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package Alien::Base::ModuleBuild;
use strict;
use warnings;
our $VERSION = '0.000_015';
$VERSION = eval $VERSION;
use parent 'Module::Build';
use Capture::Tiny qw/capture tee/;
use File::chdir;
use File::Spec;
use Carp;
use Archive::Extract;
use Sort::Versions;
use List::MoreUtils qw/uniq/;
use Alien::Base::PkgConfig;
use Alien::Base::ModuleBuild::Cabinet;
use Alien::Base::ModuleBuild::Repository;
use Alien::Base::ModuleBuild::Repository::HTTP;
use Alien::Base::ModuleBuild::Repository::FTP;
use Alien::Base::ModuleBuild::Repository::Local;
# setup protocol specific classes
# Alien:: author can override these defaults using alien_repository_class property
my %default_repository_class = (
default => 'Alien::Base::ModuleBuild::Repository',
http => 'Alien::Base::ModuleBuild::Repository::HTTP',
ftp => 'Alien::Base::ModuleBuild::Repository::FTP',
local => 'Alien::Base::ModuleBuild::Repository::Local',
);
our $Verbose;
$Verbose = $ENV{ALIEN_VERBOSE} if defined $ENV{ALIEN_VERBOSE};
our $Force;
$Force = $ENV{ALIEN_FORCE} if defined $ENV{ALIEN_FORCE};
################
# Parameters #
################
## Extra parameters in A::B::MB objects (all (toplevel) should start with 'alien_')
# alien_name: name of library
__PACKAGE__->add_property('alien_name');
# alien_temp_dir: folder name for download/build
__PACKAGE__->add_property( alien_temp_dir => '_alien' );
# alien_share_dir: folder name for the "install" of the library
# this is added (unshifted) to the @{share_dir->{dist}}
# N.B. is reset during constructor to be full folder name
__PACKAGE__->add_property('alien_share_dir'); # default => '_install'
# alien_selection_method: name of method for selecting file: (todo: newest, manual)
# default is specified later, when this is undef (see alien_check_installed_version)
__PACKAGE__->add_property( alien_selection_method => 'newest' );
# alien_build_commands: arrayref of commands for building
__PACKAGE__->add_property(
alien_build_commands =>
default => [ '%pconfigure --prefix=%s', 'make', 'make install' ],
);
# alien_version_check: command to execute to check if install/version
__PACKAGE__->add_property( alien_version_check => 'pkg-config --modversion %n' );
# pkgconfig-esque info, author provides these by hand for now, will parse .pc file eventually
__PACKAGE__->add_property( 'alien_provides_cflags' );
__PACKAGE__->add_property( 'alien_provides_libs' );
# alien_repository: hash (or arrayref of hashes) of information about source repo on ftp
# |-- protocol: ftp or http
# |-- protocol_class: holder for class type (defaults to 'Net::FTP' or 'HTTP::Tiny')
# |-- host: ftp server for source
# |-- location: ftp folder containing source, http addr to page with links
# |-- pattern: qr regex matching acceptable files, if has capture group those are version numbers
# |-- platform: src or platform, matching os_type M::B method
# |
# |-- (non-api) connection: holder for Net::FTP-like object (needs cwd, ls, and get methods)
__PACKAGE__->add_property( 'alien_repository' => {} );
__PACKAGE__->add_property( 'alien_repository_default' => {} );
__PACKAGE__->add_property( 'alien_repository_class' => {} );
################
# ConfigData #
################
# build_share_dir: full path to the shared directory specified in alien_share_dir
# pkgconfig: hashref of A::B::PkgConfig objects created from .pc file found in build_share_dir
# install_type: either system or share
# version: version number installed or available
# Cflags: holder for cflags if manually specified
# Libs: same but libs
# name: holder for name as needed by pkg-config
############################
