autoconf/bin/autoheader.in

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#! @SHELL@
# -*- shell-script -*-
# autoheader -- create `config.h.in' from `configure.ac'
# Copyright 1992, 1993, 1994, 1996, 1998, 1999, 2000, 2001
# Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.
# Written by Roland McGrath.
me=`echo "$0" | sed -e 's,.*[/\\],,'`
usage="\
Usage: $0 [OPTION] ... [TEMPLATE-FILE]
Create a template file of C \`#define' statements for \`configure' to
use. To this end, scan TEMPLATE-FILE, or \`configure.ac' if present,
or else \`configure.in'.
-h, --help print this help, then exit
-V, --version print version number, then exit
-v, --verbose verbosely report processing
-d, --debug don't remove temporary files
-f, --force consider all the files are obsolete
-W, --warnings=CATEGORY report the warnings falling in CATEGORY
Warning categories include:
\`obsolete' obsolete constructs
\`all' all the warnings
\`no-CATEGORY' turn off the warnings on CATEGORY
\`none' turn off all the warnings
\`error' warnings are error
Library directories:
-A, --autoconf-dir=ACDIR Autoconf's macro files location (rarely needed)
-l, --localdir=DIR location of \`aclocal.m4' and \`acconfig.h'
Report bugs to <bug-autoconf@gnu.org>."
version="\
autoheader (@PACKAGE_NAME@) @VERSION@
Written by Roland McGrath.
Copyright 1992, 1993, 1994, 1996, 1998, 1999, 2000, 2001
Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
help="\
Try \`$me --help' for more information."
exit_missing_arg="\
echo \"$me: option \\\`\$1' requires an argument\" >&2
echo \"\$help\" >&2
exit 1"
# NLS nuisances.
# Only set these to C if already set. These must not be set unconditionally
# because not all systems understand e.g. LANG=C (notably SCO).
# Fixing LC_MESSAGES prevents Solaris sh from translating var values in `set'!
# Non-C LC_CTYPE values break the ctype check.
if test "${LANG+set}" = set; then LANG=C; export LANG; fi
if test "${LC_ALL+set}" = set; then LC_ALL=C; export LC_ALL; fi
if test "${LC_MESSAGES+set}" = set; then LC_MESSAGES=C; export LC_MESSAGES; fi
if test "${LC_CTYPE+set}" = set; then LC_CTYPE=C; export LC_CTYPE; fi
# Variables.
: ${autoconf_dir=${AC_MACRODIR=@datadir@}}
dir=`echo "$0" | sed -e 's,[^/]*$,,'`
# We test "$dir/autoconf" in case we are in the build tree, in which case
# the names are not transformed yet.
for autoconf in "$AUTOCONF" \
"$dir/@autoconf-name@" \
"$dir/autoconf" \
"@bindir@/@autoconf-name@"; do
test -f "$autoconf" && break
done
debug=false
localdir=.
force=false
status=0
tmp=
verbose=:
warning_all=false
warning_error=false
warning_obsolete=false
# Parse command line.
while test $# -gt 0 ; do
optarg=`expr "x$1" : 'x--[^=]*=\(.*\)' \| \
"x$1" : 'x-.\(.*\)'`
case $1 in
--version | -V )
echo "$version" ; exit 0 ;;
--help | -h )
echo "$usage"; exit 0 ;;
--debug | -d )
debug=:; shift ;;
--force | -f )
force=:; shift ;;
--verbose | -v )
verbose=echo
shift;;
--localdir=* | -l?* )
localdir=$optarg
shift ;;
--localdir | -l )
test $# = 1 && eval "$exit_missing_arg"
shift
localdir=$1
shift ;;
--autoconf-dir=* | -A?* )
autoconf_dir=$optarg
shift ;;
--autoconf-dir | -A )
test $# = 1 && eval "$exit_missing_arg"
shift
autoconf_dir=$1
shift ;;
--macrodir=* | -m?* )
echo "$me: warning: --macrodir is obsolete, use --autoconf-dir" >&2
autoconf_dir=$optarg
shift ;;
--macrodir | -m )
echo "$me: warning: --macrodir is obsolete, use --autoconf-dir" >&2
test $# = 1 && eval "$exit_missing_arg"
shift
autoconf_dir=$1
shift ;;
--warnings=* | -W?* )
warnings=$warnings,$optarg
shift ;;
--warnings | -W )
test $# = 1 && eval "$exit_missing_arg"
shift
warnings=$warnings,$1
shift ;;
-- ) # Stop option processing
shift; break ;;
- ) # Use stdin as input.
