Build.PL

   1 #!/usr/bin/perl -w
   2
   3 # This script has been heavily modified from the Device::Cdio Build.PL
   4 # Jonathan Leto <jonathan@leto.net>
   5 #    Copyright (C) 2006 Rocky Bernstein <rocky@cpan.org>
   6 #
   7 #    This program is free software; you can redistribute it and/or modify
   8 #    it under the terms of the GNU General Public License as published by
   9 #    the Free Software Foundation; either version 2 of the License, or
  10 #    (at your option) any later version.
  11 #
  12 #    This program is distributed in the hope that it will be useful,
  13 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 #    GNU General Public License for more details.
  16 #
  17 #    You should have received a copy of the GNU General Public License
  18 #    along with this program; if not, write to the Free Software
  19 #    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20 use strict;
  21 use warnings;
  22 use Config;
  23 use Data::Dumper;
  24 use Module::Build;
  25 use lib 'inc';
  26 use GSLBuilder;
  27
  28 BEGIN {
  29     eval { require ExtUtils::PkgConfig };
  30     if ($@) {
  31         print "\nI see that you are a CPANTester, you really should install ExtUtils::PkgConfig !\n"
  32             if $ENV{AUTOMATED_TESTING};
  33         print <<EXIT;
  34 ExtUtils::PkgConfig is currently needed to find GSL for the compilation of this module.
  35 It may be bundled with Math::GSL in the future.
  36 EXIT
  37         exit 0;
  38     }
  39 }
  40
  41
  42
  43 sub try_compile {
  44     my ($c, %args) = @_;
  45
  46     my $ok = 0;
  47     my $tmp = "tmp$$";
  48     local(*TMPC);
  49
  50     my $obj_ext = $Config{_o} || ".o";
  51     unlink("$tmp.c", "$tmp$obj_ext");
  52
  53     if (open(TMPC, ">", "$tmp.c")) {
  54         print TMPC $c;
  55         close(TMPC);
  56
  57         my $cccmd = $args{cccmd};
  58         my $errornull;
  59         my $ccflags =  $Config{'ccflags'};
  60     $ccflags .= " $args{ccflags}" if $args{ccflags};
  61
  62     if ($args{silent} ) {
  63             $errornull = "2>/dev/null" unless defined $errornull;
  64         } else {
  65             $errornull = '';
  66         }
  67
  68     $cccmd = "$Config{'cc'} -o $tmp $ccflags $tmp.c $errornull"
  69             unless defined $cccmd;
  70
  71         printf "cccmd = $cccmd\n" if $args{verbose};
  72         my $res = system($cccmd);
  73         $ok = defined($res) && $res == 0;
  74
  75         if ( !$ok ) {
  76             my $errno = $? >> 8;
  77             local $! = $errno;
  78             print "
  79
  80 *** The test compile of '$tmp.c' failed: status $?
  81 *** (the status means: errno = $errno or '$!')
  82 *** DO NOT PANIC: this just means that *some* you may get some innocuous
  83 *** compiler warnings.
  84 ";
  85         }
  86         unlink("$tmp.c");
  87
  88     }
  89     return $ok;
  90 }
  91
  92 sub try_cflags ($) {
  93     my ($ccflags) = @_;
  94     my $c_prog = "int main () { return 0; }\n";
  95     print "Checking if $Config{cc} supports \"$ccflags\"...";
  96     my $result = try_compile($c_prog, ccflags=>$ccflags);
  97     if ($result) {
  98         print "yes\n";
  99         return " $ccflags";
 100     }
 101     print "no\n";
 102     return '';
 103
 104 }
 105
 106 print "Checking for GSL..";
 107 my %gsl_pkgcfg = ExtUtils::PkgConfig->find ('gsl');
 108
 109 my $MIN_GSL_VERSION = "1.8";
 110 my $gv = $gsl_pkgcfg{'modversion'};
 111 my $current_minor_version;
 112
 113 if (defined $gv) {
 114   if ($gv =~ m{\A(\d+(?:\.\d+)+)}) {
 115     my @current= split /\./, $1;
 116     my @min= split /\./, $MIN_GSL_VERSION;
 117     $current_minor_version = $current[1];
 118     unless ($current[0] >= $min[0] && $current[1] >= $min[1]) {
 119             printf "
 120 ***
 121 *** You need to have GSL %s or greater installed. (You have $gv).
