From: Robert Hoehne <Robert DOT Hoehne AT Mathematik DOT tu-chemnitz DOT de>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Simple Query on multiple sources
Date: Mon, 21 Apr 1997 16:37:54 +0200
Organization: TU Chemnitz-Zwickau
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References: <861628816 DOT 14833 DOT 0 AT itsb DOT demon DOT co DOT uk>
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BDC Client Team wrote:
> 
> Can anyone help me with mulitple sources?
> 
> I understand about compiling different sources to .o files and then
> linking the .o's to a .exe, but I am unsure about #includes.
> 
> When you have (for example) two sources foo.c and bar.c and you wish to
> use the allegro library, I assume that you would only need to
> #include "allegro.h" in the source that has the main() procedure and that
> you could call allegro routines from within the other one?

Where  you include the "allegro.h" has nothing to do
with the main() function.
A header file like "allegro.h" is used to get the prototypes
of a function, which you want to call from you source file or
to get some data structures.

That means, you have to include that file in any source file,
where you want to use any function or type from (for instance)
the allegro library.

And do not forget, when you link your exe, to link in it also
the library liballeg.a, which has the real functions in it.

Robert
-- 
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* Robert Hoehne, Fakultaet fuer Mathematik, TU-Chemnitz-Zwickau *
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* e-Mail:  Robert DOT Hoehne AT Mathematik DOT TU-Chemnitz DOT DE              *
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