Re: Re: [ROOT] geant3_vmc undefined symbol: _ZN10TVirtualMC14DefineParticleEiPKc15TMCParticleTypeddd

Yes, looks like the interface forces you to use the prototype with more parameters. Please try that one.

regards,
Andrei

Stefano Dusini wrote:
> But the geant3/TGeant3/TGeant3.cxx implementation is
>
> //______________________________________________________________________
> Bool_t TGeant3::DefineParticle(Int_t pdg,const char*
> name,TMCParticleType type,
> Double_t mass, Double_t charge, Double_t lifetime)
> {
> // Old function definition, now replaced with more arguments
>
> TVirtualMC::DefineParticle(pdg, name, type, mass, charge, lifetime);
>
> return false;
> }
>
> and so DefineParticle is undefined...
>
> regards, Stefano
>
> Andrei Gheata wrote:

>> Hi Stefano,
>>
>> In C++ when a function prototype has ' = 0' it means it is pure 
>> virtual, i.e. it is only an interface that has to be implemented 
>> mandatory by the derived classes. You can never instantiate an object 
>> of the base class type, but only the derived ones. You will find the 
>> method implementation in geant3/TGeant3/TGeant3.cxx for G3 case. Of 
>> course it has to match the base class prototype.
>>
>> Cheers,
>> Andrei
>>
>> Stefano Dusini wrote:
>>> Hi Andrei
>>>
>>> but TVirtualMC::DefineParticle(pdg, name, type, mass, charge, lifetime);
>>> dose not exist in ROOT there is only the prototype but the 
>>> implementation, or at least I did not find. At the moment I'm using 
>>> root_v5.23/02
>>>
>>> regards, Stefano
>>>
>>> Andrei Gheata wrote:
>>>> Hi Stefano,
>>>>
>>>> TVirtualMC is a root class (in vmc library) and defines the 2 
>>>> prototypes for the virtual function DefineParticle() that are 
>>>> implemented in the derived TGeant3 (a class in the G3 library). In 
>>>> your case apparently the TVirtualMC class version is not in sync 
>>>> with the TGeant3 one. Most likely you have to upgrade ROOT to at 
>>>> least 5.23/02 (as specified at 
>>>> http://root.cern.ch/drupal/content/how-use-virtual-monte-carlo#Download) 
>>>>
>>>>
>>>> Cheers,
>>>> Andrei
>>>>
>>>> Stefano Dusini wrote:
>>>>> I have check inside the code of geant3_vmc_1.10 and DefineParticle 
>>>>> has two implementation
>>>>>  //______________________________________________________________________ 
>>>>>
>>>>> Bool_t TGeant3::DefineParticle(Int_t pdg,const char* 
>>>>> name,TMCParticleType type,
>>>>>                       Double_t mass, Double_t charge, Double_t 
>>>>> lifetime)
>>>>> {
>>>>> // Old function definition, now replaced with more arguments
>>>>>
>>>>>   TVirtualMC::DefineParticle(pdg, name, type, mass, charge, lifetime);
>>>>>
>>>>>   return false;
>>>>> }
>>>>>
>>>>>
>>>>> //______________________________________________________________________ 
>>>>>
>>>>> Bool_t TGeant3::DefineParticle(Int_t pdg,const char* name, 
>>>>> TMCParticleType mcType,
>>>>>                       Double_t mass, Double_t charge, Double_t 
>>>>> lifetime,
>>>>>                       const TString& /*pType*/, Double_t /*width*/,
>>>>>                       Int_t /*iSpin*/, Int_t /*iParity*/, Int_t 
>>>>> /*iConjugation*/,
>>>>>                       Int_t /*iIsospin*/, Int_t /*iIsospinZ*/, 
>>>>> Int_t /*gParity*/,
>>>>>                       Int_t /*lepton*/, Int_t /*baryon*/,
>>>>>                       Bool_t /*stable*/, Bool_t /*shortlived*/,
>>>>>                       const TString& /*subType*/,
>>>>>                       Int_t /*antiEncoding*/, Double_t /*magMoment*/,
>>>>>                       Double_t /*excitation*/)
>>>>> {
>>>>> //
>>>>> // Set a user defined particle
>>>>> // Function is ignored if particle with specified pdg
>>>>> // already exists and error report is printed.
>>>>> // ---
>>>>>
>>>>>   // Check if particle with specified pdg already exists
>>>>>   // in TGeant3
>>>>>   if (IdFromPDG(pdg) > 0) {
>>>>>     Error("SetParticle", "Particle already exists.");
>>>>>     return kFALSE;
>>>>>   }
>>>>>
>>>>>   // Check if particle type is known to Geant3
>>>>>   Int_t itrtyp = TransportMethod(mcType);
>>>>>   if (itrtyp < 0) {
>>>>>     Error("SetParticle", "Unknown particle transport.");
>>>>>     return kFALSE;
>>>>>   }
