winebuild: Add configure option to use llvm-mc as assembler.

[Per Johansson]

On Tue, Jan 1, 2013 at 7:11 PM, Per Johansson <per at morth.org> wrote:
> On Tue, Jan 1, 2013 at 6:00 PM, Charles Davis <cdavis5x at gmail.com> wrote:
>>
>> The right thing IMO is to test if we're compiling with Clang. If we are, then we should test if Clang is using its integrated assembler; if it is, then we should invoke Clang instead of the system assembler to assemble. This way, the user doesn't have to pass yet another option to configure in case he's using Clang.
>>
>> I have a patch to hack-fix winebuild to invoke Clang if we're being compiled by Clang; I can fix it to test for Clang and Clang's integrated assembler in configure and send it to the list--something I really should've done a while ago.
>
> Sure, sounds like a better plan. I tried briefly to use clang, but
> there were a lot of undefined symbol errors I wasn't sure how to fix.
> Tell me if you want some help with the patch.
>

Btw, I should probably add that there's currently no way to build
unpatched wine on 10.8 (and probably 10.7), as gcc-apple-4.2 get a
conflict about cpu_type_t and pure gcc is not up to date with the
latest Objective-C syntax in the system headers. Being able to build
with clang would help a lot.

Regards,
-- 
Per Johansson