Using FFTW for RooFit in ROOT

[Edmundo Barriga]

Hello,

I am using RooFit to fit a Voigt distribution to data. I used to do this by asking in my code to convolute a Gaussian with a BW. This was done thanks to a package called FFTW (in CentOS 7). Now, that I tried to do the same in Alma 9, Root was not built with the package . [ If I run 'root-config --has-fftw3'  a 'no' is printed ]

I wanted to ask if the next time we build Root, could we add the flag to include the FFTW package? 

In the meantime, does someone know if I have to download the FFTW package and rebuild Root to have access to it?

Thanks!

[igal jaegle.]

In principle, you do not need to compile ROOT but you can either copy a pre-compiled version (https://root.cern/install/) or used one on cvmfs (/cvmfs/sft.cern.ch/lcg/app/releases/ROOT)

tks ig.

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