From 3d63808fe750acf7fd7ba319ddc284e8d1e50c38 Mon Sep 17 00:00:00 2001
From: pmichaud <pmichaud@pobox.com>
Date: Tue, 27 Jul 2010 15:22:02 -0500
Subject: Add gen_parrot.pl script.

---
 build/gen_parrot.pl | 84 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 build/gen_parrot.pl

(limited to 'build')

diff --git a/build/gen_parrot.pl b/build/gen_parrot.pl
new file mode 100644
index 0000000..b5faaa2
--- /dev/null
+++ b/build/gen_parrot.pl
@@ -0,0 +1,84 @@
+#! perl
+# Copyright (C) 2009 The Perl Foundation
+
+=head1 TITLE
+
+gen_parrot.pl - script to obtain and build Parrot for Rakudo
+
+=head2 SYNOPSIS
+
+    perl gen_parrot.pl [--parrot --configure=options]
+
+=head2 DESCRIPTION
+
+Maintains an appropriate copy of Parrot in the parrot/ subdirectory.
+The revision of Parrot to be used in the build is given by the
+build/PARROT_REVISION file.
+
+=cut
+
+use strict;
+use warnings;
+use 5.008;
+
+#  Work out slash character to use.
+my $slash = $^O eq 'MSWin32' ? '\\' : '/';
+
+##  determine what revision of Parrot we require
+open my $REQ, "build/PARROT_REVISION"
+  || die "cannot open build/PARROT_REVISION\n";
+my ($reqsvn, $reqpar) = split(' ', <$REQ>);
+$reqsvn += 0;
+close $REQ;
+
+{
+    no warnings;
+    if (open my $REV, '-|', "parrot_install${slash}bin${slash}parrot_config revision") {
+        my $revision = 0+<$REV>;
+        close $REV;
+        if ($revision >= $reqsvn) { print "Parrot r$revision already available (r$reqsvn required)\n";
+            exit(0);
+        }
+    }
+}
+
+chdir('parrot-2.6.0') || die "Can't chdir to 'parrot-2.6.0': $!";
+
+
+##  If we have a Makefile from a previous build, do a 'make realclean'
+if (-f 'Makefile') {
+    my %config = read_parrot_config();
+    my $make = $config{'make'};
+    if ($make) {
+        print "\nPerforming '$make realclean' ...\n";
+        system_or_die($make, "realclean");
+    }
+}
+
+print "\nConfiguring Parrot ...\n";
+my @config_command = ($^X, 'Configure.pl', @ARGV);
+print "@config_command\n";
+system_or_die( @config_command );
+
+print "\nBuilding Parrot ...\n";
+my %config = read_parrot_config();
+my $make = $config{'make'} or exit(1);
+system_or_die($make, 'install-dev');
+
+sub read_parrot_config {
+    my %config = ();
+    if (open my $CFG, "config_lib.pir") {
+        while (<$CFG>) {
+            if (/P0\["(.*?)"], "(.*?)"/) { $config{$1} = $2 }
+        }
+        close $CFG;
+    }
+    %config;
+}
+    
+sub system_or_die {
+    my @cmd = @_;
+
+    system( @cmd ) == 0
+        or die "Command failed (status $?): @cmd\n";
+}
-- 
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