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#! perl
# Copyright (C) 2009 The Perl Foundation
use strict;
use warnings;
use 5.008;
my %valid_options = (
'help' => 'Display configuration help',
'parrot-config' => 'Use configuration given by parrot_config binary',
'gen-parrot' => 'Automatically retrieve and build Parrot',
);
# Get any options from the command line
my %options = get_command_options();
# Print help if it's requested
if ($options{'help'}) {
print_help();
exit(0);
}
# Update/generate parrot build if needed
if ($options{'gen-parrot'}) {
system("$^X build/gen_parrot.pl");
}
# Get a list of parrot-configs to invoke.
my @parrot_config_exe = qw(
parrot/parrot_config
../../parrot_config
parrot_config
);
if ($options{'parrot-config'} && $options{'parrot-config'} ne '1') {
@parrot_config_exe = ($options{'parrot-config'});
}
# Get configuration information from parrot_config
my %config = read_parrot_config(@parrot_config_exe);
unless (%config) {
die <<'END';
Unable to locate parrot_config.
To automatically checkout (svn) and build a copy of parrot,
try re-running Configure.pl with the '--gen-parrot' option.
Or, use the '--parrot-config' option to explicitly specify
the location of parrot_config.
END
}
# Create the Makefile using the information we just got
create_makefile(%config);
# Done.
done();
# Process command line arguments into a hash.
sub get_command_options {
my %options = ();
for my $arg (@ARGV) {
if ($arg =~ /^--(\w[-\w]*)(?:=(.*))?/ && $valid_options{$1}) {
my ($key, $value) = ($1, $2);
$value = 1 unless defined $value;
$options{$key} = $value;
next;
}
die qq/Invalid option "$arg". See "perl Configure.pl --help" for valid options.\n/;
}
return %options;
}
sub read_parrot_config {
my @parrot_config_exe = @_;
my %config = ();
for my $exe (@parrot_config_exe) {
no warnings;
if (open my $PARROT_CONFIG, '-|', "$exe --dump") {
print "Reading configuration information from $exe\n";
while (<$PARROT_CONFIG>) {
if (/(\w+) => '(.*)'/) { $config{$1} = $2 }
}
close $PARROT_CONFIG or die $!;
last if %config;
}
}
return %config;
}
# Generate a Makefile from a configuration
sub create_makefile {
my %config = @_;
my $infile = 'build/Makefile.in';
open my $ROOTIN, '<', $infile or
die "Unable to read $infile\n";
my $maketext = join('', <$ROOTIN>);
close $ROOTIN or die $!;
$config{'win32_libparrot_copy'} = $^O eq 'MSWin32' ? 'copy $(BUILD_DIR)\libparrot.dll .' : '';
$maketext =~ s/@(\w+)@/$config{$1}/g;
if ($^O eq 'MSWin32') {
$maketext =~ s{/}{\\}g;
}
my $outfile = 'Makefile';
print "Creating $outfile\n";
open(my $MAKEOUT, '>', $outfile) ||
die "Unable to write $outfile\n";
print {$MAKEOUT} $maketext;
close $MAKEOUT or die $!;
return;
}
sub done {
my $make = $config{'make'};
print <<"END";
You can now use '$make' to build Rakudo Perl.
After that, you can use '$make test' to run some local tests,
or '$make spectest' to check out (via svn) a copy of the Perl 6
official test suite and run its tests.
END
exit 0;
}
# Print some help text.
sub print_help {
print <<'END';
Configure.pl - Rakudo Configure
General Options:
--help Show this text
--gen-parrot Download and build a copy of Parrot to use
--parrot-config=(config)
Use configuration information from config
END
return;
}
# Local Variables:
# mode: cperl
# cperl-indent-level: 4
# fill-column: 100
# End:
# vim: expandtab shiftwidth=4:
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