1Alien::Build::Manual::AUlsieernACuotnhtorri(b3u)ted PerlAlDioecnu:m:eBnutialtdi:o:nManual::AlienAuthor(3)
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3
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NAME

6       Alien::Build::Manual::AlienAuthor - Alien author documentation
7

VERSION

9       version 2.17
10

SYNOPSIS

12        perldoc Alien::Build::Manual::AlienAuthor
13

DESCRIPTION

15       Note: Please read the entire document before you get started in writing
16       your own alienfile.  The section on dynamic vs. static libraries will
17       likely save you a lot of grief if you read it now!
18
19       This document is intended to teach Alien authors how to build their own
20       Alien distribution using Alien::Build and Alien::Base.  Such an Alien
21       distribution consists of three essential parts:
22
23       An alienfile
24           This is a recipe for how to 1) detect an already installed version
25           of the library or tool you are alienizing 2) download and build the
26           library or tool that you are alienizing and 3) gather the
27           configuration settings necessary for the use of that library or
28           tool.
29
30       An installer "Makefile.PL" or "Build.PL" or a "dist.ini" if you are
31       using Dist::Zilla
32           This is a thin layer between your alienfile recipe, and the Perl
33           installer (either ExtUtils::MakeMaker or Module::Build.
34
35       A Perl class (.pm file) that inherits from Alien::Base
36           For most Aliens this does not need to be customized at all, since
37           Alien::Base usually does what you need.
38
39       For example if you were alienizing a library called libfoo, you might
40       have these files:
41
42        Alien-Libfoo-1.00/Makefile.PL
43        Alien-Libfoo-1.00/alienfile
44        Alien-Libfoo-1.00/lib/Alien/Libfoo.pm
45
46       This document will focus mainly on instructing you how to construct an
47       alienfile, but we will also briefly cover making a simple "Makefile.PL"
48       or "dist.ini" to go along with it.  We will also touch on when you
49       might want to extend your subclass to add non-standard functionality.
50
51   Using commands
52       Most software libraries and tools will come with instructions for how
53       to install them in the form of commands that you are intended to type
54       into a shell manually.  The easiest way to automate those instructions
55       is to just put the commands in your alienfile.  For example, lets
56       suppose that libfoo is built using autoconf and provides a "pkg-config"
57       ".pc" file.
58
59       We will also later discuss plugins.  For common build systems like
60       autoconf or CMake, it is usually better to use the appropriate plugin
61       because they will handle corner cases better than a simple set of
62       commands.  We're going to take a look at commands first because it's
63       easier to understand the different phases with commands.
64
65       (Aside, autoconf is a series of tools and macros used to configure
66       (usually) a C or C++ library or tool by generating any number of
67       Makefiles.  It is the C equivalent to ExtUtils::MakeMaker, if you will.
68       Basically, if your library or tool instructions start with
69       './configure' it is most likely an autoconf based library or tool).
70
71       (Aside2, "pkg-config" is a standard-ish way to provide the compiler and
72       linker flags needed for compiling and linking against the library.  If
73       your tool installs a ".pc" file, usually in "$PREFIX/lib/pkgconfig"
74       then, your tool uses "pkg-config").
75
76       Here is the alienfile that you might have:
77
78        use alienfile;
79
80        probe [ 'pkg-config --exists libfoo' ];
81
82        share {
83
84          start_url 'http://www.libfoo.org/src/libfoo-1.00.tar.gz';
85
86          download [ 'wget %{.meta.start_url}' ];
87
88          extract [ 'tar zxf %{.install.download}' ];
89
90          build [
91            [ './configure --prefix=%{.install.prefix} --disable-shared' ],
92            [ '%{make}' ],
93            [ '%{make} install' ],
94          ];
95
96        };
97
98        gather [
99          [ 'pkg-config --modversion libfoo', \'%{.runtime.version}' ],
100          [ 'pkg-config --cflags     libfoo', \'%{.runtime.cflags}'  ],
101          [ 'pkg-config --libs       libfoo', \'%{.runtime.libs}'    ],
102        ];
103
104       There is a lot going on here, so lets decode it a little bit.  An
105       alienfile is just some Perl with some alien specific sugar.  The first
106       line
107
108        use alienfile;
109
110       imports the sugar into the alienfile.  It also is a flag for the reader
111       to see that this is an alienfile and not some other kind of Perl
112       script.
