#! @PERL@ -w

# -*- perl -*-

# @configure_input@

eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'

    if 0;

# autoreconf - install the GNU Build System in a directory tree

# Copyright (C) 1994, 1999-2012 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 3 of the License, 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, see <http://www.gnu.org/licenses/>.

# Written by David J. MacKenzie.

# Extended and rewritten in Perl by Akim Demaille.

BEGIN

{

  my $pkgdatadir = $ENV{'autom4te_perllibdir'} || '@pkgdatadir@';

  unshift @INC, $pkgdatadir;

  # Override SHELL.  On DJGPP SHELL may not be set to a shell

  # that can handle redirection and quote arguments correctly,

  # e.g.: COMMAND.COM.  For DJGPP always use the shell that configure

  # has detected.

  $ENV{'SHELL'} = '@SHELL@' if ($^O eq 'dos');

}

use Autom4te::ChannelDefs;

use Autom4te::Channels;

use Autom4te::Configure_ac;

use Autom4te::FileUtils;

use Autom4te::General;

use Autom4te::XFile;

# Do not use Cwd::chdir, since it might hang.

use Cwd 'cwd';

use strict;

## ----------- ##

## Variables.  ##

## ----------- ##

# $HELP

# -----

$help = "Usage: $0 [OPTION]... [DIRECTORY]...

Run `autoconf' (and `autoheader', `aclocal', `automake', `autopoint'

(formerly `gettextize'), and `libtoolize' where appropriate)

repeatedly to remake the GNU Build System files in specified

DIRECTORIES and their subdirectories (defaulting to `.').

By default, it only remakes those files that are older than their

sources.  If you install new versions of the GNU Build System,

you can make `autoreconf' remake all of the files by giving it the

`--force' option.

Operation modes:

  -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

  -f, --force              consider all files obsolete

  -i, --install            copy missing auxiliary files

      --no-recursive       don't rebuild sub-packages

  -s, --symlink            with -i, install symbolic links instead of copies

  -m, --make               when applicable, re-run ./configure && make

  -W, --warnings=CATEGORY  report the warnings falling in CATEGORY [syntax]

" . Autom4te::ChannelDefs::usage . "

The environment variable \`WARNINGS\' is honored.  Some subtools might

support other warning types, using \`all' is encouraged.

Library directories:

  -B, --prepend-include=DIR  prepend directory DIR to search path

  -I, --include=DIR          append directory DIR to search path

The environment variables AUTOM4TE, AUTOCONF, AUTOHEADER, AUTOMAKE,

ACLOCAL, AUTOPOINT, LIBTOOLIZE, M4, and MAKE are honored.

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

GNU Autoconf home page: <http://www.gnu.org/software/autoconf/>.

General help using GNU software: <http://www.gnu.org/gethelp/>.

";

# $VERSION

# --------

$version = "autoreconf (@PACKAGE_NAME@) @VERSION@

Copyright (C) @RELEASE_YEAR@ Free Software Foundation, Inc.

License GPLv3+/Autoconf: GNU GPL version 3 or later

<http://gnu.org/licenses/gpl.html>, <http://gnu.org/licenses/exceptions.html>

This is free software: you are free to change and redistribute it.

There is NO WARRANTY, to the extent permitted by law.

Written by David J. MacKenzie and Akim Demaille.

";

# Lib files.

my $autoconf   = $ENV{'AUTOCONF'}   || '@bindir@/@autoconf-name@';

my $autoheader = $ENV{'AUTOHEADER'} || '@bindir@/@autoheader-name@';

my $autom4te   = $ENV{'AUTOM4TE'}   || '@bindir@/@autom4te-name@';

my $automake   = $ENV{'AUTOMAKE'}   || 'automake';

my $aclocal    = $ENV{'ACLOCAL'}    || 'aclocal';

my $libtoolize = $ENV{'LIBTOOLIZE'} || 'libtoolize';

my $autopoint  = $ENV{'AUTOPOINT'}  || 'autopoint';

my $make       = $ENV{'MAKE'}       || 'make';

# --install -- as --add-missing in other tools.

my $install = 0;

# symlink -- when --install, use symlinks instead.

my $symlink = 0;

# Does aclocal support --force?

my $aclocal_supports_force = 0;

# Does aclocal support -Wfoo?

my $aclocal_supports_warnings = 0;

# Does automake support --force-missing?

my $automake_supports_force_missing = 0;

# Does automake support -Wfoo?

my $automake_supports_warnings = 0;

my @prepend_include;

my @include;

# List of command line warning requests.

my @warning;

# Rerun `./configure && make'?

my $run_make = 0;

