[SciPy-user] problems finding fftw

Pearu Peterson pearu at scipy.org
Tue Apr 13 10:32:41 CDT 2004



On Tue, 13 Apr 2004, John Hunter wrote:

> 
> I am building scipy from CVS, checked out last night, and am having
> trouble getting it to find fftw.  I built fftw 
> 
> 
>   502  cd /usr/local/src/
>   504  tar xvfz ~jdhunter/c/src/fftw-2.1.3.tar.gz 
>   505  cd fftw-2.1.3/
>   507  configure --enable-i386-hacks --enable-threadss
                                                       ^ - typo!!

>   554  make clean
>   556  configure --enable-threads --enable-float --enable-i386-hacks
>   557  make
>   558  make install
> 
> and it is installed to /usr/local
> 
>     peds-pc311:/var/tmp/builds/scipy> ls -l /usr/local/lib/libfftw*
>     -rw-r--r-- 1 root root 952600 Apr 12 17:47 /usr/local/lib/libfftw3.a

> But when I build I get fftw not found

> Any idea what is going wrong?

Well, you seem to installing fftw-2.1.3 but the file libfftw3.a, for 
instance, is of fftw-3.x. And at the moment support for fftw-3.x is
unimplemented in scipy.fftpack. So, may be there is something wrong in 
your fftw building script.

Pearu




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