Date: Sat, 9 Sep 1995 21:14:30 -0400
From: dj (DJ Delorie)
To: shaw AT cix DOT compulink DOT co DOT uk
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Re: Can't find 'brk' in v2b3


> I have just downloaded V2beta3. All seems fine except that one of my
> programs won't link: undefined reference to ' brk'. Linked ok under
> v1. Anyone have any suggestions as to what's wrong, please?

I added it back in.  Just do "#define brk __brk" and it should work
fine for now.

Background: brk is neither posix nor ansi, so the name must be in the
reserved namespace, since it's used in crt0.o.  V2 has <libc/stubs.h>
which defines functions that are in the reserved space, but often used
in the user space (like brk() -> __brk()).  This causes libc to
include stub definitions for them, like this (but as a single
assembler `jmp' opcode):

	brk(x)
	{
	  return __brk(x);
	}

brk was missing from <libc/stubs.h>, so libc built OK but applications
would have problems.  I added the line to <libc/stubs.h>.

DJ