Index: head/Makefile.inc1
===================================================================
--- head/Makefile.inc1
+++ head/Makefile.inc1
@@ -1363,6 +1363,16 @@
 .ORDER: ${_kerberos5_bootstrap_tools:C/^/${_bt}-/g}
 .endif
 
+.if ${MK_MANDOCDB} != "no"
+_makewhatis=	lib/libohash \
+		lib/libsqlite3 \
+		lib/libmandoc \
+		usr.bin/mandoc
+${_bt}-usr.bin/mandoc: ${_bt}-lib/libohash ${_bt}-lib/libsqlite3
+.else
+_makewhatis=usr.bin/makewhatis
+.endif
+
 # Rebuild up-to-date libmd for xinstall
 ${_bt}-usr.bin/xinstall: ${_bt}-lib/libmd
 
@@ -1383,7 +1393,7 @@
     ${_awk} \
     ${_cat} \
     usr.bin/lorder \
-    usr.bin/makewhatis \
+    ${_makewhatis} \
     usr.bin/rpcgen \
     ${_sed} \
     ${_yacc} \
Index: head/share/mk/src.opts.mk
===================================================================
--- head/share/mk/src.opts.mk
+++ head/share/mk/src.opts.mk
@@ -126,6 +126,7 @@
     MAIL \
     MAILWRAPPER \
     MAKE \
+    MANDOCDB \
     NDIS \
     NETCAT \
     NETGRAPH \
Index: head/tools/build/options/WITHOUT_MANDOCDB
===================================================================
--- head/tools/build/options/WITHOUT_MANDOCDB
+++ head/tools/build/options/WITHOUT_MANDOCDB
@@ -0,0 +1,6 @@
+.\" $FreeBSD$
+Use the
+.Xr mandoc 1
+version of
+.Xr makewhatis 8
+database and utilities.
Index: head/usr.bin/Makefile
===================================================================
--- head/usr.bin/Makefile
+++ head/usr.bin/Makefile
@@ -317,7 +317,9 @@
 
 .if ${MK_MAN_UTILS} != "no"
 SUBDIR+=	catman
+.if ${MK_MANDOCDB} == "no"
 _makewhatis=	makewhatis
+.endif
 _man=		man
 .endif
 
Index: head/usr.bin/man/Makefile
===================================================================
--- head/usr.bin/man/Makefile
+++ head/usr.bin/man/Makefile
@@ -1,11 +1,17 @@
 # $FreeBSD$
 
+.include <src.opts.mk>
+
 SCRIPTS= man.sh
-LINKS=	${BINDIR}/man ${BINDIR}/apropos \
-	${BINDIR}/man ${BINDIR}/manpath \
-	${BINDIR}/man ${BINDIR}/whatis
+LINKS=	${BINDIR}/man ${BINDIR}/manpath
 
-MAN=	man.1 manpath.1 apropos.1 man.conf.5
+MAN=	man.1 manpath.1 man.conf.5
+
+.if ${MK_MANDOCDB} == no
+LINKS+=	${BINDIR}/man ${BINDIR}/apropos \
+	${BINDIR}/man ${BINDIR}/whatis
+MAN+=	apropos.1
 MLINKS=	apropos.1 whatis.1
+.endif
 
 .include <bsd.prog.mk>
Index: head/usr.bin/mandoc/Makefile
===================================================================
--- head/usr.bin/mandoc/Makefile
+++ head/usr.bin/mandoc/Makefile
@@ -1,5 +1,7 @@
 # $FreeBSD$
 
+.include <src.opts.mk>
+
 MDOCMLDIR=	${.CURDIR}/../../contrib/mdocml
 .PATH: ${MDOCMLDIR}
 
@@ -7,7 +9,14 @@
 FILES=	example.style.css style.css
 FILESDIR=	${SHAREDIR}/mdocml
 MAN=	mandoc.1 eqn.7 mandoc_char.7 tbl.7 man.7 mdoc.7 # roff.7
-MLINKS= mandoc.1 mdocml.1
+MLINKS=	mandoc.1 mdocml.1
+.if ${MK_MANDOCDB} != no
+MAN+=	apropos.1 makewhatis.8
+MLINKS+=	apropos.1 whatis.1
+LINKS=	${BINDIR}/mandoc ${BINDIR}/whatis \
+	${BINDIR}/mandoc ${BINDIR}/makewhatis \
+	${BINDIR}/mandoc ${BINDIR}/apropos
+.endif
 
 LIBMAN_SRCS=	man.c \
 		man_hash.c \