view release on metacpan or  search on metacpan

lib/Alien/Build/Manual/AlienAuthor.pod  view on Meta::CPAN

using the C<af> command (it does not come with L<Alien::Build>, you need
to install L<App::af>).  By default C<af> will use the C<alienfile> in
the current directory (just as C<make> uses the C<Makefile> in the
current directory; just like C<make> you can use the C<-f> option to
specify a different L<alienfile>).

You can test your L<alienfile> in dry run mode:

 % af install --dry-run
 Alien::Build::Plugin::Core::Legacy> adding legacy hash to config
 Alien::Build::Plugin::Core::Gather> mkdir -p /tmp/I2YXRyxb0r/_alien
 ---
 cflags: ''
 cflags_static: ''
 install_type: system
 legacy:
   finished_installing: 1
   install_type: system
   name: libfoo
   original_prefix: /tmp/7RtAusykNN
   version: 1.2.3
 libs: '-lfoo '
 libs_static: '-lfoo '
 prefix: /tmp/7RtAusykNN
 version: 1.2.3

You can use the C<--type> option to force a share install (download and
build from source):

 % af install --type=share --dry-run
 Alien::Build::Plugin::Core::Download> decoding html
 Alien::Build::Plugin::Core::Download> candidate *https://www.libfoo.org/download/libfoo-1.2.4.tar.gz
 Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.2.3.tar.gz
 Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.2.2.tar.gz
 Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.2.1.tar.gz
 Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.2.0.tar.gz
 Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.1.9.tar.gz
 Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.1.8.tar.gz
 Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.1.7.tar.gz
 Alien::Build::Plugin::Core::Download> candidate  ...
 Alien::Build::Plugin::Core::Download> setting version based on archive to 1.2.4
 Alien::Build::Plugin::Core::Download> downloaded libfoo-1.2.4.tar.gz
 Alien::Build::CommandSequence> + ./configure --prefix=/tmp/P22WEXj80r --with-pic --disable-shared
 ... snip ...
 Alien::Build::Plugin::Core::Gather> mkdir -p /tmp/WsoLAQ889w/_alien
 ---
 cflags: ''
 cflags_static: ''
 install_type: share
 legacy:
   finished_installing: 1
   install_type: share
   original_prefix: /tmp/P22WEXj80r
   version: 1.2.4
 libs: '-L/tmp/P22WEXj80r/lib -lfoo '
 libs_static: '-L/tmp/P22WEXj80r/lib -lfoo '
 prefix: /tmp/P22WEXj80r
 version: 1.2.4

You can also use the C<--before> and C<--after> options to take a peek
at what the build environment looks like at different stages as well,
which can sometimes be useful:

 % af install --dry-run --type=share --before build bash
 Alien::Build::Plugin::Core::Download> decoding html
 Alien::Build::Plugin::Core::Download> candidate *https://www.libfoo.org/download/libfoo-1.2.4.tar.gz
 Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.2.3.tar.gz
 Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.2.2.tar.gz
 Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.2.1.tar.gz
 Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.2.0.tar.gz
 Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.1.9.tar.gz
 Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.1.8.tar.gz
 Alien::Build::Plugin::Core::Download> candidate  https://www.libfoo.org/download/libfoo-1.1.7.tar.gz
 Alien::Build::Plugin::Core::Download> candidate  ...
 Alien::Build::Plugin::Core::Download> setting version based on archive to 1.2.4
 Alien::Build::Plugin::Core::Download> downloaded libfoo-1.2.4.tar.gz
 App::af::install>  [ before build ] + bash
 /tmp/fbVPu4LRTs/build_5AVn/libfoo-1.2.4$ ls
 CHANGES Makefile autoconf.ac lib
 /tmp/fbVPu4LRTs/build_5AVn/libfoo-1.2.4$

There are a lot of other useful things that you can do with the C<af>
command.  See L<af> for details.

=head2 Integrating with MakeMaker

Once you have a working L<alienfile> you can write your C<Makefile.PL>.

 use ExtUtils::MakeMaker;
 use Alien::Build::MM;
 
 my $abmm = Alien::Build::MM->new;
 
 WriteMakefile($abmm->mm_args(
   ABSTRACT           => 'Discover or download and install libfoo',
   DISTNAME           => 'Alien-Libfoo',
   NAME               => 'Alien::Libfoo',
   VERSION_FROM       => 'lib/Alien/Libfoo.pm',
   CONFIGURE_REQUIRES => {
     'Alien::Build::MM' => 0,
   },
   BUILD_REQUIRES => {
     'Alien::Build::MM' => 0,
   },
   PREREQ_PM => {
     'Alien::Base' => 0,
   },
   # If you are going to write the recommended
   # tests you will will want these:
   TEST_REQUIRES => {
     'Test::Alien' => 0,
     'Test2::V0'   => 0,
   },
 ));
 
 sub MY::postamble {
   $abmm->mm_postamble;
 }

The C<lib/Alien/Libfoo.pm> that goes along with it is very simple: