mirror of
git://git.sv.gnu.org/autoconf
synced 2024-11-21 01:01:48 +08:00
49ec438253
* autoheader.sh: No longer try to select the needed paragraphs of `acconfig.h', just dump everything into `config.h.in'. Implement support for `--warnings'. Warn the users that these auxiliary files are obsolete when `-W obsolete'. * doc/autoconf.texi (Invoking autoheader): Adjust.
608 lines
18 KiB
Plaintext
608 lines
18 KiB
Plaintext
#! @SHELL@
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# autoconf -- create `configure' using m4 macros
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# Copyright (C) 1992, 93, 94, 96, 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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# If given no args, create `configure' from template file `configure.in'.
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# With one arg, create a configure script 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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Generate a configuration script from a TEMPLATE-FILE if given, or
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\`configure.in' by default. Output is sent to the standard output if
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TEMPLATE-FILE is given, else into \`configure'.
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Operation modes:
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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 the \`aclocal.m4' file
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-o, --output=FILE save output in FILE (stdout is the default)
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-W, --warnings=CATEGORY report the warnings falling in CATEGORY
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Warning categories include:
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\`cross' cross compilation issues
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\`obsolete' obsolete constructs
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\`syntax' dubious syntactic constructs
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\`all' all the warnings
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\`error' warnings are error
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Tracing:
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-t, --trace=MACRO report the list of calls to MACRO
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-i, --initialization also trace Autoconf's initialization process
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In tracing mode, no configuration script is created.
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Report bugs to <bug-autoconf@gnu.org>."
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version="\
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autoconf (GNU @PACKAGE@) @VERSION@
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Written by David J. MacKenzie.
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Copyright (C) 1992, 93, 94, 96, 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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# 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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# Find GNU m4.
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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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: ${M4=@M4@}
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case "$M4" in
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/*) test -f "$M4" || M4=m4 ;;
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esac
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# Some non-GNU m4's don't reject the --help option, so give them /dev/null.
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case `$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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# Variables.
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: ${AC_MACRODIR=@datadir@}
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: ${AC_ACLOCALDIR=`(aclocal --print-ac-dir) 2>/dev/null`}
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: ${AWK=@AWK@}
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debug=false
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# Trace Autoconf's initialization?
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initialization=false
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localdir=
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outfile=
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# Exit status.
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status=0
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# Tasks:
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# - install
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# Install links to the needed *.m4 extensions.
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# - trace
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# Trace the first arguments of some macros
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# - script
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# Produce the configure script (default)
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task=script
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tmp=
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verbose=:
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# Parse command line
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while test $# -gt 0 ; do
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case "$1" in
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--version | --vers* | -V )
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echo "$version" ; exit 0 ;;
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--help | --h* | -h )
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echo "$usage"; exit 0 ;;
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--debug | --d* | -d )
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debug=:; shift ;;
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--verbose | --verb* | -v )
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verbose=echo
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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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--localdir | --l* | -l )
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shift
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test $# = 0 && { echo "$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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--macrodir | --m* | -m )
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shift
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test $# = 0 && { echo "$help" >&2; exit 1; }
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AC_MACRODIR=$1
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shift ;;
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--install )
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task=install
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shift;;
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--trace | -t )
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task=trace
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shift
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test $# = 0 && { echo "$help" >&2; exit 1; }
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traces="$traces '"`echo "$1" | sed "s/'/'\\\\\\\\''/g"`"'"
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shift ;;
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--trace=* )
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task=trace
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traces="$traces '"`echo "$1" |
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sed -e "s/^[^=]*=//;s/:.*//;s/'/'\\\\\\\\''/g"`"'"
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shift ;;
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--initialization | -i )
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initialization=:
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shift;;
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--output | -o )
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shift
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test $# = 0 && { echo "$help" >&2; exit 1; }
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outfile=$1
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shift ;;
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--output=* )
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outfile=`echo "$1" | sed -e 's/^[^=]*=//'`
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shift ;;
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--warnings | -W )
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shift
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test $# = 0 && { echo "$help" >&2; exit 1; }
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warnings="$warnings "`echo $1 | sed -e 's/,/ /g'`
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shift ;;
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--warnings=* )
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warnings="$warnings "`echo "$1" | sed -e 's/^[^=]*=//;s/,/ /g'`
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shift ;;
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-W* ) # People are used to -Wall, -Werror etc.
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warnings="$warnings "`echo "$1" | sed -e 's/^-W//;s/,/ /g'`
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shift ;;
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-- ) # Stop option processing
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shift; break ;;
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- ) # Use stdin as input.
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break ;;
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-* )
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exec >&2
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echo "$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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# Support $WARNINGS.
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: ${warnings=`echo $WARNINGS | sed -e 's/,/ /g'`}
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# Trap on 0 to stop playing with `rm'.
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$debug ||
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{
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trap 'status=$?; rm -rf $tmp && exit $status' 0
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trap 'exit $?' 1 2 13 15
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}
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# Create a (secure) tmp directory for tmp files.
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: ${TMPDIR=/tmp}
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{
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tmp=`(umask 077 && mktemp -d -q "$TMPDIR/acXXXXXX") 2>/dev/null` &&
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test -n "$tmp"
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} ||
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{
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tmp=$TMPDIR/ac$$ && (umask 077 && mkdir $tmp)
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} ||
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{
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echo "$me: cannot create a temporary directory in $TMPDIR" >&2
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exit 1;
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}
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# Running m4.
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test -n "$localdir" && use_localdir="-I$localdir"
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run_m4="$M4 $use_localdir -I $AC_MACRODIR autoconf.m4"
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run_m4f="$M4 $use_localdir --reload $AC_MACRODIR/autoconf.m4f"
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# Find the input file.
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case $# in
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0) infile=configure.in
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test $task = script && test "x$outfile" = x && outfile=configure;;
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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 "$help"
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exit 1 ;;
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esac
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# We need an actual file.
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if test z$infile = z-; then
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infile=$tmp/stdin
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cat >$infile
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elif test ! -r "$infile"; then
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echo "$me: $infile: No such file or directory" >&2
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exit 1
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fi
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# Output is produced into FD 4. Prepare it.
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case "x$outfile" in
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x- | x ) # Output to stdout
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exec 4>&1 ;;
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* )
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exec 4>$outfile;;
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esac
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# Initializations are performed. Proceed to the main task.
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case $task in
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## --------------------------------- ##
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## Generate the `configure' script. ##
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## --------------------------------- ##
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script)
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# Enable the requested warnings.
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warnings_opt=`echo "$warnings" |
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sed -e 's/\([^ ][^ ]*\)/-DAC_WARNING_ENABLE(\1) /g'`
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$run_m4f $warnings_opt $infile >$tmp/configure || exit 2
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# You could add your own prefixes to pattern if you wanted to check for
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# them too, e.g. pattern='\(AC_\|ILT_\)', except that UNIX sed doesn't do
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# alternation.
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pattern="A[CHM]_"
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if grep "^[^#]*$pattern" $tmp/configure >/dev/null 2>&1; then
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echo "$me: undefined macros:" >&2
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sed -n "s/^[^#]*\\($pattern[_A-Za-z0-9]*\\).*/\\1/p" $tmp/configure |
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while read macro; do
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grep -n "^[^#]*$macro" $infile /dev/null
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test $? = 1 && echo "***BUG in Autoconf--please report*** $macro"
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done | sort -u >&2
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status=1
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fi
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if test -n "$outfile"; then
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chmod +x $outfile
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fi
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# Put the real line numbers into configure to make config.log more
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# helpful. Because quoting can sometimes get really painful in m4,
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# there are special @tokens@ to substitute.
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$AWK '
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{
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sub(/[ ]*$/, "")
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if ($0 == "")
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{
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if (!duplicate)
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print
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duplicate = 1
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next
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}
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duplicate = 0
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oline++
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if ($0 ~ /__oline__/)
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while (sub(/__oline__/, oline))
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continue
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while (sub(/@<:@/, "["))
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continue
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while (sub(/@:>@/, "]"))
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continue
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while (sub(/@S\|@/, "$"))
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continue
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while (sub(/@%:@/, "#"))
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continue
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print
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}' <$tmp/configure >&4
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;; # End of the task script.
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## -------------- ##
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## Trace macros. ##
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## -------------- ##
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trace)
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# A program to trace m4 macros.
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cat >$tmp/trace.m4 <<\EOF
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divert(-1)
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changequote([, ])
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# _MODE(SEPARATOR, ELT1, ELT2...)
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# -------------------------------
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# List the elements, separating then with SEPARATOR.
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# MODE can be:
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# `at' -- the elements are enclosed in brackets.
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# `star' -- the elements are listed as are.
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# `percent' -- the elements are `smashed': spaces are singled out,
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# and no new line remains.
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define([_at],
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[ifelse([$#], [1], [],
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[$#], [2], [[[$2]]],
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[[[$2]][$1]$0([$1], shift(shift($@)))])])
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define([_percent],
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[ifelse([$#], [1], [],
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[$#], [2], [smash([$2])],
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[smash([$2])[$1]$0([$1], shift(shift($@)))])])
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define([_star],
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[ifelse([$#], [1], [],
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[$#], [2], [[$2]],
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[[$2][$1]$0([$1], shift(shift($@)))])])
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# Smash quotes its result.
