# $Id: ignore_action.pm,v 1.5 2009/02/09 22:07:39 pfeiffer Exp $
=head1 NAME
ignore_action -- A build check method that ignores changes in the command.
=head1 USAGE
build_check ignore_action
=head1 DESCRIPTION
The C<ignore_action> method is exactly like the C<exact_match> method except
that it will not cause a rebuild if the command string changes. This method
is intended to be used (along with the variable $(changed_inputs)) for
commands that update an output file rather than remake it from scratch. For
example,
libxyz.a : *.o : build_check ignore_action
ar ru $(output) $(changed_inputs)
is one way that you can update an archive. (There are a number of reasons why
updating an archive can lead to incorrect builds, however. See the makepp
cookbook for details.)
=cut
use strict;
package Mpp::BuildCheck::ignore_action;
use Mpp::BuildCheck::exact_match;
our @ISA = 'Mpp::BuildCheck::exact_match';
our $ignore_action = bless [1]; # Make the singleton object with options.
1;