Re: [Discuss-gnuradio] make test passes, but Linux kernel log says "undefined instruction"

[Monahan-Mitchell, Tim]

> Gnu Radio v3.6.4.2 on ARM target.

> make test : 100% pass.

> But this happens each time python does "from gnuradio import gr_unittest":
> <6>[  390.919792] python (1771): undefined instruction: pc=42a9c328 <6>[  
> 390.919822] Code: 00000000 00000000 f26ee1fe e12fff1e (ee190f1d)

> For example, when qa_add_and_friends is started.

> This just showed up when switched from Ubuntu 12.04 LTS to 13.04, and 
> installed new versions of g++, libboost, etc... I went back and checked my 
> older 12.04 environment which does not exhibit this. My cmake configuration 
> was the same (except I took out -DENABLE_BAD_BOOST, as I now have Boost 1.53).

> Some version changes:
> g++ : 4.6.3-1ubuntu5  to 4.7.3-1ubuntu1
> python: 2.7.3 to 2.7.4
> swig: 2.0.4 to 2.0.8

> If I had not looked at the kernel log, I would not have noticed.
> I'll see if I can narrow this down. But any experience appreciated.

An update on this.

I see the above log several times during a fresh build of gnuradio, during 
"cmake ../", and it starts right around this point in the cmake output:

-- Looking for C++ include sys/resource.h - found
--
-- Python checking for python >= 2.5
-- Python checking for python >= 2.5 - found

So at least this eliminates the collection of compiler flags I have on the 
cmake command line I actually am using.