Elias, I do not see this problem. Did you follow carefully the insyructions at: http://root.cern.ch/root/HowtoPyROOT.html in particular did you specify --enable-explicitlink in configuring? Rene Brun On Mon, 3 May 2004, Elias Athanasopoulos wrote: > Dear all, > > I tried to run the PyROOT demos, but: > > elathan@velka:/usr/local/share/doc/root/tutorials> python demo.py > Traceback (most recent call last): > File "demo.py", line 11, in ? > import ROOT > File "/usr/local/lib/root/ROOT.py", line 26, in ? > from libPyROOT import * > ImportError: /usr/local/lib/root/libPyROOT.so: undefined symbol: _ZNK7TObject7DoErrorEiPKcS1_Pc > > It seems that libPyROOT.so is not linked against the ROOT libraries. > > elathan@velka:/usr/local/lib/root> ldd libPyROOT.so > libstdc++.so.5 => /usr/lib/libstdc++.so.5 (0x400ef000) > libm.so.6 => /lib/libm.so.6 (0x401a8000) > libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x401ca000) > libc.so.6 => /lib/libc.so.6 (0x401d2000) > /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x80000000) > > I modified the linking stage using root-config: > > elathan@velka:/opt/root/root> g++ -shared -Wl,-soname,libPyROOT.so -O -o lib/libPyROOT.so pyroot/src/ConstructorDispatcher.o pyroot/src/MemoryRegulator.o pyroot/src/MethodDispatcher.o pyroot/src/MethodHolder.o pyroot/src/ObjectHolder.o pyroot/src/PyBufferFactory.o pyroot/src/RootModule.o pyroot/src/RootWrapper.o pyroot/src/TPython.o pyroot/src/Utility.o pyroot/src/G__PyROOT.o /usr/lib/python2.2/config/libpython2.2.a `root-config --libs` > > Then, I copied the new libPyROOT.so to ROOT's installation directory > and I was able to run the demos without problems. > > Is libPyROOT.so intentionaly not linked with ROOT libs? > > I may be wrong on this, but using the current ROOT's Makefiles you > can have access to PyROOT only via CINT's interactive mode (i.e. load > libPyROOT.so after CINT has loaded all the other needed ROOT libs). > > Regards, >
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