On Wed, Apr 18, 2012 at 8:03 AM, Michael Dickens
<address@hidden> wrote:
Yes: gcc 4.2.1. Apple is transitioning from pure gcc to using llvm / clang, so maybe they'll keep those more up to date? XCode 4.3.2 (latest) provides gcc 4.2.1 using llvm / clang (3.0), which is the latest release of those. llvm / clang 3.1 is coming out soon, it looks like; so, we'll see. In the mean time, I'm stuck with Apple's gcc 4.2.1 variant. So, I'm sure there's a way to make it work with what VOLK is trying to do; but, that's an SEP < http://en.wikipedia.org/wiki/Somebody_Else's_Problem > both since I don't have time right now and that it's a little beyond my current expertise in assembly language programming. Hopefully the VOLK-programmers-that-be can find a quick fix. - MLD
On Apr 18, 2012, at 9:40 AM, Philip Balister wrote:
> On 04/18/2012 09:28 AM, Michael Dickens wrote:
>> I just pulled the latest GIT master, cleaned out everything old, then the usual cmake. Make errors out with:
>>
>> [ 3%] Building C object volk/lib/CMakeFiles/volk.dir/volk_cpu.c.o
>> /var/tmp//ccrCnwC2.s:221:no such instruction: `xgetbv'
>>
>> I'm running OSX 10.6.8, XCode 3.2.3, gcc 4.2.1. - MLD
>
> gcc 4.2.1? Seriously?
Thanks for the update, that's good to know Apple's antediluvian assembler doesn't yet support AVX instructions. Actually, now that I look at it, looks like GCC didn't support AVX until 4.6.0. We'll put in a check disabling AVX if CMake doesn't find GCC 4.6. Unfortunately, there's no safe way to enable AVX instructions without using xgetbv.
--n