#
# Makefile.PL for PDL::IO::GD
#
# Judd Taylor, USF IMaRS
# 12 April 2006
#

use ExtUtils::MakeMaker;
use Config;
PDL::Core::Dev->import();

BEGIN
{
    # Generic descripton of how to optionally add this package to the PDL Tree:
    $ppfile = "GD.pd";
    $package_name = "PDL::IO::GD";
    $lib_name = "GD";
    $find_libs = [ 'libgd.so', 'libgd.a', 'bgd.dll' ];
    $find_incs = [ 'gd.h' ];
    $config_flag = 'WITH_GD';
    $config_libs = 'GD_LIBS';
    $config_incs = 'GD_INC';
    @lib_locations = (
        '/usr/lib64',
        '/usr/local/lib64',
        '/lib64',
        '/usr/lib',
        '/usr/local/lib',
        '/lib',
        split(/ /, $Config{libpth}),
    );
    @inc_locations = (
        '/usr/include',
        '/usr/local/include',
        $Config{usrinc},
    ); 
    
    #
    # You probably won't need to edit anything below here (until the very end):
    #

    $msg = "";
    $forcebuild=0; 

    if (defined $PDL::Config{$config_flag} && $PDL::Config{$config_flag}==0) 
    {
        $msg = "\n   Will skip build of $package_name on this system   \n";
        goto skip;
    }
    
    if (defined $PDL::Config{$config_flag} && $PDL::Config{$config_flag}==1) 
    {
        print "\n   Will forcibly try and build $package_name on this system   \n\n";
        $forcebuild=1;
    }
    
    # Look for GD includes/libs

    # get locations from perldl.conf, if specified there:
    @lib_locations = @{$PDL::Config{$config_libs}} 
        if( defined $PDL::Config{$config_libs} );
    @inc_locations = @{$PDL::Config{$config_incs}} 
        if( defined $PDL::Config{$config_incs} );

    #
    # Do the search:
    #
    # Look for the libs:
    foreach my $libdir ( @lib_locations ) 
    {
        my $found = 0;
        foreach my $find_lib ( @$find_libs )
        {
            if ( -e "$libdir/$find_lib" ) 
            {
                $lib_path = $libdir;
                $found = 1;
                # The lib name is different on windows, so we need to adjust the LIBS, below:
                $linkname = ( $find_lib =~ /bgd.dll/ ) ? 'bgd' : 'gd';
            }
            last if $found;
        }
        last if $found;
    } # foreach $libdir...

    unless( defined( $lib_path ) )
    {
        $msg .= "Cannot find $lib_name library, $find_lib.\n"
              . "Please add the correct library path to Makefile.PL or install $lib_name\n.";
    }

    # Look for the include files:
    foreach my $incdir ( @inc_locations ) 
    {
        foreach my $find_inc ( @$find_incs )
        {
            if ( -e "$incdir/$find_inc" ) 
            {
                $include_path = $incdir;
                last;
            }
        }
    }

    unless( defined( $include_path ) )
    {
        $msg .= "Cannot find $lib_name header file, $find_inc.\n"
              . "Please add the correct library path to Makefile.PL or install $lib_name.\n";
    }
    
    #
    # Make sure everything we wanted is found:
    #
    $donot = 1;
    if( defined( $include_path ) && defined( $lib_path ) )
    {
        $donot = 0;
    }
    
    $donot = 0 if( $forcebuild );
    
    if ( $donot )
    {
        $msg .= "\n Skipping build of $package_name.\n";
    }
    
skip:
    
    if ($msg ne "" && $forcebuild==0) 
    {
        warn $msg . "\n";
        $msg =~ s/\n//g;
        write_dummy_make( $msg );
        $donot = 1;
        $PDL::Config{$config_flag}=0;
    } 
    else 
    {
        $PDL::Config{$config_flag}=1;
        print "\n   Building $package_name. Turn off $config_flag if there are any problems\n\n";
    }

} # BEGIN...

return if $donot;

$package = [$ppfile, $lib_name, $package_name];
%hash = pdlpp_stdargs($package);
$hash{VERSION_FROM} = $ppfile;
$hash{LIBS} = ["-L$lib_path -l$linkname"];
$hash{INC} = PDL_INCLUDE() . " -I$include_path";
push( @{ $hash{TYPEMAPS} }, 'typemap' );

WriteMakefile(%hash);

sub MY::postamble { pdlpp_postamble_int( $package ); }

#@pack = ( $package );
#sub MY::postamble { pdlpp_postamble_int(@::pack); }