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Date:	Tue, 18 Feb 2014 22:48:01 +0100
From:	Sam Ravnborg <>
To:	Alan Modra <>
	Andi Kleen <>,,
	Cary Coutant <>,
	Stephen Rothwell <>
Subject: Re: [RFC] kbuild: drop use of "ld -r" for intermediate links of

On Wed, Feb 19, 2014 at 01:28:56AM +1030, Alan Modra wrote:
> On Sun, Feb 16, 2014 at 09:37:24PM +0100, Sam Ravnborg wrote:
> > The trick used is that for each directory a linker script is
> > generated that name all the file to be linked - and for
> > sub-directories this is just the linker script for that directory.
> > 
> > The file continue to be named "built-in.o" but it is really a linker script.
> You'll need binutils newer than 2012-06-25
> > I recall the idea is from someone else - but have long lost memory of
> > from where I saw it.
> I think it might have been my idea originally, implemented by Stephen
> Rothwell.
Sounds right - added in cc:

> Another possibility is to use thin archives to package up the objects.
> Thin archives are like normal archives except they just contain paths
> to the objects, not the object contents.  Paths are flattened when
> adding one thin archive to another.  I think Stephen may have tried
> that idea too.
I just coded this in a similar simple fashion.
It broke building vdso - needs to look into that and will get back when I may
understand why my link suddenly broke.

Thanks for the feedback!

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