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}

if (!$config && $downloads_are_ok) {
    $source_tree = "./gdal";
    download_and_compile_gdal($my_gdal_version);
    $config = "$source_tree/apps/gdal-config";
}

my $gdal_version = get_gdal_version($config);
my @gdal_version = split /\./, $gdal_version;
die "Bad GDAL version number: $gdal_version" if @gdal_version != 3;

my $different_versions = "@gdal_version[0..1]" ne "@my_gdal_version[0..1]";

my $msg = <<end;

The version of the GDAL development files you spefied is different
from the version these bindings were developed for (I have
$my_gdal_version and $config has $gdal_version). 
You can either

- get GDAL development files from http://download.osgeo.org/gdal/ or
  from wherever you get development files for your system,

- specify another gdal-config,

- allow building against a different version of GDAL development files
  (with --no-version-check or by setting the environment variable
  PERL_GDAL_NO_VERSION_CHECK to a true value) - this is however not
  recommended, or

- let me download and build GDAL for you. It will happen automatically
  if you clear the command line and remove environment variables that
  may prevent it (see --help).

end

die $msg if ($gdal_config && $different_versions && !$versions_may_differ) ||
    (!$downloads_are_ok && $different_versions && !$versions_may_differ);

if ($different_versions && !$gdal_config && !$versions_may_differ && $downloads_are_ok) {
    $source_tree = './gdal';
    download_and_compile_gdal($my_gdal_version, $gdal_version);
    $config = "$source_tree/apps/gdal-config";
}

my ($INC, $LIB, $objects) = get_config($config);

if ($ARGV{'--debug'}) {
    print "LIB = $LIB\n";
    print "INC = $INC\n";
}

install_share 'gdal/data' if -d 'gdal';

for my $module (sort keys %$objects) {
    my $add = $module;
    $add =~ s/:/_/g;
    my $LD = $Config{ld};
    $LD .= ' '.$ENV{CFLAGS} if $ENV{CFLAGS};
    $LD .= ' '.$ENV{LDFLAGS} if $ENV{LDFLAGS};
    my $OPTIMIZE = '';
    $OPTIMIZE .= ' '.$ENV{CFLAGS} if $ENV{CFLAGS};
    $OPTIMIZE .= ' '.$ENV{CPPFLAGS} if $ENV{CFLAGS};
    
    my %PM = ( 'lib/Geo/GDAL.pm' => '$(INST_LIBDIR)/GDAL.pm',
               'lib/Geo/OGR.pm' => '$(INST_LIBDIR)/OGR.pm',
               'lib/Geo/OSR.pm' => '$(INST_LIBDIR)/OSR.pm',
               'lib/Geo/GDAL/Const.pm' => '$(INST_LIBDIR)/GDAL/Const.pm' );
    
    $PM{'lib/Geo/GNM.pm'} = '$(INST_LIBDIR)/GNM.pm' if $objects->{'Geo::GNM'};

    WriteMakefile( NAME => $module,
                   VERSION_FROM => 'lib/Geo/GDAL.pm',
                   ABSTRACT => 'Perl extension for the GDAL library for geospatial data',
                   AUTHOR => 'Ari Jolma <ari.jolma at gmail.com>',
                   LICENSE => 'mit',
                   META_MERGE => {
                       'meta-spec' => { version => 2 },
                       resources => {
                           repository => {
                               type => 'svn',
                               url  => 'https://svn.osgeo.org/gdal/trunk/gdal/swig/perl',
                               web  => 'https://trac.osgeo.org/gdal/browser/trunk/gdal/swig/perl',
                           },
                       },
                   },
                   MAKEFILE => 'Makefile_'.$add,
                   LIBS => $LIB,
                   INC => $INC,
                   OPTIMIZE => $OPTIMIZE,
                   LD => $LD,
                   OBJECT => $objects->{$module},
                   PM => \%PM,
                   CONFIGURE_REQUIRES => {
                       'strict' => 0,
                       'warnings' => 0,
                       'File::Basename' => 0,
                       'ExtUtils::MakeMaker' => 0,
                       'Config' => 0,
                       'Cwd' => 0,
                       'File::Fetch' => 0,
                       'Capture::Tiny' => 0,
                   },
                   BUILD_REQUIRES => {
                       'strict' => 0,
                       'warnings' => 0,
                       'File::Basename' => 0,
                       'ExtUtils::MakeMaker' => 0,
                       'Config' => 0,
                       'File::Fetch' => 0,
                       'Capture::Tiny' => 0,
                       'Cwd' => 0,
		       'File::ShareDir::Install' => 0,
		       'LWP::Simple' => 0
                   },
                   PREREQ_PM => {
                       Carp => 0,
                       Encode => 0,
                       'Scalar::Util' => 0,
                       POSIX => 0