 122 *** Get GSL at http://www.gnu.org/software/gsl\n", $MIN_GSL_VERSION;
 123             exit 1;
 124         } else {
 125             print "Found GSL version $gv\n";
 126
 127         }
 128     } else {
 129         print "
 130 ***
 131 *** Can't parse GSL version $gv.
 132 *** Will continue and keep my fingers crossed for luck.
 133 ";
 134     }
 135 } else {
 136     print "
 137 ***
 138 *** Can't find GSL configuration info. Is GSL installed?
 139 *** Get GSL at http://www.gnu.org/software/gsl
 140 ";
 141     exit 1;
 142 }
 143
 144
 145 my $ccflags = $gsl_pkgcfg{cflags};
 146
 147 ## Swig produces a number of GCC warnings. Turn them off if we can.
 148 $ccflags .= try_cflags("-Wno-strict-aliasing");
 149 $ccflags .= try_cflags("-Wno-unused-function");
 150 $ccflags .= try_cflags("-Wno-unused-value");
 151 $ccflags .= try_cflags("-Wno-unused-function");
 152 $ccflags .= try_cflags("-Wno-unused-variable");
 153
 154 my $ldflags    = "$gsl_pkgcfg{libs} -gsl";
 155 my $swig_flags = "$gsl_pkgcfg{cflags}"; # -Wall is a bit much
 156
 157 if ( $^O eq 'cygwin'  && $Config{shrpenv} =~ m{\Aenv LD_RUN_PATH=(.*)\Z} ) {
 158     $ldflags .= " -L$1 -lperl";
 159     # Should we check the 32-ness?
 160     $swig_flags = '-DNEED_LONG';
 161 } elsif ( $^O eq 'darwin' ) {
 162     $ldflags .= ' -bundle -flat_namespace ';
 163 } elsif ($Config{archname} =~ /x86_64/ ) {
 164     $ldflags .= ' -fPIC ';
 165     $ccflags .= ' -fPIC ';
 166 }
 167 my @Subsystems = sort qw/
 168             BLAS         Diff          Machine    Statistics
 169             Eigen        Matrix        Poly       Wavelet2D
 170             BSpline      Errno         PowInt     Wavelet
 171             CBLAS        FFT           Min
 172             CDF          Fit           QRNG
 173             Chebyshev    Monte         RNG
 174             Heapsort     Multifit      Randist      Sum
 175             Combination  Histogram     Multimin     Roots
 176             Complex      Histogram2D   Multiroots   SF
 177             Const        Siman         IEEEUtils    Sys
 178             Integration  NTuple        Sort
 179             DHT          Interp        ODEIV        Vector
 180             Deriv        Linalg        Permutation  Spline
 181 /;
 182
 183 # BSplines appeared in 1.9
 184 if ($current_minor_version < 9 ) {
 185    @Subsystems = grep { ! /BSpline/ } @Subsystems;
 186 }
 187 my $cleanup = qq{core *.core Makefile Math-GSL-* tmp* pod2ht*.tmp _build blib *.so *.orig };
 188
 189 my $builder = GSLBuilder->new(
 190     module_name         => 'Math::GSL',
 191     add_to_cleanup      => [ $cleanup ],
 192     create_makefile_pl  => 'passthrough',
 193     dist_abstract       => 'Interface to the GNU Scientific Library using SWIG',
 194     dist_author         => 'Jonathan Leto <jonathan@leto.net>',
 195     dist_version_from   => 'lib/Math/GSL.pm',
 196     include_dirs            => q{},
 197     extra_linker_flags  => '-shared ' . $ldflags,
 198     extra_compiler_flags=> $ccflags,
 199     swig_flags          => $swig_flags,
 200     license             => 'gpl',
 201     requires => {
 202         'ExtUtils::PkgConfig'   =>  '1.03',
 203         'Scalar::Util'          =>       0,
 204         'Test::More'            =>       0,
 205         'Test::Exception'       =>    0.21,
 206         'Test::Class'           =>    0.12,
 207         version                 =>       0,
 208         perl                            =>  '5.8.0',
 209     },
 210     sign                  => 0,
 211     swig_source           => [
 212                                 map { [ "$_.i" ] } @Subsystems
 213                              ],
 214 );
 215 $builder->add_build_element('swig');
 216 $builder->create_build_script();
 217 print "Have a great day!\n";