use strict;
use warnings;

use 5.008000;
use Module::Build;

my $min_gsl_version = 1.15;

sub exit_early {
  my $message = shift || "";

  print "PerlGSL::DiffEq requires GSL version >= $min_gsl_version" . $message . "\n";
  exit 0;
}

my $gsl_version = qx/ gsl-config --version /;
exit_early("\n [gsl-config --version: $!]") if ($?);

chomp($gsl_version);

if ($gsl_version < $min_gsl_version) {
  exit_early(", but you only have $gsl_version");
} 

my $gsl_libs = qx! gsl-config --libs !;

my $build = Module::Build->new(
    module_name       => 'PerlGSL::DiffEq',
    dist_version_from => 'lib/PerlGSL/DiffEq.pm',
    dist_abstract     => 'A Perlish Interface to Solving ODEs using GSL v1.15+',
    dist_author       => 'Joel Berger <joel.a.berger@gmail.com>',
    license           => 'perl',
    requires          => {
      'perl' => '5.008',
      parent => 0,
    },
    configure_requires => {
      'Module::Build' => 0.38,
    },
    build_requires    => {
      'ExtUtils::CBuilder' => 0,
    },
    c_source => 'src',
    extra_compiler_flags => '-Isrc',
    extra_linker_flags => $gsl_libs,
  meta_merge => {
    resources  => {
      repository => "http://github.com/jberger/PerlGSL-DiffEq",
      bugtracker => "http://github.com/jberger/PerlGSL-DiffEq/issues",
    },
    no_index => {
      file => [ 'README.pod' ],
    },
  },
);

$build->create_build_script;