# Recurse into subpackages

my $recursive = 1;

## ---------- ##

## Routines.  ##

## ---------- ##

# parse_args ()

# -------------

# Process any command line arguments.

sub parse_args ()

{

  my $srcdir;

  getopt ("W|warnings=s"         => \@warning,

	  'I|include=s'          => \@include,

	  'B|prepend-include=s'	 => \@prepend_include,

	  'i|install'            => \$install,

	  's|symlink'            => \$symlink,

	  'm|make'               => \$run_make,

	  'recursive!'           => \$recursive);

  # Split the warnings as a list of elements instead of a list of

  # lists.

  @warning = map { split /,/ } @warning;

  parse_WARNINGS;

  parse_warnings '--warnings', @warning;

  # Even if the user specified a configure.ac, trim to get the

  # directory, and look for configure.ac again.  Because (i) the code

  # is simpler, and (ii) we are still able to diagnose simultaneous

  # presence of configure.ac and configure.in.

  @ARGV = map { /configure\.(ac|in)$/ ? dirname ($_) : $_ } @ARGV;

  push @ARGV, '.' unless @ARGV;

  if ($verbose && $debug)

    {

      for my $prog ($autoconf, $autoheader,

		    $automake, $aclocal,

		    $autopoint,

		    $libtoolize)

	{

	  xsystem ("$prog --version | sed 1q >&2");

	  print STDERR "\n";

	}

    }

  my $aclocal_help = `$aclocal --help 2>/dev/null`;

  my $automake_help = `$automake --help 2>/dev/null`;

  $aclocal_supports_force = $aclocal_help =~ /--force/;

  $aclocal_supports_warnings = $aclocal_help =~ /--warnings/;

  $automake_supports_force_missing = $automake_help =~ /--force-missing/;

  $automake_supports_warnings = $automake_help =~ /--warnings/;

  # Dispatch autoreconf's option to the tools.

  # --include;

  $aclocal    .= join (' -I ', '', map { shell_quote ($_) } @include);

  $autoconf   .= join (' --include=', '', map { shell_quote ($_) } @include);

  $autoconf   .= join (' --prepend-include=', '', map { shell_quote ($_) } @prepend_include);

  $autoheader .= join (' --include=', '', map { shell_quote ($_) } @include);

  $autoheader .= join (' --prepend-include=', '', map { shell_quote ($_) } @prepend_include);

  # --install and --symlink;

  if ($install)

    {

      $automake   .= ' --add-missing';

      $automake   .= ' --copy' unless $symlink;

      $libtoolize .= ' --copy' unless $symlink;

    }

  # --force;

  if ($force)

    {

      $aclocal    .= ' --force'

	if $aclocal_supports_force;

      $autoconf   .= ' --force';

      $autoheader .= ' --force';

      $automake   .= ' --force-missing'

	if $automake_supports_force_missing;

      $autopoint  .= ' --force';

      $libtoolize .= ' --force';

    }

  else

    {

      # The implementation of --no-force is bogus in all implementations

      # of Automake up to 1.8, so we avoid it in these cases.  (Automake

      # 1.8 is the first version where aclocal supports force, hence

      # the condition.)

      $automake .= ' --no-force'

	if $aclocal_supports_force;

    }

  # --verbose --verbose or --debug;

  if ($verbose > 1 || $debug)

    {

      $autoconf   .= ' --verbose';

      $autoheader .= ' --verbose';

      $automake   .= ' --verbose';

      $aclocal    .= ' --verbose';

    }

  if ($debug)

    {

      $autoconf   .= ' --debug';

      $autoheader .= ' --debug';

      $libtoolize .= ' --debug';

    }

  # --warnings;

  if (@warning)

    {

      my $warn = ' --warnings=' . join (',', @warning);

      $autoconf   .= $warn;

      $autoheader .= $warn;

      $automake   .= $warn

	if $automake_supports_warnings;

      $aclocal    .= $warn

        if $aclocal_supports_warnings;

    }

}

# &run_aclocal ($ACLOCAL, $FLAGS)

# -------------------------------

# Update aclocal.m4 as lazily as possible, as aclocal pre-1.8 always

# overwrites aclocal.m4, hence triggers autoconf, autoheader, automake

# etc. uselessly.  aclocal 1.8+ does not need this.

sub run_aclocal ($$)

{

  my ($aclocal, $flags) = @_;

  # aclocal 1.8+ does all this for free.  It can be recognized by its

  # --force support.

  if ($aclocal_supports_force)

    {

      xsystem ("$aclocal $flags");

