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.\" ========================================================================
.\"
.IX Title "Alien::Util 3"
.TH Alien::Util 3 "2024-10-29" "perl v5.32.1" "User Contributed Perl Documentation"
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.SH "NAME"
Alien::Util \- Alien Utilities used at build and runtime
.SH "VERSION"
.IX Header "VERSION"
version 2.84
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& use Alien::Util qw( version_cmp );
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.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module contains some functions used by both the Alien::Build build-time and <Alien::Base>
run-time for Alien.
.SS "version_cmp"
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\&  $cmp = version_cmp($x, $y)
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.PP
Comparison method used by \*(L"atleast_version\*(R" in Alien::Base, \*(L"exact_version\*(R" in Alien::Base and
\&\*(L"max_version\*(R" in Alien::Base. May be useful to implement custom comparisons, or for
subclasses to overload to get different version comparison semantics than the
default rules, for packages that have some other rules than the \fIpkg-config\fR
behaviour.
.PP
Should return a number less than, equal to, or greater than zero; similar in
behaviour to the \f(CW\*(C`<=>\*(C'\fR and \f(CW\*(C`cmp\*(C'\fR operators.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Alien::Base, alienfile, Alien::Build
.SH "AUTHOR"
.IX Header "AUTHOR"
Author: Graham Ollis <plicease@cpan.org>
.PP
Contributors:
.PP
Diab Jerius (\s-1DJERIUS\s0)
.PP
Roy Storey (\s-1KIWIROY\s0)
.PP
Ilya Pavlov
.PP
David Mertens (run4flat)
.PP
Mark Nunberg (mordy, mnunberg)
.PP
Christian Walde (Mithaldu)
.PP
Brian Wightman (MidLifeXis)
.PP
Zaki Mughal (zmughal)
.PP
mohawk (mohawk2, \s-1ETJ\s0)
.PP
Vikas N Kumar (vikasnkumar)
.PP
Flavio Poletti (polettix)
.PP
Salvador Fandiño (salva)
.PP
Gianni Ceccarelli (dakkar)
.PP
Pavel Shaydo (zwon, trinitum)
.PP
Kang-min Liu (劉康民, gugod)
.PP
Nicholas Shipp (nshp)
.PP
Juan Julián Merelo Guervós (\s-1JJ\s0)
.PP
Joel Berger (\s-1JBERGER\s0)
.PP
Petr Písař (ppisar)
.PP
Lance Wicks (\s-1LANCEW\s0)
.PP
Ahmad Fatoum (a3f, \s-1ATHREEF\s0)
.PP
José Joaquín Atria (\s-1JJATRIA\s0)
.PP
Duke Leto (\s-1LETO\s0)
.PP
Shoichi Kaji (\s-1SKAJI\s0)
.PP
Shawn Laffan (\s-1SLAFFAN\s0)
.PP
Paul Evans (leonerd, \s-1PEVANS\s0)
.PP
Håkon Hægland (hakonhagland, \s-1HAKONH\s0)
.PP
nick nauwelaerts (\s-1INPHOBIA\s0)
.PP
Florian Weimer
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
This software is copyright (c) 2011\-2022 by Graham Ollis.
.PP
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.