diff --git a/tools/build/options/makeman b/tools/build/options/makeman
index 5a8b207b228a..db0b75363a85 100755
--- a/tools/build/options/makeman
+++ b/tools/build/options/makeman
@@ -1,347 +1,349 @@
 #!/bin/sh
 #
 # This file is in the public domain.
 # $FreeBSD$
 #
 # This script creates the src.conf.5 man page using template text contained
 # herein and the contents of the WITH_* and WITHOUT_* files in the same
 # directory. Each WITH_* and WITHOUT_* file documents the effect of the
 # /etc/src.conf knob with the same name.
 #
 # For each supported architecture, "make showconfig" is invoked to determine
 # the default setting of every option: always WITH_, always WITHOUT_, or
 # architecture-dependent WITH_/WITHOUT_.  It also determines and describes
 # dependencies between options.
 #
 # Usage:
 #
 #     cd tools/build/options
 #     sh makeman > ../../../share/man/man5/src.conf.5
 
 set -o errexit
 export LC_ALL=C
+# just be clear that we are not making anything
+export UPDATE_DEPENDFILE=no
 
 t=$(mktemp -d -t makeman)
 trap 'test -d $t && rm -rf $t' exit
 
 srcdir=$(realpath ../../..)
 make="make -C $srcdir -m $srcdir/share/mk"
 
 #
 # usage: no_targets all_targets yes_targets
 #
 no_targets()
 {
 	for t1 in $1 ; do
 		for t2 in $2 ; do
 			if [ "${t1}" = "${t2}" ] ; then
 				continue 2
 			fi
 		done
 		echo ${t1}
 	done
 }
 
 show_options()
 {
 	ALL_TARGETS=$(echo $(${make} targets MK_AUTO_OBJ=no | tail -n +2))
 	rm -f $t/settings
 	for target in ${ALL_TARGETS} ; do
 		prev_opt=
 		env -i ${make} showconfig \
 		    SRC_ENV_CONF=/dev/null SRCCONF=/dev/null \
 		    __MAKE_CONF=/dev/null \
 		    TARGET_ARCH=${target#*/} TARGET=${target%/*} |
 		while read var _ val ; do
 			opt=${var#MK_}
 			if [ $opt = "$prev_opt" ]; then
 				echo "$target: ignoring duplicate option $opt" >&2
 				continue
 			fi
 			prev_opt=$opt
 			case ${val} in
 			yes)
 				echo ${opt} ${target}
 				;;
 			no)
 				echo ${opt}
 				;;
 			*)
 				echo "make showconfig broken: ${var} ${_} ${val} (not yes or no)" >&2
 				exit 1
 				;;
 			esac
 		done > $t/settings.target
 		if [ -r $t/settings ] ; then
 			join -t\  $t/settings $t/settings.target > $t/settings.new
 			mv $t/settings.new $t/settings
 		else
 			mv $t/settings.target $t/settings
 		fi
 	done
 
 	while read opt targets ; do
 		if [ "${targets}" = "${ALL_TARGETS}" ] ; then
 			echo "WITHOUT_${opt}"
 		elif [ -z "${targets}" ] ; then
 			echo "WITH_${opt}"
 		else
 			echo "WITHOUT_${opt}" $(no_targets "${ALL_TARGETS}" "${targets}")
 			echo "WITH_${opt} ${targets}"
 		fi
 	done < $t/settings
 }
 
