREEBSD
+.elif ${.MAKE.OS} == "OpenBSD"
+WHICHBSD=OPENBSD
+.elif ${.MAKE.OS} == "NetBSD"
+WHICHBSD=NETBSD
+.else
+WHICHBSD=OTHERBSD
+.endif
+
+# End of whichbsd.500 -PRE section
+#=================================================================
+