[ROOT] error loading user library

From: Mike Kordosky (kordosky@mail.hep.utexas.edu)
Date: Fri Jun 29 2001 - 03:36:21 MEST 

Hi,

I have a little test library that I am trying to compile and use inside
the interpreted environment.  The library compiles and links without
complaint, but once inside the environment, I get:

CINT/ROOT C/C++ Interpreter version 5.15.04, June 17 2001
Type ? for help. Commands must be C++ statements.
Enclose multiple statements between { }.
root [0] gSystem->Load("libTestRecord.so");
dlopen
error: /home/kordosky/minos/teststand/code/tree-test/./libTestRecord.so: undefined
symbol: __vt_10TestHeader
Load Error: Failed to load Dynamic link library
/home/kordosky/minos/teststand/code/tree-test/./libTestRecord.so
*** Interpreter error recovered ***
root [1] 

Could someone point me in the right direction?

Thanks,

Mike Kordosky

The library header file is:

//
// TestRecord
//
// a class used to test tree i/o
//
#include <string>
#include "TObject.h"
#include "TClonesArray.h"
#include "TH1.h"

class TestHeader: public TObject{
	private:
			Char_t fLoc;
			string fName;
			UInt_t fRun;
			Double_t fEnv[8];
			Float_t fHV;
			UShort_t fCookie;
	public:
			TestHeader();
			~TestHeader();
			void	Set(Char_t loc, string name, UInt_t Run,
Double_t* env, 
					 Float_t hv, UShort_t cookie);
	ClassDef(TestHeader, 1)
};

class TestRecord: public TObject{
	private:
			Int_t fNumSum;
			TestHeader fHdr;
			TClonesArray* fSummary; //-> clones array of
record summaries
			static TClonesArray* fgSummary;
	public:
			TestRecord();
			~TestRecord();
			void SetHeader(Char_t loc, string name, UInt_t
Run, Double_t* env,
					 Float_t hv, UShort_t cookie); 
			void AddSummary(Double_t random);
			void Clear(Option_t* option = "");
			static void Reset(Option_t* option = "");
	ClassDef(TestRecord, 1)
};


class TestSummary: public TObject{
	private:
			UShort_t fType;
			Double_t fMean;
			Float_t fHV;
			TH1F* fH;
	public:
			TestSummary() : fH(0) { }
			TestSummary(Double_t random);
			~TestSummary();
	ClassDef(TestSummary, 1)
};



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// Graduate Research Assistant  //  High Energy Physics          //
// RLM Office: (512) 471-8426  //  University of Texas, Austin   //
// RLM Lab: (512) 471-3526    //  kordosky@hep.utexas.edu        //
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