linux-kernel - Re: kbuild: LDFLAGS_MODULE unusable for external module builds (2.6.23-rc2)

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Message-ID: <46FA4313.1060201@Arcor.de>
Date:	Wed, 26 Sep 2007 13:31:31 +0200
From:	Henry Nestler <Henry.Ne@...or.de>
To:	Sam Ravnborg <sam@...nborg.org>
CC:	linux-kernel@...r.kernel.org, Roland McGrath <roland@...hat.com>
Subject: Re: kbuild: LDFLAGS_MODULE unusable for external module builds (2.6.23-rc2)

Hello Sam,

Sam Ravnborg wrote:
>>>> What macro should set for linker parameters of foo.o ? I'm not shure.
>>> Have you read:
>>> Documentation/kbuild/makfilefiles.txt?
>> Yes. This was a *very* helpfull. And many examples spokes about 
>> LDFLAGS_$@ there. Not directly described for modules.
> 
> Took a deeper look.
> I saw one reference to LDFLAGS_$@ that is wrong:
>     LDFLAGS             Generic $(LD) options
> 
>         Flags used for all invocations of the linker.
>         Often specifying the emulation is sufficient.
> 
>         Example:
>                 #arch/s390/Makefile
>                 LDFLAGS         := -m elf_s390
>         Note: EXTRA_LDFLAGS and LDFLAGS_$@ can be used to further customise
>         the flags used. See chapter 7.
> 
> The chapter reference is also bad...
> The other references to the LDFLAGS_$@ are in other situations - it is
> used in several places.
> 
> If your example requires the LDFALGS_$@ I wil introduce it - for now
> it has not been required (except for vdso support where it was hacked).

I will check EXTRA_LDFLAGS compatibilities with older kernel versions. 
Than I come back with results. Currently I no need LDFLAGS_$@.

-- 
Henry

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