On 01/24/2013 07:37 AM, Michael Dickens wrote:
[New subject line]
Albert sent me the build log for:
{{{
sudo port install gnuradio +full configure.compiler=macports-gcc-4.7
}}}
and I can replicate the error on my computer; so, this must be a GCC 4.7 (or,
MacPorts's GCC 4.7) issue. The error is:
{{{
build/volk/lib/volk_cpu.c:54:no such instruction: `xgetbv'
}}}
VOLK folks: what other info do you need from me/us to address this issue? - MLD
This is a compiler problem. xgetbv was added to vanilla GCC in 4.4.
Apparently MacPorts' mutant GCC hasn't added it as of 4.7. The relevant
check is line 128 of volk/lib/CMakeLists.txt. We could just disable AVX
support on GCC < 4.7, but since 4.7 is basically the latest GCC out
there it seems a little aggressive to disable AVX for everyone. I'd
rather disable AVX on Mac. I haven't done Mac-specific platform
detection in CMake; can anyone else suggest a Mac test to use here to
disable AVX on Mac?
--n
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