Date: Thu, 28 Nov 1996 10:56:40 GMT
From: kvhk AT ivs4 DOT barco DOT com (Koen Van Herck)
Message-Id: <9611281056.AA07279@ivs4.>
To: an118 AT chebucto DOT ns DOT ca
Cc: djgpp AT delorie DOT com
In-Reply-To: <57j1rb$p7p@News.Dal.Ca> (an118@chebucto.ns.ca)
Subject: Re: Need help with DJGPP's "_dos_ds" macro
Reply-To: Koen DOT VanHerck AT barco DOT com

> 
> 	I've read the stuff on selectors and "_dos_ds" in the DJGPP v.2 FAQ, 
> as well as the "far pointer" simulator functions that use it.
> 
> 	When I compile my test program, however, gcc gives my an error saying
> the "_dos_ds" function is undefined. I've included the library "farptr.h" and
> tried to compile a program with this line after having used Allegro to set
> my video mode to 13h:
> 
> 
> 		_farpokeb(_dos_ds, 0, 23);
> 
> 	It says the "_dos_ds" function isn't defined.

It's in go32.h, just say

#include <go32.h>
#include <sys/farptr.h>

> 
> 	Also, the compiler won't let me link to the "farptr.h" library by
> putting "-lfarptr" switch on. It says it can't find the file "-lfarptr".
> It does this with other libraries I try to link this way too. But it will 
> let me link to "iostream.h" by putting a "-liostream" on the end of my 
> command line. Why does it do this, and not recognize the "_dos_ds" even
> though I've included "farptr.h" in my code ?
> 
> 						Thanks very much
> 							Graham
> 
You should not link farptr. It is inluded in the standard libc library.


----
Koen Van Herck
Electronic Design Engineer
E-mail: Koen DOT VanHerck AT barco DOT com

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