autoconf.sh

   1 #!/bin/sh
   2 # autoconf -- create `configure' using m4 macros
   3 # Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
   4
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 2, or (at your option)
   8 # any later version.
   9
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program; if not, write to the Free Software
  17 # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18
  19 # If given no args, create `configure' from template file `configure.in'.
  20 # With one arg, create a configure script on standard output from
  21 # the given template file.
  22
  23 usage="\
  24 Usage: autoconf [-h] [--help] [-m dir] [--macrodir=dir]
  25        [-l dir] [--localdir=dir] [--version] [template-file]"
  26
  27 # NLS nuisances.
  28 # Only set `LANG' and `LC_ALL' to "C" if already set.
  29 # These must not be set unconditionally because not all systems understand
  30 # e.g. LANG=C (notably SCO).
  31 if test "${LC_ALL+set}" = set; then LC_ALL=C; export LC_ALL; fi
  32 if test "${LANG+set}"   = set; then LANG=C;   export LANG;   fi
  33
  34 test -z "${AC_MACRODIR}" && AC_MACRODIR=@datadir@
  35 test -z "${M4}" && M4=@M4@
  36 case "${M4}" in
  37 /*) # Handle the case that m4 has moved since we were configured.
  38     # It may have been found originally in a build directory.
  39     test -f "${M4}" || M4=m4 ;;
  40 esac
  41
  42 tmpout=/tmp/acout.$$
  43 localdir=
  44 show_version=no
  45
  46 while test $# -gt 0 ; do
  47    case "${1}" in
  48       -h | --help | --h* )
  49          echo "${usage}" 1>&2; exit 0 ;;
  50       --localdir=* | --l*=* )
  51          localdir="`echo \"${1}\" | sed -e 's/^[^=]*=//'`"
  52          shift ;;
  53       -l | --localdir | --l*)
  54          shift
  55          test $# -eq 0 && { echo "${usage}" 1>&2; exit 1; }
  56          localdir="${1}"
  57          shift ;;
  58       --macrodir=* | --m*=* )
  59          AC_MACRODIR="`echo \"${1}\" | sed -e 's/^[^=]*=//'`"
  60          shift ;;
  61       -m | --macrodir | --m* )
  62          shift
  63          test $# -eq 0 && { echo "${usage}" 1>&2; exit 1; }
  64          AC_MACRODIR="${1}"
  65          shift ;;
  66       --version | --v* )
  67          show_version=yes; shift ;;
  68       -- )     # Stop option processing
  69         shift; break ;;
  70       - )       # Use stdin as input.
  71         break ;;
  72       -* )
  73         echo "${usage}" 1>&2; exit 1 ;;
  74       * )
  75         break ;;
  76    esac
  77 done
  78
  79 if test $show_version = yes; then
  80   version=`sed -n 's/define.AC_ACVERSION.[      ]*\([0-9.]*\).*/\1/p' \
  81     $AC_MACRODIR/acgeneral.m4`
  82   echo "Autoconf version $version"
  83   exit 0
  84 fi
  85
  86 case $# in
  87   0) infile=configure.in ;;
  88   1) infile="$1" ;;
  89   *) echo "$usage" >&2; exit 1 ;;
  90 esac
  91
  92 trap 'rm -f $tmpin $tmpout; exit 1' 1 2 15
  93
  94 tmpin=/tmp/acin.$$ # Always set this, to avoid bogus errors from some rm's.
  95 if test z$infile = z-; then
  96   infile=$tmpin
  97   cat > $infile
  98 elif test ! -r "$infile"; then
  99   echo "autoconf: ${infile}: No such file or directory" >&2
 100   exit 1
 101 fi
 102
 103 if test -n "$localdir"; then
 104   use_localdir="-I$localdir -DAC_LOCALDIR=$localdir"
 105 else
 106   use_localdir=
 107 fi
 108
 109 # Use the frozen version of Autoconf if available.
 110 r= f=
 111 # Some non-GNU m4's don't reject the --help option, so give them /dev/null.
 112 case `$M4 --help < /dev/null 2>&1` in
 113 *reload-state*) test -r $AC_MACRODIR/autoconf.m4f && { r=--reload f=f; } ;;
 114 *traditional*) ;;
 115 *) echo Autoconf requires GNU m4 1.1 or later >&2; rm -f $tmpin; exit 1 ;;
 116 esac
 117
 118 $M4 -I$AC_MACRODIR $use_localdir $r autoconf.m4$f $infile > $tmpout ||
 119   { rm -f $tmpin $tmpout; exit 2; }
 120
 121 # You could add your own prefixes to pattern if you wanted to check for
 122 # them too, e.g. pattern="AC_\|ILT_", except that UNIX sed doesn't do
 123 # alternation.
 124 pattern="AC_"
 125
 126 status=0
 127 if grep "${pattern}" $tmpout > /dev/null 2>&1; then
 128   echo "autoconf: Undefined macros:" >&2
 129   grep "${pattern}" $tmpout | sed "s/.*\(${pattern}[_A-Z0-9]*\).*/\1/" |
 130     while read name; do
 131       grep -n $name $infile /dev/null
 132     done | sort -u >&2
 133   status=1
 134 fi
 135
 136 if test $# -eq 0; then
 137   exec 4> configure; chmod +x configure
 138 else
 139   exec 4>&1
 140 fi
 141
 142 # Put the real line numbers into configure to make config.log more helpful.
 143 awk '
 144 /__oline__/ { printf "%d:", NR + 1 }
 145            { print }
 146 ' $tmpout | sed '
 147 /__oline__/s/^\([0-9][0-9]*\):\(.*\)__oline__\(.*\)$/\2\1\3/
 148 ' >&4
 149
 150 rm -f $tmpout
 151
 152 exit $status