From: Albert Schlef <albertschlef@...>
Date: 2011-04-05T23:13:53+09:00
Subject: Re: Tk and Tile with Tk8.5

Hidetoshi NAGAI wrote in post #990904:
> The following depend on an unofficial feature of ruby's dll loading.
> At present, it will work. But I don't recomment it.
> [...]
> (2) Create loader script "tcltklib.rb" at ruby's library directory
>    (.e.g /usr/lib/ruby/1.8).
>    For example,
>    ----- tcltklib.rb -----------------------------------------
>    ver = ENV['RUBYTK_VERSION']
>    if ver && !ver.empty?
>      require "tcltklib.#{ver}.so"
>    else
>      require "tcltklib.so"
>    end

Hey, that's a nice trick. Thanks!

> The following depend on an unofficial feature of ruby's dll loading.
> At present, it will work. But I don't recomment it.

BTW, what's here isn't an official feature? I do "ri Kernel#require" and 
(I think) it describes everything needed to make this work: Ruby first 
looks for an .rb file (this enables us to inject our loader script), and 
then it's possible to explicitly load a .so (or .dll). So why isn't your 
trick future-proof?

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