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package Alien::Build::Plugin::Probe::CBuilder; use strict; use warnings; use 5.008004; use Alien::Build::Plugin; use File::chdir; use File::Temp (); use Capture::Tiny qw( capture_merged capture ); use Alien::Util qw( version_cmp ); # ABSTRACT: Probe for system libraries by guessing with ExtUtils::CBuilder our $VERSION = '2.80'; # VERSION has options => sub { {} }; has cflags => ''; has libs => ''; has program => 'int main(int argc, char argv[]) { return 0; }'; has version => undef; has 'atleast_version' => undef; has aliens => []; has lang => 'C'; sub init { my($self, $meta) = @_; $meta->add_requires('configure' => 'ExtUtils::CBuilder' => 0 ); if(@{ $self->aliens }) { die "You can't specify both 'aliens' and either 'cflags' or 'libs' for the Probe::CBuilder plugin" if $self->cflags \|\| $self->libs; $meta->add_requires('configure' => $_ => 0 ) for @{ $self->aliens }; $meta->add_requires('Alien::Build::Plugin::Probe::CBuilder' => '0.53'); my $cflags = ''; my $libs = ''; foreach my $alien (@{ $self->aliens }) { my $pm = "$alien.pm"; $pm =~ s/::/\//g; require $pm; $cflags .= $alien->cflags . ' '; $libs .= $alien->libs . ' '; } $self->cflags($cflags); $self->libs($libs); } my @cpp; if($self->lang ne 'C') { $meta->add_requires('Alien::Build::Plugin::Probe::CBuilder' => '0.53'); @cpp = ('C++' => 1) if $self->lang eq 'C++'; } $meta->register_hook( probe => sub { my($build) = @_; $build->hook_prop->{probe_class} = __PACKAGE__; $build->hook_prop->{probe_instance_id} = $self->instance_id; local $CWD = File::Temp::tempdir( CLEANUP => 1, DIR => $CWD ); open my $fh, '>', 'mytest.c'; print $fh $self->program; close $fh; $build->log("trying: cflags=@{[ $self->cflags ]} libs=@{[ $self->libs ]}"); my $cb = ExtUtils::CBuilder->new(%{ $self->options }); my($out1, $obj) = capture_merged { eval { $cb->compile( source => 'mytest.c', extra_compiler_flags => $self->cflags, @cpp, ); } }; if(my $error = $@) { $build->log("compile failed: $error"); $build->log("compile failed: $out1"); die $error; } my($out2, $exe) = capture_merged { eval { $cb->link_executable( objects => [$obj], extra_linker_flags => $self->libs, ); } }; if(my $error = $@) { $build->log("link failed: $error"); $build->log("link failed: $out2"); die $error; } my($out, $err, $ret) = capture { system($^O eq 'MSWin32' ? $exe : "./$exe") }; die "execute failed" if $ret; my $cflags = $self->cflags; my $libs = $self->libs; $cflags =~ s{\s$}{ }; $libs =~ s{\s*$}{ }; $build->install_prop->{plugin_probe_cbuilder_gather}->{$self->instance_id} = { cflags => $cflags, libs => $libs, }; if(defined $self->version) { my($version) = $out =~ $self->version; if (defined $self->atleast_version) { if(version_cmp ($version, $self->atleast_version) < 0) { die "CBuilder probe found version $version, but at least @{[ $self->atleast_version ]} is required."; } } $build->hook_prop->{version} = $version; $build->install_prop->{plugin_probe_cbuilder_gather}->{$self->instance_id}->{version} = $version; } 'system'; } ); $meta->register_hook( gather_system => sub { my($build) = @_; return if $build->hook_prop->{name} eq 'gather_system' && ($build->install_prop->{system_probe_instance_id} \|\| '') ne $self->instance_id; if(my $p = $build->install_prop->{plugin_probe_cbuilder_gather}->{$self->instance_id}) { $build->runtime_prop->{$_} = $p->{$_} for keys %$p; } }, ); } 1; __END__ =pod =encoding UTF-8 =head1 NAME Alien::Build::Plugin::Probe::CBuilder - Probe for system libraries by guessing with ExtUtils::CBuilder =head1 VERSION version 2.80 =head1 SYNOPSIS use alienfile; plugin 'Probe::CBuilder' => ( cflags => '-I/opt/libfoo/include', libs => '-L/opt/libfoo/lib -lfoo', ); alternately: ues alienfile; plugin 'Probe::CBuilder' => ( aliens => [ 'Alien::libfoo', 'Alien::libbar' ], ); =head1 DESCRIPTION This plugin probes for compiler and linker flags using L<ExtUtils::CBuilder>. This is a useful alternative to L<Alien::Build::Plugin::PkgConfig::Negotiate> for packages that do not provide a pkg-config C<.pc> file, or for when those C<.pc> files may not be available. (For example, on FreeBSD, C<libarchive> is a core part of the operating system, but doesn't include a C<.pc> file which is usually provided when you install the C<libarchive> package on Linux). =head1 PROPERTIES =head2 options Any extra options that you want to have passed into the constructor to L<ExtUtils::CBuilder>. =head2 cflags The compiler flags. =head2 libs The linker flags =head2 program The program to use in the test. =head2 version This is a regular expression to parse the version out of the output from the test program. =head2 atleast_version The minimum required version as provided by the system. =head2 aliens List of aliens to query fro compiler and linker flags. =head2 lang The programming language to use. One of either C<C> or C<C++>. =head1 SEE ALSO L<Alien::Build>, L<alienfile>, L<Alien::Build::MM>, L<Alien> =head1 AUTHOR Author: Graham Ollis E<lt>plicease@cpan.orgE<gt> 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) Florian Weimer =head1 COPYRIGHT AND LICENSE This software is copyright (c) 2011-2022 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. =cut