# Initialization Methods #
############################
sub new {
my $class = shift;
my %args = @_;
my $install_dir = ($args{alien_share_dir} ||= '_install');
# merge default and user-defined repository classes
$args{alien_repository_class}{$_} ||= $default_repository_class{$_}
for keys %default_repository_class;
# initialize M::B property share_dir
if (! defined $args{share_dir}) {
# no share_dir property
$args{share_dir} = $install_dir;
} elsif (! ref $args{share_dir}) {
# share_dir is a scalar, meaning dist
$args{share_dir} = { dist => [$install_dir, $args{share_dir}] };
} elsif (! ref $args{share_dir}{dist}) {
# share_dir is like {dist => scalar}, so upconvert to arrayref
$args{share_dir} = { dist => [$install_dir, $args{share_dir}{dist}] };
} else {
# share_dir is like {dist => [...]}, so unshift
unshift @{$args{share_dir}{dist}}, $install_dir;
}
my $self = $class->SUPER::new(%args);
# store full path to alien_share_dir, used in interpolate
$self->config_data(
build_share_dir => File::Spec->catdir( $self->base_dir(), $install_dir )
);
# force newest for all automated testing
#TODO (this probably should be checked for "input needed" rather than blindly assigned)
if ($ENV{AUTOMATED_TESTING}) {
$self->alien_selection_method('newest');
}
return $self;
}
sub alien_create_repositories {
my $self = shift;
## get repository specs
my $repo_default = $self->alien_repository_default;
my $repo_specs = $self->alien_repository;
# upconvert to arrayref if a single hashref is passed
if (ref $repo_specs eq 'HASH') {
$repo_specs = [ $repo_specs ];
}
my @repos;
foreach my $repo ( @$repo_specs ) {
#merge defaults into spec
foreach my $key ( keys %$repo_default ) {
next if defined $repo->{$key};
$repo->{$key} = $repo_default->{$key};
}
$repo->{platform} = 'src' unless defined $repo->{platform};
my $protocol = $repo->{protocol} || 'default';
push @repos, $self->alien_repository_class($protocol)->new( $repo );
}
# check validation, including c compiler for src type
@repos =
grep { $self->alien_validate_repo($_) }
@repos;
unless (@repos) {
croak "No valid repositories available";
}
return @repos;
}
sub alien_init_temp_dir {
my $self = shift;
my $dir_name = $self->alien_temp_dir;
my $install_dir = $self->config_data('build_share_dir');
# make sure we are in base_dir
local $CWD = $self->base_dir;
unless ( -d $dir_name ) {
mkdir $dir_name or croak "Could not create temporary directory $dir_name";
}
$self->add_to_cleanup( $dir_name );
# if install_dir does not exist, create AND mark for add_to_cleanup
unless ( -d $install_dir ) {
mkdir $install_dir or croak "Could not create temporary directory $install_dir";
$self->add_to_cleanup( $install_dir );
}
}
####################
# ACTION methods #
####################
sub ACTION_code {
my $self = shift;
$self->depends_on('alien') unless $self->notes('ACTION_alien_completed');
$self->SUPER::ACTION_code;
}
sub ACTION_alien {
my $self = shift;
$self->config_data( name => $self->alien_name );
my $version;
$version = $self->alien_check_installed_version
unless $Force;
if ($version) {
$self->config_data( install_type => 'system' );
$self->config_data( version => $version );
return;
}
$self->alien_init_temp_dir;
my @repos = $self->alien_create_repositories;
my $cabinet = Alien::Base::ModuleBuild::Cabinet->new;
foreach my $repo (@repos) {
$cabinet->add_files( $repo->probe() );
}
$cabinet->sort_files;
{
local $CWD = $self->alien_temp_dir;
my $file = $cabinet->files->[0];
$version = $file->version;
print "Downloading File: " . $file->filename . " ... ";
my $filename = $file->get;
print "Done\n";
print "Extracting Archive ... ";
my $ae = Archive::Extract->new( archive => $filename );
$ae->extract;
