Hi Constantin, You could try to compile the fortran stuff with -single_module. BTW: are you aware that you can install root3 with cernlib support from fink (http://fink.sourceforge.net)? HTH, Remi On Jan 5, 2004, at 10:38 AM, Constantin Loizides wrote: > Hi, sorry to bother again, > but this time I really think its > a problem: > > When trying to use pythia with Root and external > compile libpythia6 or with Aliroot I run > into the "multiple definitions of symbols" > problem (see down), known for the dyld on mac. > The definition of HEPEVT in pythia6x.f and > libEG.so (Hepevt.h) simply clash and > the linker does not simply take > the first defintion and disregards the > second (as e.g. ld on linux does). > > I tried to solve it by explicitely > makeing hepevt external in Hepevt.h > but then loading libEG.so fails > with very strange missing symbols > which are in libPythia6.so (which > is loaded first). > > Any ideas? I have been browsing > the web, it seems that one has > to work around it by suitably > using "external" but maybe someone > knows of a superior approach? > Maybe not using flat namespaces? > > Regards, Constantin > > > ALIROOT head (with config option to use pythia) > --------------- > root [0] gAlice->Init("ConfigPPR.C"); > **************************************************************** > * * > * You are running AliRoot version NewIO > * The cvs tag for the current program is $Name: $ > * * > **************************************************************** > Seed for random number generation= 12345 > dlopen error: dlcompat: dyld: aliroot multiple definitions of symbol > _hepevt_ > /prog/root/ali-head/lib/libEG.dylib(TGenerator.o) definition of > _hepevt_ > /prog/aliroot/ali-head/lib/tgt_Darwin/libpythia6.dylib(single module) > definition of _hepevt_ > > > ROOT 10.02 and pythia6.221 > --------------- > gSystem->Load("$PYTHIA6LIB/libPythia6.so"); // Pythia6 library > root [1] gSystem->Load("libEG.so"); > root [2] gSystem->Load("libEGPythia6.so"); > dlopen error: dlcompat: dyld: /prog/root/ali-head/bin/root.exe > multiple definitions of symbol _hepevt_ > /prog/root/ali-head/lib/libEG.so definition of _hepevt_ > /prog/pythia6/libPythia6221.dylib(single module) definition of _hepevt_ > > Load Error: Failed to load Dynamic link library > /prog/root/ali-head/lib/libEGPythia6.so > > > --------------------------------------------------------------------- Failure is not an option. It comes bundled with your Microsoft product. (Ferenc Mantfeld) ********************************************************************* Remigius K. Mommsen e-mail: mommsen@slac.stanford.edu University of California, Irvine URL: http://cern.ch/mommsen c/o SLAC voice: ++1 (650) 926-3595 2575 Sand Hill Road #35 fax: ++1 (650) 926-3882 Menlo Park, CA 94025, US home: ++1 (650) 233-9041 *********************************************************************
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