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Article #3573

Re: #ifndef/#ifdef problems in my header file (conditional header inclusion)

#3573
From: Chao-Kuang Yang
Date: Tue, 24 Dec 1996 00:00
56 lines
3020 bytes
Hi!
	Have you ever try to put your header in MacHeader file or in pre-compiled
headers?  That might just do what you intend to do.

Mark Yang
-- 
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Mauricio Tavares <raub@kushana.aero.ufl.edu> wrote in article
<raub-2412960039190001@dialup52.afn.org>...
>         I am finding some very interesting behavior from #define and
> #ifndef/#ifdef.  Let's say that I have a header file called MyHeader.h. 
This
> file is included by all my routines (they usually are in separate files).
 Now
> that would not be very nice since it would include the very same include
files
> (stdio.h and others) over and over again.  So, I thought if I use
something
> like
> 
> #ifndef MOOSE
> #define MOOSE
> #include <stdio.h>
> #include <X11/Xlib.h>
> #endif
> 
> the code would only include *one* copy of these two include files.  What
I am
> finding out is that is not the case.  Running C programs that have
similar 
> conditional including of header files in gcc (Sparc), Think C (Mac),
Borland
> TC++ 3.1 for Windows (PC), and SAS/C (Amiga) results in the same thing. 
It
> really seems that the compiler simply *forgets* what was defined in the
> previous .c file and define them all over again.  As a result, my object
files
> become unnecessarily large.  Yes, the executable seems to take care of
that,
> but still I am using more disk space than I should.  I am open for
suggestions
> as usual.
> 
> -- 
>  ===========================+=======================================
> | Mauricio Tavares          | "We will attack...                    |
> | raub@kushana.aero.ufl.edu |  ...under the cover of daylight!"     |
> |                           |                                Rimmer |
>  ===========================+=======================================
> 
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From: "Chao-Kuang Yang" <ckyang@earthlink.net>
Subject: Re: #ifndef/#ifdef problems in my header file (conditional header inclusion)
Date: 1996/12/24
Message-ID: <01bbf184$88049780$4d4b2299@pentium90>
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