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Re: [Discuss-gnuradio] Frustrating


From: Eric Blossom
Subject: Re: [Discuss-gnuradio] Frustrating
Date: Wed, 10 Aug 2005 19:44:58 -0700
User-agent: Mutt/1.5.6i

On Thu, Aug 11, 2005 at 01:52:03PM +1200, Moir, Tom wrote:
> I am getting to the stage where I am compiling the core and get teh following 
> error messages
> 
> 
> ../../src/lib/.libs/libgnuradio-core.so: undefined reference to 
> `fftwf_import_wisdom_from_f ile'
> ../../src/lib/.libs/libgnuradio-core.so: undefined reference to `fftwf_free'
> ../../src/lib/.libs/libgnuradio-core.so: undefined reference to `fftwf_malloc'
> ../../src/lib/.libs/libgnuradio-core.so: undefined reference to 
> `fftwf_export_wisdom_to_fil e'
> ../../src/lib/.libs/libgnuradio-core.so: undefined reference to 
> `fftwf_destroy_plan'
> ../../src/lib/.libs/libgnuradio-core.so: undefined reference to 
> `fftwf_plan_dft_1d'
> ../../src/lib/.libs/libgnuradio-core.so: undefined reference to 
> `fftwf_plan_dft_c2r_1d'
> ../../src/lib/.libs/libgnuradio-core.so: undefined reference to 
> `fftwf_plan_dft_r2c_1d'
> ../../src/lib/.libs/libgnuradio-core.so: undefined reference to 
> `fftwf_execute'
> 
> I have installed  FFTW so I cannot see why it cannot find these references?
> Can anybody help?
> 
> Thanks
> 
> Tom

Tom and everybody else: When reporting a problem *please* at a minimum
report your operating system, architecture, distribution and version.
Keeps me from having to try to read your mind...

My guess would be that the version of FFTW you installed did not have
the single precision library built and/or installed.  Not sure of your
distribution, but if you build fftw from source, these are the
configure options you want:

  $ ./configure --enable-single --enable-shared  [ and perhaps --enable-sse or 
--enable-3dnow ]

Eric




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