Hello,

Tarak Thakore gave me the solution, yet for future users, here are the 
informations. I am working with an old 2.7.1 version and using g++ 4.6.3 
on ubuntu 12.04. There was a missing flag (-Wl,--no-as-needed) which is 
apparently necessary for ubuntu users. The present version of 2.7.1 have 
this fix already implemented.

Thanks


On Tue, 30 Oct 2012 16:00:28 +0000, [log in to unmask] 
wrote:
> Dear Raphaël
> To be able to assist you, you need to provide some information on 
> your system
> (os, compiler etc) and which version of GENIE you are trying to 
> install.
> cheers
> Costas
>
> On 30 Oct 2012, at 14:43, dupre wrote:
>
> ---
> Dr. Constantinos (Costas) Andreopoulos
> Staff Scientist
>
> Science and Technology Facilities Council (STFC)
> Rutherford Appleton Laboratory
> Particle Physics Dept. (R1, 2.90)
> Harwell Oxford Campus, OX11 0QX, UK
> tel (office):  +44-(0)1235 445091
> fax (office): +44-(0)1235 446733
> mobile:        +44-(0)7540 847333
> w3: http://costas.andreopoulos.eu<http://costas.andreopoulos.eu/>
>
>
> Well these two libraries compile without even a warning, i just
> checked again and I naturally did the make clean and then make. Yet,
> there is always a chance that the problem comes from some old files
> remaining somewhere and missed by make clean, I will check that.
>
> Yes I use LHAPDF as default.
>
> On Tue, 30 Oct 2012 10:29:17 -0400, Steve Dytman wrote:
> some of the libraries aren't getting compiled correctly.  Look at
> GEVGDrivers and
> GEVGCore.  Have you tried 'make clean' followed by 'make'.  Changes 
> in code
> that links one src area to another can disrupt linkage.
>
> I've had trouble with LHAPDF and Pythia at times.  Are you using
> LHAPDF as default instead
> of Cernlib?
>
> Steve
>
> On 10/30/2012 10:10 AM, dupre wrote:
> Hello,
>
> I am using the genie MC, but stopped using it since a year or so, now
> I am unable to compile it any more on my new machine (it crashes at
> the linking stage). Would you know about any incompatibilities, which
> would have appeared recently with a new version of one of the 
> software
> or libraries used by genie?
>
> The error message is puzzling to me since he misses some functions
> that seem to be correctly declared and linked. I past the error here
> in case you already know this problem or if I miss something obvious:
>
>> g++  -Wall -fPIC  -O2   -Wno-strict-aliasing -ffriend-injection -c 
>> gEvGen.cxx -I/projet/nucleon/dupre/Software/root/include 
>> -I/usr/include/libxml2 
>> -I/projet/nucleon/dupre/Software/log4cpp/install/include 
>> -I/projet/nucleon/dupre/Software/lhapdf-5.8.8/install/include 
>> -I/projet/nucleon/dupre/Software/genie/src/
>> g++ -g gEvGen.o -L/projet/nucleon/dupre/Software/genie/lib 
>> -lGAlgorithm -lGBaryonResonance -lGBase -lGBodekYang -lGCharm -lGCoh 
>> -lGDfrc -lGDIS -lGCrossSections -lGDecay -lGElas -lGElFF -lGHEP 
>> -lGEVGCore -lGEVGModules -lGEVGDrivers -lGGiBUU -lGHadronTransp 
>> -lGFragmentation -lGInteraction -lGLlewellynSmith -lGMEC -lGMessenger 
>> -lGNuGamma -lGNuE -lGNtuple -lGNuclear -lGNumerical -lGQPM -lGPDG 
>> -lGPDF -lGQEL -lGRES -lGRegistry -lGReinSeghal -lGUtils -lGGeo 
>> -lGFluxDrivers -lGMuELoss -L/projet/nucleon/dupre/Software/root/lib 
>> -lGui -lCore -lCint -lRIO -lNet -lHist -lGraf -lGraf3d -lGpad -lTree 
>> -lRint -lPostscript -lMatrix -lPhysics -lMathCore -lThread -pthread 
>> -lm -ldl -rdynamic -lMinuit -lGeom -lEG -lEGPythia6 
>> -L/projet/nucleon/dupre/Software/pythia6/v6_412/lib -lPythia6 
>> -L/projet/nucleon/dupre/Software/RADGEN -lradgen 
>> /projet/nucleon/dupre/Software/RADGEN/radgen.o  -L/cern/pro/lib 
>> -lpawlib -lpacklib -lkernlib -lmathlib 
>> -L/projet/nucleon/dupre/Software/lhapdf-5.8.8/install/lib -lLHAPDF  
>> -L/usr/lib/x86_64-linux-gnu -lxml2 
>> -L/projet/nucleon/dupre/Software/log4cpp/install/lib -llog4cpp -lnsl  
>> -o /projet/nucleon/dupre/Software/genie/bin/gevgen
>> /projet/nucleon/dupre/Software/genie/lib/libGEVGDrivers.so: 
>> undefined reference to `genie::AlgFactory::Instance()'
>> /projet/nucleon/dupre/Software/genie/lib/libGEVGCore.so: undefined 
>> reference to `genie::GHepRecord::NEntries(int, int) const'
>> /projet/nucleon/dupre/Software/genie/lib/libGUtils.so: undefined 
>> reference to `genie::NuclearData::DeuteriumSuppressionFactor(double)'
>>
>> ...
>>
>
>
> --
>
> Raphaël Dupré
> Institut de Physique Nucléaire d'Orsay

-- 

Raphaël Dupré
Institut de Physique Nucléaire d'Orsay