113
114       The second line is the probe directive:
115
116        probe [ 'pkg-config --exists libfoo' ];
117
118       is used to see if the library is already installed on the target
119       system.  If "pkg-config" is in the path, and if libfoo is installed,
120       this should exit with a success (0) and tell Alien::Build to use the
121       system library.  If either "pkg-config" in the PATH, or if libfoo is
122       not installed, then it will exist with non-success (!= 0) and tells
123       Alien::Build to download and build from source.
124
125       You can provide as many probe directives as you want.  This is useful
126       if there are different ways to probe for the system.  Alien::Build will
127       stop on the first successfully found system library found.  Say our
128       library libfoo comes with a ".pc" file for use with "pkg-config" and
129       also provides a "foo-config" program to find the same values.  You
130       could then specify this in your alienfile
131
132        probe [ 'pkg-config --exists libfoo' ];
133        probe [ 'foo-config --version' ];
134
135       Other directives can be specified multiple times if there are different
136       methods that can be tried for the various steps.
137
138       Sometimes it is easier to probe for a library from Perl rather than
139       with a command.  For that you can use a code reference.  For example,
140       another way to call "pkg-config" would be from Perl:
141
142        probe sub {
143          my($build) = @_;  # $build is the Alien::Build instance.
144          system 'pkg-config --exists libfoo';
145          $? == 0 ? 'system' : 'share';
146        };
147
148       The Perl code should return 'system' if the library is installed, and
149       'share' if not.  (Other directives should return a true value on
150       success, and a false value).  You can also throw an exception with
151       "die" to indicate a failure.
152
153       The next part of the alienfile is the "share" block, which is used to
154       group the directives which are used to download and install the library
155       or tool in the event that it is not already installed.
156
157        share {
158          start_url 'http://www.libfoo.org/src/libfoo-1.00.tar.gz';
159          download [ 'wget %{.meta.start_url}' ];
160          extract [ 'tar zxf %{.install.download}' ];
161          build [
162            [ './configure --prefix=%{.install.prefix} --disable-shared' ],
163            [ '%{make}' ],
164            [ '%{make} install' ],
165          ];
166        };
167
168       The start_url specifies where to find the package that you are
169       alienizing.  It should be either a tarball (or zip file, or what have
170       you) or an HTML index.  The download directive as you might imagine
171       specifies how to download  the library or tool.  The extract directive
172       specifies how to extract the archive once it is downloaded.  In the
173       extract step, you can use the variable "%{.install.download}" as a
174       placeholder for the archive that was downloaded in the download step.
175       This is also accessible if you use a code reference from the
176       Alien::Build instance:
177
178        share {
179          ...
180          requires 'Archive::Extract';
181          extract sub {
182            my($build) = @_;
183            my $tarball = $build->install_prop->{download};
184            my $ae = Archive::Extract->new( archive => $tarball );
185            $ae->extract;
186            1;
187          }
188          ...
189        };
190
191       The build directive specifies how to build the library or tool once it
192       has been downloaded and extracted.  Note the special variable
193       "%{.install.prefix}" is the location where the library should be
194       installed.  "%{make}" is a helper which will be replaced by the
195       appropriate "make", which may be called something different on some
196       platforms (on Windows for example, it frequently may be called "nmake"
197       or "dmake").
198
199       The final part of the alienfile has a gather directive which specifies
200       how to get the details on how to compile and link against the library.
201       For this, once again we use the "pkg-config" command:
202
203        gather [
204          [ 'pkg-config --modversion libfoo', \'%{.runtime.version}' ],
205          [ 'pkg-config --cflags     libfoo', \'%{.runtime.cflags}'  ],
206          [ 'pkg-config --libs       libfoo', \'%{.runtime.libs}'    ],
207        ];
208
209       The scalar reference as the final item in the command list tells
210       Alien::Build that the output from the command should be stored in the
211       given variable.  The runtime variables are the ones that will be
212       available to "Alien::Libfoo" once it is installed.  (Install
213       properties, which are the ones that we have seen up till now are thrown
214       away once the Alien distribution is installed.
215
216       You can also provide a "sys" block for directives that should be used
217       when a system install is detected.  Normally you only need to do this
218       if the gather step is different between share and system installs.  For
219       example, the above is equivalent to:
220
221        build {
222          ...
223          gather [
224            [ 'pkg-config --modversion libfoo', \'%{.runtime.version}' ],
225            [ 'pkg-config --cflags     libfoo', \'%{.runtime.cflags}'  ],
226            [ 'pkg-config --libs       libfoo', \'%{.runtime.libs}'    ],
227          ];
228        };
229
230        sys {
231          gather [
232            [ 'pkg-config --modversion libfoo', \'%{.runtime.version}' ],
233            [ 'pkg-config --cflags     libfoo', \'%{.runtime.cflags}'  ],
234            [ 'pkg-config --libs       libfoo', \'%{.runtime.libs}'    ],
235          ];
236        };
237
238       (Aside3, the reason it is called "sys" and not "system" is so that it
239       does not conflict with the built in "system" function)!
240
241   Using plugins
242       The first example is a good way of showing the full manual path that
243       you can choose, but there is a lot of repetition, if you are doing many
244       Aliens that use autoconf and "pkg-config" (which are quite common.
245       alienfile allows you to use plugins.  See Alien::Build::Plugin for a
246       list of some of the plugin categories.
247
248       For now, I will just show you how to write the alienfile for libfoo
249       above using Alien::Build::Plugin::Build::Autoconf,
250       Alien::Build::Plugin::PkgConfig::Negotiate,
251       Alien::Build::Plugin::Download::Negotiate, and
252       Alien::Build::Plugin::Extract::Negotiate
253
254        use alienfile;
255
256        plugin 'PkgConfig' => (
257          pkg_name => 'libfoo',
258        );
259
260        share {
261          start_url 'http://www.libfoo.org/src';
262          plugin 'Download' => (
263            filter => qr/^libfoo-[0-9\.]+\.tar\.gz$/,
264            version => qr/^libfoo-([0-9\.]+)\.tar\.gz$/,
265          );
266          plugin 'Extract' => 'tar.gz';
267          plugin 'Build::Autoconf';
268          build [
269            '%{configure} --disable-shared',
270            '%{make}',
271            '%{make} install',
272          ];
273        };
274
275       The first plugin that we use is the "pkg-config" negotiation plugin.  A
276       negotiation plugin is one which doesn't do the actual work but selects
277       the best one from a set of plugins depending on your platform and
278       environment.  (In the case of
279       Alien::Build::Plugin::PkgConfig::Negotiate, it may choose to use
280       command line tools, a pure Perl implementation (PkgConfig), or
281       libpkgconf, depending on what is available).  When using negotiation
282       plugins you may omit the "::Negotiate" suffix.  So as you can see using
283       the plugin here is an advantage because it is more reliable that just
284       specifying a command which may not be installed!
285
286       Next we use the download negotiation plugin.  This is also better than
287       the version above, because again, "wget" my not be installed on the
288       target system.  Also you can specify a URL which will be scanned for
289       links, and use the most recent version.
290
291       We use the Extract negotiation plugin to use either command line tools,
292       or Perl libraries to extract from the archive once it is downloaded.
293
294       Finally we use the Autoconf plugin
295       (Alien::Build::Plugin::Build::Autoconf).  This is a lot more
296       sophisticated and reliable than in the previous example, for a number
297       of reasons.  This version will even work on Windows assuming the
298       library or tool you are alienizing supports that platform!
299
300       Strictly speaking the build directive is not necessary, because the
301       autoconf plugin provides a default which is reasonable.  The only
302       reason that you would want to include it is if you need to provide
303       additional flags to the configure step.
304
305        share {
306          ...
307          build [
308            '%{configure} --enable-bar --enable-baz --disable-shared',
309            '%{make}',
310            '%{make} install',
311          ];
312        };
313
314   A note about dynamic vs. static libraries
315       If you are using your Alien to build an XS module, it is important that
316       you use static libraries if possible.  If you have a package that
317       refuses to build a static library, then you can use Alien::Role::Dino.
318
319       Actually let me back up a minute.  For a "share" install it is best to
320       use static libraries to build your XS extension.  This is because if
321       your Alien is ever upgraded to a new version it can break your existing
322       XS modules.  For a "system" install shared libraries are usually best
323       because you can often get security patches without having to re-build
324       anything in perl land.
325
326       If you looked closely at the "Using commands" and "Using plugins"
327       sections above, you may notice that we went out of our way where
328       possible to tell Autotools to build only static libraries using the
329       "--disable-shared" command.  The Autoconf plugin also does this by
330       default.
