Defining a RooFit class

[bomben]

Hi all,
I’m trying to define a pdf via RooFit (see the attached file).

I compile it:

g++ -c dGaus.cxx -pthread -m32 -I/home/bomben/work/root-522/root/include

and then I try to link:

g++ -o dGaus dGaus.o -lCore -lCint -lRIO -lNet -lHist -lGraf -lGraf3d -lGpad -lTree -lRint -lPostscript -lMatrix -lPhysics -lMathCore -lThread -lGui -pthread -lm -ldl -rdynamic -lRooFit -lMinuit -lRooFitCore -lRooStats

but I get:

dGaus.o: In function __static_initialization_and_destruction_0(int, int)': dGaus.cxx:(.text+0x165): undefined reference to ROOT::GenerateInitInstance(DoubleGauss const*)’
dGaus.o: In function DoubleGauss::IsA() const': dGaus.cxx:(.text._ZNK11DoubleGauss3IsAEv[DoubleGauss::IsA() const]+0xf): undefined reference to DoubleGauss::Class()’
dGaus.o:(.rodata._ZTV11DoubleGauss[vtable for DoubleGauss]+0xe8): undefined reference to DoubleGauss::ShowMembers(TMemberInspector&, char*)' dGaus.o:(.rodata._ZTV11DoubleGauss[vtable for DoubleGauss]+0xec): undefined reference to DoubleGauss::Streamer(TBuffer&)’
dGaus.o:(.rodata._ZTV11DoubleGauss[vtable for DoubleGauss]+0x2b8): undefined reference to non-virtual thunk to DoubleGauss::ShowMembers(TMemberInspector&, char*)' dGaus.o:(.rodata._ZTV11DoubleGauss[vtable for DoubleGauss]+0x2bc): undefined reference to non-virtual thunk to DoubleGauss::Streamer(TBuffer&)’
collect2: ld returned 1 exit status

It looks to me like some methods are not declared.

Any help is very welcome!

Regards,
Marco
dGaus.cxx (2.34 KB)

[pcanal]

Hi,

You need to generate, compile and link a dictionary file (using rootcint) for you class.

Cheers,
Philippe.