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define([smash],
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[patsubst(patsubst(patsubst([[[$1]]],
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[\\
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]),
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[[
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]+],
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[ ]),
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[^ *\(.*\) *$], [[\1]])])
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define([args], [shift(shift(shift(shift(shift($@)))))])
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define([at], [_$0([$1], args($@))])
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define([percent], [_$0([$1], args($@))])
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define([star], [_$0([$1], args($@))])
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EOF
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# A program to translate user tracing requests into m4 macros.
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cat >$tmp/translate.awk <<\EOF
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function trans (arg, sep)
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{
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# File name.
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if (arg == "f")
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return "$1"
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# Line number.
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if (arg == "l")
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return "$2"
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# Depth.
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if (arg == "d")
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return "$3"
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# Name (also available as $0).
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if (arg == "n")
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return "$4"
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# Escaped dollar.
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if (arg == "$")
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return "$"
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# $@, list of quoted effective arguments.
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if (arg == "@")
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return "]at([" (separator ? separator : ",") "], $@)["
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# $*, list of unquoted effective arguments.
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if (arg == "*")
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return "]star([" (separator ? separator : ",") "], $@)["
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# $%, list of smashed unquoted effective arguments.
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if (arg == "%")
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return "]percent([" (separator ? separator : ":") "], $@)["
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}
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function error (message)
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{
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print message | "cat >&2"
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exit 1
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}
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{
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# Accumulate the whole input.
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request = request $0 "\n"
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}
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END {
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# Chomp.
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request = substr (request, 1, length (request) - 1)
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# The default request is `$f:$l:$n:$*'.
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colon = index (request, ":")
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macro = colon ? substr (request, 1, colon - 1) : request
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request = colon ? substr (request, colon + 1) : "$f:$l:$n:$%"
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res = ""
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for (cp = request; cp; cp = substr (cp, 2))
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{
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char = substr (cp, 1, 1)
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if (char == "$")
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{
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if (match (cp, /^\$[0-9]+/))
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{
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# $n -> $(n + 4)
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res = res "$" (substr (cp, 2, RLENGTH - 1) + 4)
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cp = substr (cp, RLENGTH)
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}
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else if (substr (cp, 2, 1) ~ /[fldn$@%*]/)
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{
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# $x, no separator given.
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res = res trans(substr (cp, 2, 1))
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cp = substr (cp, 2)
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}
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else if (substr (cp, 2, 1) == "{")
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{
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# ${sep}x, long separator.
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end = index (cp, "}")
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if (!end)
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error("invalid escape: " cp)
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separator = substr (cp, 3, end - 3)
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if (substr (cp, end + 1, 1) ~ /[*@%]/)
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res = res trans(substr (cp, end + 1, 1), separator)
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else
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error("invalid escape: " cp)
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cp = substr (cp, end + 1)
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}
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else if (substr (cp, 3, 1) ~ /[*@%]/)
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{
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# $sx, short separator `s'.
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res = res trans(substr (cp, 3, 1), substr (cp, 2, 1))
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cp = substr(cp, 3)
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}
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else
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{
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error("invalid escape: " substr (cp, 1, 2))
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}
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}
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else
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res = res char
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}
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# Produce the definition of AT_<MACRO> = the translation of the request.
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print "define([AT_" macro "], [[" res "]])"
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close("cat >&2")
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}
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EOF
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# Extract both the m4 program and the m4 options from TRACES.
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eval set dummy "$traces"
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shift
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for trace
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do
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# The request may be several lines long, hence sed has to quit.
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trace_opt="$trace_opt -t "`echo "$trace" | sed -e 's/:.*//;q'`
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echo "$trace" | $AWK -f $tmp/translate.awk >>$tmp/trace.m4 || exit 1
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done
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echo "divert(0)dnl" >>$tmp/trace.m4
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# Do we trace the initialization?
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# `errprint' must be silent, otherwise there can be warnings mixed
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# with traces in m4's stderr.
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if $initialization; then
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run_m4_trace="$run_m4 $trace_opt -daflq -Derrprint"
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else
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run_m4_trace="$run_m4f $trace_opt -daflq -Derrprint"
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fi
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# Run m4 on the input file to get traces.