$CWD = $ae->extract_path;
print "Done\n";
print "Building library ... ";
unless ($self->alien_build) {
print "Failed\n";
croak "Build not completed";
}
print "Done\n";
}
$self->config_data( install_type => 'share' );
my $pc = $self->alien_load_pkgconfig;
my $pc_version = (
$pc->{$self->alien_name} || $pc->{_manual}
)->keyword('Version');
if (! $version and ! $pc_version) {
carp "Library looks like it installed, but no version was determined";
$self->config_data( version => 0 );
return
}
if ( $version and $pc_version and versioncmp($version, $pc_version)) {
carp "Version information extracted from the file name and pkgconfig data disagree";
}
$self->config_data( version => $pc_version || $version );
# prevent building multiple times (on M::B::dispatch)
$self->notes( 'ACTION_alien_completed' => 1 );
return;
}
#######################
# Pre-build Methods #
#######################
sub alien_check_installed_version {
my $self = shift;
my $command = $self->alien_version_check;
my %result = $self->do_system($command);
my $version = $result{stdout} || 0;
return $version;
}
sub alien_validate_repo {
my $self = shift;
my ($repo) = @_;
my $platform = $repo->{platform};
# return true if platform is undefined
return 1 unless defined $platform;
# if $valid is src, check for c compiler
if ($platform eq 'src') {
return $self->have_c_compiler;
}
# $valid is a string (OS) to match against
return $self->os_type eq $platform;
}
###################
# Build Methods #
###################
sub alien_build {
my $self = shift;
my $commands = $self->alien_build_commands;
foreach my $command (@$commands) {
my $success = $self->do_system( $command );
unless ($success) {
carp "External command ($command) failed! Error: $?\n";
return 0;
}
}
return 1;
}
# wrapper for M::B::do_system which interpolates alien_ vars first
# futher it either captures or tees depending on the value of $Verbose
sub do_system {
my $self = shift;
# prevent build process from cwd-ing from underneath us
local $CWD;
my $initial_cwd = $CWD;
my @args = map { $self->alien_interpolate($_) } @_;
my ($out, $err, $success) =
$Verbose
? tee { $self->SUPER::do_system(@args) }
: capture { $self->SUPER::do_system(@args) }
;
my %return = (
stdout => $out,
stderr => $err,
success => $success,
command => join(' ', @args),
);
# restore wd
$CWD = $initial_cwd;
return wantarray ? %return : $return{success};
}
sub alien_interpolate {
my $self = shift;
my ($string) = @_;
my $prefix = $self->alien_exec_prefix;
my $share = $self->config_data('build_share_dir');
my $name = $self->alien_name;
# substitute:
# install location share_dir (placeholder: %s)
$string =~ s/(?<!\%)\%s/$share/g;
# local exec prefix (ph: %p)
$string =~ s/(?<!\%)\%p/$prefix/g;
# library name (ph: %n)
$string =~ s/(?<!\%)\%n/$name/g;
# current interpreter ($^X) (ph: %x)
$string =~ s/(?<!\%)\%x/$^X/g;
#remove escapes (%%)
$string =~ s/\%(?=\%)//g;
return $string;
}
sub alien_exec_prefix {
my $self = shift;
if ( $self->is_windowsish ) {
return '';
} else {
return './';
}
}
########################
# Post-Build Methods #
########################
sub alien_load_pkgconfig {
my $self = shift;
my $dir = $self->config_data('build_share_dir');
my $pc_files = $self->rscan_dir( $dir, qr/\.pc$/ );
my %pc_objects = map {
my $pc = Alien::Base::PkgConfig->new($_);
$pc->make_abstract( alien_dist_dir => $dir );
($pc->{package}, $pc)
} @$pc_files;
$pc_objects{_manual} = $self->alien_generate_manual_pkgconfig($dir)
or croak "Could not autogenerate pkgconfig information";
$self->config_data( pkgconfig => \%pc_objects );
return \%pc_objects;
}
sub alien_generate_manual_pkgconfig {
my $self = shift;
my ($dir) = @_;
