Re: [Discuss-gnuradio] Problems building GNURadio

[Tom Tsou]

On Mon, Sep 22, 2014 at 4:08 PM, Philip Balister <address@hidden> wrote:
> On 09/22/2014 02:13 PM, Tom Tsou wrote:
>> cmake ../ -DCMAKE_C_FLAGS="-march=armv7-a -mthumb-interwork
>> -mfloat-abi=hard -mfpu=neon-vfpv4 -mtune=cortex-a15"
>> -DCMAKE_ASM_FLAGS="-march=armv7-a -mthumb-interwork -mfloat-abi=hard
>> -mfpu=neon-vfpv4 -mtune=cortex-a15"
>>
>
> We should add the ASM fags to the toolchain files.

For native build, the missing piece is architecture detection. Until
that works sufficiently well, some type of setting(s) will need to
feed in manually.

Alternatively, the default gcc target could be setup with reasonable
values. The arndale-linaro image can also compile gnuradio without any
command line switches since the gcc defaults are sane.

--with-arch=armv7-a --with-fpu=vfpv3-d16 --with-float=hard

Not so with the OE based distros.

>> In this case, the native gnuradio build in tmpfs took a very
>> reasonable, IMO, 42 min 31 sec.
>
> Reasonable for a patient man :)

And power efficient too!

  -TT