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$verbose "Running $run_m4_trace $infile | $M4 $tmp/trace.m4" >&2
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$run_m4_trace $infile 2>&1 >/dev/null |
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sed -e 's/^m4trace:\([^:][^:]*\):\([0-9][0-9]*\): -\([0-9][0-9]*\)- \([^(][^(]*\)(\(.*\)$/AT_\4([\1], [\2], [\3], [\4], \5/' \
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-e 's/^m4trace:\([^:][^:]*\):\([0-9][0-9]*\): -\([0-9][0-9]*\)- \(.*\)$/AT_\4([\1], [\2], [\3], [\4])/' |
|
|
# Now we are ready to run m4 to process the trace file.
|
|
$M4 $tmp/trace.m4 - |
|
|
# It makes no sense to try to transform __oline__.
|
|
sed '
|
|
s/@<:@/[/g
|
|
s/@:>@/]/g
|
|
s/@S|@/$/g
|
|
s/@%:@/#/g
|
|
' >&4
|
|
;;
|
|
|
|
|
|
|
|
|
|
## -------------------------------------------------------- ##
|
|
## Task --install. Install links to the library m4 files. ##
|
|
## -------------------------------------------------------- ##
|
|
install)
|
|
# An m4 program that reports what macros are requested, and where
|
|
# they were defined.
|
|
cat >$tmp/request.m4 <<\EOF
|
|
dnl Keep the definition of the old AC_DEFUN
|
|
define([AC_DEFUN_OLD], defn([AC_DEFUN]))
|
|
|
|
dnl Define the macro so that the first time it is expanded, it reports
|
|
dnl on stderr its name, and where it was defined.
|
|
define([AC_DEFUN],
|
|
[AC_DEFUN_OLD([$1],
|
|
[ifdef([AC_DECLARED{$1}],,
|
|
[define([AC_DECLARED{$1}])errprint(]]__file__:__line__:[[ [$1]
|
|
)])dnl
|
|
][$2])])
|
|
|
|
dnl All the includes must be disabled. If they are not, since people don't
|
|
dnl protect the first argument of AC_DEFUN, then, if read a second time
|
|
dnl this argument will be expanded, and we'll get pure junk out of m4.
|
|
define([AC_INCLUDE])
|
|
EOF
|
|
|
|
# Run m4 with all the library files, discard stdout, save stderr in
|
|
# $requested.
|
|
run_m4_request="$run_m4f -dipa -t m4_include -t m4_sinclude $tmp/request.m4"
|
|
$verbose $run_m4_request $localdir/*.m4 $AC_ACLOCALDIR/*.m4 $infile >&2
|
|
$run_m4_request $localdir/*.m4 $AC_ACLOCALDIR/*.m4 $infile 2>&1 >/dev/null |
|
|
# Keep only the good lines, there may be other outputs
|
|
grep '^[^: ]*:[0-9][0-9]*:[^:]*$' >$tmp/requested
|
|
|
|
# Extract the files that are not in the local dir, and install the links.
|
|
# Save in `installed' the list of installed links.
|
|
$verbose "Required macros:" >&2
|
|
$verbose "`sed -e 's/^/| /' $tmp/requested`" >&2
|
|
cat $tmp/requested |
|
|
while read line
|
|
do
|
|
file=`echo "$line" | sed -e 's/:.*//'`
|
|
filename=`echo "$file" | sed -e 's,.*/,,'`
|
|
macro=`echo "$line" | sed -e 's/.*:[ ]*//'`
|
|
if test -f "$file" && test "x$file" != "x$infile"; then
|
|
if test -f $localdir/$filename; then
|
|
$verbose "$filename already installed" >&2
|
|
else
|
|
$verbose "installing $file which provides $macro" >&2
|
|
ln -s "$file" "$localdir/$filename" ||
|
|
cp "$file" "$localdir/$filename" ||
|
|
{
|
|
echo "$me: cannot link from $file to $localdir/$filename" >&2
|
|
exit 1
|
|
}
|
|
fi
|
|
echo "$localdir/$filename" >>$tmp/installed
|
|
fi
|
|
done
|
|
# Now that we have installed the links, and that we know that the
|
|
# user needs the FILES, check that there is an exact correspondence.
|
|
# Use yourself to get the list of the included files.
|
|
export AC_ACLOCALDIR
|
|
export AC_MACRODIR
|
|
# Not m4_s?include, because it would catch acsite and aclocal, which
|
|
# we don't care about.
|
|
$0 -l "$localdir" -t AC_INCLUDE:'$1' $infile |
|
|
sort |
|
|
uniq >$tmp/included
|
|
# All the included files are needed.
|
|
for file in `cat $tmp/included`;
|
|
do
|
|
if fgrep "$file" $tmp/installed >/dev/null 2>&1; then :; else
|
|
echo "\`$file' is uselessly included" >&2
|
|
fi
|
|
done
|
|
# All the needed files are included.
|
|
for file in `sort $tmp/installed | uniq`;
|
|
do
|
|
if fgrep "$file" $tmp/included >/dev/null 2>&1; then :; else
|
|
echo "\`$file' is not included" >&2
|
|
fi
|
|
done
|
|
;;
|
|
|
|
|
|
|
|
## ------------ ##
|
|
## Unknown task ##
|
|
## ------------ ##
|
|
|
|
*)echo "$me: internal error: unknown task: $task" >&2
|
|
exit 1
|
|
esac
|
|
|
|
exit $status
|