Manpages - alienfile.3pm
Table of Contents
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NAME
alienfile - Specification for defining an external dependency for CPAN
VERSION
version 2.44
SYNOPSIS
Do-it-yourself approach:
use alienfile; probe [ pkg-config –exists libarchive ]; share { start_url http://libarchive.org/downloads/libarchive-3.2.2.tar.gz; # the first one which succeeds will be used download [ wget %{.meta.start_url} ]; download [ curl -o %{.meta.start_url} ]; extract [ tar xf %{.install.download} ]; build [ # Note: will not work on Windows, better to use Build::Autoconf plugin # if you need windows support ./configure –prefix=%{.install.prefix} –disable-shared, %{make}, %{make} install, ]; } gather [ [ pkg-config, –modversion, libarchive, \%{.runtime.version} ], [ pkg-config, –cflags, libarchive, \%{.runtime.cflags} ], [ pkg-config, –libs, libarchive, \%{.runtime.libs} ], ];
With plugins (better):
use alienfile; plugin PkgConfig => libarchive; share { start_url http://libarchive.org/downloads/; plugin Download => ( filter => qr/^libarchive-.*\.tar\.gz$/, version => qr/([0-9\.]+)/, ); plugin Extract => tar.gz; plugin Build::Autoconf; plugin Gather::IsolateDynamic; build [ %{configure}, %{make}, %{make} install, ]; };
DESCRIPTION
An alienfile is a recipe used by Alien::Build to, probe for system libraries or download from the internet, and build source for those libraries. This document acts as reference for the alienfile system, but if you are starting out writing your own Alien you should read Alien::Build::Manual::AlienAuthor, which will teach you how to write your own complete Alien using alienfile + Alien::Build + ExtUtils::MakeMaker. Special attention should be taken to the section a note about dynamic vs. static libraries.
DIRECTIVES
requires
any requirement (either share or system):
requires $module; requires $module => $version;
configure time requirement:
configure { requires $module; requires $module => $version; };
system requirement:
sys { requires $module; requires $module => $version; };
share requirement:
share { requires $module; requires $module => $version; };
specifies a requirement. Alien::Build takes advantage of dynamic requirements, so only modules that are needed for the specific type of install need to be loaded. Here are the different types of requirements:
- configure
- Configure requirements should already be installed before the alienfile is loaded.
- any
- Any requirements are those that are needed either for the probe stage, or in either the system or share installs.
- share
- Share requirements are those modules needed when downloading and building from source.
- system
- System requirements are those modules needed when the system provides the library or tool.
plugin
plugin $name => (%args); plugin $name => $arg;
Load the given plugin. If you prefix the plugin name with an =
sign,
then it will be assumed to be a fully qualified path name. Otherwise the
plugin will be assumed to live in the Alien::Build::Plugin
namespace.
If there is an appropriate negotiate plugin, that one will be loaded.
Examples:
best Alien::Build::Plugin::Fetch # plugin based on the URL, and system configuration plugin Fetch => http://ftp.gnu.org/gnu/gcc; # loads the plugin with the badly named class! plugin =Badly::Named::Plugin::Not::In::Alien::Build::Namespace; # explicitly loads Alien::Build::Plugin::Prefer::SortVersions plugin Prefer::SortVersions => ( filter => qr/^gcc-.*\.tar\.gz$/, version => qr/([0-9\.]+)/, );
probe
probe \&code; probe \@commandlist;
Instructions for the probe stage. May be either a code reference, or a command list.
configure
configure { … };
Configure block. The only directive allowed in a configure block is requires.
sys
sys { … };
System block. Allowed directives are: requires and gather.
share
share { … };
System block. Allowed directives are: download, fetch, decode, prefer, extract, build, gather.
start_url
share { start_url $url; };
Set the start URL for download. This should be the URL to an index page, or the actual tarball of the source.
download
share { download \&code; download \@commandlist; };
Instructions for the download stage. May be either a code reference, or a command list.
fetch
share { fetch \&code; fetch \@commandlist; };
Instructions for the fetch stage. May be either a code reference, or a command list.
decode
share { decode \&code; decode \@commandlist; };
Instructions for the decode stage. May be either a code reference, or a command list.
