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#!/usr/bin/perl -w
=head1 NAME
dh_testversion - ensure that the correct version of debhelper is installed
=cut
use Debian::Debhelper::Dh_Lib;
use Debian::Debhelper::Dh_Version; # contains the version number of debhelper.
=head1 SYNOPSIS
dh_testversion [debhelper options] [operator] [version]
=head1 DESCRIPTION
Note: This program is deprecated. You should use build dependencies
instead.
dh_testversion compares the version of debhelper against the version you
specify, and if the condition is not met, exits with an error message.
You can use this in your debian/rules files if a new debhelper feature is
introduced, and your package requires that feature to build correctly. Use
debhelper's changelog to figure out the version you need.
Be sure not to overuse dh_testversion. If debhelper version 9.5
introduces a new dh_autofixbugs command, and your package uses it, then if
someone tries to build it with debhelper 1.0, the build will fail anyway when
dh_autofixbugs cannot be found, so there is no need for you to use
dh_testversion.
=head1 OPTIONS
=over 4
=item I<operator>
Optional comparison operator used in comparing the versions. If not
specified, ">=" is used. For descriptions of the comparison operators, see
dpkg --help.
=item I<version>
Version number to compare against the current version of debhelper. If not
specified, dh_testversion does nothing.
=back
=cut
init();
my($compare, $ver);
if ($#ARGV > 0) {
$compare=shift;
$ver=shift;
}
elsif ($#ARGV eq 0) {
$compare=">=";
$ver=shift;
}
if (defined $compare and defined $ver) {
system('dpkg','--compare-versions',$Debian::Debhelper::Dh_Version::version,$compare,$ver) == 0 ||
error("debhelper version $Debian::Debhelper::Dh_Version::version is installed, but a version $compare $ver is needed to build this package.");
}
=head1 SEE ALSO
L<debhelper(1)>
This program is a part of debhelper.
=head1 AUTHOR
Joey Hess <joeyh@debian.org>
=cut
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