I am trying to run an old macro that works fine on my old system (Fedora 8 with ROOT_v5.14 installed).
Now I am using ROOT_V5.22 in Fedora 10 with gcc v.4.3.2 and I could not compile this macro. When I type in:
root  .L myMacro.C+
error: ‘Pi’ is not a member of ‘TMath’
the line where has this problem looks like this:
numberOfRows = (Int_t) (2*TMath::Pi()*radius / padSize);
It’s rather strange because in ROOT when I type in
root  TMath::Pi() (Double_t)3.14159265358979312e+00
it seems correct here. Then why there is problem when it is in a macro?