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#!/bin/sh
# autoheader -- create `config.h.in' from `configure.in'
# Copyright (C) 1992, 1993, 1994 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., 675 Mass Ave, Cambridge, MA 02139, USA.
# Written by Roland McGrath.
# If given no args, create `config.h.in' from template file `configure.in'.
# With one arg, create a header file on standard output from
# the given template file.
usage="\
Usage: autoheader [-h] [--help] [-m dir] [--macrodir=dir]
[-l dir] [--localdir=dir] [--version] [template-file]"
# NLS nuisances.
# Only set `LANG' and `LC_ALL' to "C" if already set.
# These must not be set unconditionally because not all systems understand
# e.g. LANG=C (notably SCO).
if test "${LC_ALL+set}" = set; then LC_ALL=C; export LC_ALL; fi
if test "${LANG+set}" = set; then LANG=C; export LANG; fi
test -z "${AC_MACRODIR}" && AC_MACRODIR=@datadir@
test -z "${M4}" && M4=@M4@
case "${M4}" in
/*) # Handle the case that m4 has moved since we were configured.
# It may have been found originally in a build directory.
test -f "${M4}" || M4=m4 ;;
esac
localdir=.
show_version=no
while test $# -gt 0 ; do
case "${1}" in
-h | --help | --h* )
echo "${usage}"; exit 0 ;;
--localdir=* | --l*=* )
localdir="`echo \"${1}\" | sed -e 's/^[^=]*=//'`"
shift ;;
-l | --localdir | --l*)
shift
test $# -eq 0 && { echo "${usage}" 1>&2; exit 1; }
localdir="${1}"
shift ;;
--macrodir=* | --m*=* )
AC_MACRODIR="`echo \"${1}\" | sed -e 's/^[^=]*=//'`"
shift ;;
-m | --macrodir | --m* )
shift
test $# -eq 0 && { echo "${usage}" 1>&2; exit 1; }
AC_MACRODIR="${1}"
shift ;;
--version | --v* )
show_version=yes; shift ;;
-- ) # Stop option processing
shift; break ;;
- ) # Use stdin as input.
break ;;
-* )
echo "${usage}" 1>&2; exit 1 ;;
* )
break ;;
esac
done
if test $show_version = yes; then
version=`sed -n 's/define.AC_ACVERSION.[ ]*\([0-9.]*\).*/\1/p' \
$AC_MACRODIR/acgeneral.m4`
echo "Autoconf version $version"
exit 0
fi
TEMPLATES="${AC_MACRODIR}/acconfig.h"
test -r $localdir/acconfig.h && TEMPLATES="${TEMPLATES} $localdir/acconfig.h"
case $# in
0) infile=configure.in ;;
1) infile=$1 ;;
*) echo "$usage" >&2; exit 1 ;;
esac
config_h=config.h
syms=
types=
funcs=
headers=
libs=
if test "$localdir" != .; then
use_localdir="-I$localdir -DAC_LOCALDIR=$localdir"
else
use_localdir=
fi
# Use the frozen version of Autoconf if available.
r= f=
# Some non-GNU m4's don't reject the --help option, so give them /dev/null.
case `$M4 --help < /dev/null 2>&1` in
*reload-state*) test -r $AC_MACRODIR/autoheader.m4f && { r=--reload f=f; } ;;
*traditional*) ;;
*) echo Autoconf requires GNU m4 1.1 or later >&2; exit 1 ;;
esac
# Extract assignments of SYMS, TYPES, FUNCS, HEADERS, and LIBS from the
# modified autoconf processing of the input file. The sed hair is
# necessary to win for multi-line macro invocations.
eval "`$M4 -I$AC_MACRODIR $use_localdir $r autoheader.m4$f $infile |
sed -n -e '
: again
/^@@@.*@@@$/s/^@@@\(.*\)@@@$/\1/p
/^@@@/{
s/^@@@//p
n
s/^/@@@/
b again
}'`"
# 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.
syms="`for sym in $syms; do echo $sym; done | sort | uniq | sed 's@^@ @'`"
if test $# -eq 0; then
tmpout=autoh$$
trap "rm -f $tmpout; exit 1" 1 2 15
exec > $tmpout
fi
# Support "outfile[:infile]", defaulting infile="outfile.in".
case "$config_h" in
*:*) 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.
echo "/* ${config_h_in}. Generated automatically from $infile by autoheader. */"
test -r ${config_h}.top && cat ${config_h}.top
test -r $localdir/acconfig.h &&
grep @TOP@ $localdir/acconfig.h >/dev/null &&
sed '/@TOP@/,$d' $localdir/acconfig.h
# This puts each template paragraph on its own line, separated by @s.
if test -n "$syms"; then
# Make sure the boundary of template files is also the boundary
# of the paragraph. Extra newlines don't hurt since they will
# be removed.
for t in $TEMPLATES; do cat $t; echo; echo; done |
# The sed script is suboptimal because it has to take care of
# some broken seds (e.g. AIX) that remove '\n' from the
# pattern/hold space if the line is empty. (junio@twinsun.com).
sed -n -e '
/^[ ]*$/{
x
s/\n/@/g
p
s/.*/@/
x
}
H' | sed -e 's/@@*/@/g' |
# Select each paragraph that refers to a symbol we picked out above.
fgrep "$syms" |
tr @ \\012
fi
echo "$types" | tr , \\012 | sort | uniq | while read ctype; do
test -z "$ctype" && continue
# Solaris 2.3 tr rejects noncontiguous characters in character classes.
sym="`echo "${ctype}" | tr '[a-z] *' '[A-Z]_P'`"
echo "
/* The number of bytes in a ${ctype}. */
#undef SIZEOF_${sym}"
done
# /bin/sh on the Alpha gives `for' a random value if $funcs is empty.
if test -n "$funcs"; then
for func in `for x in $funcs; do echo $x; done | sort | uniq`; do
sym="`echo ${func} | sed 's/[^a-zA-Z0-9_]/_/g' | tr '[a-z]' '[A-Z]'`"
echo "
/* Define if you have the ${func} function. */
#undef HAVE_${sym}"
done
fi
if test -n "$headers"; then
for header in `for x in $headers; do echo $x; done | sort | uniq`; do
sym="`echo ${header} | sed 's/[^a-zA-Z0-9_]/_/g' | tr '[a-z]' '[A-Z]'`"
echo "
/* Define if you have the <${header}> header file. */
#undef HAVE_${sym}"
done
fi
if test -n "$libs"; then
for lib in `for x in $libs; do echo $x; done | sort | uniq`; do
sym="`echo ${lib} | sed 's/[^a-zA-Z0-9_]/_/g' | tr '[a-z]' '[A-Z]'`"
echo "
/* Define if you have the ${lib} library (-l${lib}). */
#undef HAVE_LIB${sym}"
done
fi
test -r $localdir/acconfig.h &&
grep @BOTTOM@ $localdir/acconfig.h >/dev/null &&
sed '1,/@BOTTOM@/d' $localdir/acconfig.h
test -f ${config_h}.bot && cat ${config_h}.bot
status=0
if test -n "$syms"; then
for sym in $syms; do
if fgrep $sym $TEMPLATES >/dev/null; then
: # All is well.
else
echo "$0: Symbol \`${sym}' is not covered by $TEMPLATES" >&2
status=1
fi
done
fi
if test $# -eq 0; then
if test $status -eq 0; then
if cmp -s $tmpout ${config_h_in}; then
rm -f $tmpout
else
mv -f $tmpout ${config_h_in}
fi
else
rm -f $tmpout
fi
fi
exit $status
|
