Problems installing mpi4py on Mac OS X Lion

[Per Nielsen]

Hi all

I have problems installing mpi4py. I get the following output:

mac:~ per$ sudo pip install mpi4py

Downloading/unpacking mpi4py

  Downloading mpi4py-1.3.tar.gz (982Kb): 982Kb downloaded

  Running setup.py egg_info for package mpi4py

    

Installing collected packages: mpi4py

  Running setup.py install for mpi4py

    MPI configuration: [mpi] from 'mpi.cfg'

    checking for library 'mpe' ...

    Compiling with an SDK that doesn't seem to exist: /Developer/SDKs/MacOSX10.5.sdk

    Please check your Xcode installation

    gcc -fno-strict-aliasing -fno-common -dynamic -DNDEBUG -g -O3 -arch x86_64 -isysroot /Developer/SDKs/MacOSX10.5.sdk -c _configtest.c -o _configtest.o

    cc1: error: unrecognized command line option "-arch"

    failure.

I have very recently installed the newest Xcode from the App Store (and the command line tools through the Preferences menus), which might have caused the problem, see this thread:

http://stackoverflow.com/questions/9539449/developer-directory-is-missing-on-lion-xcode-4-3

I ran:

sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer/

to get macports to work (something I have not done before) and I am using the macports gcc:

mac:~ per$ port select gcc

Available versions for gcc:

gcc42

llvm-gcc42

mp-gcc45 (active)

none

I realize that this probably has nothing to do with mpi4py, but is related to my Mac OS X setup, however someone here might have encountered this problem or seen it on some other mailinglist. I am running the latest EPD distribution of python.

Anyone? :)

Cheers,

Per

[Per Nielsen]

Hi again,

I got help to solve my problem on the qutip discussion board:

https://groups.google.com/forum/?fromgroups#!topic/qutip/FOAiHC9DewU

Thanks anyway :)

Cheers,

Per