Re: [Discuss-gnuradio] using fftw for neon with gnuradio

[Philip Balister]

On 06/29/2011 08:51 PM, Morgan Redfield wrote:
> I don't think you have to change the parameters you're giving to
> ./configure for gnuradio. You actually want to change the parameters
> used by ./configure for fftw.
>
> This worked for me:
> ./configure --enable-single --enable-neon --enable-shared
> CFLAGS='-fPIC -mcpu=cortex-a8 -mfpu=neon -mfloat-abi=softfp -O2'
>
> And then I built gnuradio as normal.

Make sure you remove the installed fftw libraries and headers.

Something like:

opkg list-installed | grep fftw

opkg remove fftwf fftwf-dev (where the package names match the result 
from the first command)

You will need to add the appropriate fore removal option to opkg,

Philip

> Morgan
>
> On Wed, Jun 29, 2011 at 2:46 AM, Phelps Williams<address@hidden>  wrote:
> > Could somebody post the whole configure call once the vesperix fftw lib was
> > installed?
> > I'm giving this a try here myself but want to make sure I'm on the right
> > track.
> > ./configure --disable-volk --disable-usrp2 --disable-usrp1
> > --disable-gr-video-sdl --enable-shared CFLAGS="-march=armv7-a
> > -mtune=cortex-a8 -mfpu=neon -mfloat-abi=softfp -O3 -fPIC"
> > CXXFLAGS="-march=armv7-a -mtune=cortex-a8 -mfpu=neon -mfloat-abi=softfp
> > -O3 -fPIC" -with-qwt-incdir=/usr/include
> > On Wed, Jun 22, 2011 at 5:26 PM, Thomas Tsou<address@hidden>  wrote:
> > > On Wed, Jun 22, 2011 at 2:13 PM, Philip Balister<address@hidden>
> > > wrote:
> > > > Did you rerun configure adding -fPIC to CFLAGS? I ddi get the library to
> > > > build as a shared library.
> > >
> > > That worked for me.
> > >
> > >   Thomas
> > >
> > > _______________________________________________
> > > Discuss-gnuradio mailing list
> > > address@hidden
> > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio