# 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 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;