From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Wed, 12 Jul 2000 17:44:55 -0400
From: Latchesar Ionkov <lucho@gmx.net>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] Silly porting fun
Message-ID: <20000712174455.A20431@gmx.net>
References: <20000712141620.A1017@cyber-dyne.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
In-Reply-To: <20000712141620.A1017@cyber-dyne.com>
Topicbox-Message-UUID: d91cb560-eac8-11e9-9e20-41e7f4b1d025

On Wed, Jul 12, 2000 at 02:16:20PM -0700, Randolph Fritz said:
> 
> The typical minimal main program from a GNU configure script is:
> 
>   main() { return(0); }
> 
> The compiler, reasonably enough, decides that this routine never does
> anything and is never called, and optimizes it out of existence!  The
> linker then cannot find main(), and fails.  Is there an option switch
> (preferably) or #pragma I can give to alter this behavior?  Failing
> that, would adding "USED(main);" to the program do the trick?

Compiler cannot decide whether a (global) function is used or not -- that's 
linker job.

Anyway, if you add

        #include "u.h"
	#include "libc.h"
		
in your minimal program it will compile and link just fine.
		
Regards,

	Lucho