331
332       Sometimes though you will have a package that builds both, or maybe you
333       want both static and dynamic libraries to work with XS and FFI.  For
334       that case, there is the Alien::Build::Plugin::Gather::IsolateDynamic
335       plugin.
336
337        use alienfile;
338        ...
339        plugin 'Gather::IsolateDynamic';
340
341       What it does, is that it moves the dynamic libraries (usually .so on
342       Unix and .DLL on Windows) to a place where they can be found by FFI,
343       and where they won't be used by the compiler for building XS.  It
344       usually doesn't do any harm to include this plugin, so if you are just
345       starting out you might want to add it anyway.  Arguably it should have
346       been the default behavior from the beginning.
347
348       If you have already published an Alien that does not isolate its
349       dynamic libraries, then you might get some fails from old upgraded
350       aliens because the share directory isn't cleaned up by default (this is
351       perhaps a design bug in the way that share directories work, but it is
352       a long standing characteristic).  One work around for this is to use
353       the "clean_install" property on Alien::Build::MM, which will clean out
354       the share directory on upgrade, and possibly save you a lot of grief.
355
356   Verifying and debugging your alienfile
357       You could feed your alienfile directly into Alien::Build, or
358       Alien::Build::MM, but it is sometimes useful to test your alienfile
359       using the "af" command (it does not come with Alien::Build, you need to
360       install App::af).  By default "af" will use the "alienfile" in the
361       current directory (just as "make" uses the "Makefile" in the current
362       directory; just like "make" you can use the "-f" option to specify a
363       different alienfile).
364
365       You can test your alienfile in dry run mode:
366
367        % af install --dry-run
368        Alien::Build::Plugin::Core::Legacy> adding legacy hash to config
369        Alien::Build::Plugin::Core::Gather> mkdir -p /tmp/I2YXRyxb0r/_alien
370        ---
371        cflags: ''
372        cflags_static: ''
373        install_type: system
374        legacy:
375          finished_installing: 1
376          install_type: system
377          name: libfoo
378          original_prefix: /tmp/7RtAusykNN
379          version: 1.2.3
380        libs: '-lfoo '
381        libs_static: '-lfoo '
382        prefix: /tmp/7RtAusykNN
383        version: 1.2.3
384
385       You can use the "--type" option to force a share install (download and
386       build from source):
387
388        % af install --type=share --dry-run
389        Alien::Build::Plugin::Core::Download> decoding html
390        Alien::Build::Plugin::Core::Download> candidate *https://www.libfoo.org/download/libfoo-1.2.4.tar.gz
391        Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.2.3.tar.gz
392        Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.2.2.tar.gz
393        Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.2.1.tar.gz
394        Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.2.0.tar.gz
395        Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.1.9.tar.gz
396        Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.1.8.tar.gz
397        Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.1.7.tar.gz
398        Alien::Build::Plugin::Core::Download> candidate  ...
399        Alien::Build::Plugin::Core::Download> setting version based on archive to 1.2.4
400        Alien::Build::Plugin::Core::Download> downloaded libfoo-1.2.4.tar.gz
401        Alien::Build::CommandSequence> + ./configure --prefix=/tmp/P22WEXj80r --with-pic --disable-shared
402        ... snip ...
403        Alien::Build::Plugin::Core::Gather> mkdir -p /tmp/WsoLAQ889w/_alien
404        ---
405        cflags: ''
406        cflags_static: ''
407        install_type: share
408        legacy:
409          finished_installing: 1
410          install_type: share
411          original_prefix: /tmp/P22WEXj80r
412          version: 1.2.4
413        libs: '-L/tmp/P22WEXj80r/lib -lfoo '
414        libs_static: '-L/tmp/P22WEXj80r/lib -lfoo '
415        prefix: /tmp/P22WEXj80r
416        version: 1.2.4
417
418       You can also use the "--before" and "--after" options to take a peek at
419       what the build environment looks like at different stages as well,
420       which can sometimes be useful:
421
422        % af install --dry-run --type=share --before build bash
423        Alien::Build::Plugin::Core::Download> decoding html
424        Alien::Build::Plugin::Core::Download> candidate *https://www.libfoo.org/download/libfoo-1.2.4.tar.gz
425        Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.2.3.tar.gz
426        Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.2.2.tar.gz
427        Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.2.1.tar.gz
428        Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.2.0.tar.gz
429        Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.1.9.tar.gz
430        Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.1.8.tar.gz
431        Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.1.7.tar.gz
432        Alien::Build::Plugin::Core::Download> candidate  ...
433        Alien::Build::Plugin::Core::Download> setting version based on archive to 1.2.4
434        Alien::Build::Plugin::Core::Download> downloaded libfoo-1.2.4.tar.gz
435        App::af::install>  [ before build ] + bash
436        /tmp/fbVPu4LRTs/build_5AVn/libfoo-1.2.4$ ls
437        CHANGES Makefile autoconf.ac lib
438        /tmp/fbVPu4LRTs/build_5AVn/libfoo-1.2.4$
439
440       There are a lot of other useful things that you can do with the "af"
441       command.  See af for details.
442
443   Integrating with MakeMaker
444       Once you have a working alienfile you can write your "Makefile.PL".
445
446        use ExtUtils::MakeMaker;
447        use Alien::Build::MM;
448
449        my $abmm = Alien::Build::MM->new;
450
451        WriteMakefile($abmm->mm_args(
452          ABSTRACT           => 'Discover or download and install libfoo',
453          DISTNAME           => 'Alien-Libfoo',
454          NAME               => 'Alien::Libfoo',
455          VERSION_FROM       => 'lib/Alien/Libfoo.pm',
456          CONFIGURE_REQUIRES => {
457            'Alien::Build::MM' => 0,
458          },
459          BUILD_REQUIRES => {
460            'Alien::Build::MM' => 0,
461          },
462          PREREQ_PM => {
463            'Alien::Base' => 0,
464          },
465          # If you are going to write the recommended
466          # tests you will will want these:
467          TEST_REQUIRES => {
468            'Test::Alien' => 0,
469            'Test2::V0'   => 0,
470          },
471        ));
472
473        sub MY::postamble {
474          $abmm->mm_postamble;
475        }
476
477       The "lib/Alien/Libfoo.pm" that goes along with it is very simple:
478
479        package Alien::Libfoo;
480
481        use strict;
482        use warnings;
483        use base qw( Alien::Base );
484
485        1;
486
487       You are done and can install it normally:
488
489        % perl Makefile.PL
490        % make
491        % make test
492        % make install
493
494   Integrating with Module::Build
495       Please don't!  Okay if you have to there is Alien::Build::MB.
496
497   Non standard configuration
498       Alien::Base support most of the things that your Alien will need, like
499       compiler flags (cflags), linker flags (libs) and binary directory
500       (bin_dir).  Your library or tool may have other configuration items
501       which are not supported by default.  You can store the values in the
502       alienfile into the runtime properties:
503
504        gather [
505          # standard:
506          [ 'foo-config --version libfoo', \'%{.runtime.version}' ],
507          [ 'foo-config --cflags  libfoo', \'%{.runtime.cflags}'  ],
508          [ 'foo-config --libs    libfoo', \'%{.runtime.libs}'    ],
509          # non-standard
510          [ 'foo-config --bar-baz libfoo', \'%{.runtime.bar_baz}' ],
511        ];
512
513       then you can expose them in your Alien::Base subclass:
514
515        package Alien::Libfoo;
516
517        use strict;
518        use warnings;
519        use base qw( Alien::Base );
520
521        sub bar_baz {
522          my($self) = @_;
523          $self->runtime_prop->{bar_baz},
524        };
525
526        1;
527
528   Testing
529       (optional, but highly recommended)
530
531       You should write a test using Test::Alien to make sure that your alien
532       will work with any XS modules that are going to use it:
533
534        use Test2::V0;
535        use Test::Alien;
536        use Alien::Libfoo;
537
538        alien_ok 'Alien::Libfoo';
539
540        xs_ok { local $/; <DATA> }, with_subtest {
541          is Foo::something(), 1, 'Foo::something() returns 1';
542        };
543
544        done_testing;
545
546        __DATA__
547        #include "EXTERN.h"
548        #include "perl.h"
549        #include "XSUB.h"
550        #include <foo.h>
551
552        MODULE = Foo PACKAGE = Foo
553
554        int something()
555
556       You can also use Test::Alien to test tools instead of libraries:
557
558        use Test2::V0;
559        use Test::Alien;
560        use Alien::Libfoo;
561
562        alien_ok 'Alien::Libfoo';
563        run_ok(['foo', '--version'])
564          ->exit_is(0);
565
566        done_testing;
567
568       You can also write tests specifically for FFI::Platypus, if your alien
569       is going to be used to write FFI bindings.  (the test below is the FFI
570       equivalent to the XS example above).
571
572        use Test2::V0;
573        use Test::Alien;
574        use Alien::Libfoo;
575
576        alien_ok 'Alien::Libfoo';
577        ffi_ok { symbols => [ 'something' ] }, with_subtest {
578          # $ffi is an instance of FFI::Platypus with the lib
579          # set appropriately.
580          my($ffi) = @_;
581          my $something = $ffi->function( something => [] => 'int' );
582          is $something->call(), 1, 'Foo::something() returns 1';
583        };
584
585       If you do use "ffi_ok" you want to make sure that your alien reliably
586       produces dynamic libraries.  If it isn't consistent (if for example
587       some platforms tend not to provide or build dynamic libraries), you can
588       check that "dynamic_libs" doesn't return an empty list.
589
590        ...
591        alien_ok 'Alien::Libfoo';
592        SKIP: {
593          skip "This test requires a dynamic library"
594            unless Alien::Libfoo->dynamic_libs;
595          ffi_ok { symbols [ 'something' ] }, with_subtest {
596            ...
597          };
598        }
599
600       More details on testing Alien modules can be found in the Test::Alien
601       documentation.
602
603       You can also run the tests that come with the package that you are
604       alienizing, by using a "test" block in your alienfile.  Keep in mind
605       that some packages use testing tools or have other prerequisites that
606       will not be available on your users machines when they attempt to
607       install your alien.  So you do not want to blindly add a test block
608       without checking what the prereqs are.  For Autoconf style packages you
609       typically test a package using the "make check" command:
610
611        use alienfile;
612
613        plugin 'PkgConfig' => 'libfoo';
614
615        share {
616          ... # standard build steps.
617          test [ '%{make} check' ];
618        };
619
620   Dist::Zilla
621       (optional, mildly recommended)
622
623       You can also use the Alien::Build Dist::Zilla plugin
624       Dist::Zilla::Plugin::AlienBuild:
625
626        name    = Alien-Libfoo
627        author  = E. Xavier Ample <example@cpan.org>
628        license = Perl_5
629        copyright_holder = E. Xavier Ample <example@cpan.org>
630        copyright_year   = 2017
631        version = 0.01
632
633        [@Basic]
634        [AlienBuild]
635
636       The plugin takes care of a lot of details like making sure that the
637       correct minimum versions of Alien::Build and Alien::Base are used.  See
638       the plugin documentation for additional details.
639
640   Using your Alien
641       Once you have installed you can use your Alien.  See
642       Alien::Build::Manual::AlienUser for guidance on that.
643

AUTHOR

645       Author: Graham Ollis <plicease@cpan.org>
646
647       Contributors:
648
649       Diab Jerius (DJERIUS)
650
651       Roy Storey (KIWIROY)
652
653       Ilya Pavlov
654
655       David Mertens (run4flat)
656
657       Mark Nunberg (mordy, mnunberg)
658
659       Christian Walde (Mithaldu)
660
661       Brian Wightman (MidLifeXis)
662
663       Zaki Mughal (zmughal)
664
665       mohawk (mohawk2, ETJ)
666
667       Vikas N Kumar (vikasnkumar)
668
669       Flavio Poletti (polettix)
670
671       Salvador Fandiño (salva)
672
673       Gianni Ceccarelli (dakkar)
674
675       Pavel Shaydo (zwon, trinitum)
676
677       Kang-min Liu (劉康民, gugod)
678
679       Nicholas Shipp (nshp)
680
681       Juan Julián Merelo Guervós (JJ)
682
683       Joel Berger (JBERGER)
684
685       Petr Pisar (ppisar)
686
687       Lance Wicks (LANCEW)
688
689       Ahmad Fatoum (a3f, ATHREEF)
690
691       José Joaquín Atria (JJATRIA)
692
693       Duke Leto (LETO)
694
695       Shoichi Kaji (SKAJI)
696
697       Shawn Laffan (SLAFFAN)
698
699       Paul Evans (leonerd, PEVANS)
700
702       This software is copyright (c) 2011-2020 by Graham Ollis.
703
704       This is free software; you can redistribute it and/or modify it under
705       the same terms as the Perl 5 programming language system itself.
706
707
708
709perl v5.30.2                      2020-03-2A0lien::Build::Manual::AlienAuthor(3)
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