matplotlib install error, gcc suspected -


i trying install matplotlib on macbook pro 10.8.3. scientific packages (python, qgis, , numerous others) installed homebrew. pip install matplotlib fails following error:

ld: library not found -lgcc_ext.10.5 collect2: error: ld returned 1 exit status error: command 'c++' failed exit status 1

i can't figure out lgcc_ext.10.5 looking for. i've seen other questions, such the 10.8 install failure, error seems different. happens under pip install or installing through git clone...

downloading/unpacking matplotlib   downloading matplotlib-1.2.1.tar.gz (38.4mb): 38.4mb downloaded   running setup.py egg_info package matplotlib     basedirlist is: ['/usr/local/', '/usr', '/usr/x11', '/opt/local']     ============================================================================ building matplotlib             matplotlib: 1.2.1                 python: 2.7.5 (default, may 21 2013, 10:35:49)  [gcc 4.2.1                         compatible apple llvm 4.2 (clang-425.0.24)]               platform: darwin  required dependencies                  numpy: 1.6.2              freetype2: 16.0.10  optional backend dependencies                 libpng: 1.5.14                tkinter: tkinter: 81008, tk: 8.5, tcl: 8.5             pkg-config: looking pygtk-2.0 gtk+-2.0                         * package libffi not found in pkg-config                         * search path. perhaps should add directory                         * containing `libffi.pc' pkg_config_path                         * environment variable package 'libffi', required                         * 'pygobject-2.0', not found                         * may need install 'dev' package(s)                         * provide header files.                   gtk+: no                         * not find gtk+ headers in of                         * '/usr/local/include', '/usr/include',                         * '/usr/x11/include', '/opt/local/include',                         * '/usr/local/include', '/usr/include',                         * '/usr/x11/include', '.'        mac os x native: yes                     qt: no                    qt4: qt: 4.8.4, pyqt4: 4.10.1                 pyside: qt: 4.8.4, pyside: 1.1.2                  cairo: 1.10.0  optional date/timezone dependencies               dateutil: matplotlib provide                   pytz: matplotlib provide  optional usetex dependencies                 dvipng: 1.14            ghostscript: 9.07                  latex: 3.1415926                pdftops: 0.22.4  [edit setup.cfg suppress above messages] ============================================================================

my full output long, number of warnings don't know related such as:

cc -dndebug -g -fwrapv -o3 -wall -i/usr/x11/include -i/usr/x11/include/freetype2 -i/usr/x11/include/libpng12 -dpy_array_unique_symbol=mpl_array_api -dpycxx_iso_cpp_lib=1 -i/usr/local/include -i/usr/include -i/usr/x11/include -i/opt/local/include -i/library/python/2.7/site-packages/numpy-override/numpy/core/include -i/usr/local/cellar/freetype/2.4.11/include/freetype2 -i/usr/local/cellar/freetype/2.4.11/include -i/usr/local/include -i/usr/include -i/usr/x11/include -i. -i/usr/local/cellar/python/2.7.5/frameworks/python.framework/versions/2.7/include/python2.7 -c cxx/cxxsupport.cxx -o build/temp.macosx-10.8-x86_64-2.7/cxx/cxxsupport.o  in file included cxx/cxxsupport.cxx:40:  in file included cxx/python2/cxxsupport.cxx:38:  in file included ./cxx/objects.hxx:40:  ./cxx/python2/objects.hxx:1133:23: warning: implicit conversion of null constant 'int' [-wnull-conversion]              , offset( null )                      ~ ^~~~                        0


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