use 5.006;

use ExtUtils::MakeMaker qw(prompt WriteMakefile);

use File::Copy 'copy';

my $libs = '';

my $define = '';

for ($^O) {

  if (/svr/) {

    copy ('arch/sco.xs', 'MemInfo.xs');

    print "Sys::MemInfo for UnixWare\n";

  } elsif (/aix/) {

    copy ('arch/aix.xs', 'MemInfo.xs');

    $libs = '-lperfstat';

    print "Sys::MemInfo for AIX\n";

  } elsif (/linux/ or /cygwin/) {

    copy ('arch/linux.xs', 'MemInfo.xs');

    my $kver = `uname -r`;

    die "Error extracting kernel version.\n" unless ($kver =~ /^(\d+)\.(\d+)(?:\.(\d+))?/);

    if ($1<=2 && ($2<3 || ($2==3 && $3<17))) {

      $define = '-DOLDKERNEL';

      print "Sys::MemInfo for Linux 2.3.16 and lower\n";

    } else {

      print "Sys::MemInfo for Linux 2.3.17 and higher\n";

    }

  } elsif (/solaris/) {

    copy ('arch/solaris.xs', 'MemInfo.xs');

    print "Sys::MemInfo for Solaris\n";

  } elsif (/freebsd/) {

    copy ('arch/freebsd.xs', 'MemInfo.xs');

    $kver = `uname -r`;

    die "Error extracting kernel version.\n" unless ($kver =~ /^(\d+)\./);

    if ($1>=5) {

      $define = '-DFREEBSD5';

      print "Sys::MemInfo for FreeBSD 5 and higher\n";

    } else {

      print "Sys::MemInfo for FreeBSD 4 and lower\n";

    }

  } elsif (/bsd/) {

    copy ('arch/bsd.xs', 'MemInfo.xs');

    if (/netbsd/) {

      $define = '-DNETBSD';

      print "Sys::MemInfo for NetBSD\n";

    } else {

      print "Sys::MemInfo for *BSD\n";

    }

  } elsif (/hpux/) {

    copy ('arch/hpux.xs', 'MemInfo.xs');

    $define ='-D_XOPEN_SOURCE_EXTENDED';

    print "Sys::MemInfo for HPUX\n";

  } elsif (/dec_osf/) {

    copy ('arch/tru64.xs', 'MemInfo.xs');

    $libs='-lmach';

    print "Sys::MemInfo for Tru64\n";

  } elsif (/MSWin32/) {

    copy('arch/win32.xs', 'MemInfo.xs');

    require Win32;	

    my (undef, $version)= Win32::GetOSVersion() ;

    if ($version && 5 <= $version) {

      print "Sys::MemInfo for Windows 200X/XP/Vista and higher\n";

    } else {

      print "Sys::MemInfo for Windows 9X/ME/NT\n";

      $define='-DOLDWIN';

    }  

  } elsif (/irix/) {

    copy('arch/irix.xs', 'MemInfo.xs');

    print "Sys::MemInfo for Irix\n";

  } elsif (/darwin/) {

    copy('arch/darwin.xs', 'MemInfo.xs');

    print "Sys::MemInfo for MacOS X Darwin\n";

  } else {

    die "unsupported OS: $_\n";

  }

}

WriteMakefile(

  'NAME'         => 'Sys::MemInfo',

  'VERSION_FROM' => 'MemInfo.pm', # finds $VERSION

  'DEFINE'       => $define,

  'NORECURS'     => 1,

  'XSOPT'        => '-noprototypes',

  'XS'           => { 'MemInfo.xs'  => 'MemInfo.c', },

  clean => { 'FILES' => 'MemInfo.xs', },

  'LIBS'         => $libs,

  ($] >= 5.005 ?    ## Add these new keywords supported since 5.005

    (ABSTRACT_FROM => 'MemInfo.pm', # retrieve abstract from module

    'AUTHOR'       => 'Sylvain CRESTO <scresto@gmail.com>') : ()),

);

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