Thanks for the post.
You indeed do have libfftw3 on your system, however ROOT seems to have been configured without it. Unfortunately, it is not enough to add it on the system to have all the necessary components in ROOT.
The solution would be to reconfigure and rebuild ROOT, perhaps profiting from a more recent version (6.32.02 is already out, will be announced today).
OK, I will try to rebulid ROOT, another question is that I also need minuit2, but I could’t find it in Dependencies for Ubuntu. Should I use “sudo apt-get install minuit2-dev” or something else?
This is an excellent question - thanks. I add some resources for future reference.
Minuit2 is the default in the 6.32 series (since the 6.30 series): this is also clarified in the build options and Release Notes.
Of course it’s normal not to know everything, hopefully this post will help other users!
Sorry for my late reply becasue of my cousin’s wedding.
At first time I guess maybe fftw3 and minuuit2 are not default in 6.22. But after I read build options carefully,I found just minuit2 is “OFF”. Whatever, this time I add this:
cmake -Dfftw3=ON -Dminuit2=ON ../root
After reconfigure and rebuild, I indeed got fftw3 and minuit2.
Thanks again!