From: Aaron Patterson <aaron@...>
Date: 2009-10-20T06:17:42+09:00
Subject: [ruby-core:26170] Re: RbConfig::...[prefix] not sensible on OS X 10.5?

Joshua ben Jore wrote:
> Today, I found this points to a nonsensical location.
> 
>     require 'rbconfig'
>     ruby = File.join(
>         RbConfig::CONFIG['prefix'],
>         RbConfig::CONFIG['ruby_install_name'] + RbConfig::CONFIG['EXEEXT'] )
>     system "#{ruby} -e 1"
> 
> prefix is /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr
> but should be /usr/bin. The interpreter needs a way to find itself
> without trusting $PATH because there are multiple interpreters on the
> same machine.
> 
> Or... is it sensible to stash the original C argv[0] somewhere? Right
> now we seem to ignore it.

I think the "prefix" is correct.  Did you mean "bindir":


ruby = File.join(
  RbConfig::CONFIG['bindir'],
  RbConfig::CONFIG['ruby_install_name'] + RbConfig::CONFIG['EXEEXT'] )

puts ruby

-- 
Aaron Patterson
http://tenderlovemaking.com/