Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id <S277112AbRJLAXk>; Thu, 11 Oct 2001 20:23:40 -0400
Received: (majordomo@vger.kernel.org) by vger.kernel.org
	id <S277123AbRJLAXa>; Thu, 11 Oct 2001 20:23:30 -0400
Received: from cpe-24-221-152-185.az.sprintbbd.net ([24.221.152.185]:9391 "EHLO
	opus.bloom.county") by vger.kernel.org with ESMTP
	id <S277112AbRJLAXT>; Thu, 11 Oct 2001 20:23:19 -0400
Date: Thu, 11 Oct 2001 17:23:33 -0700
From: Tom Rini <trini@kernel.crashing.org>
To: Keith Owens <kaos@ocs.com.au>
Cc: kbuild-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org
Subject: Re: Export objs from an external Makefile?
Message-ID: <20011011172333.F21564@cpe-24-221-152-185.az.sprintbbd.net>
In-Reply-To: <20011011165734.C21564@cpe-24-221-152-185.az.sprintbbd.net> <32699.1002845678@ocs3.intra.ocs.com.au>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <32699.1002845678@ocs3.intra.ocs.com.au>
User-Agent: Mutt/1.3.22i
Sender: linux-kernel-owner@vger.kernel.org
X-Mailing-List: linux-kernel@vger.kernel.org

On Fri, Oct 12, 2001 at 10:14:38AM +1000, Keith Owens wrote:
> On Thu, 11 Oct 2001 16:57:34 -0700, 
> Tom Rini <trini@kernel.crashing.org> wrote:
> >On Fri, Oct 12, 2001 at 09:42:05AM +1000, Keith Owens wrote:
> >> On Thu, 11 Oct 2001 09:35:32 -0700, 
> >> Tom Rini <trini@kernel.crashing.org> wrote:
> >> >Hey all.  How do you do the 'export-objs' bits in a kernel module that's
> >> >outside of the kernel?  Thanks..
> >> 
> >> Compile with -DMODULE -DEXPORT_SYMTAB.  If the kernel has modversions,
> >> add -DMODVERSIONS -include $(HPATH)/linux/modversions.h.  The safest
> >> way is to compile a module in the kernel that exports the objects then
> >> copy the command, substituting the file names.
> >
> >I think I managed to get things right.  I added -DEXPORT_SYMTAB to the
> >default flags and added:
> >CFLAGS_EXTRA	+= $(shell if [ -f $(KERNEL_HEADERS)/linux/modversions.h ]; \
> >			then echo -include \
> >			$(KERNEL_HEADERS)/linux/modversions.h; fi)
> 
> You need -DMODVERSIONS as well.

D'oh...

> Testing for the presence of modversions.h will not work in kbuild 2.5,
> that file is always created with error messages to catch people who
> include it "by hand".  OTOH, kbuild 2.5 has support for compiling
> outside the standard kernel tree so who cares :)?

Right.  I'm sure some changes will have to be made for external modules
once 2.5 is underway...

-- 
Tom Rini (TR1265)
http://gate.crashing.org/~trini/
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/