break ;;
-* )
exec >&2
echo "$me: invalid option $1"
echo "$help"
exit 1 ;;
* )
break ;;
esac
done
# The warnings are the concatenation of 1. application's defaults
# (here, none), 2. $WARNINGS, $3 command line options, in that order.
alphabet='abcdefghijklmnopqrstuvwxyz'
ALPHABET='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
_ac_warnings=
for warning in `IFS=,; echo $WARNINGS,$warnings | tr $ALPHABET $alphabet`
do
case $warning in
'' | ,) continue;;
no-*) eval warning_`expr x$warning : 'xno-\(.*\)'`=false;;
*) eval warning_$warning=:;;
esac
done
# Trap on 0 to stop playing with `rm'.
$debug ||
{
trap 'status=$?; rm -rf $tmp && exit $status' 0
trap '(exit 1); exit 1' 1 2 13 15
}
# Create a (secure) tmp directory for tmp files.
: ${TMPDIR=/tmp}
{
tmp=`(umask 077 && mktemp -d -q "$TMPDIR/ahXXXXXX") 2>/dev/null` &&
test -n "$tmp" && test -d "$tmp"
} ||
{
tmp=$TMPDIR/ah$$
(umask 077 && mkdir $tmp)
} ||
{
echo "$me: cannot create a temporary directory in $TMPDIR" >&2
(exit 1); exit 1
}
# Preach.
if ($warning_all || $warning_obsolete) &&
(test -f $config_h.top ||
test -f $config_h.bot ||
test -f $localdir/acconfig.h); then
sed -e "s/^ /$me: WARNING: /" >&2 <<\EOF
Using auxiliary files such as `acconfig.h', `config.h.bot'
and `config.h.top', to define templates for `config.h.in'
is deprecated and discouraged.
Using the third argument of `AC_DEFINE' and
`AC_DEFINE_UNQUOTED' allows to define a template without
`acconfig.h':
AC_DEFINE([NEED_MAIN], 1,
[Define if a function `main' is needed.])
More sophisticated templates can also be produced, see the
documentation.
EOF
$warning_error && { (exit 1); exit 1; }
fi
acconfigs=
test -r $localdir/acconfig.h && acconfigs="$acconfigs $localdir/acconfig.h"
# Find the input file.
case $# in
0)
case `ls configure.ac configure.in 2>/dev/null` in
*ac*in )
echo "$me: warning: both \`configure.ac' and \`configure.in' are present." >&2
echo "$me: warning: proceeding with \`configure.ac'." >&2
infile=configure.ac;;
*ac ) infile=configure.ac;;
*in ) infile=configure.in;;
* )
echo "$me: no input file" >&2
(exit 1); exit 1;;
esac
infilename=$infile
;;
1) if test "x$1" = "x-"; then
cat >$tmp/stdin
infile=$tmp/stdin
else
infile=$1
fi
infilename="Standard input"
;;
*) exec >&2
echo "$me: invalid number of arguments."