    }

  else

    {

      xsystem ("$aclocal $flags --output=aclocal.m4t");

      # aclocal may produce no output.

      if (-f 'aclocal.m4t')

	{

	  update_file ('aclocal.m4t', 'aclocal.m4');

	  # Make sure that the local m4 files are older than

	  # aclocal.m4.

	  #

	  # Why is not always the case?  Because we already run

	  # aclocal at first (before tracing), which, for instance,

	  # can find Gettext's macros in .../share/aclocal, so we may

	  # have had the right aclocal.m4 already.  Then autopoint is

	  # run, and installs locally these M4 files.  Then

	  # autoreconf, via update_file, sees it is the _same_

	  # aclocal.m4, and doesn't change its timestamp.  But later,

	  # Automake's Makefile expresses that aclocal.m4 depends on

	  # these local files, which are newer, so it triggers aclocal

	  # again.

	  #

	  # To make sure aclocal.m4 is no older, we change the

	  # modification times of the local M4 files to be not newer

	  # than it.

	  #

	  # First, where are the local files?

	  my $aclocal_local_dir = '.';

	  if ($flags =~ /-I\s+(\S+)/)

	    {

	      $aclocal_local_dir = $1;

	    }

	  # All the local files newer than aclocal.m4 are to be

	  # made not newer than it.

	  my $aclocal_m4_mtime = mtime ('aclocal.m4');

	  for my $file (glob ("$aclocal_local_dir/*.m4"), 'acinclude.m4')

	    {

	      if ($aclocal_m4_mtime < mtime ($file))

		{

		  debug "aging $file to be not newer than aclocal.m4";

		  utime $aclocal_m4_mtime, $aclocal_m4_mtime, $file;

		}

	    }

	}

    }

}

# &autoreconf_current_directory

# -----------------------------

sub autoreconf_current_directory ()

{

  my $configure_ac = find_configure_ac;

  # ---------------------- #

  # Is it using Autoconf?  #

  # ---------------------- #

  my $uses_autoconf;

  my $uses_gettext;

  if (-f $configure_ac)

    {

      my $configure_ac_file = new Autom4te::XFile "< $configure_ac";

      while ($_ = $configure_ac_file->getline)

	{

	  s/#.*//;

	  s/dnl.*//;

	  $uses_autoconf = 1 if /AC_INIT/;

	  # See below for why we look for gettext here.

	  $uses_gettext = 1  if /^AM_GNU_GETTEXT_VERSION/;

	}

    }

  if (!$uses_autoconf)

    {

      verb "$configure_ac: not using Autoconf";

      return;

    }

  # ------------------- #

  # Running autopoint.  #

  # ------------------- #

  # Gettext is a bit of a problem: its macros are not necessarily

  # visible to aclocal, so if we start with a completely striped down

  # package (think of a fresh CVS checkout), running `aclocal' first

  # will fail: the Gettext macros are missing.

  #

  # Therefore, we can't use the traces to decide if we use Gettext or

  # not.  I guess that once Gettext move to 2.5x we will be able to,

  # but in the meanwhile forget it.

  #

  # We can only grep for AM_GNU_GETTEXT_VERSION in configure.ac.  You

  # might think this approach is naive, and indeed it is, as it

  # prevents one to embed AM_GNU_GETTEXT_VERSION in another *.m4, but

  # anyway we don't limit the generality, since... that's what

  # autopoint does.  Actually, it is even more restrictive, as it

  # greps for `^AM_GNU_GETTEXT_VERSION('.  We did this above, while

  # scanning configure.ac.

  if (!$uses_gettext)

    {

      verb "$configure_ac: not using Gettext";

    }

  elsif (!$install)

    {

      verb "$configure_ac: not running autopoint: --install not given";

    }

  else

    {

      xsystem_hint ("autopoint is needed because this package uses Gettext", "$autopoint");

    }

  # ----------------- #

  # Running aclocal.  #

  # ----------------- #

  # Run it first: it might discover new macros to add, e.g.,

  # AC_PROG_LIBTOOL, which we will trace later to see if Libtool is

  # used.

  #

  # Always run it.  Tracking its sources for up-to-dateness is too

  # complex and too error prone.  The best we can do is avoiding

  # nuking the time stamp.

  my $uses_aclocal = 1;

  # Nevertheless, if aclocal.m4 exists and is not made by aclocal,

  # don't run aclocal.

  if (-f 'aclocal.m4')

    {

      my $aclocal_m4 = new Autom4te::XFile 'aclocal.m4';

      $_ = $aclocal_m4->getline;

      $uses_aclocal = 0

	unless defined ($_) && /generated.*by aclocal/;

