Re: [PATCH] ppc: fix build with O=$(output_dir)

[Tom Rini]

On Mon, Oct 18, 2004 at 11:48:22PM -0700, Roland Dreier wrote:

> Recent changes to arch/ppc/boot/lib/Makefile cause
> 
>       CC      arch/ppc/boot/lib/../../../../lib/zlib_inflate/infblock.o
>     Assembler messages:
>     FATAL: can't create arch/ppc/boot/lib/../../../../lib/zlib_inflate/infblock.o: No such file or directory
> 
> when building a ppc kernel using O=$(output_dir) with CONFIG_ZLIB_INFLATE=n,
> because the $(output_dir)/lib/zlib_inflate directory doesn't get created.
> 
> This patch, which makes arch/ppc/boot/lib/Makefile create the
> directory if needed, is one fix for the problem.

IMHO, this is the uglier of the two fixes for the problem, as this means
you'll still be clobbering lib/zlib_inflate/*.o when ZLIB_INFLATE!=n.
The other is to go back to putting the object in $(O)/arch/ppc/boot/lib/
and copying the guts of the .c.o rule to arch/ppc/boot/lib/Makefile

Sam, any chance you've had time to think up a good fix to this?  Thanks.

-- 
Tom Rini
http://gate.crashing.org/~trini/
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