#ifdef tool?

[David Korn]

>-----Original Message-----
>From: Joel Coltoff [ mailto:joel@wmi.com ]
>Sent: 25 July 2001 13:35

>On Tue, 24 Jul 2001, Michael Dorin wrote:
>
>>
>>
>> Anybody know of a tool that could strip unused ifdefs right 
>from your code?
>>
>
>As has been suggested you could use gcc -E. [snip]

  The preprocessor isn't as useful as all that, it will also process all
the ifdefs you want left in, replace all your carefully #defined macros
with the obscure magic numbers you invented them to replace, bodily 
insert the contents of all the header files at the site of the #include,
scatter the whole thing with #line directives that would make it hard to
figure out the actual line in the preprocessed file where a reported error
was actually placed, etc. etc etc!  Basically it's no use for this kind
of job. 

  Fortunately Pat has come up with a better answer for you while I was busy
typing this reply!

        DaveK
-- 
"Computer games don't affect kids; I mean if Pac-Man affected us as kids,
we'd all be running around in darkened rooms, munching magic pills and
listening to repetitive electronic music."
    - Kristian Wilson, Nintendo, Inc, 1989.


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