From: Mike Z <zofa@...>
Date: 2004-04-30T01:03:14+09:00
Subject: Re: Ruby under Suse Linux

Mike,

What #! line are you using in your script?

It sounds like all your ruby stuff has been installed in /usr/local/, but 
your script is running the suse-supplied binary in /usr/bin.

Cheers,
Mike


On Fri, 30 Apr 2004, Mike Calder wrote:

> That's the information I wanted, thanks.  At least the reason for failure has 
> now apparently changed.
> 
> ruby -e 'p $LOAD_PATH'
> 
> gives me:
> 
> ["/usr/local/lib/ruby/site_ruby/1.8", "/usr/local/lib/ruby/site_ruby/1.8/
> i686-linux", "/usr/local/lib/ruby/site_ruby", "/usr/local/lib/ruby/1.8", "/
> usr/local/lib/ruby/1.8/i686-linux", "."]
> 
> I have made sure that the files and extensions I'm using are in one or more of 
> these (actually, everything is just about everywhere).  Presumably the search 
> sequence is as listed, and there really only needs to be one copy of 
> something in one of those?  Or is there a distinction between them?  I notice 
> that the i686-linux directories have binary libraries where the others have 
> ruby source, in general - is this a required split or just for convenience of 
> tracking? 
> 
> I have
> 
>   require 'html-parser'
> 
> and 
> 
> class MyHTMLParser < HTMLParser
> 
> in a ruby script.  I have made sure that html-parser.rb (a standard ruby 
> extension I downloaded and installed using ruby install.rb) is present (along 
> with the sgml-parser.rb it requires) in 
> 
> usr/local/lib/ruby
> usr/local/lib/ruby/1.8
> usr/local/lib/ruby/site_ruby
> usr/local/lib/ruby/site_ruby/1.8
> 
> Each copy is identical and contains the definition of 'HTMLParser'.
> 
> However, when I run my script I get
> 
> testhtml.rb:22: undefined superclass `HTMLParser' (TypeError)
> 
> The 'html-parser' is presumably now being found as I am no longer getting 
> LoadError messages, but the content (the definition  of class 'HTMLParser') 
> is not being used by my code (actually cut and pasted from a standard 
> example). 
> 
> So probably the problem has changed from me not having things in the right 
> place to not understanding how to use standard classes.
> 
> I'll give it another day.
> 
> On Thursday 29 April 2004 15:57, ts wrote:
> > >>>>> "M" == Mike Calder <ceo@phosco.com> writes:
> >
> > M> I still need to know where Ruby expects these things to be, or how to
> > specify M> (preferably in a single place, once and for all) where it should
> > look.
> >
> >
> >  Well, I don't understand : if you follow the instructions in the README
> >  file, you'll not have a problem and ruby will automatically find it.
> >
> >  The only possibility that I see, is that you use one version of ruby to
> >  make the installation and then try to use these extensions with another
> >  version of ruby
> >
> >  Try to do
> >
> >    ruby -e 'p $LOAD_PATH'
> >
> >  and you'll see where ruby look to find the libraries
> >
> >
> >
> > Guy Decoux
> 
> 

-- 
Mike Z <zofa@wyer.org> - it's an apathy thing