autoconf/autoreconf.sh

#! @SHELL@
# autoreconf - remake all Autoconf configure scripts in a directory tree
# Copyright (C) 1994, 99, 2000 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.

me=`echo "$0" | sed -e 's,.*/,,'`

usage="\
Usage: $0 [OPTION] ... [TEMPLATE-FILE]

Run \`autoconf' (and \`autoheader', \`aclocal' and \`automake', where
appropriate) repeatedly to remake the Autoconf \`configure' scripts
and configuration header templates in the directory tree rooted at the
current directory.  By default, it only remakes those files that are
older than their predecessors.  If you install a new version of
Autoconf, running \`autoreconf' remakes all of the files by giving it
the \`--force' option.

  -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
  -m, --macrodir=DIR    directory storing macro files
  -l, --localdir=DIR    directory storing \`aclocal.m4' and \`acconfig.h'
  -f, --force           consider every files are obsolete

The following options are passed to \`automake':
     --cygnus          assume program is part of Cygnus-style tree
     --foreign         set strictness to foreign
     --gnits           set strictness to gnits
     --gnu             set strictness to gnu
     --include-deps    include generated dependencies in Makefile.in
  -i                   deprecated alias for --include-deps

The environment variables AUTOCONF, AUTOHEADER, AUTOMAKE, and ACLOCAL
are honored.

Report bugs to <bug-autoconf@gnu.org>."

version="\
autoreconf (GNU @PACKAGE@) @VERSION@
Written by David J. MacKenzie.

Copyright (C) 1994, 99, 2000 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.
: ${AC_MACRODIR=@datadir@}
debug=false
dir=`echo "$0" | sed -e 's/[^/]*$//'`
force=false
localdir=.
verbose=:

# Looking for autoconf.
# 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

# Looking for autoheader.
for autoheader in "$AUTOHEADER" \
                  "$dir/@autoheader-name@" \
                  "$dir/autoheader" \
                  "@bindir@/@autoheader-name@"; do
  test -f "$autoheader" && break
done
# Looking for automake.
: ${automake=${AUTOMAKE=automake}}
# Looking for aclocal.
: ${aclocal=${ACLOCAL=aclocal}}

# Parse command line.
while test $# -gt 0; do
  case "$1" in
    --version | --vers* | -V )
       echo "$version" ; exit 0 ;;
    --help | --h* | -h )
       echo "$usage"; exit 0 ;;

    --verbose | --verb* | -v )
       verbose=echo
       shift;;
    --debug | --d* | -d )
       debug=:; shift ;;

    --localdir=* | --l*=* )
       localdir=`echo "$1" | sed -e 's/^[^=]*=//'`
       shift ;;
    --localdir | --l* | -l )
       test $# = 1 && eval "$exit_missing_arg"
       shift
       localdir=$1
       shift ;;

    --macrodir=* | --m*=* )
       AC_MACRODIR=`echo "$1" | sed -e 's/^[^=]*=//'`
       shift ;;
    --macrodir | --m* | -m )
       test $# = 1 && eval "$exit_missing_arg"
       shift
       AC_MACRODIR=$1
       shift ;;

     --force | -f )
       force=:; shift ;;

     # Options of Automake.
     --cygnus | --foreign | --gnits | --gnu | --include-deps | -i )
       automake="$automake $1"; shift ;;

     -- )     # Stop option processing.
       shift; break ;;
     -* )
       exec >&2
       echo "$me: invalid option $1"
       echo "$help"
       exit 1 ;;
     * )
       break ;;
  esac
done

# Find the input file.
if test $# -ne 0; then
  exec >&2
  echo "$me: invalid number of arguments"
  echo "$help"
  exit 1
fi

# Dispatch autoreconf's option to the tools.
autoconf="$autoconf -l $localdir `$verbose --verbose`"
autoheader="$autoheader -l $localdir `$verbose --verbose`"
$force || automake="$automake --no-force"
automake="$automake `$verbose --verbose`"
aclocal="$aclocal `$verbose --verbose`"
export AC_MACRODIR

# Trap on 0 to stop playing with `rm'.
$debug ||
{
  trap 'status=$?; rm -rf $tmp && exit $status' 0
  trap 'exit $?' 1 2 13 15
}

# Create a (secure) tmp directory for tmp files.
: ${TMPDIR=/tmp}
{
  tmp=`(umask 077 && mktemp -d -q "$TMPDIR/arXXXXXX") 2>/dev/null` &&
  test -n "$tmp" && test -d "$tmp"
}  ||
{
  tmp=$TMPDIR/ar$$ && (umask 077 && mkdir $tmp)
} ||
{
   echo "$me: cannot create a temporary directory in $TMPDIR" >&2
   exit 1;
}

