mirror of
git://git.sv.gnu.org/autoconf
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ab07ba8e08
* acgeneral.m4 (AC_INIT_PARSE_ARGS): Report and support -V. * autoconf.sh: Likewise. * autoreconf.sh: Likewise. * autoupdate.sh: Likewise. * autoheader.sh: Likewise. * autoscan.pl: Likewise. * ifnames.sh: Likewise. In addition, don't dump --help on invalid options. * doc/autoconf.texi: Adjusted. * doc/install.texi: Likewise.
280 lines
8.6 KiB
Plaintext
280 lines
8.6 KiB
Plaintext
#! @SHELL@
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# autoheader -- create `config.h.in' from `configure.in'
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# Copyright (C) 1992-94, 96, 98, 99, 2000 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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# 02111-1307, USA.
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# Written by Roland McGrath.
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# If given no args, create `config.h.in' from template file `configure.in'.
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# With one arg, create a header file on standard output from
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# the given template file.
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me=`echo "$0" | sed -e 's,.*/,,'`
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usage="\
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Usage: $0 [OPTION] ... [TEMPLATE-FILE]
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Create a template file of C \`#define' statements for \`configure' to
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use. To this end, scan TEMPLATE-FILE, or \`configure.in' if none
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given.
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-h, --help print this help, then exit
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-V, --version print version number, then exit
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-v, --verbose verbosely report processing
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-d, --debug don't remove temporary files
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-m, --macrodir=DIR directory storing Autoconf's macro files
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-l, --localdir=DIR directory storing \`aclocal.m4' and \`acconfig.h'
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Report bugs to <bug-autoconf@gnu.org>."
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version="\
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autoheader (GNU @PACKAGE@) @VERSION@
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Written by Roland McGrath.
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Copyright (C) 1992-94, 96, 98, 99, 2000 Free Software Foundation, Inc.
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This is free software; see the source for copying conditions. There is NO
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warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
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help="\
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Try \`$me --help' for more information."
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# NLS nuisances.
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# Only set these to C if already set. These must not be set unconditionally
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# because not all systems understand e.g. LANG=C (notably SCO).
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# Fixing LC_MESSAGES prevents Solaris sh from translating var values in `set'!
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# Non-C LC_CTYPE values break the ctype check.
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if test "${LANG+set}" = set; then LANG=C; export LANG; fi
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if test "${LC_ALL+set}" = set; then LC_ALL=C; export LC_ALL; fi
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if test "${LC_MESSAGES+set}" = set; then LC_MESSAGES=C; export LC_MESSAGES; fi
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if test "${LC_CTYPE+set}" = set; then LC_CTYPE=C; export LC_CTYPE; fi
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test -z "${AC_MACRODIR}" && AC_MACRODIR=@datadir@
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test -z "${M4}" && M4=@M4@
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case "${M4}" in
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/*) # Handle the case that m4 has moved since we were configured.
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# It may have been found originally in a build directory.
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test -f "${M4}" || M4=m4 ;;
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esac
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# ac_LF_and_DOT
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# We use echo to avoid assuming a particular line-breaking character.
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# The extra dot is to prevent the shell from consuming trailing
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# line-breaks from the sub-command output. A line-break within
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# single-quotes doesn't work because, if this script is created in a
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# platform that uses two characters for line-breaks (e.g., DOS), tr
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# would break.
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ac_LF_and_DOT=`echo; echo .`
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localdir=.
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debug=false
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# Basename for temporary files.
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: ${TMPDIR=/tmp}
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ah_base=$TMPDIR/ah$$
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tmpout=$ah_base.out
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while test $# -gt 0 ; do
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case "$1" in
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-h | --help | --h* )
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echo "$usage"; exit 0 ;;
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--version | --v* )
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echo "$version"; exit 0 ;;
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-d | --debug | --d* )
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debug=:; shift ;;
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--localdir=* | --l*=* )
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localdir=`echo "$1" | sed -e 's/^[^=]*=//'`
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shift ;;
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-l | --localdir | --l*)
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shift
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test $# -eq 0 && { echo "$help" >&2; exit 1; }
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localdir=$1
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shift ;;
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--macrodir=* | --m*=* )
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AC_MACRODIR=`echo "$1" | sed -e 's/^[^=]*=//'`
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shift ;;
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-m | --macrodir | --m* )
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shift
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test $# -eq 0 && { echo "$help" >&2; exit 1; }
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AC_MACRODIR=$1
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shift ;;
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-- ) # Stop option processing
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shift; break ;;
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- ) # Use stdin as input.
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break ;;
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-* )
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exec >&2
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echo "$me: invalid option $1"
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echo "$help"
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exit 1 ;;
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* )
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break ;;
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esac
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done
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acconfigs=
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test -r $localdir/acconfig.h && acconfigs="$acconfigs $localdir/acconfig.h"
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case $# in
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0) infile=configure.in ;;
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1) infile=$1 ;;
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*) exec >&2
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echo "$me: invalid number of arguments."
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echo "$help"
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exit 1 ;;
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esac
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config_h=
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syms=
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if test "$localdir" != .; then
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use_localdir="-I$localdir -DAC_LOCALDIR=$localdir"
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else
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use_localdir=
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fi
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# Some non-GNU m4's don't reject the --help option, so give them /dev/null.
