[vsipl++] patch: enable/disable fftwf, fftw, and fftwl individually

[Stefan Seefeld]

Jules,

thanks for your feedback. Please find attached the relevant part of the 
patch, somewhat revised:

* I moved the definition of 'provide_fft_<type>' to configure.ac to make 
sure it gets initialized to 0 before any test will set it.

* I fixed code (in configure.ac) that assumed its default value was '', 
not '0'.

* I use fftw_has_<type> in my fftw tests, and then propagate any 'on' 
flags to 'provide_fft_<type>'.

OK ?

Thanks,
		Stefan

-- 
Stefan Seefeld
CodeSourcery
stefan at codesourcery.com
(650) 331-3385 x718
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