Re: [Discuss-gnuradio] Volk library invalid opcode exception

[Tom Rondeau]

On Sun, Apr 15, 2012 at 10:50 AM, Joanna Rutkowska
<address@hidden> wrote:
> On 04/15/12 16:46, Tom Rondeau wrote:
>> Unfortunately, that doesn't narrow things down. How about running
>> volk_profile under gdb? Let's see if we can find the instruction it's
>> puking on.
>>
>> I find it odd that in your original post, it looks like volk_profile
>> is running avx_64, but your proc/cpuinfo doesn't show that the
>> processor has AVX. This shouldn't matter in this case since the
>> deinterleave kernel doesn't have AVX, but I think something is still
>> getting confused, probably through Xen.
>
> This is what gdb spits out (without debug symbols):
>
> Program received signal SIGILL, Illegal instruction.
> 0x00007ffff7b4cd40 in volk_16ic_s32f_deinterleave_real_32f_a_sse4_1 ()
> from /rw/home/user/gnuradio/gnuradio/volk/build/lib/libvolk.so.0.0.0
> Missing separate debuginfos, use: debuginfo-install
> boost-test-1.46.0-3.fc15.x86_64 glibc-2.14.1-6.x86_64
> libgcc-4.6.3-2.fc15.x86_64 libstdc++-4.6.3-2.fc15.x86_64
> orc-0.4.16-5.fc15.x86_64
>
> What's the recommended way to build volk with debug symbols using cmake?
> Sorry, I don't have much experience with cmake...
>
> joanna.

You pass the -DCMAKE_BUILD_TYPE="Debug" to cmake when configuring.
That sets the -g flag when building to get us the symbols out.

Tom