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Re: PATCH: Add x32 support to config.guess

From: H.J. Lu
Subject: Re: PATCH: Add x32 support to config.guess
Date: Sat, 18 Aug 2012 11:01:57 -0700

On Sat, Aug 18, 2012 at 10:40 AM, Mike Frysinger <address@hidden> wrote:
> On Saturday 18 August 2012 13:32:59 Mike Stump wrote:
>> On Aug 18, 2012, at 6:52 AM, "H.J. Lu" <address@hidden> wrote:
>> > In case of x32, the only difference between x32 and x86-64 is
>> > the default output of CC.  What do you recommend how to
>> > detect x32?
>> So, is there a cpp symbol that is defined for code-gen?  If so, something
>> like
>>   If [ $(gcc -x c /dev/null -dM -E | grep x32) = x32 ]; then fi
>> Would do it.
> how is executing `gcc` any better than $CC_FOR_BUILD ?
> your code suggestion here is pretty much what H.J. Lu is already doing.
> -mike

There are 12 existing set_cc_for_build usages in config.guess.
I don't think it is reasonable to require x32 not to use it without
providing an alternative.  If you want to remove set_cc_for_build,
one extra usage doesn't make it much harder to do.


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