prefer
share { prefer \&code; prefer \@commandlist; };
Instructions for the prefer stage. May be either a code reference, or a command list.
extract
share { extract \&code; extract \@commandlist; };
Instructions for the extract stage. May be either a code reference, or a command list.
patch
share { patch \&code; patch \@commandlist; };
Instructions for the patch stage. May be either a code reference, or a command list.
patch_ffi
share { patch_ffi \&code; patch_ffi \@commandlist; };
[DEPRECATED]
Instructions for the patch_ffi stage. May be either a code reference, or a command list.
build
share { build \&code; build \@commandlist; };
Instructions for the build stage. May be either a code reference, or a command list.
build_ffi
share { build \&code; build \@commandlist; };
[DEPRECATED]
Instructions for the build FFI stage. Builds shared libraries instead of static. This is optional, and is only necessary if a fresh and separate build needs to be done for FFI.
gather
gather \&code; gather \@commandlist; share { gather \&code; gather \@commandlist; }; sys { gather \&code; gather \@commandlist; };
Instructions for the gather stage. May be either a code reference, or a command list. In the root block of the alienfile it will trigger in both share and system build. In the share or sys block it will only trigger in the corresponding build.
gather_ffi
share { gather_ffi \&code; gather_ffi \@commandlist; }
[DEPRECATED]
Gather specific to build_ffi
. Not usually necessary.
ffi
share { ffi { patch \&code; patch \@commandlist; build \&code; build \@commandlist; gather \&code; gather \@commandlist; } }
Specify patch, build or gather stages related to FFI.
meta_prop
my $hash = meta_prop;
Get the meta_prop hash reference.
meta
my $meta = meta;
Returns the meta object for your alienfile.
log
log($message);
Prints the given log to stdout.
test
share { test \&code; test \@commandlist; }; sys { test \&code; test \@commandlist; };
Run the tests
before
before $stage => \&code;
Execute the given code before the given stage. Stage should be one of
probe
, download
, fetch
, decode
, prefer
, extract
, patch
,
build
, test
, and gather
.
The before directive is only legal in the same blocks as the stage would normally be legal in. For example, you can’t do this:
use alienfile; sys { before build => sub { … }; };
Because a build
wouldn’t be legal inside a sys
block.
after
after $stage => \&code;
Execute the given code after the given stage. Stage should be one of
probe
, download
, fetch
, decode
, prefer
, extract
, patch
,
build
, test
, and gather
.
The after directive is only legal in the same blocks as the stage would normally be legal in. For example, you can’t do this:
use alienfile; sys { after build => sub { … }; };
Because a build
wouldn’t be legal inside a sys
block.
SEE ALSO
- Alien
- Alien::Build
- Alien::Build::MM
- Alien::Base
AUTHOR
Author: Graham Ollis <plicease@cpan.org>
Contributors:
Diab Jerius (DJERIUS)
Roy Storey (KIWIROY)
Ilya Pavlov
David Mertens (run4flat)
Mark Nunberg (mordy, mnunberg)
Christian Walde (Mithaldu)
Brian Wightman (MidLifeXis)
Zaki Mughal (zmughal)
mohawk (mohawk2, ETJ)
Vikas N Kumar (vikasnkumar)
Flavio Poletti (polettix)
Salvador Fandiño (salva)
Gianni Ceccarelli (dakkar)
Pavel Shaydo (zwon, trinitum)
Kang-min Liu (劉康民, gugod)
Nicholas Shipp (nshp)
Juan Julián Merelo Guervós (JJ)
Joel Berger (JBERGER)
Petr Písař (ppisar)
Lance Wicks (LANCEW)
Ahmad Fatoum (a3f, ATHREEF)
José Joaquín Atria (JJATRIA)
Duke Leto (LETO)
Shoichi Kaji (SKAJI)
Shawn Laffan (SLAFFAN)
Paul Evans (leonerd, PEVANS)
Håkon Hægland (hakonhagland, HAKONH)
nick nauwelaerts (INPHOBIA)
COPYRIGHT AND LICENSE
This software is copyright (c) 2011-2020 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.