I have installed ROOT 6.04/02 .When I try to use RooFFTConv I get
Error in <TUnixSystem::FindDynamicLibrary>: FFTW[.so | .dll | .dylib | .sl | .dl | .a] does not exist in /home/turra/root/lib:/home/turra/root/lib:.:/home/turra/root/lib:/lib64/tls/x86_64:/lib64/tls:/lib64/x86_64:/lib64:/usr/lib64/tls/x86_64:/usr/lib64/tls:/usr/lib64/x86_64:/usr/lib64
Error in <TVirtualFFT::FFT>: handler not found
How did you install ROOT? Did you take the binaries from root.cern.ch/content/release-60402 ? If yes, can you use a newer version? FTTW was included as builtin from 6.06.X with the option ‘builtin_fftw3’
Hi, I hope it’s okay to reopen this topic. I have the same problem. For example when I try to run the FFT tutorial I get the error
Processing FFT.C...
Error in <TMacOSXSystem::DynamicPathName>: FFTW[.so | .dll | .dylib | .sl | .dl | .a] does not exist in /Users/kxg023/alicesw/aliphysics/master/inst/lib:/Users/kxg023/alicesw/aliroot/master/inst/lib:/Users/kxg023/alicesw/aliroot/master/inst/lib/tgt_macosx64:/Users/kxg023/alicesw/alien/api/lib:/Users/kxg023/alicesw/aliphysics/master/inst/lib:/Users/kxg023/alicesw/aliroot/master/inst/lib:/Users/kxg023/alicesw/aliroot/master/inst/lib/tgt_macosx64:/Users/kxg023/alicesw/geant3/v2-0/inst/lib/tgt_macosx64:/Users/kxg023/alicesw/geant3/v2-0/inst/lib:/Users/kxg023/alicesw/geant3/v2-0/inst/lib64:/Users/kxg023/alicesw/root/alice_v5-34-30/inst/lib:/Users/kxg023/alicesw/alien/api/lib::.:/Users/kxg023/alicesw/root/alice_v5-34-30/inst/lib::/Users/kxg023/alicesw/root/alice_v5-34-30/inst/lib/cint/cint/stl
Error in <TVirtualFFT::FFT>: handler not found
Error: illegal pointer to class object hm 0x0 6105 FFT.C:95:
*** Interpreter error recovered ***
I am using ROOT v5-34-30 and OSX, but I also have the same error using Linux.
How did you fix the problem? Did you reinstall ROOT, or install the FFTW library separately and then link it somehow? I am quite new to ROOT so I’ll probably need step-by-step instructions! Thanks!
Dear KLGraham,
For ROOT 5, you will need to build yourself the binaries enabling fftw3 option (with -Dfftw3=ON). See the instructions at root.cern.ch/building-root
Pere