Re: [gentoo-science] Searching for rfftw.h

[Justin]

Honza Macháček schrieb:
>   Justin wrote:
>
>> Does anyone has  rfftw.h? It should be in /usr/include/ ...
>
>   Does any package need it? I don't have that file and nothing ever
> complained, as far as I remember. After all, drfftw.h or srfftw.h can
> allways be included specifically.
>
>   That said, the symlik belongs -- or rather should belong -- to
> fftw2, fftw3 does not structure its headers that way; I have installed
> both sci-libs/fftw-2.1.5-r3 and sci-libs/fftw-3.1.2, bud qdepends -Q
> says nothing depends on the 2 series version (that may be why nothing
> complained), and only sci-mathematics/octave-3.0.0 on the 3 series one.
>
>   From fftw-2.1.5-r3.ebuild:
>
>>         if use float; then
>>                 for f in "${D}"/usr/{include,$(get_libdir)}/*sfft*; do
>>                         ln -s $(basename ${f}) ${f/sfft/fft}
>>                 done
>>         else
>>                 for f in "${D}"/usr/{include,$(get_libdir)}/*dfft*; do
>>                         ln -s $(basename ${f}) ${f/dfft/fft}
>>                 done
>>         fi
>
>   That code does not create the rfftw.h symlink, but looks like it
> actually was intended to do so and the omission is an ebuild error.
> Definitely if float is in USE, srfftw.h should be linked, otherwise
> drfftw.h. And of course it is you in the end who should decide if you
> want single or double precision variant to be used by default.
>
>   With best regards
>                 Honza Macháček
>
ccp4 depends on fftw-2. And the build has an error because of not 
finding the rfftw.h. It's not fatal, but there mide be some functions 
broken.
It should be linked with and without "float". It looks like the ebuild 
doesn' t do it.