Configure_ac.pm

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Author : Alexandre Duret-Lutz
Date : 2003-09-07 09:55:36
Hash : 9e88c16c
Message : * aclocal.in (configure_ac): Do not call require_configure_ac before parsing the options. * automake.in (configure_ac): Likewise. * lib/Automake/Variable.pm (configure_ac): Do not require configure.ac, find it. * lib/Automake/Configure_ac.pm (require_configure_ac): find_configure_ac never return an undefined value, so test the file's existence instead. * tests/Makefile.am (TESTS): Add help.test. * tests/help.test: New file.

lib/Automake/Configure_ac.pm

# Copyright (C) 2003  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.

package Automake::Configure_ac;

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 $filename = find_configure_ac;

  # Likewise, but bomb out if the file does not exist.
  my $filename = require_configure_ac;

  # Likewise, but in $dir.
  my $filename = find_configure_ac ($dir);
  my $filename = require_configure_ac ($dir);

=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_ac)
    {
      if (-f $configure_in)
	{
	  msg ('unsupported',
	       "`$configure_ac' and `$configure_in' both present.\n"
	       . "proceeding with `$configure_ac'.");
	}
      return $configure_ac
    }
  elsif (-f 'configure.in')
    {
      return $configure_in;
    }
  return $configure_ac;
}


sub require_configure_ac (;$)
{
  my $res = find_configure_ac (@_);
  fatal "`configure.ac' or `configure.in' 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:

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

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