Date:	Sun, 2 May 1999 12:33:27 +0300 (IDT)
From:	Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
X-Sender:	eliz AT is
To:	Alexander_Pankov <billy AT dkd DOT ot DOT lt>
cc:	djgpp AT delorie DOT com
Subject:	Re: Re[2]: compiling
In-Reply-To:	<12552.990502@dkd.ot.lt>
Message-ID:	<Pine.SUN.3.91.990502122828.563m-100000@is>
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Reply-To:	djgpp AT delorie DOT com
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On Sun, 2 May 1999, Alexander_Pankov wrote:

> For example, I compile such small program and get... 61Kb!!! WHY???

See section 8.13 of the DJGPP FAQ list.

> I need VERY-VERY small com-file, for "32-DOS".

Think about it: how can a program that switches the CPU to protected mode 
and then calls DOS services from a protected-mode code be small?  All the 
code that does this trick needs to be there, or else the program won't 
work.

The minimal DJGPP program is 28KB; see the FAQ about how to make such 
programs.

I still think that the size is not what you need, but you don't explain 
what do you need, so I cannot help you.

> Compiling *.o file, for
> example, I get less than 500 bytes! How to link this small file???

Well, simply use the *.o file, and you have your small file.

> And where can I get description of *.o files???

The binary format is described in the Binutils docs (get v2gnu/bnuNNs.zip 
and read there).

> I heard that DJGPP supports user-defined calls. For example, Delphi
> sends some parameters through registers EAX, ECX, EDX. How can I
> define my own calls?

This is described in the GCC docs, look for the section that describes 
function attributes and read there.

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