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

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Message-ID: <20070926110130.GA20950@uranus.ravnborg.org>
Date:	Wed, 26 Sep 2007 13:01:30 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Henry Nestler <Henry.Ne@...or.de>
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)

> >>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).

	Sam
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