    }

  # If there are flags for aclocal in Makefile.am, use them.

  my $aclocal_flags = '';

  if ($uses_aclocal && -f 'Makefile.am')

    {

      my $makefile = new Autom4te::XFile 'Makefile.am';

      while ($_ = $makefile->getline)

	{

	  if (/^ACLOCAL_[A-Z_]*FLAGS\s*=\s*(.*)/)

	    {

	      $aclocal_flags = $1;

	      last;

	    }

	}

    }

  if (!$uses_aclocal)

    {

      verb "$configure_ac: not using aclocal";

    }

  else

    {

      # Some file systems have sub-second time stamps, and if so we may

      # run into trouble later, after we rerun autoconf and set the

      # time stamps of input files to be no greater than aclocal.m4,

      # because the time-stamp-setting operation (utime) has a

      # resolution of only 1 second.  Work around the problem by

      # ensuring that there is at least a one-second window before the

      # time stamp of aclocal.m4t in which no file time stamps can

      # fall.

      sleep 1;

      run_aclocal ($aclocal, $aclocal_flags);

    }

  # We might have to rerun aclocal if Libtool (or others) imports new

  # macros.

  my $rerun_aclocal = 0;

  # ------------------------------- #

  # See what tools will be needed.  #

  # ------------------------------- #

  # Perform a single trace reading to avoid --force forcing a rerun

  # between two --trace, that's useless.  If there is no AC_INIT, then

  # we are not interested: it looks like a Cygnus thingy.

  my $aux_dir;

  my $uses_gettext_via_traces;

  my $uses_libtool;

  my $uses_libltdl;

  my $uses_autoheader;

  my $uses_automake;

  my @subdir;

  verb "$configure_ac: tracing";

  my $traces = new Autom4te::XFile

    ("$autoconf"

     . join (' ',

	     map { ' --trace=' . $_ . ':\$n::\${::}%' }

	     # If you change this list, update the

	     # `Autoreconf-preselections' section of autom4te.in.

	     'AC_CONFIG_AUX_DIR',

	     'AC_CONFIG_HEADERS',

	     'AC_CONFIG_SUBDIRS',

	     'AC_INIT',

	     'AC_PROG_LIBTOOL',

	     'LT_INIT',

	     'LT_CONFIG_LTDL_DIR',

	     'AM_GNU_GETTEXT',

	     'AM_INIT_AUTOMAKE',

	    )

     . ' |');

  while ($_ = $traces->getline)

    {

      chomp;

      my ($macro, @args) = split (/::/);

      $aux_dir = $args[0]           if $macro eq "AC_CONFIG_AUX_DIR";

      $uses_autoconf = 1            if $macro eq "AC_INIT";

      $uses_gettext_via_traces = 1  if $macro eq "AM_GNU_GETTEXT";

      $uses_libtool = 1             if $macro eq "AC_PROG_LIBTOOL"

                                       || $macro eq "LT_INIT";

      $uses_libltdl = 1             if $macro eq "LT_CONFIG_LTDL_DIR";

      $uses_autoheader = 1          if $macro eq "AC_CONFIG_HEADERS";

      $uses_automake = 1            if $macro eq "AM_INIT_AUTOMAKE";

      push @subdir, split (' ', $args[0])

                                    if $macro eq "AC_CONFIG_SUBDIRS" && $recursive;

    }

  # The subdirs are *optional*, they may not exist.

  foreach (@subdir)

    {

      if (-d)

	{

	  verb "$configure_ac: adding subdirectory $_ to autoreconf";

	  autoreconf ($_);

	}

      else

	{

	  verb "$configure_ac: subdirectory $_ not present";

	}

    }

  # Gettext consistency checks...

  error "$configure_ac: AM_GNU_GETTEXT is used, but not AM_GNU_GETTEXT_VERSION"

    if $uses_gettext_via_traces && ! $uses_gettext;

  error "$configure_ac: AM_GNU_GETTEXT_VERSION is used, but not AM_GNU_GETTEXT"

    if $uses_gettext && ! $uses_gettext_via_traces;

  # ---------------------------- #

  # Setting up the source tree.  #

  # ---------------------------- #

  # libtoolize, automake --add-missing etc. will drop files in the

  # $AUX_DIR.  But these tools fail to install these files if the

  # directory itself does not exist, which valid: just imagine a CVS

  # repository with hand written code only (there is not even a need

  # for a Makefile.am!).

  if (defined $aux_dir && ! -d $aux_dir)