# alflags.sed -- Fetch the aclocal flags.
cat >$tmp/alflags.sed <<EOF
#n
/^ACLOCAL_[A-Z_]*FLAGS/{
  s/.*=//
  p
  q
}
EOF

# update.sh --
# Exit 0 iff the first argument is not the most recent of all or is missing.
# FIXME: Why do we need -l?  Dropping it would allow using fgrep.
cat >$tmp/update.sh <<\EOF
test -f "$1" || exit 0
ls -lt "$@" |
  sed 1q |
  # This is not exact: we should be quoting the `.' etc. in $1.
  grep "$1$" >/dev/null 2>&1 || exit 0
exit 1
EOF
update="@SHELL@ $tmp/update.sh"


# ----------------------- #
# Real work starts here.  #
# ----------------------- #

# Make a list of directories to process.
# The xargs grep filters out Cygnus configure.in files.
find . -name configure.in -print |
xargs grep -l AC_OUTPUT |
sed 's%/configure\.in$%%; s%^./%%' |
while read dir; do
  (
  cd $dir || continue

  case "$dir" in
  .) dots= ;;
  *) # A "../" for each directory in /$dir.
     dots=`echo /$dir | sed 's%/[^/]*%../%g'` ;;
  esac

  case "$localdir" in
  /*)  localdir_opt="--localdir=$localdir"
       aclocal_m4=$localdir/aclocal.m4 ;;
  *)   localdir_opt="--localdir=$dots$localdir"
       aclocal_m4=$dots$localdir/aclocal.m4 ;;
  esac


  # ----------------- #
  # Running aclocal.  #
  # ----------------- #

  # uses_aclocal -- is this package using aclocal?
  uses_aclocal=false
  aclocal_dir=`echo $aclocal_m4 | sed 's,/*[^/]*$,,;s,^$,.,'`
  if grep 'generated automatically by aclocal' $aclocal_m4 >/dev/null 2>&1 ||
     test -f "$aclocal_dir/acinclude.m4"; then
     uses_aclocal=:
  fi
  if $uses_aclocal &&
     { $force ||
       $update $aclocal_m4 $aclocal_dir/acinclude.m4; } then
     # If there are flags for aclocal in Makefile.am, use them.
     aclocal_flags=`sed -f $tmp/alflags.sed Makefile.am 2>/dev/null`
     if test x"$aclocal_dir" != x.; then
       aclocal_flags="$aclocal_flags -I $aclocal_dir"
     fi
     $verbose running $aclocal $aclocal_flags --output=$aclocal_m4 in $dir
     $aclocal $aclocal_flags --output=$aclocal_m4
  fi


  # ------------------ #
  # Running automake.  #
  # ------------------ #

  # Assumes that there is a Makefile.am in the topmost directory.
  uses_automake=false
  test -f "Makefile.am" &&
    uses_automake=:
  if $uses_automake &&
     { $force || $update Makefile.in Makefile.am; } then
    $verbose running $automake in $dir
    $automake
  fi


  # ------------------ #
  # Running autoconf.  #
  # ------------------ #

  test ! -f $aclocal_m4 && aclocal_m4=

  if $force ||
     $update configure configure.in $aclocal_m4; then
    $verbose running $autoconf $localdir_opt in $dir
    $autoconf $localdir_opt
  fi


  # -------------------- #
  # Running autoheader.  #
  # -------------------- #

  # templates -- arguments of AC_CONFIG_HEADERS.
  templates=`$autoconf $localdir_opt -t 'AC_CONFIG_HEADERS:$1'`
  if test -n "$templates"; then
    tcount=`set -- $templates; echo $#`
    template=`set -- $templates; echo $1 | sed '
        s/.*://
        t colon
        s/$/.in/
        : colon
        s/:.*//
      '`
    template_dir=`echo $template | sed 's,/*[^/]*$,,;s,^$,.,'`
    stamp_num=`test "$tcount" -gt 1 && echo "$tcount"`
    stamp=$template_dir/stamp-h$stamp_num.in
    acconfig_h=`echo $localdir_opt | sed -e 's/--localdir=//' \
                                         -e '/./ s%$%/%'`acconfig.h
    uses_autoheader=false;
    grep autoheader "$template" >/dev/null 2>&1 &&
       uses_autoheader=:
    if $uses_autoheader &&
       { $force ||
         $update $template configure.in $aclocal_m4 $acconfig_h ||
         $update $stamp    configure.in $aclocal_m4 $acconfig_h; } then
      $verbose running $autoheader $localdir_opt in $dir
      $autoheader $localdir_opt &&
      $verbose "touching $stamp" &&
      touch $stamp
    fi
  fi
  )
done

# Local Variables:
# mode: shell-script
# sh-indentation: 2
# End: