Date: Fri, 27 Jun 2003 20:18:10 +0300
From: "Eli Zaretskii" <eliz AT elta DOT co DOT il>
Sender: halo1 AT zahav DOT net DOT il
To: djgpp AT delorie DOT com
Message-Id: <3405-Fri27Jun2003201809+0300-eliz@elta.co.il>
X-Mailer: emacs 21.3.50 (via feedmail 8 I) and Blat ver 1.8.9
In-reply-to: <bddsop$ro42n$1@ID-79865.news.dfncis.de> (alexvn@bigfoot.com)
Subject: Re: `mmap' undeclared
References:  <bddsop$ro42n$1 AT ID-79865 DOT news DOT dfncis DOT de>
Reply-To: djgpp AT delorie DOT com
Errors-To: nobody AT delorie DOT com
X-Mailing-List: djgpp AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com
Precedence: bulk

> From: "Alex Vinokur" <alexvn AT bigfoot DOT com>
> Newsgroups: comp.os.msdos.djgpp
> Date: Thu, 26 Jun 2003 07:28:05 +0300
> 
> zzz.cpp: In function `void read_file(char*)':
> zzz.cpp:17: `mmap' undeclared (first use this function)
> zzz.cpp:17: (Each undeclared identifier is reported only once for each function
>    it appears in.)
> zzz.cpp:20: `MAP_FAILED' undeclared (first use this function)
> zzz.cpp:23: `munmap' undeclared (first use this function)
> 
> --------- Compilation : END -----------
> 
> 
> Note. Cygwin/gcc has no problem with compilation of that code.
> ===========================================
> Windows 2000
> CYGWIN_NT-5.0 1.3.22(0.78/3/2)
> GNU gcc version 3.2 20020927 (prerelease)
> ===========================================
> 
> 
> What is wrong?

Nothing.  DJGPP simply doesn't support `mmap', and it cannot do so,
since the DPMI environment doesn't have a way to control where in the
address space do we get allocated memory blocks.

Cygwin doesn't work thru DPMI, so it doesn't have that limitation.