From: Hollis Blanchard <hollisb@us.ibm.com>
To: Sam Ravnborg <sam@ravnborg.org>
Subject: using cc-option in arch/ppc64/boot/Makefile
Date: Thu, 14 Oct 2004 16:11:32 +0000
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Hi Sam, I would like to use "cc-option-yn" in arch/ppc64/boot/Makefile.

All recent 64-bit gcc/binutils can produce 32-bit code by passing -m32 (or 
similar) to them. arch/ppc64/boot/zImage is actually a 32-bit executable, and 
the Makefile still requires a separate 32-bit cross-compiler to build it (in 
addition to the 64-bit cross-compiler used for the vmlinux). To decide if 
$(CC) can handle -m32, I'd like to use cc-option-yn (as in 
arch/ppc64/Makefile).

I've tried moving the cc-option stuff out of the top-level Makefile into 
something that can be included from arch/ppc64/boot/Makefile, but so far the 
right magic has escaped me. Any ideas?

-- 
Hollis Blanchard
IBM Linux Technology Center
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