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case `$M4 --help < /dev/null 2>&1` in
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*reload-state*);;
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*) echo "$me: Autoconf requires GNU m4 1.4 or later" >&2; exit 1 ;;
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esac
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run_m4="$M4 --reload $AC_MACRODIR/autoheader.m4f $use_localdir"
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# Trap on 0 to stop playing with `rm'.
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$debug || trap "rm -f $ah_base*" 0 1 2 15
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# Extract assignments of `ah_verbatim_SYMBOL' from the modified
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# autoconf processing of the input file. The sed hair is necessary to
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# win for multi-line macro invocations.
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$run_m4 $infile >$ah_base.exp
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sed -n -e '
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: again
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/^@@@.*@@@$/s/^@@@\(.*\)@@@$/\1/p
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/^@@@/{
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s/^@@@//p
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n
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s/^/@@@/
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b again
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}' $ah_base.exp >$ah_base.decls
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. $ah_base.decls
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$debug || rm $ah_base.exp $ah_base.decls
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# Make SYMS newline-separated rather than blank-separated, and remove dups.
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# Start each symbol with a blank (to match the blank after "#undef")
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# to reduce the possibility of mistakenly matching another symbol that
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# is a substring of it.
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syms=`for sym in $syms; do echo $sym; done | sort | uniq | sed 's@^@ @'`
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# Support "outfile[:infile]", defaulting infile="outfile.in".
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case "$config_h" in
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"") echo "$me: error: AC_CONFIG_HEADERS not found in $infile" >&2; exit 1 ;;
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*:*) config_h_in=`echo "$config_h" | sed 's/.*://'`
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config_h=`echo "$config_h" | sed 's/:.*//'` ;;
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*) config_h_in="$config_h.in" ;;
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esac
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# Don't write "do not edit" -- it will get copied into the
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# config.h, which it's ok to edit.
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cat <<EOF >$tmpout
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/* $config_h_in. Generated automatically from $infile by autoheader. */
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EOF
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test -r ${config_h}.top && cat ${config_h}.top >>$tmpout
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test -r $localdir/acconfig.h &&
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grep @TOP@ $localdir/acconfig.h >/dev/null &&
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sed '/@TOP@/,$d' $localdir/acconfig.h >>$tmpout
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# This puts each template paragraph on its own line, separated by @s.
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if test -n "$syms"; then
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# Make sure the boundary of template files is also the boundary
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# of the paragraph. Extra newlines don't hurt since they will
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# be removed.
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# Stuff outside of @TOP@ and @BOTTOM@ is ignored in all the acconfig.hs.
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for t in $acconfigs; do
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sedscript=""
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grep @TOP@ $t >/dev/null && sedscript="1,/@TOP@/d;"
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grep @BOTTOM@ $t >/dev/null && sedscript="$sedscript /@BOTTOM@/,\$d;"
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# This substitution makes "#undef<TAB>FOO" in acconfig.h work.
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sed -n -e "$sedscript s/ / /g; p" $t
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echo; echo
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done |
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# The sed script is suboptimal because it has to take care of
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# some broken seds (e.g. AIX) that remove '\n' from the
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# pattern/hold space if the line is empty. (junio@twinsun.com).
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sed -n -e '
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/^[ ]*$/{
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x
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s/\n/@/g
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p
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s/.*/@/
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x
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}
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H' | sed -e 's/@@*/@/g' |
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# Select each paragraph that refers to a symbol we picked out above.
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# Some fgrep's have limits on the number of lines that can be in the
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# pattern on the command line, so use a temporary file containing the
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# pattern.
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(fgrep_tmp=$ah_base.fgrep
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cat > $fgrep_tmp <<EOF
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$syms
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EOF
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fgrep -f $fgrep_tmp
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rm -f $fgrep_tmp) |
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tr @. "$ac_LF_and_DOT" >>$tmpout
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fi
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for verb in `(set) 2>&1 | sed -n -e '/^ac_verbatim/s/^\([^=]*\)=.*$/\1/p'`; do
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echo >>$tmpout
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eval echo >>$tmpout '"${'$verb'}"'
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done
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# Handle the case where @BOTTOM@ is the first line of acconfig.h.
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test -r $localdir/acconfig.h &&
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grep @BOTTOM@ $localdir/acconfig.h >/dev/null &&
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sed -n '/@BOTTOM@/,${/@BOTTOM@/!p;}' $localdir/acconfig.h >>$tmpout
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test -f ${config_h}.bot && cat ${config_h}.bot >>$tmpout
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# Check that all the symbols have a template
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status=0
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if test -n "$syms"; then
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for sym in $syms; do
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if grep "^#[a-z]*[ ][ ]*$sym[ ]*$" $tmpout >/dev/null; then
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: # All is well.
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else
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echo "$0: No template for symbol \`$sym'" >&2
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status=1
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fi
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done
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fi
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# If the run was successful, output the result.
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if test $status -eq 0; then
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if test $# -eq 0; then
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# Output is a file
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if test -f $config_h_in && cmp -s $tmpout $config_h_in; then
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# File didn't change, so don't update its mod time.
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echo "$0: $config_h_in is unchanged" >&2
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else
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mv -f $tmpout $config_h_in
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fi
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else
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# Output is stdout
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cat $tmpout
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fi
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fi
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exit $status
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