FTT with Root 5.24


I have updated my version of Root from 5.22 to 5.24 on my lxplus account, I am using these command line:

setenv ROOTSYS /afs/cern.ch/sw/lcg/app/releases/ROOT/5.24.00/slc4_ia32_gcc34/root setenv PATH ${PATH}:${ROOTSYS}/bin/ setenv LD_LIBRARY_PATH $ROOTSYS/lib

However I did not manage to run a code using a FFT, which was working before. I have this error:

[quote]dlopen error: libfftw3.so.3: cannot open shared object file: No such file or directory
Load Error: Failed to load Dynamic link library /afs/cern.ch/sw/lcg/app/releases/ROOT/5.24.00/slc4_ia32_gcc34/root/lib/libFFTW.so
Error in TVirtualFFT::FFT: handler not found
*** Interpreter error recovered ***[/quote]

Did I forget to do something during the update?

Thank you.


Hi Pierre-Louis,

Please add the path to fftw3 to your LD_LIBRARY_PATH, e.g.

At least it works for me…

Cheers, Bertrand.

Thank you so much, it is working now.


You’re welcome! :slight_smile:

Cheers, Bertrand.