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|
#!/bin/sh
#
# This file is in the public domain.
ident='$FreeBSD$'
#
# usage: show { settings | options } ...
#
show()
{
mode=$1; shift
case ${mode} in
settings)
yes_prefix=WITH
no_prefix=WITHOUT
;;
options)
yes_prefix=WITHOUT
no_prefix=WITH
;;
*)
echo "internal error" >/dev/stderr
exit 1
;;
esac
(
cd ../../..
make "$@" showconfig SRCCONF=/dev/null __MAKE_CONF=/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" >/dev/stderr
exit 1
;;
esac
done
}
main()
{
trap 'rm -f _defcfg _config _config2 _deps _deps2' exit
ident=${ident#$}
ident=${ident% $}
fbsdid='$'FreeBSD'$'
cat <<EOF
.\" DO NOT EDIT-- this file is automatically generated.
.\" from ${ident}
.\" ${fbsdid}
.Dd $(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 settings that will apply to every build involving 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 values of variables are ignored regardless of their setting;
even if they would be set to
.Dq Li FALSE
or
.Dq Li NO .
Just the existence of an option will cause
it to be honoured by
.Xr make 1 .
.Pp
The following list provides a name and short description for variables
that can be used for source builds.
.Bl -tag -width indent
EOF
show settings |sort >_defcfg
show options |
while read opt; do
if [ -f ${opt} ]; then
cat <<EOF
.It Va ${opt}
EOF
sed -e's/\$\(FreeBSD: .*\) \$/from \1/' ${opt}
else
echo "no description found for ${opt}, skipping" >/dev/stderr
continue
fi
show settings -D${opt} |sort >_config
comm -13 _defcfg _config |grep -v "^${opt}$" >_deps
if [ -s _deps ]; then
cat <<EOF
When set, it also enforces the following options:
.Pp
.Bl -item -compact
EOF
cat _deps |while read opt2; do
cat <<EOF
.It
.Va ${opt2}
EOF
show settings -D${opt} $(
echo ${opt2} |
sed -e's/^WITHOUT_/-DWITH_/' -e's/^WITH_/-DWITHOUT_/'
) |sort >_config2
comm -13 _config _config2 >_deps2
if [ -s _deps2 ]; then
cat <<EOF
(can be overridden with
.Va $(cat _deps2) )
EOF
fi
done
cat <<EOF
.El
EOF
fi
done
cat <<EOF
.El
.Sh FILES
.Bl -tag -compact
.It Pa /etc/src.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.
EOF
}
main
|