 #
 # usage: show { settings | with | without } ...
 #
 show()
 {
 
 	mode=$1 ; shift
 	case ${mode} in
 	settings)
 		yes_prefix=WITH
 		no_prefix=WITHOUT
 		;;
 	with)
 		yes_prefix=WITH
 		no_prefix=WITH
 		;;
 	without)
 		yes_prefix=WITHOUT
 		no_prefix=WITHOUT
 		;;
 	*)
 		echo 'internal error' >&2
 		exit 1
 		;;
 	esac
 	env -i ${make} .MAKE.MODE=normal "$@" showconfig __MAKE_CONF=/dev/null \
 	    SRCCONF=/dev/null |
 	while read var _ val ; do
 		opt=${var#MK_}
 		case ${val} in
 		yes)
 			echo ${yes_prefix}_${opt}
 			;;
 		no)
 			echo ${no_prefix}_${opt}
 			;;
 		*)
 			echo "make showconfig broken: ${var} ${_} ${val} (not yes or no)" >&2
 			exit 1
 			;;
 		esac
 	done
 }
 
 main()
 {
 	echo "building src.conf.5 man page from files in ${PWD}" >&2
 
 	generated='@'generated
 	cat <<EOF
 .\" DO NOT EDIT-- this file is $generated by tools/build/options/makeman.
 .Dd $(echo $(LC_TIME=C date +'%B %e, %Y'))
 .Dt SRC.CONF 5
 .Os
 .Sh NAME
 .Nm src.conf
 .Nd "source build options"
 .Sh DESCRIPTION
 The
 .Nm
 file contains variables that control what components will be generated during
 the build process of the
 .Fx
 source tree; see
 .Xr build 7 .
 .Pp
 The
 .Nm
 file uses the standard makefile syntax.
 However,
 .Nm
 should not specify any dependencies to
 .Xr make 1 .
 Instead,
 .Nm
 is to set
 .Xr make 1
 variables that control the aspects of how the system builds.
 .Pp
 The default location of
 .Nm
 is
 .Pa /etc/src.conf ,
 though an alternative location can be specified in the
 .Xr make 1
 variable
 .Va SRCCONF .
 Overriding the location of
 .Nm
 may be necessary if the system-wide settings are not suitable
 for a particular build.
 For instance, setting
 .Va SRCCONF
 to
 .Pa /dev/null
 effectively resets all build controls to their defaults.
 .Pp
 The only purpose of
 .Nm
 is to control the compilation of the
 .Fx
 source code, which is usually located in
 .Pa /usr/src .
 As a rule, the system administrator creates
 .Nm
 when the values of certain control variables need to be changed
 from their defaults.
 .Pp
 In addition, control variables can be specified
 for a particular build via the
 .Fl D
 option of
 .Xr make 1
 or in its environment; see
 .Xr environ 7 .
 .Pp
 The environment of
 .Xr make 1
 for the build can be controlled via the
 .Va SRC_ENV_CONF
 variable, which defaults to
 .Pa /etc/src-env.conf .
 Some examples that may only be set in this file are
 .Va WITH_DIRDEPS_BUILD ,
 and
 .Va WITH_META_MODE ,
 and
 .Va MAKEOBJDIRPREFIX
 as they are environment-only variables.
 .Pp
 The values of variables are ignored regardless of their setting;
 even if they would be set to
 .Dq Li FALSE
 or
 .Dq Li NO .
 The presence of an option causes
 it to be honored by
 .Xr make 1 .
 .Pp
 This list provides a name and short description for variables
 that can be used for source builds.
 .Bl -tag -width indent
 EOF
 	show settings SRC_ENV_CONF=/dev/null | sort > $t/config_default
 	# Work around WITH_LDNS_UTILS forcing BIND_UTILS off by parsing the
 	# actual config that results from enabling every WITH_ option.  This
 	# can be reverted if/when we no longer have options that disable
 	# others.
 	show with SRC_ENV_CONF=/dev/null | sort | sed 's/$/=/' > $t/src.conf
 	show settings SRC_ENV_CONF=$t/src.conf | sort > $t/config_WITH_ALL
 	show without SRC_ENV_CONF=/dev/null | sort > $t/config_WITHOUT_ALL
 	env_only_options="$(${make} MK_AUTO_OBJ=no -V __ENV_ONLY_OPTIONS)"
 
 	show_options |
 	while read opt targets ; do
 		if [ ! -f ${opt} ] ; then
 			echo "no description found for ${opt}, skipping" >&2
 			continue
 		fi
 
 		echo ".It Va ${opt}"
 		sed -e'/\$FreeBSD.*\$/d' ${opt}
 		if [ -n "${targets}" ] ; then
 			echo '.Pp'
 			echo 'This is a default setting on'
 			echo $(echo ${targets} | sed -e's/ /, /g' -e's/\(.*\), /\1 and /').
 		fi
 
 		if [ "${opt%%_*}" = 'WITHOUT' ] ; then
 			sed -n "/^WITH_${opt#WITHOUT_}$/!s/$/=/p" $t/config_WITH_ALL > $t/src.conf
 			show settings SRC_ENV_CONF=$t/src.conf -D${opt} | sort > $t/config_WITH_ALL_${opt}
 			comm -13 $t/config_WITH_ALL $t/config_WITH_ALL_${opt} | sed -n "/^${opt}$/!p" > $t/deps
 		elif [ "${opt%%_*}" = 'WITH' ] ; then
 			sed -n "/^WITHOUT${opt#WITH}$/!s/$/=/p" $t/config_WITHOUT_ALL > $t/src.conf
 			show settings SRC_ENV_CONF=$t/src.conf -D${opt} | sort > $t/config_WITHOUT_ALL_${opt}
 			comm -13 $t/config_WITHOUT_ALL $t/config_WITHOUT_ALL_${opt} | sed -n "/^${opt}$/!p" > $t/deps
 		else
 			echo 'internal error' >&2
 			exit 1
 		fi
 
 		show settings SRC_ENV_CONF=/dev/null -D${opt} | sort > $t/config_${opt}
 		comm -13 $t/config_default $t/config_${opt} | sed -n "/^${opt}$/!p" |
 		comm -13 $t/deps - > $t/deps2
 
 		havedeps=0
 		if [ -s $t/deps ] ; then
 			havedeps=1
 			echo 'When set, it enforces these options:'
 			echo '.Pp'
 			echo '.Bl -item -compact'
 			while read opt2 ; do
 				echo '.It'
 				echo ".Va ${opt2}"
 			done < $t/deps
 			echo '.El'
 		fi
 
 		if [ -s $t/deps2 ] ; then
 			if [ ${havedeps} -eq 1 ] ; then
 				echo '.Pp'
 			fi
 			echo 'When set, these options are also in effect:'
 			echo '.Pp'
 			echo '.Bl -inset -compact'
 			while read opt2 ; do
 				echo ".It Va ${opt2}"
 				noopt=$(echo ${opt2} | sed -e's/WITH_/WITHOUT_/;t' -e's/WITHOUT_/WITH_/')
 				echo '(unless'
 				echo ".Va ${noopt}"
 				echo 'is set explicitly)'
 			done < $t/deps2
 			echo '.El'
 		fi
 
 		case " ${env_only_options} " in
 			*\ ${opt#*_}\ *)
 				echo ".Pp"
 				echo "This must be set in the environment, make command line, or"
 				echo ".Pa /etc/src-env.conf ,"
 				echo "not"
 				echo ".Pa /etc/src.conf ."
 				;;
 		esac
 
 		printf "." >&2
 	done
 	printf "\n" >&2
 	cat <<EOF
 .El
 .Sh FILES
 .Bl -tag -compact -width Pa
 .It Pa /etc/src.conf
 .It Pa /etc/src-env.conf
 .It Pa /usr/share/mk/bsd.own.mk
 .El
 .Sh SEE ALSO
 .Xr make 1 ,
 .Xr make.conf 5 ,
 .Xr build 7 ,
 .Xr ports 7
 .Sh HISTORY
 The
 .Nm
 file appeared in
 .Fx 7.0 .
 .Sh AUTHORS
 This manual page was autogenerated by
 .An tools/build/options/makeman .
 EOF
 }
 
 main