>>>>>
>>>>>   // Add particle to Geant3
>>>>>   Gspart(fNG3Particles++, name, itrtyp, mass, charge, lifetime);
>>>>>
>>>>>   // Add particle to TDatabasePDG
>>>>>   // (if it does not yet exist here)
>>>>>   if (!TDatabasePDG::Instance()->GetParticle(pdg))
>>>>>     TDatabasePDG::Instance()
>>>>>       ->AddParticle(name, name, mass, kTRUE, 0, charge*3,
>>>>>                     ParticleClass(mcType).Data(), pdg);
>>>>>
>>>>>   // Resize fPDGCode table if needed
>>>>>   if ( fNPDGCodes >= fPDGCode.GetSize() )
>>>>>     fPDGCode.Set( fPDGCode.GetSize() + 100);
>>>>>
>>>>>   fPDGCode[fNPDGCodes++] = pdg;
>>>>>
>>>>>   return kTRUE;
>>>>> }
>>>>>
>>>>> In my code I use the first implementation.
>>>>>
>>>>> To my understanding (sorry but I'm not a c++ expert) the first one 
>>>>> points to ROOT while the second not. I have check inside root src 
>>>>> code but I did not find any implementation of 
>>>>> TVirtualMC::DefineParticle only the definition in TVirtualMC.h.
>>>>>
>>>>> Do I have to use in my code the second implementation of 
>>>>> TGeant3::DefineParticle ?
>>>>>
>>>>> Thanks
>>>>> Stefano
>>>>> Andrei Gheata wrote:
>>>>>> Stefano, looks like your G3 compilation is inconsistent. Just 
>>>>>> refresh the geant3 directory and recompile it from scratch. Make 
>>>>>> also sure that the library you compile is the first one accessible 
>>>>>> in LD_LIBRARY_PATH in case you have multiple versions.
>>>>>>
>>>>>> Cheers,
>>>>>> Andrei
>>>>>>
>>>>>> Stefano Dusini wrote:
>>>>>>> Hi,
>>>>>>>
>>>>>>> I have recompiled root with
>>>>>>>
>>>>>>> --enable-pythia6 --with-pythia-libdir=$KITS_DIR/pythia6
>>>>>>>
>>>>>>> recompiled geant3_vmc_1.10
>>>>>>>
>>>>>>> but the keep crash with the same error
>>>>>>>
>>>>>>> /sps/opera/scratch/dusini/sw/OpRelease/3.1/OpSim/v7r4/Linux/opsim.exe: 
>>>>>>> symbol lookup error: 
>>>>>>> /sps/opera/scratch/dusini/sw/OpRelease_fluka/kits/geant3_vmc_1.10/lib/tgt_linux/libgeant321vmc.so: 
>>>>>>> undefined symbol: 
>>>>>>> _ZN10TVirtualMC14DefineParticleEiPKc15TMCParticleTypeddd
>>>>>>>
>>>>>>> This error occur at the point where I define a new particle
>>>>>>>
>>>>>>> //   DefineParticle(PDGCode, Name, Type, Mass, Charge, Lifetime)
>>>>>>> gMC->DefineParticle(kOpPDGDPlus, "OPERA D +", kPTMuon, 
>>>>>>> kOpMassDPlus, 1., 1e+12);
>>>>>>>
>>>>>>> where gMC is a TGeant3TGeo object.
>>>>>>>
>>>>>>> regards,
>>>>>>> Stefano
>>>>>>>
>>>>>>> Rene Brun wrote:
>>>>>>>> TMCParticle class is in libEGPythia6.
>>>>>>>> see top right corner of: 
>>>>>>>> http://root.cern.ch/root/html/TMCParticle.html
>>>>>>>>
>>>>>>>> Rene Brun
>>>>>>>>
>>>>>>>> Stefano Dusini wrote:
>>>>>>>>> I'm trying to upgrade our (OPERA) detector simulation software 
>>>>>>>>> to use ROOT v5.23 and therefore I have also upgraded the 
>>>>>>>>> geant3_vmc version to v1.10. I have also modify the code to use 
>>>>>>>>> TVirtualMC as the only interface to the MC transportation code. 
>>>>>>>>> But at run time I get this error
>>>>>>>>>
>>>>>>>>> /sps/opera/scratch/dusini/sw/OpRelease/3.1/OpSim/v7r4/Linux/opsim.exe: 
>>>>>>>>> symbol lookup error: 
>>>>>>>>> /sps/opera/scratch/dusini/sw/OpRelease_fluka/kits/geant3_vmc_1.10/lib/tgt_linux/libgeant321vmc.so: 
>>>>>>>>> undefined symbol: 
>>>>>>>>> _ZN10TVirtualMC14DefineParticleEiPKc15TMCParticleTypeddd
>>>>>>>>>
>>>>>>>>> In fact using
>>>>>>>>>
>>>>>>>>> nm -u libgeant321vmc.so
>>>>>>>>>
>>>>>>>>> I see that
>>>>>>>>>
>>>>>>>>> U _ZN10TVirtualMC14DefineParticleEiPKc15TMCParticleTypeddd
>>>>>>>>>
>>>>>>>>> where the U means (from nm man page) that the symbol is undefined.
>>>>>>>>>
>>>>>>>>> What is wrong?
>>>>>>>>>
>>>>>>>>> The geant3_vmc library has been build just with
>>>>>>>>>
>>>>>>>>> gmake
>>>>>>>>>
>>>>>>>>> and the environmental variable $ROOTSYS pointing to the ROOT 
>>>>>>>>> v5.23 directory and $ROOTSYS/lib added to the $LD_LIBRARY_PATH 
>>>>>>>>> and $ROOTSYS/bin added to $PATH.
>>>>>>>>>
>>>>>>>>> Do I have to specify something else when I compile geant3_vmc?
>>>>>>>>> Do I have to use some special switch when I compile root?
>>>>>>>>>
>>>>>>>>> Thanks a lot
>>>>>>>>> Stefano
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>
>>>>>
>>>
>>>