#Include Question

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

superchief - 06 May 2005 14:08 GMT

I have a simple vc++ win32 program. I have one header that has a list of all
the other header files in it. In each of the .cpp files i make a referance to
this main header. is there a way of getting around this, so i only have to
make one header (listing all the includes i ever would like in the program)
and then reference this once in one main file somewhere?

I am a bit new to the c++ compiler so this doesn't appear to be obvious to me.

Thanks for your help

Reply to this Message

Jürgen Devlieghere - 06 May 2005 15:06 GMT

Well, I don't think there is a way to avoid including your
'superchief-include-file', since the compiler must get it's definitions
somewhere.

On the other hand, putting all possible includes is not very nice, certainly
not in bigger projects: 1 change in some include file makes a full
recompilation necessary, since the compiler can no longer see the
dependencies.

Jürgen Devlieghere

>I have a simple vc++ win32 program. I have one header that has a list of
>all
[quoted text clipped - 9 lines]
>
> Thanks for your help

Reply to this Message

Jochen Kalmbach [MVP] - 06 May 2005 15:47 GMT

Hi Jürgen!

> On the other hand, putting all possible includes is not very nice, certainly
> not in bigger projects: 1 change in some include file makes a full
> recompilation necessary, since the compiler can no longer see the
> dependencies.

But it is a very good aproch if your use precompiled headers. Then you
normally only need *one* include file (stdafx.h; which contains
everything you need) and the compile-time is very fast...

Signature

Greetings
Jochen

My blog about Win32 and .NET
http://blog.kalmbachnet.de/

Reply to this Message

John Gabriel - 06 May 2005 16:34 GMT

Yes. I think you can do this easily - Just use a preprocessor directive so
that the include files are processed only once, i.e

#ifndef ALL_INCLUDED
#include "h1.h"
#include "h2.h"
#define ALL_INCLUDED
#endif

Or maybe I misunderstood your question?

> I have a simple vc++ win32 program. I have one header that has a list of all
> the other header files in it. In each of the .cpp files i make a referance to
[quoted text clipped - 5 lines]
>
> Thanks for your help

Reply to this Message

superchief - 07 May 2005 19:24 GMT

I will try this method and see if it works, thanks.

Also thanks to Jurgen and Jochen for their help

> Yes. I think you can do this easily - Just use a preprocessor directive so
> that the include files are processed only once, i.e
[quoted text clipped - 16 lines]
> >
> > Thanks for your help

Reply to this Message

#Include Question

Free Magazines