From: timsuth@... (Tim Sutherland)
Date: 2003-11-22T11:07:16+09:00
Subject: Re: Ruby Extension/DLL Help

In article <20031116195131.125D645A800@helium.ruby-lang.org>, Andy Pelzer wrote:
>Hi,
>
>Recently i started writing a Ruby extension. This Extension is providing
>access to a dll-library. It has been written in c. Compiling works fine,
>but using it in Ruby always raises this error: "dlsym: win32 error 127
>[..] (LoadError)". What does this error mean? I think it means, that
>Ruby cannot find the dll, used by the extension, but i'm absolutely
>unsure. If this is correct, where does the dll have to be? If not, what
>does this error mean? Any suggestions how to fix this? 
>
>Environment: Ruby 1.8 on WinXp/Cygwin, compiler: gcc/make
[...]

I'm just guessing here, but I seem to recall having a similar problem when I
incorrectly capitalised the library name in `require'.

Since the Windows filesystems are not case-sensitive, the file was found and
loaded, but then the Init_Foo function could not be called. Error 127 is
"symbol not found" or similar.