are you sure you need to specify -arch i386 -arch ppc and not only -arch 
ppc  ??
It seems that according to the log mentioning i386 here does not please 
the linker. Maybe try without it?

my 2 cents,
Johann

Ari Ehrmann wrote:
> Hey all,
>
> I've been having a lot of trouble installing matplotlib. I'm using a 
> macbook, on version 10.5.4 of Mac OS, intel processor (if that's 
> important). I've installed both numpy and scipy without problems, but 
> when I type this command to install matplotlib:
>
> CFLAGS="-Os -arch i386 -arch ppc" LDFLAGS="-Os -arch i386 -arch ppc" 
> python setup.py build
>
>
>
> I get this output:
>
>
>
>
> ============================================================================
> BUILDING MATPLOTLIB
>             matplotlib: 0.98.3
>                 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: 1.2.0.dev5513
>              freetype2: found, but unknown version (no pkg-config)
>
> OPTIONAL BACKEND DEPENDENCIES
>                 libpng: found, but unknown version (no pkg-config)
>                Tkinter: Tkinter: 50704, Tk: 8.4, Tcl: 8.4
>               wxPython: no
>                         * wxPython not found
>                   Gtk+: no
>                         * Building for Gtk+ requires pygtk; you must 
> be able
>                         * to "import gtk" in your build/install 
> environment
>                     Qt: no
>                    Qt4: no
>                  Cairo: no
>
> OPTIONAL DATE/TIMEZONE DEPENDENCIES
>               datetime: present, version unknown
>               dateutil: matplotlib will provide
>                   pytz: matplotlib will provide
>
> OPTIONAL USETEX DEPENDENCIES
>                 dvipng: no
>            ghostscript: /bin/sh: gs: command not found
>                  latex: no
>
> EXPERIMENTAL CONFIG PACKAGE DEPENDENCIES
>              configobj: matplotlib will provide
>       enthought.traits: no
>
> [Edit setup.cfg to suppress the above messages]
> ============================================================================
> running build
> running build_py
> copying lib/matplotlib/mpl-data/matplotlibrc -> 
> build/lib.macosx-10.3-fat-2.5/matplotlib/mpl-data
> copying lib/matplotlib/mpl-data/matplotlib.conf -> 
> build/lib.macosx-10.3-fat-2.5/matplotlib/mpl-data
> running build_ext
> building 'matplotlib.ft2font' extension
> g++ -arch i386 -arch ppc -isysroot /Developer/SDKs/MacOSX10.4u.sdk -g 
> -bundle -undefined dynamic_lookup -Os -arch i386 -arch ppc -Os -arch 
> i386 -arch ppc 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 -L/usr/X11R6/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/libstdc++.dylib, file is 
> not of required architecture
> ld: in 
> /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libstdc++.6.dylib, file 
> is not of required architecture for architecture i386
> collect2: ld returned 1 exit status
> ld warning: in 
> /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libstdc++.dylib, file is 
> not of required architecture
> ld: in 
> /Developer/SDKs/MacOSX10.4u.sdk/usr/local/lib/libstdc++.6.dylib, file 
> is not of required architecture for architecture ppc
> collect2: ld returned 1 exit status
> lipo: can't open input file: 
> /var/folders/S0/S0i2z-OAEtG1ZHpis54obU+++TM/-Tmp-//ccfhpaN5.out (No 
> such file or directory)
> error: command 'g++' failed with exit status 1
>
>
>
>
>
> Has anyone had this problem or know what's even going here? Any help 
> would be greatly appreciated.
>
> Thanks,
> Ari 
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>
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