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package BoxPlatform;
use Exporter;
@ISA = qw/Exporter/;
@EXPORT = qw/$build_os $build_cpu $target_os $make_command $bsd_make $platform_define $platform_cpu $gcc_v3 $product_version $product_name $install_into_dir $sub_make_options $platform_compile_line_extra $platform_link_line_extra $platform_lib_files $platform_exe_ext/;

BEGIN
{

	# which OS are we building under?
	$build_os = `uname`;
	chomp $build_os;
	$build_cpu = `uname -p`;
	chomp $build_cpu;
	# Cygwin Builds usually something like CYGWIN_NT-5.0, CYGWIN_NT-5.1
	# Box Backup tried on Win2000,XP only :)
	
    $build_os = 'CYGWIN' if $build_os =~ m/CYGWIN/;

	$make_command = ($build_os eq 'Darwin') ? 'bsdmake' : ($build_os eq 'SunOS') ? 'gmake' : 'make';
	$bsd_make = ($build_os ne 'Linux' && $build_os ne 'CYGWIN' && $build_os ne "SunOS");

	# blank extra flags by default
	$platform_compile_line_extra = '@CPPFLAGS@ @CXXFLAGS@ @CXXFLAGS_STRICT@';
	$platform_compile_line_extra =~ s/ -O2//;
	$platform_link_line_extra = '@LDFLAGS@';
	$platform_lib_files = '@LIBS@';
	$target_os = '@target_os@';
	$platform_exe_ext = '@EXEEXT@';

	# get version
	open VERSION,"VERSION.txt" or die "VERSION.txt: $!";
	$product_version = <VERSION>;
	chomp $product_version;
	$product_name = <VERSION>;
	chomp $product_name;
	close VERSION;
	
	# where to put the files
	$install_into_dir = '@bindir@';
	
	# if it's Darwin,
	if($build_os eq 'Darwin')
	{
		# see how many processors there are, and set make flags accordingly
		my $cpus = `sysctl hw.ncpu`;
		if($cpus =~ m/hw.ncpu:\s(\d+)/ && $1 > 1)
		{
			print "$1 processors detected, will set make to perform concurrent jobs\n";
			$sub_make_options = ' -j '.($1 + 1);
		}
		
		# test for fink installation
		if(-d '/sw/include' && -d '/sw/lib')
		{
			print "Fink installation detected, will use headers and libraries\n\n\n";
			$platform_compile_line_extra = '-I/sw/include ';
			$platform_link_line_extra = '-L/sw/lib ';
		}
	}
}

sub make_flag
{
	if($bsd_make)
	{
		return "-D $_[0]"
	}
	return $_[0].'=1';
}

1;