Re: gEDA-user: gnetlist l and m options

[Peter Clifton <pcjc2@xxxxxxxxx>]

On Fri, 2008-01-04 at 23:51 -0500, Paul Tan wrote:
> Hi Peter C,
> 
> I have not looked into your changes yet,
> so I don't know the details.
> 
> There may be one other thing you
> could try:
> 
> (define packages '())
> (define (fill_packages) ......
>  ...
>  (set! packages ....)
> )
> 
> Use the procedure to fill the packages.
> Call that procedure (fill_packages) as late as u want.

That sounds like a possible workaround, however it does require either:

a) an arbitrary scheme file to be run after the traversal, where we can 
   put a call to (fill_packages ), which is what I have in 
   gnetlist-post.scm (I might as well just move the existing code).

b) Hard-coding the call to (fill_packages ), and several others in 
   gnetlist, to be called before the netlister (unspeakably bad)

c) Updating every backend to call (fill_packages ) - in which case, I'd 
   probably drop "packages" being defined in gnetlist.scm in the first 
   place, and make the backends call the appropriate gnetlist function,
   (gnetlist:get-packages "placeholder") directly.


> Hope that would help.

Any help with scheme syntax and ideology is always keenly appreciated.

Thanks!

-- 
Peter Clifton

Electrical Engineering Division,
Engineering Department,
University of Cambridge,
9, JJ Thomson Avenue,
Cambridge
CB3 0FA

Tel: +44 (0)7729 980173 - (No signal in the lab!)



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