On 04/18/2012 09:24 AM, Josh Blum wrote: > > > On 04/18/2012 09:23 AM, Nick Foster wrote: >> On Wed, Apr 18, 2012 at 8:03 AM, Michael Dickens <[email protected]> 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. >> > > Maybe the xgetbv stuff still needs and ifdef __AVX__ around it > > __AVX__ is only defined when the -mavx is passed >
I take it back, we dont pass arch flags to volk_cpu.c We can manually define something from the build system when -mavx passes, or a compile time test, or maybe there is another gcc define. -josh _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
