zen fails to build under python 2.7.1 on OS X and Linux

[mmisiewicz]

Fails with error during compile of cython generated C code.

Environment: Ubuntu 10.04.4 LTS and OS X 10.7.4, python 2.7.1, Cython 0.16 (current, also tried with 0.15 and same problem occured).

Trimed sample output from python2.7 setup.py build on Ubuntu:

running build_ext
building 'zen.graph' extension
gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -I/usr/local/lib/python2.7/site-packages/numpy-1.6.1-py2.7-linux-x86_64.egg/numpy/core/include -I/usr/local/include/python2.7 -c zen/graph.c -o build/temp.linux-x86_64-2.7/zen/graph.o
gcc: zen/graph.c: No such file or directory
gcc: no input files
error: command 'gcc' failed with exit status 1

Trimed sample output from python2.7 setup.py build on OS X:

running build_ext
building 'zen.graph' extension
creating build/temp.macosx-10.6-intel-2.7
creating build/temp.macosx-10.6-intel-2.7/zen
gcc-4.2 -fno-strict-aliasing -fno-common -dynamic -arch i386 -arch x86_64 -g -O2 -DNDEBUG -g -O3 -I/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy/core/include -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c zen/graph.c -o build/temp.macosx-10.6-intel-2.7/zen/graph.o
i686-apple-darwin11-llvm-gcc-4.2: zen/graph.c: No such file or directory
i686-apple-darwin11-llvm-gcc-4.2: no input files
i686-apple-darwin11-llvm-gcc-4.2: zen/graph.c: No such file or directory
i686-apple-darwin11-llvm-gcc-4.2: no input files
lipo: can't figure out the architecture type of: /var/folders/9k/pcgvk9rd7bgcmnt3v4s_yt940000gn/T//ccxb8GTK.out
error: command 'gcc-4.2' failed with exit status 1