kc3-lang/automake/lib/Automake/Configure_ac.pm

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• Hash : 96497293
  Author :
  Date : 2012-06-01T19:15:29
  

  maint: deprecate 'configure.in' as autoconf input
  
  It has been years since that has been deprecated in the documentation,
  in favour of 'configure.ac':
  
      Previous versions of Autoconf promoted the name configure.in, which
      is somewhat ambiguous (the tool needed to process this file is not
      described by its extension), and introduces a slight confusion with
      config.h.in and so on (for which '.in' means "to be processed by
      configure"). Using configure.ac is now preferred.
  
  It's now time to start giving runtime warning about the use of
  'configure.in', so that support for it can be removed in future
  versions of autoconf/automake.
  
  See also, in the Autoconf repository, commit 'v2.69-4-g560f16b' of
  2012-05-23, "general: deprecate 'configure.in' as autoconf input".
  
  * lib/Automake/Configure_ac.pm: Issue a warning in the 'obsolete'
  category if 'configure.in' is detected.  Since this module is synced
  from Automake, this change is to be backported there (and will be
  soon).
  * t/help.sh: Adjust.
  * t/configure.sh: Adjust and enhance.
  
  Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>
  

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• lib/Automake/Configure_ac.pm

• # Copyright (C) 2003-2012 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 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, see <http://www.gnu.org/licenses/>.
  
  ###############################################################
  # The main copy of this file is in Automake's git repository. #
  # Updates should be sent to automake-patches@gnu.org.         #
  ###############################################################
  
  package Automake::Configure_ac;
  
  use 5.006;
  use strict;
  use Exporter;
  use Automake::Channels;
  use Automake::ChannelDefs;
  
  use vars qw (@ISA @EXPORT);
  
  @ISA = qw (Exporter);
  @EXPORT = qw (&find_configure_ac &require_configure_ac);
  
  =head1 NAME
  
  Automake::Configure_ac - Locate configure.ac or configure.in.
  
  =head1 SYNOPSIS
  
    use Automake::Configure_ac;
  
    # Try to locate configure.in or configure.ac in the current
    # directory.  It may be absent.  Complain if both files exist.
    my $file_name = find_configure_ac;
  
    # Likewise, but bomb out if the file does not exist.
    my $file_name = require_configure_ac;
  
    # Likewise, but in $dir.
    my $file_name = find_configure_ac ($dir);
    my $file_name = require_configure_ac ($dir);
  
  =over 4
  
  =back
  
  =head2 Functions
  
  =over 4
  
  =item C<$configure_ac = find_configure_ac ([$directory])>
  
  Find a F<configure.ac> or F<configure.in> file in C<$directory>,
  defaulting to the current directory.  Complain if both files are present.
  Return the name of the file found, or the former if neither is present.
  
  =cut
  
  sub find_configure_ac (;@)
  {
    my ($directory) = @_;
    $directory ||= '.';
    my $configure_ac =
      File::Spec->canonpath (File::Spec->catfile ($directory, 'configure.ac'));
    my $configure_in =
      File::Spec->canonpath (File::Spec->catfile ($directory, 'configure.in'));
  
    if (-f $configure_in)
      {
        msg ('obsolete', "autoconf input should be named 'configure.ac'," .
                         " not 'configure.in'");
        if (-f $configure_ac)
  	{
  	  msg ('unsupported',
  	       "'$configure_ac' and '$configure_in' both present.\n"
  	       . "proceeding with '$configure_ac'");
            return $configure_ac
  	}
        else
          {
            return $configure_in;
          }
      }
    return $configure_ac;
  }
  
  
  =item C<$configure_ac = require_configure_ac ([$directory])>
  
  Like C<find_configure_ac>, but fail if neither is present.
  
  =cut
  
  sub require_configure_ac (;$)
  {
    my $res = find_configure_ac (@_);
    fatal "'configure.ac' is required" unless -f $res;
    return $res
  }
  
  1;
  
  ### 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:
  

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