HardenedBSD/tools/build/options/makeman
Ed Maste 65fd76b5f5 makeman: extend duplicate option warning to OPT_ options
In a local tree I accidentally had OPT_INIT_ALL defaulting to zero in
userland and none in kernel.  This resulted in the INIT_ALL text
appearing twice in src.conf.5.

Reviewed by:	brooks
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D45184
2024-05-16 13:30:37 -04:00

423 lines
9.1 KiB
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#!/bin/sh
#
# This file is in the public domain.
#
# 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
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
case $var in
MK_*)
opt=${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
;;
OPT_*)
# ignore
;;
*)
echo "make showconfig broken: ${var} ${_} ${val} not MK_ or OPT_" >&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
requireds=`env -i ${make} -f ${srcdir}/share/mk/src.opts.mk \
-V '${__REQUIRED_OPTIONS:ts,}'`
env -i ${make} .MAKE.MODE=normal "$@" showconfig __MAKE_CONF=/dev/null \
SRCCONF=/dev/null |
while read var _ val ; do
case ${var} in
MK_*)
opt=${var#MK_}
case ,${requireds}, in
*,${opt},*)
continue
;;
esac
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
;;
OPT_*)
# ignore
;;
*)
echo "make showconfig broken: ${var} ${_} ${val} not MK_ or OPT_" >&2
exit 1
;;
esac
done
}
show_group_options()
{
env -i ${make} .MAKE.MODE=normal "$@" showconfig __MAKE_CONF=/dev/null \
SRCCONF=/dev/null |
while read var _ val ; do
case ${var} in
MK_*)
# ignore
;;
OPT_*)
opt=${var#OPT_}
echo ${opt}
;;
*)
echo "make showconfig broken: ${var} ${_} ${val} not MK_ or OPT_" >&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
.Va WITH_
and
.Va WITHOUT_
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
.Pp
The following options accept a single value from a list of valid values.
.Bl -tag -width indent
EOF
prev_opt=
show_group_options |
while read opt ; do
if [ ! -f ${opt} ] ; then
echo "no description found for ${opt}, skipping" >&2
continue
fi
if [ $opt = "$prev_opt" ]; then
echo "ignoring duplicate option $opt" >&2
continue
fi
prev_opt=$opt
echo ".It Va ${opt}"
cat ${opt}
done
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