Hello. There isn’t any documentation on how to do this so I want to ask and give future people a reference in how to do this. I used
RooClassFactory::makePdf(“Spectrum”,”x,alpha”) ;
to create a class. I then edited the evaluate section. I then use .L Spectrum.cxx+ to create a library. Within my c++ code, I then use:
gSystem->Load("libRooFit");
gROOT->ProcessLineSync(".x Spectrum.cxx+");
gSystem->Load("Spectrum_cxx.so");
however, I am getting the following:
Undefined symbols for architecture x86_64:
"Spectrum::Spectrum(char const*, char const*, RooAbsReal&, RooAbsReal&, RooAbsReal&, RooAbsReal&, RooAbsReal&, RooAbsReal&, RooAbsReal&)", referenced from:
_main in Prime.o
"vtable for Spectrum", referenced from:
Spectrum::~Spectrum() in Prime.o
NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
ld: symbol(s) not found for architecture x86_64
collect2: error: ld returned 1 exit status
make: *** [Project] Error 1
once I compile with
[code]R_LDFLAGS = root-config --ldflags
R_LIBS = root-config --libs
R_CFLAGS = root-config --cflags
R_GRAPHICS = root-config --glibs
R_ALL = $(R_LADFLAGS) $(R_LIBS) $(R_CFLAGS) $(R_GRAPHICS)
Project: Prime.C
g++ -Wall -fPIC $(R_ALL) -L $(ROOTSYS)/lib -lRooFitCore -lRooFit -lRooFitCore -lMinuit2 -D_GLIBCXX_PARALLEL -fopenmp -c -o Prime.o Prime.C
g++ -W -Wall $(R_ALL) -L $(ROOTSYS)/lib -lRooFitCore -lRooFit -lRooFitCore -lMinuit2 -lGui -D_GLIBCXX_PARALLEL -fopenmp Prime.o -o Prime
[/code]
What am I doing wrong? Thank you