I recently upgraded to the MacPython binary off python.org because I needed the python framework not included in the built-in mac python (lame) for another project. I guess I could have built from source but I liked how the binary kept everything clean and it was relatively straight forward to get going. I was curious enough to then rebuild mapnik against the new binary, problems problems problems ensued (not related to mapnik)... I imagine this will bite anybody who upgrades their core python and tries to rebuild mapnik and also happens to have the boost libs built from macports.
The scenario goes as follows... $ sudo python scons/scons.py TIFF_INCLUDES=/usr/local/include JPEG_LIBS=/opt/local/lib JPEG_INCLUDES=/opt/local/include DEBUG=y BOOST_LIBS=/usr/local/lib BOOST_INCLUDES=/usr/local/include/boost-1_35 Mapnik will build just fine and not complain but when importing I get the "Fatal Python error: Interpreter not initialized (version mismatch?)". Turned out that my new mapnik build (from r738 at the time of this writing) was still linking to my old boost libraries in /opt/local/lib. I found this out by doing: $ otool -L /Library/Frameworks/Python.framework/Versions/Current/lib/python2.5/site-packages/mapnik/_mapnik.so Why the mac does this I'm not sure but the output clearly shows that mapnik isn't linked to the correct boost libraries even though I just specified everything in the scons build and had rebuilt all the boost libraries in /usr/local/lib. So to sanitize everything I removed _mapnik.so and my entire mapnik svn checkout, also removed all the macports boost garbage I had leftover from my previous installation (this is most likely the problem). It was only after removing the /opt/local/lib stuff that I was able to get mapnik to read my boost libs in /usr/local/lib even though that is what I specified in my scons arguments. $ sudo rm /Library/Frameworks/Python.framework/Versions/Current/lib/python2.5/site-packages/mapnik/_mapnik.so $ sudo port uninstall boost I then followed the boost build instructions at http://trac.mapnik.org/wiki/MacInstallation. The symbolic links were a little different on my system, they were as follows... Notice the libboost_python link at the end (the crux of the fatal error). $ sudo ln -s libboost_system-mt-1_35.dylib boost_system-mt.dylib $ sudo ln -s libboost_system-mt-1_35.dylib libboost_system-mt.dylib $ sudo ln -s libboost_filesystem-mt-1_35.dylib libboost_filesystem-mt.dylib $ sudo ln -s libboost_regex-mt-1_35.dylib libboost_regex-mt.dylib $ sudo ln -s libboost_iostreams-mt-1_35.dylib libboost_iostreams-mt.dylib $ sudo ln -s libboost_program_options-mt-1_35.dylib libboost_program_options-mt.dylib $ sudo ln -s libboost_thread-mt-1_35.dylib libboost_thread-mt.dylib $ sudo ln -s libboost_python-mt-1_35.dylib libboost_python-mt.dylib >From there I was able to rebuild and run mapnik without any more hitches. Going to add this to the wiki right now. If you see any problems with this please let me know. -Matt _______________________________________________ Mapnik-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/mapnik-users
