lipo: can't figure out the architecture type of: /var/folders/

I tried installing lxml on Mac OSX Snowleopard and keep getting the error:

lipo: can't figure out the architecture type of: /var/folders/

I did install XCode with 10.4 SDK support and I changed gcc 4.2 to 4.0.1

Any clues??? Python 2.6.1 with Leopard 1.6.7..

running install
running bdist_egg
running egg_info
writing src/lxml.egg-info/PKG-INFO
writing top-level names to src/lxml.egg-info/top_level.txt
writing dependency_links to src/lxml.egg-info/dependency_links.txt
reading manifest file 'src/lxml.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no files found matching 'lxml.etree.c' under directory 'src/lxml'
warning: no files found matching 'lxml.objectify.c' under directory 'src/lxml'
warning: no files found matching 'lxml.etree.h' under directory 'src/lxml'
warning: no files found matching 'lxml.etree_api.h' under directory 'src/lxml'
warning: no files found matching '*.html' under directory 'doc'
writing manifest file 'src/lxml.egg-info/SOURCES.txt'
installing library code to build/bdist.macosx-10.6-universal/egg
running install_lib
running build_py
running build_ext
building 'lxml.etree' extension
gcc-4.2 -fno-strict-aliasing -fno-common -dynamic -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch i386 -arch ppc -arch x86_64 -pipe -I/usr/include/libxml2 -I/System/Library/Frameworks/Python.framework/Versions/2.6/include/python2.6 -c src/lxml/lxml.etree.c -o build/temp.macosx-10.6-universal-2.6/src/lxml/lxml.etree.o -w -flat_namespace
i686-apple-darwin10-gcc-4.2.1: src/lxml/lxml.etree.c: No such file or directory
i686-apple-darwin10-gcc-4.2.1: no input files
powerpc-apple-darwin10-gcc-4.2.1: src/lxml/lxml.etree.c: No such file or directory
powerpc-apple-darwin10-gcc-4.2.1: no input files
i686-apple-darwin10-gc开发者_如何学Cc-4.2.1: src/lxml/lxml.etree.c: No such file or directory
i686-apple-darwin10-gcc-4.2.1: no input files
lipo: can't figure out the architecture type of: /var/tmp//ccCwMxyq.out
error: command 'gcc-4.2' failed with exit status 1

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you have an architecture problem for your python, Because of changes in Xcode 4 (dropping of support for the 10.4u SDK and gcc-4.0) it is not practical to build C extension modules with that Python on 10.7 Lion. Either use the Apple-supplied Python 2.7

/usr/bin/python2.7

Install the Python 2.7.3 Mac OS X 64-bit/32-bit x86-64/i386 Installer

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I was having the same issue while trying to install milk with Python 2.7. I was not able to get my problem solved with Ali Elouafiq's exact answer, but I was able to get milk installed using the systems Python 2.6.

So perhaps trying other versions of Python until in case it works is a cost effective approach.

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I found that compilation issues like these are easily avoided by installing python via brew. If brew isn't able to link the formula, just force it with:

brew link --overwrite python

See also: http://docs.python-guide.org/en/latest/starting/install/osx/