From 3c4380ad25c26a8b4349df4f1296286517aa3118 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 14 Sep 2009 21:43:00 +0000
Subject: * tool/rbinstall.rb (parse_args): show help message and exit if  
 rbconfig could not load.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@24930 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 tool/rbinstall.rb | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

(limited to 'tool')

diff --git a/tool/rbinstall.rb b/tool/rbinstall.rb
index 6d272907b8..4263cdaced 100755
--- a/tool/rbinstall.rb
+++ b/tool/rbinstall.rb
@@ -1,8 +1,13 @@
 #!./miniruby
 
-load "./rbconfig.rb"
-include RbConfig
-$".unshift File.expand_path("./rbconfig.rb")
+begin
+  load "./rbconfig.rb"
+rescue LoadError
+  CONFIG = Hash.new {""}
+else
+  include RbConfig
+  $".unshift File.expand_path("./rbconfig.rb")
+end
 
 srcdir = File.expand_path('../..', __FILE__)
 unless defined?(CROSS_COMPILING) and CROSS_COMPILING
@@ -35,7 +40,7 @@ def parse_args(argv = ARGV)
   $cmdtype = ('bat' if File::ALT_SEPARATOR == '\\')
   mflags = []
   opt = OptionParser.new
-  opt.on('-n') {$dryrun = true}
+  opt.on('-n', '--dry-run') {$dryrun = true}
   opt.on('--dest-dir=DIR') {|dir| $destdir = dir}
   opt.on('--extout=DIR') {|dir| $extout = (dir unless dir.empty?)}
   opt.on('--make=COMMAND') {|make| $make = make}
@@ -79,6 +84,11 @@ def parse_args(argv = ARGV)
     end
   end rescue abort "#{$!.message}\n#{opt.help}"
 
+  unless defined?(RbConfig)
+    puts opt.help
+    exit
+  end
+
   $make, *rest = Shellwords.shellwords($make)
   $mflags.unshift(*rest) unless rest.empty?
   $mflags.unshift(*mflags)
-- 
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