Hello Andi, all, The python embedded in Java works really well on MacOsX and also Ubuntu. But I am trying hard to make it work also on Scientific Linux (SLC5) with *statically* built Python. The python is a build from ActiveState.
So far, I managed to build all the needed extensions (jcc, lucene, solr) and I can run them in python, but when I try to start the java app and use python, I get: SEVERE: org.apache.jcc.PythonException: /afs/cern.ch/user/r/rchyla/public/ActivePython-2.5.5.7-linux-x86_64/INSTALLDIR/lib/python2.5/lib-dynload/time.so: undefined symbol: PyExc_IOError I understand, that the missing symbol PyExc_IOError is in the static python library: bash-3.2$ nm /afs/cern.ch/user/r/rchyla/public/ActivePython-2.5.5.7-linux-x86_64/INSTALLDIR/lib/python2.5/config/libpython2.5.a | grep IOError 0000000000004120 D PyExc_IOError 0000000000004140 d _PyExc_IOError U PyExc_IOError U PyExc_IOError U PyExc_IOError U PyExc_IOError U PyExc_IOError U PyExc_IOError U PyExc_IOError So when building JCC, I build with these arguments: lflags + ['-lpython%s.%s' %(sys.version_info[0:2]), '-L', '/afs/cern.ch/user/r/rchyla/public/ActivePython-2.5.5.7-linux-x86_64/INSTALLDIR/lib/python2.5/config', '-rdynamic', '-Wl,--export-dynamic', '-Xlinker', '--export-dynamic'] I just found instructions at: http://stackoverflow.com/questions/4223312/python-interpreter-embedded-in-the-application-fails-to-load-native-modules I don't really understand g++, but the symbol is there after the compilation bash-3.2$ nm /afs/cern.ch/user/r/rchyla/public/ActivePython-2.5.5.7-linux-x86_64/INSTALLDIR/lib/python2.5/site-packages/JCC-2.7-py2.5-linux-x86_64.egg/libjcc.so | grep IOError 0000000000352240 D PyExc_IOError 0000000000352260 d _PyExc_IOError And when starting java, I do "-Djava.library.path=/afs/cern.ch/user/r/rchyla/public/ActivePython-2.5.5.7-linux-x86_64/INSTALLDIR/lib/python2.5/site-packages/JCC-2.7-py2.5-linux-x86_64.egg" The code works find on mac (python 2.6) and ubuntu (python2.6), but not this statically linked python2.5 - would you know what I can try? Thanks. roman PS: I tried several compilations, but I was usually re-compiling JCC without building lucene etc again, I hope that is not the problem.