RE: [sv-bc] Mantis 1090: `undefineall

Hmm, the semantics of these command line switches is not clear to me. To
be unambiguous, the "undefinition" should happen at certain location
within the source files, since at different locations different macro
definition may be present. Are you suggesting that the semantics of
those switches will be just to ignore all the corresponding `define
directives, rather than to "undefine" them at certain location?

Disregarding the above, I'm not sure it will be appropriate to even
mention any specific command line switches in the LRM.

--Yulik.

-----Original Message-----
From: Jonathan Bradford;Freiburg [mailto:bradford@micronas.com] 
Sent: Thursday, August 24, 2006 10:52 AM
To: Feldman, Yulik
Cc: Bresticker, Shalom; sv-bc@server.eda-stds.org
Subject: Re: [sv-bc] Mantis 1090: `undefineall


On a similar note, allow for further 'tool specifc' command line 
switches in the style of
  -undefine <arg>
  -undefineall
that override `define etc. in the HDL.

The actual switch names are probably beyond the LRM, but the 
functionality can be  described.

A command line '-undefine <arg>' mechanism would be really useful to 
overcome hardwired
`define settings that influence `ifdef decisions in an HDL file.

   Regards

        Jonathan Bradford


Feldman, Yulik wrote:
>   
>
> Should the directive undefine all macros defined with `define only or
> also macros defined through the tool's command line switches (like
-D)?
> I understand that this may be beyond the LRM, but it may be quite
> important in practice. 
>
> Probably the directive should undefine only the `define macros,
because
> otherwise the directive won't be too useful (since once the command
line
> macros are undefined, there will be no way to define them again). In
> that case, it may be better to change the wording to refer to `define
> explicitly, to avoid ambiguity.
>
> --Yulik.
>
>  
>
> ________________________________
>
> From: owner-sv-bc@server.eda.org [mailto:owner-sv-bc@server.eda.org]
On
> Behalf Of Bresticker, Shalom
> Sent: Thursday, August 24, 2006 9:32 AM
> To: sv-bc@server.eda-stds.org
> Subject: [sv-bc] Mantis 1090: `undefineall
>
>  
>
> I added the following proposal to Mantis 1090:
>
> In 1800, 
>
> INSERT
>
> 23.5 `undefineall
>
> The `undefineall directive shall undefine all previously defined text
> macros. This directive takes no arguments and may appear anywhere.
>
> Shalom
>
> Shalom Bresticker
>
> Intel Jerusalem LAD DA
>
> +972 2 589-6852
>
> +972 54 721-1033
>
> I don't represent Intel 
>
>  
>
>
>   


-- 

Jonathan Bradford
CAD Engineer
Phone +49 (0)761 517 2884
Fax   +49 (0)761 517 2880
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