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List:       gnuradio-discuss
Subject:    Re: [Discuss-gnuradio] volk compile error on raspberry pi3
From:       Cinaed Simson <cinaed.simson () gmail ! com>
Date:       2017-02-22 0:57:06
Message-ID: 96471fc2-7c62-babf-b926-da5eb3f88344 () GMail ! COM
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Hi Michael - it worked. Thanks!

I upgraded Raspbian Jessie to Debian Jessie and was able to install
gnuradio 3.7.10.1 from source.

The CFLAGS at that URL are for pi2 - for the pi3 I used

  CFLAGS="-march=armv8-a -mtune=cortex-a53 -mfloat-abi=hard
-mfpu=neon-vfpv4 -O2"

but

  CFLAGS="-march=armv8-a -mtune=cortex-a53"

will work too - as well as not setting CFLAGS.

-- Cinaed


On 02/20/2017 02:01 PM, Michael Dickens wrote:
> Hi Cinaed - Check out < https://brmlab.cz/user/jenda/rpi-gcc >. - MLD
> 
> On Mon, Feb 20, 2017, at 03:36 PM, Cinaed Simson wrote:
> > Any know if the following bug has been resolved?
> > 
> > It appears this bug has existed since the first pi was released.
> > 
> > Anyone know if a patch exists?
> > 
> > I did install version 3.7.4 supported by the Raspbian OS but I'm running
> > the latest firmware on my devices it causes them to stutter - stop and
> > go - causing under flows and over flows.
> > 
> > The devices work perfectly outside of gnuradio 3.7.4.
> > 
> > Rumor has it the pi's don't support sbfx.
> > 
> > Error:
> > 
> > /opt/gnuradio/src/gnuradio-3.7.10.1/volk/kernels/volk/asm/neon/volk_32f_x2_dot_prod_32f_neonasm_opts.s:46:
> >                 
> > Error: selected processor does not support ARM mode `sbfx r11,r1,#2,#1'
> > 
> > gcc (Raspbian 4.9.2-10) 4.9.2
> > g++ (Raspbian 4.9.2-10) 4.9.2
> > GNU assembler (GNU Binutils for Raspbian) 2.25
> 


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