[ROOT] problems

From: Marco Garbini (Marco.Garbini@bo.infn.it)
Date: Fri Nov 05 2004 - 18:58:23 MET


Dear rooters I have a problem; I'm trying to compile my first root 
program; if I derive a class from a  TObject  I get  the following result:
 gcc Muone.C -Wno-deprecated -O -Wall -fPIC -pthread 
-I/cern/root/include -L-L/cern/root/lib -lCore -lCint -lHist -lGraf 
-lGraf3d -lGpad -lTree -lRint -lPostscript -lMatrix -lPhysics -pthread 
-lm -ldl -rdynamic  -L/cern/root/lib -lCore -lCint -lHist -lGraf 
-lGraf3d -lGpad -lTree -lRint -lPostscript -lMatrix -lPhysics -lGui 
-pthread -lm -ldl -rdynamic  -o Muone
tmp/ccwxZ1PI.o(.text+0x41): In function 
`__static_initialization_and_destruction_0(int, int)':
: undefined reference to `ROOT::GenerateInitInstance(Muone const*)'
collect2: ld returned 1 exit status
make: *** [Muone] Error 1

The code is the following:
Muone.C
#include "Muone.h"
ClassImp(Muone);
int main() {
};


Muone.h
#include "TObject.h"

class Muone : public TObject {
 public:
  Muone() {};
  virtual ~Muone() {};
 
 private:
 Float_t   Mene;       //muon energy
  ClassDef(Muone,0)  //Eas Muone
};

Thanks for your help
Marco



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