A Module::Build subclass for building Alien:: modules and their libraries
In your Build.PL:
use Alien::Base::ModuleBuild;
my $builder = Alien::Base::ModuleBuild->new(
module_name => 'Alien::MyLibrary',
configure_requires => {
'Alien::Base::ModuleBuild' => '0.005',
'Module::Build' => '0.28'
},
requires => {
'Alien::Base' => '0.005',
},
alien_name => 'mylibrary', # the pkg-config name if you want
# to use pkg-config to discover
# system version of the mylibrary
alien_repository => {
protocol => 'https',
host => 'myhost.org',
location => '/path/to/tarballs',
pattern => qr{^mylibrary-([0-9\.]+)\.tar\.gz$},
},
# this is the default:
alien_build_commands => [
"%c --prefix=%s", # %c is a platform independent version of ./configure
"make",
],
# this is the default for install:
alien_install_commands => [
"make install",
],
alien_isolate_dynamic => 1,
);NOTE: Please consider for new development of Aliens that you use Alien::Build and alienfile instead. Like this module they work with Alien::Base. Unlike this module they are more easily customized and handle a number of corner cases better. For a good place to start, please see Alien::Build::Manual::AlienAuthor. Although the Alien-Base / Alien-Build team will continue to maintain this module, (we will continue to fix bugs where appropriate), we aren't adding any new features to this module.
This is a subclass of Module::Build, that with Alien::Base allows for easy creation of Alien distributions. This module is used during the build step of your distribution. When properly configured it will
- use pkg-config to find and use the system version of the library
- download, build and install the library if the system does not provide it
[version 0.001]
my $version = $abmb->alien_check_installed_version;This function determines if the library is already installed as part of the operating system, and returns the version as a string. If it can't be detected then it should return empty list.
The default implementation relies on pkg-config, but you will probably
want to override this with your own implementation if the package you are
building does not use pkg-config.
[version 0.006]
my $version = $amb->alien_check_built_version;This function determines the version of the library after it has been
built from source. This function only gets called if the operating
system version can not be found and the package is successfully built.
The version is returned on success. If the version can't be detected
then it should return empty list. Note that failing to detect a version
is considered a failure and the corresponding ./Build action will
fail!
Any string is valid as a version as far as Alien::Base is concerned.
The most useful value would be a number or dotted decimal that most
software developers recognize and that software tools can differentiate.
In some cases packages will not have a clear version number, in which
case the string unknown would be a reasonable choice.
The default implementation relies on pkg-config, and other heuristics,
but you will probably want to override this with your own implementation
if the package you are building does not use pkg-config.
When this method is called, the current working directory will be the build root.
If you see an error message like this:
Library looks like it installed, but no version was determined
After the package is built from source code then you probably need to provide an implementation for this method.
[version 0.024]
my $dir = $amb->alien_extract_archive($filename);This function unpacks the given archive and returns the directory containing the unpacked files.
The default implementation relies on Archive::Extract that is able to handle most common formats. In order to handle other formats or archives requiring some special treatment you may want to override this method.
[version 0.024]
my %result = $amb->alien_do_system($cmd)Similar to
Module::Build's do_system,
also sets the path and several environment variables in accordance
to the object configuration (i.e. alien_bin_requires) and
performs the interpolation of the patterns described in
"COMMAND INTERPOLATION" in Alien::Base::ModuleBuild::API.
Returns a set of key value pairs including stdout, stderr,
success and command.
$amb->alien_do_commands($phase);
Executes the commands for the given phase.
my $string = $amb->alien_interpolate($string);Takes the input string and interpolates the results.
[version 1.16]
my $bool = $amb->alien_install_network;Returns true if downloading source from the internet is allowed. This
is true unless ALIEN_INSTALL_NETWORK is defined and false.
[version 1.16]
my $rule = $amb->alien_download_rule;This will return one of warn, digest, encrypt, digest_or_encrypt
or digest_and_encrypt. This is based on the ALIEN_DOWNLOAD_RULE
environment variable.