my $paths = $self->alien_find_lib_paths($dir);
my @L =
map { File::Spec->catdir( '-L${alien_dist_dir}', $_ ) }
@{$paths->{lib}};
my $provides_libs = $self->alien_provides_libs;
#if no provides_libs then generate -l list from found files
unless ($provides_libs) {
my @files = map { "-l$_" } @{$paths->{so_files}};
$provides_libs = join( ' ', @files );
}
my $libs = join( ' ', @L, $provides_libs );
my @I =
map { File::Spec->catdir( '-I${alien_dist_dir}', $_ ) }
@{$paths->{inc}};
my $provides_cflags = $self->alien_provides_cflags;
push @I, $provides_cflags if $provides_cflags;
my $cflags = join( ' ', @I );
my $manual_pc = Alien::Base::PkgConfig->new({
package => $self->alien_name,
vars => {
alien_dist_dir => $dir,
},
keywords => {
Cflags => $cflags || '',
Libs => $libs || '',
Version => '',
},
});
return $manual_pc;
}
sub alien_find_lib_paths {
my $self = shift;
my ($dir) = @_;
my $libs = $self->alien_provides_libs;
my @libs;
@libs = map { /-l(.*)/ ? $1 : () } split /\s+/, $libs if $libs;
$libs[0] = '' unless @libs; #find all so files if no provides_libs;
my $ext = $self->config('so'); #platform specific .so extension
my @so_files = sort #easier testing
map { File::Spec->abs2rel( $_, $dir ) } # make relative to $dir
map { @{ $self->rscan_dir($dir, qr/$_\.$ext$/) } } #find all .so
@libs;
my @lib_paths = uniq
map { File::Spec->catdir($_) } # remove trailing /
map { ( File::Spec->splitpath($_) )[1] } # get only directory
@so_files;
@so_files =
map { my $file = $_; $file =~ s/^(?:lib)?(.*?)\.$ext$/$1/; $file }
map { ( File::Spec->splitpath($_) )[2] }
@so_files;
my @inc_paths = uniq
map { File::Spec->catdir($_) } # remove trailing /
map { ( File::Spec->splitpath($_) )[1] } # get only directory
map { File::Spec->abs2rel( $_, $dir ) } # make relative to $dir
map { @{ $self->rscan_dir($dir, qr/$_\.h$/) } } #find all .so
@libs;
return { lib => \@lib_paths, inc => \@inc_paths, so_files => \@so_files };
}
1;
__END__
__POD__
=head1 NAME
Alien::Base::ModuleBuild - A Module::Build subclass for building Alien:: modules and their libraries
=head1 SYNOPSIS
=head1 DESCRIPTION
=head1 GUIDE TO DOCUMENTATION
The documentation for C<Module::Build> is broken up into sections:
=over
=item General Usage (L<Module::Build>)
This is the landing document for L<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 C<Module::Build> scripts 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. L<Module::Build::API>
is of particular importance to authors.
=item Alien-Specific Usage (L<Alien::Base::ModuleBuild>)
This is the document you are currently reading.
=item Authoring Reference (L<Alien::Base::Authoring>)
This document describes the structure and organization of
C<Alien::Base> based projects, beyond that contained in
C<Module::Build::Authoring>, and the relevant concepts needed by authors who are
writing F<Build.PL> scripts for a distribution or controlling
C<Alien::Base::ModuleBuild> processes programmatically.
Note that as it contains information both for the build and use phases of
L<Alien::Base> projects, it is located in the upper namespace.
=item API Reference (L<Alien::Base::ModuleBuild::API>)
This is a reference to the C<Alien::Base::ModuleBuild> API beyond that contained
in C<Module::Build::API>.
=back
=head1 AUTHOR
Joel Berger <joel.a.berger@gmail.com>
=head1 SEE ALSO
=over
=item *
L<Module::Build>
=item *
L<Alien>
=item *
L<Alien::Base>
=back
=head1 SOURCE REPOSITORY
L<http://github.com/jberger/Alien-Base>
=head1 AUTHOR
Joel Berger, E<lt>joel.a.berger@gmail.comE<gt>
=head1 COPYRIGHT AND LICENSE
Copyright (C) 2012 by Joel Berger
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut
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