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SubjectRe: [PATCH] Allow compiling i386 with an x86-64 compiler
Tom Rini wrote:
> On Wed, Nov 24, 2004 at 08:22:05AM -0800, H. Peter Anvin wrote:
>
>
>>This patch adds -m32 if gcc supports it, thus making it easier to
>>compile the i386 architecture with an x86-64 compiler.
>>
>>Note that it adds the option to CC, since it also affects assembly code
>>and linking. The extra level of indirection is because $(call
>>cc-option) itself uses $(CC), so just doing CC += ... would cause $(CC)
>>to be recursively defined.
>
>
> Just so 'bi-arch' arches look the same, I'd like to suggest (and stolen
> from ppc32) something like:
> HAS_BIARCH := $(call cc-option-yn, -m32)
> ifeq ($(HAS_BIARCH),y)
> CC := $(CC) -m32
> endif
>
> Up near the top...
>

I'm not really happy with it, because it's misleading; it implies it
tests for a working x86-64 devel environment, which it doesn't. It's
not a strong opinion, though.

-hpa

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