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

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• Hash : 74673d1c
  Author :
  Date : 2020-09-11T18:03:19
  

  Consistently use ‘our’ instead of ‘use vars’.
  
  At file scope of a file containing at most one ‘package’ declaration,
  ‘use vars’ is exactly equivalent to ‘our’, and the latter is preferred
  starting with Perl 5.6.0, which happens to be the oldest version we
  support.
  
  (This change has nothing to do with the previous two, but I want to make the
  same change in Autoconf and that means doing it here for all the files synced
  from Automake.)
  
  (I don’t know why, but this change exposed a latent bug in FileUtils.pm where
  the last pod block in the file didn’t have a ‘=cut’ delimiter, so the code
  after it was considered documentation, causing ‘require FileUtils’ to fail.)
  
  * lib/Automake/ChannelDefs.pm
  * lib/Automake/Channels.pm
  * lib/Automake/Condition.pm
  * lib/Automake/Configure_ac.pm
  * lib/Automake/DisjConditions.pm
  * lib/Automake/FileUtils.pm
  * lib/Automake/General.pm
  * lib/Automake/Getopt.pm
  * lib/Automake/Options.pm
  * lib/Automake/Rule.pm
  * lib/Automake/RuleDef.pm
  * lib/Automake/VarDef.pm
  * lib/Automake/Variable.pm
  * lib/Automake/Wrap.pm
  * lib/Automake/XFile.pm:
    Replace all uses of ‘use vars’ with ‘our’.
  
  * lib/Automake/FileUtils.pm:
    Add missing ‘=cut’ to a pod block near the end of the file.
  

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• lib/Automake/Configure_ac.pm

• # Copyright (C) 2003-2020 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 <https://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 warnings FATAL => 'all';
  
  use Exporter;
  
  use Automake::ChannelDefs;
  use Automake::Channels;
  
  our @ISA = qw (Exporter);
  our @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;
  

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