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Re: [Discuss-gnuradio] GRAS build error on armv7


From: Josh Blum
Subject: Re: [Discuss-gnuradio] GRAS build error on armv7
Date: Fri, 26 Jul 2013 15:29:19 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130623 Thunderbird/17.0.7


On 07/26/2013 07:57 AM, Manoj Gudi wrote:
> We've been successful in building dependencies for gnuradio on armv7
> platform, however while building GRAS, we got this error:
> 

This line is probably the culprit.
https://github.com/captaintrash/theron/blob/master/Include/Theron/Detail/Threading/Utils.h#L163

The thread pools can operate on condition variables or spin locks. For
the spin lock implementation, there is a "pause" instruction --
obviously not applicable on arm. I think you can simply comment this out
to get things rolling.

Supposing this is the issue. What is the recommended fix... just a
simple #ifdef __X86_64__ around this line?

-josh

> *Scanning dependencies of target gras
> [ 13%] Building CXX object
> lib/CMakeFiles/gras.dir/__/Theron/Theron/Receiver.cpp.o
> [ 13%] Generating GrExtras_Ops.pyc
> [ 13%] Generating GrExtras_Ops.pyo
> make[2]: warning:  Clock skew detected.  Your build may be incomplete.
> [ 13%] Built target pygen_python_grextras_da046
> [ 13%] Swig source
> /tmp/ccONtg2w.s: Assembler messages:
> /tmp/ccONtg2w.s:3234: Error: bad instruction `pause'
> /tmp/ccONtg2w.s:3243: Error: bad instruction `pause'
> /tmp/ccONtg2w.s:3266: Error: bad instruction `pause'
> /tmp/ccONtg2w.s:3275: Error: bad instruction `pause'
> /tmp/ccONtg2w.s:3406: Error: bad instruction `pause'
> /tmp/ccONtg2w.s:3415: Error: bad instruction `pause'
> /tmp/ccONtg2w.s:4479: Error: bad instruction `pause'
> /tmp/ccONtg2w.s:4488: Error: bad instruction `pause'
> /tmp/ccONtg2w.s:4511: Error: bad instruction `pause'
> /tmp/ccONtg2w.s:4520: Error: bad instruction `pause'
> /tmp/ccONtg2w.s:4540: Error: bad instruction `pause'
> /tmp/ccONtg2w.s:4549: Error: bad instruction `pause'
> /tmp/ccONtg2w.s:4677: Error: bad instruction `pause'
> /tmp/ccONtg2w.s:4686: Error: bad instruction `pause'
> /tmp/ccONtg2w.s:4735: Error: bad instruction `pause'
> /tmp/ccONtg2w.s:4744: Error: bad instruction `pause'
> /tmp/ccONtg2w.s:4816: Error: bad instruction `pause'
> /tmp/ccONtg2w.s:4825: Error: bad instruction `pause'
> make[2]: Warning: File `/usr/include/python2.7/Python.h' has modification
> time 4.1e+08 s in the future
> [ 13%] Building CXX object
> PMC/python/PMC/CMakeFiles/_PMCBool.dir/PMCBoolPYTHON_wrap.cxx.o
> /home/aakash/gras/build/PMC/python/PMC/PMCBoolPYTHON_wrap.cxx: In function
> 'void SWIG_InitializeModule(void*)':
> /home/aakash/gras/build/PMC/python/PMC/PMCBoolPYTHON_wrap.cxx:3433:21:
> warning: statement has no effect [-Wunused-value]
> *
> 
> In my opinion this is an assembler issue for armV7, but I've got no leads
> on how to solve this. Will mapping this instruction with an equivalent
> assembly instruction for armV7 work?
> 
> Here's /proc/cpuinfo
> *$ cat /proc/cpuinfo
> Processor       : ARMv7 Processor rev 2 (v7l)
> BogoMIPS        : 1001.88
> Features        : swp half thumb fastmult vfp edsp neon vfpv3
> CPU implementer : 0x41
> CPU architecture: 7
> CPU variant     : 0x3
> CPU part        : 0xc08
> CPU revision    : 2
> 
> Hardware        : sun5i
> Revision        : 0000
> Serial          : 0000000000000000
> *
> OS version: Linaro image 13.06
> Kernel: linux-sunxi 3.0.62+
> 



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