Arghh!  - yes, I'd forgotten about the capitalization rules - -- 
thanks for the gentle reminder.  Wasn't familiar with the 'nm' command 
- thanks for that also.

Cheers, Dave

On Thursday, March 27, 2003, at 12:14 PM, Jim Ingham wrote:

>  David,
> 
>  Tcl is finding the shared library, if it didn't you would get a 
>  different error. BUt Tcl is not able to initialize the library because 
>  it can't find the initialization functions it expects.
> 
>  The way Tcl loads a shared library extension is it takes the name of 
>  the shared library (or the package name if you have passed that into 
>  "package require"), upper-cases the first letter, lower-cases all the 
>  others, adds _Init and looks up that symbol and runs the function.
> 
>  A common mistake is to forget the weirdo capitalization rules (which 
>  were invented to get around non-case-sensitive file systems).
> 
>  Does your library indeed define Crax_Init and Crax_SafeInit functions? 
>   And are they exported?
> 
>  You can use
> 
>  nm /Users/drobin/Library/Tcl/CRAX/CRAX.dylib
> 
>  You should see a "T" symbol (exported text) for both of these.
> 
>  Jim
> 
>  On Thursday, March 27, 2003, at 10:51  AM, David Robinson wrote:
> 
> > Okay I realize that this is going to be a rather vague question and I 
> > apologize in advance but I'm not sure how to approach this.
> >
> > We've succeeded in building a Tcl extension in a fashion similar to 
> > TclSpeech (called CRAX).  However, when we execute 'package require 
> > CRAX' the following dump appears in the Wish console:
> >
> > -------------------------------------------------------
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>  --
>  Jim Ingham                                   jingham@[...].com
>  Developer Tools
>  Apple Computer
> 
> 




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