/ 
Alien-Build-0.66
River stage four • 286 direct dependents • 1572 total dependents
/ Alien::Build::Plugin::Probe::CommandLine

NAME

Alien::Build::Plugin::Probe::CommandLine - Probe for tools or commands already available

VERSION

version 0.66

SYNOPSIS

use alienfile;
plugin 'Probe::CommandLine' => (
  command => 'gzip',
  args    => [ '--version' ],
  match   => qr/gzip/,
  version => qr/gzip ([0-9\.]+)/,
);

DESCRIPTION

This plugin probes for the existence of the given command line program.

PROPERTIES

command

The name of the command.

args

The arguments to pass to the command.

secondary

If you are using another probe plugin (such as Alien::Build::Plugin::Probe::CBuilder or Alien::Build::Plugin::PkgConfig::Negotiate) to detect the existence of a library, but also need a program to exist, then you should set secondary to a true value. For example when you need both:

use alienfile;
# requires both liblzma library and xz program
plugin 'PkgConfig' => 'liblzma';
plugin 'Probe::CommandLine => (
  command   => 'xz',
  secondary => 1,
);

When you don't:

use alienfile;
plugin 'Probe::CommandLine' => (
  command   => 'gzip',
  secondary => 0, # default
);

match

Regular expression for which the program output should match.

version

Regular expression to parse out the version from the program output. The regular expression should store the version number in $1.

SEE ALSO

Alien::Build, alienfile, Alien::Build::MM, Alien

AUTHOR

Author: Graham Ollis <plicease@cpan.org>

Contributors:

Diab Jerius (DJERIUS)

Roy Storey

Ilya Pavlov

COPYRIGHT AND LICENSE

This software is copyright (c) 2017 by Graham Ollis.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.