echo "$help"
(exit 1); exit 1;;
esac
# Set up autoconf.
autoconf="$autoconf -l $localdir "\
`$verbose "--verbose "`\
`$debug && echo "--debug "`
export autoconf_dir
# ----------------------- #
# Real work starts here. #
# ----------------------- #
# Source what the traces are trying to tell us.
$verbose $me: running $autoconf to trace from $infile >&2
$autoconf \
--trace AC_CONFIG_HEADERS:': $${config_h="$1"}' \
--trace AH_OUTPUT:'ac_verbatim_$1="\
$2"' \
--trace AC_DEFINE_TRACE_LITERAL:'syms="$$syms $1"' \
$infile >$tmp/traces.sh || { (exit 1); exit 1; }
$verbose $me: sourcing $tmp/traces.sh >&2
if (set -e && . $tmp/traces.sh) >/dev/null 2>&1; then
. $tmp/traces.sh
else
echo "$me: error: shell error while sourcing $tmp/traces.sh" >&2
(exit 1); exit 1
fi
# Make SYMS newline-separated rather than blank-separated, and remove dups.
# Start each symbol with a blank (to match the blank after "#undef")
# to reduce the possibility of mistakenly matching another symbol that
# is a substring of it.
# Beware that some of the symbols might actually be macro with arguments:
# keep only their name.
syms=`for sym in $syms; do echo $sym; done |
sed -e 's/(.*//' |
sort |
uniq |
sed -e 's@^@ @'`
# We template only the first CONFIG_HEADER.
config_h=`set X $config_h; echo $2`
# Support "outfile[:infile]", defaulting infile="outfile.in".
case "$config_h" in
"") echo "$me: error: AC_CONFIG_HEADERS not found in $infile" >&2
(exit 1); exit 1 ;;
*:*) config_h_in=`echo "$config_h" | sed 's/.*://'`
config_h=`echo "$config_h" | sed 's/:.*//'` ;;
*) config_h_in="$config_h.in" ;;
esac
# Don't write "do not edit" -- it will get copied into the
# config.h, which it's ok to edit.
cat <<EOF >$tmp/config.hin
/* $config_h_in. Generated automatically from $infilename by autoheader. */
EOF
# Dump the top.
test -r $config_h.top && cat $config_h.top >>$tmp/config.hin
# Dump `acconfig.h' but its bottom.
test -r $localdir/acconfig.h &&
sed '/@BOTTOM@/,$d;s/@TOP@//' $localdir/acconfig.h >>$tmp/config.hin
# Dump the templates from `configure.ac'.
for verb in `(set) 2>&1 | sed -n -e '/^ac_verbatim/s/^\([^=]*\)=.*$/\1/p' | sort`; do
eval value=\$$verb
cat >>$tmp/config.hin <<EOF
$value
EOF
done
# Handle the case where @BOTTOM@ is the first line of acconfig.h.
test -r $localdir/acconfig.h &&
grep @BOTTOM@ $localdir/acconfig.h >/dev/null &&
sed -n '/@BOTTOM@/,${/@BOTTOM@/!p;}' $localdir/acconfig.h >>$tmp/config.hin
test -f $config_h.bot && cat $config_h.bot >>$tmp/config.hin
# Check that all the symbols have a template.
$verbose $me: checking completeness of the template >&2
# Regexp for a white space.
w='[ ]'
if test -n "$syms"; then
for sym in $syms; do
if egrep "^#$w*[a-z]*$w$w*$sym($w*|$w.*)$" $tmp/config.hin >/dev/null; then
: # All is well.
else
echo "$me: No template for symbol \`$sym'" >&2
status=1
fi
done
fi
# If the run was successful, output the result.
if test $status = 0; then
if test $# = 0; then
# Output is a file
if test -f $config_h_in &&
cmp -s $tmp/config.hin $config_h_in &&
test "$force" != :; then
# File didn't change, so don't update its mod time.
echo "$me: $config_h_in is unchanged" >&2
else
mv -f $tmp/config.hin $config_h_in
fi
else
# Output is stdout
cat $tmp/config.hin
fi
fi
(exit $status); exit $status