I have a new intel powerbook running OS X 10.5 (leopard) which I upgraded via DVD from a factory installed 10.4. I decided to take detailed notes on every step of configuring the box as a development machine for scientific python, figuring it would be useful to others. The install of ipython, numpy and scipy went really well (only one snag in scipy following the wiki, which I updated and is noted in my notes below). But the main problem, sadly, is a strange problem I've hit trying to compile matplotlib. My compile is dying with a mysterious warning about PPC (how did that get in to the compiler flags?) with some strange hybrid of 10.4 and 10.3 stuff in the gcc command. If I manually paste in the g++ command below and remove the -arch ppc part, it compiles fine, so this is the source of my problems. I don't know if this is a feature or a bug (universal binary support?) but if someone could advise me what or where is going wrong and how to fix it, that would be great. Here is the shorted build output with the compiler command and error: BUILDING MATPLOTLIB matplotlib: 0.90.1 python: 2.5 (r25:51918, Sep 19 2006, 08:49:13) [GCC 4.0.1 (Apple Computer, Inc. build 5341)] platform: darwin REQUIRED DEPENDENCIES numpy: 1.0.4.dev4380 freetype2: found, but unknown version (no pkg-config) OPTIONAL DEPENDENCIES Gtk+: no * Building for Gtk+ requires pygtk; you must be able * to "import gtk" in your build/install environment Tkinter: Tkinter: 50704, Tk: 8.4, Tcl: 8.4 wxPython: 2.8.3.0 * WxAgg extension not required for wxPython >= 2.8 Qt: no Qt4: no Cairo: no libpng: found, but unknown version (no pkg-config) [Edit setup.cfg to suppress the above messages] ============================================================================ running build running build_py creating build creating build/lib.macosx-10.3-fat-2.5 copying lib/pylab.py -> build/lib.macosx-10.3-fat-2.5 creating build/lib.macosx-10.3-fat-2.5/matplotlib copying lib/matplotlib/__init__.py -> build/lib.macosx-10.3-fat-2.5/matplotlib copying lib/matplotlib/_cm.py -> build/lib.macosx-10.3-fat-2.5/matplotlib copying lib/matplotlib/_mathtext_data.py -> build/lib.macosx-10.3-fat-2.5/matplotlib copying lib/matplotlib/_pylab_helpers.py -> build/lib.macosx-10.3-fat-2.5/matplotlib copying lib/matplotlib/afm.py -> build/lib.macosx-10.3-fat-2.5/matplotlib copying lib/matplotlib/agg.py -> build/lib.macosx-10.3-fat-2.5/matplotlib copying lib/matplotlib/art3d.py -> build/lib.macosx-10.3-fat-2.5/matplotlib copying lib/matplotlib/artist.py -> build/lib.macosx-10.3-fat-2.5/matplotlib ..snip lots of copying.... running build_ext building 'matplotlib.ft2font' extension C compiler: gcc -arch ppc -arch i386 -isysroot /Developer/SDKs/MacOSX10.4u.sdk -fno-strict-aliasing -Wno-long-double -no-cpp-precomp -mno-fused-madd -fno-common -dynamic -DNDEBUG -g -O3 creating build/temp.macosx-10.3-fat-2.5 creating build/temp.macosx-10.3-fat-2.5/src creating build/temp.macosx-10.3-fat-2.5/CXX compile options: '-I/usr/local/include -I/usr/include -I. -I/usr/local/include/freetype2 -I/usr/include/freetype2 -I./freetype2 -I/Library/Frameworks/Python.framework/Versions/2.5/include/python2.5 -c' gcc: CXX/cxxextensions.c In file included from /usr/include/math.h:26, from /Library/Frameworks/Python.framework/Versions/2.5/include/python2.5/pyport.h:200, from /Library/Frameworks/Python.framework/Versions/2.5/include/python2.5/Python.h:57, from ./CXX/WrapPython.h:47, from CXX/cxxextensions.c:38: /usr/include/architecture/ppc/math.h:675: warning: conflicting types for built-in function 'scalb' gcc: CXX/cxx_extensions.cxx gcc: src/ft2font.cpp gcc: CXX/IndirectPythonInterface.cxx gcc: src/mplutils.cpp gcc: CXX/cxxsupport.cxx g++ -arch i386 -arch ppc -isysroot /Developer/SDKs/MacOSX10.4u.sdk -g -bundle -undefined dynamic_lookup build/temp.macosx-10.3-fat-2.5/src/ft2font.o build/temp.macosx-10.3-fat-2.5/src/mplutils.o build/temp.macosx-10.3-fat-2.5/CXX/cxx_extensions.o build/temp.macosx-10.3-fat-2.5/CXX/cxxsupport.o build/temp.macosx-10.3-fat-2.5/CXX/IndirectPythonInterface.o build/temp.macosx-10.3-fat-2.5/CXX/cxxextensions.o -L/usr/local/lib -L/usr/lib -lfreetype -lz -lstdc++ -lm -o build/lib.macosx-10.3-fat-2.5/matplotlib/ft2font.so ld: warning in /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libfreetype.dylib, file is not of required architecture ld: warning in /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libgcc_s.10.4.dylib, missing required architecture ppc in file ld: in /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libgcc_s.1.dylib, missing required architecture ppc in file for architecture ppc collect2: ld returned 1 exit status lipo: can't open input file: /var/folders/qT/qTRms9cJHNqoYnbs9+TwVk+++TI/-Tmp-//ccMsnFzZ.out (No such file or directory) ld: warning in /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libfreetype.dylib, file is not of required architecture ld: warning in /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libgcc_s.10.4.dylib, missing required architecture ppc in file ld: in /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libgcc_s.1.dylib, missing required architecture ppc in file for architecture ppc collect2: ld returned 1 exit status lipo: can't open input file: /var/folders/qT/qTRms9cJHNqoYnbs9+TwVk+++TI/-Tmp-//ccMsnFzZ.out (No such file or directory) error: Command "g++ -arch i386 -arch ppc -isysroot /Developer/SDKs/MacOSX10.4u.sdk -g -bundle -undefined dynamic_lookup build/temp.macosx-10.3-fat-2.5/src/ft2font.o build/temp.macosx-10.3-fat-2.5/src/mplutils.o build/temp.macosx-10.3-fat-2.5/CXX/cxx_extensions.o build/temp.macosx-10.3-fat-2.5/CXX/cxxsupport.o build/temp.macosx-10.3-fat-2.5/CXX/IndirectPythonInterface.o build/temp.macosx-10.3-fat-2.5/CXX/cxxextensions.o -L/usr/local/lib -L/usr/lib -lfreetype -lz -lstdc++ -lm -o build/lib.macosx-10.3-fat-2.5/matplotlib/ft2font.so" failed with exit status 1 Macintosh:matplotlib jdhunter$