Hi,
Mixing RDF and FastJet sounds like an interesting experiment, thanks for posting.
I suspect you did not properly include all the necessary headers in the fastjet_fcc1.cc: could you cross-check? (Note that it does not seem to be an issue of ROOT, since you have errors relative to fastjet and even the standard library).
If I may, I could suggest an improvement of your C++ code: it could be made much more elegant, and non-jitted, with Construct (see also this post for example RDataFrame: Snapshot does not work properly after Define and Range call - #4 by mczurylo )
Cheers,
D