The documentation for Module::Build is broken up into sections:
-
General Usage (Module::Build)
This is the landing document for Alien::Base::ModuleBuild's parent class. It describes basic usage and background information. Its main purpose is to assist the user who wants to learn how to invoke and control
Module::Buildscripts at the command line.It also lists the extra documentation for its use. Users and authors of Alien:: modules should familiarize themselves with these documents. Module::Build::API is of particular importance to authors.
-
Alien-Specific Usage (Alien::Base::ModuleBuild)
This is the document you are currently reading.
-
Authoring Reference (Alien::Base::Authoring)
This document describes the structure and organization of
Alien::Basebased projects, beyond that contained inModule::Build::Authoring, and the relevant concepts needed by authors who are writingBuild.PLscripts for a distribution or controllingAlien::Base::ModuleBuildprocesses programmatically.Note that as it contains information both for the build and use phases of Alien::Base projects, it is located in the upper namespace.
-
API Reference (Alien::Base::ModuleBuild::API)
This is a reference to the
Alien::Base::ModuleBuildAPI beyond that contained inModule::Build::API. -
Using the resulting Alien (Alien::Build::Manual::AlienUser)
Once you have an Alien you or your users can review this manual for how to use it. Generally speaking you should have some useful usage information in your Alien's POD, but some authors choose to direct their users to this manual instead.
-
Using Alien::Build instead (Alien::Build::Manual)
As mentioned at the top, you are encouraged to use the Alien::Build and alienfile system instead. This manual is a starting point for the other Alien::Build documentation.
-
ALIEN_ARCH
Set to a true value to install to an arch-specific directory.
-
ALIEN_DOWNLOAD_RULE
This controls security options for fetching alienized packages over the internet. The legal values are:
-
warnWarn if the package is either unencrypted or lacks a digest. This is currently the default, but will change in the near future.
-
digestFetch will not happen unless there is a digest for the alienized package.
-
encryptFetch will not happen unless via an encrypted protocol like
https, or if the package is bundled with the Alien. -
digest_or_encryptFetch will only happen if the alienized package has a cryptographic signature digest, or if an encrypted protocol like
httpsis used, or if the package is bundled with the Alien. This will be the default in the near future. -
digest_and_encryptFetch will only happen if the alienized package has a cryptographic signature digest, and is fetched via a secure protocol (like
https). Bundled packages are also considered fetch via a secure protocol, but will still require a digest.
-
-
ALIEN_FORCE
Skips checking for an installed version and forces reinstalling the Alien target.
-
ALIEN_INSTALL_NETWORK
If true (the default if not defined), then network installs will be allowed. Set to
0or another false value to turn off network installs. -
ALIEN_INSTALL_TYPE
Set to
shareorsystemto override the install type. Set todefaultor unset to restore the default. -
ALIEN_VERBOSE
Enables verbose output from M::B::do_system.
-
ALIEN_${MODULENAME}_REPO_${PROTOCOL}_${KEY}
Overrides $KEY in the given module's repository configuration matching $PROTOCOL. For example,
ALIEN_OPENSSL_REPO_FTP_HOST=ftp.example.com.
Thanks also to
-
Christian Walde (Mithaldu)
For productive conversations about component interoperability.
-
kmx
For writing Alien::Tidyp from which I drew many of my initial ideas.
-
David Mertens (run4flat)
For productive conversations about implementation.
-
Mark Nunberg (mordy, mnunberg)
For graciously teaching me about rpath and dynamic loading,
Original author: Joel A Berger [email protected]
Current maintainer: Graham Ollis [email protected]
Contributors:
David Mertens (run4flat)
Mark Nunberg (mordy, mnunberg)
Christian Walde (Mithaldu)
Brian Wightman (MidLifeXis)
Graham Ollis (plicease)
Zaki Mughal (zmughal)
mohawk2
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)
Petr Písař (ppisar)
Alberto Simões (ambs)
This software is copyright (c) 2012-2022 by Joel A Berger.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
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