    {

      verb "$configure_ac: creating directory $aux_dir";

      mkdir $aux_dir, 0755

	or error "cannot create $aux_dir: $!";

    }

  # -------------------- #

  # Running libtoolize.  #

  # -------------------- #

  if (!$uses_libtool)

    {

      verb "$configure_ac: not using Libtool";

    }

  elsif ($install)

    {

      if ($uses_libltdl)

	{

	  $libtoolize .= " --ltdl";

	}

      xsystem_hint ("libtoolize is needed because this package uses Libtool", $libtoolize);

      $rerun_aclocal = 1;

    }

  else

    {

      verb "$configure_ac: not running libtoolize: --install not given";

    }

  # ------------------- #

  # Rerunning aclocal.  #

  # ------------------- #

  # If we re-installed Libtool or Gettext, the macros might have changed.

  # Automake also needs an up-to-date aclocal.m4.

  if ($rerun_aclocal)

    {

      if (!$uses_aclocal)

	{

	  verb "$configure_ac: not using aclocal";

	}

      else

	{

	  run_aclocal ($aclocal, $aclocal_flags);

	}

    }

  # ------------------ #

  # Running autoconf.  #

  # ------------------ #

  # Don't try to be smarter than `autoconf', which does its own up to

  # date checks.

  #

  # We prefer running autoconf before autoheader, because (i) the

  # latter runs the former, and (ii) autoconf is stricter than

  # autoheader.  So all in all, autoconf should give better error

  # messages.

  xsystem ($autoconf);

  # -------------------- #

  # Running autoheader.  #

  # -------------------- #

  # We now consider that if AC_CONFIG_HEADERS is used, then autoheader

  # is used too.

  #

  # Just as for autoconf, up to date ness is performed by the tool

  # itself.

  #

  # Run it before automake, since the latter checks the presence of

  # config.h.in when it sees an AC_CONFIG_HEADERS.

  if (!$uses_autoheader)

    {

      verb "$configure_ac: not using Autoheader";

    }

  else

    {

      xsystem ($autoheader);

    }

  # ------------------ #

  # Running automake.  #

  # ------------------ #

  if (!$uses_automake)

    {

      verb "$configure_ac: not using Automake";

    }

  else

    {

      # We should always run automake, and let it decide whether it shall

      # update the file or not.  In fact, the effect of `$force' is already

      # included in `$automake' via `--no-force'.

      xsystem ($automake);

    }

  # -------------- #

  # Running make.  #

  # -------------- #

  if ($run_make)

    {

      if (!-f "config.status")

	{

	  verb "no config.status: cannot re-make";

	}

      else

	{

	  xsystem ("./config.status --recheck");

	  xsystem ("./config.status");

	  if (!-f "Makefile")

	    {

	      verb "no Makefile: cannot re-make";

	    }

	  else

	    {

	      xsystem ("$make");

	    }

	}

    }

}

# &autoreconf ($DIRECTORY)

# ------------------------

# Reconf the $DIRECTORY.

sub autoreconf ($)

{

  my ($directory) = @_;

  my $cwd = cwd;

  # The format for this message is not free: taken from Emacs, itself

  # using GNU Make's format.

  verb "Entering directory `$directory'";

  chdir $directory

    or error "cannot chdir to $directory: $!";

  autoreconf_current_directory;

  # The format is not free: taken from Emacs, itself using GNU Make's

  # format.

  verb "Leaving directory `$directory'";

  chdir $cwd

    or error "cannot chdir to $cwd: $!";

}

## ------ ##

## Main.  ##

## ------ ##

# When debugging, it is convenient that all the related temporary

# files be at the same place.

mktmpdir ('ar');

$ENV{'TMPDIR'} = $tmp;

parse_args;

# Autoreconf all the given configure.ac.  Unless `--no-recursive' is passed,

# AC_CONFIG_SUBDIRS will be traversed in &autoreconf_current_directory.

$ENV{'AUTOM4TE'} = $autom4te;

for my $directory (@ARGV)

  {

    require_configure_ac ($directory);

    autoreconf ($directory);

  }

### Setup "GNU" style for perl-mode and cperl-mode.

## Local Variables:

## perl-indent-level: 2

## perl-continued-statement-offset: 2

## perl-continued-brace-offset: 0

## perl-brace-offset: 0

## perl-brace-imaginary-offset: 0

## perl-label-offset: -2

## cperl-indent-level: 2

## cperl-brace-offset: 0

## cperl-continued-brace-offset: 0

## cperl-label-offset: -2

## cperl-extra-newline-before-brace: t

## cperl-merge-trailing-else: nil

## cperl-continued-statement-offset: 2

## End: