python c extension, problems with dlopen on mac os

Posted by Jason Sundram on Stack Overflow See other posts from Stack Overflow or by Jason Sundram
Published on 2010-05-07T16:46:15Z Indexed on 2010/05/07 16:48 UTC
Read the original article Hit count: 482

Filed under:

python

|

python-c-extension

|

setup.py

|

dlopen

I've taken a library that is distributed as a binary lib (.a) and header, written some c++ code against it, and want to wrap the results up in a python module.

I've done this here.

The problem is that when importing this module on Mac OSX (I've tried 10.5 and 10.6), I get the following error:

dlopen(/Library/Python/2.5/site-packages/dirac.so, 2): Symbol not found: _DisposePtr
  Referenced from: /Library/Python/2.5/site-packages/dirac.so
  Expected in: dynamic lookup

This looks like symbols defined in the Carbon framework aren't being properly resolved, but I'm not sure what to do about that. I am supplying -framework Carbon to distutil.core.Extension's extra_link_args parameter, so I'm not sure what else I should do.

Any help would be much appreciated.

© Stack Overflow or respective owner

Related posts about python

unmet dependencies in Ubuntu 12.04

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I tried today to install a dvb-card on my Ubuntu 12.04 (Linux blauhai-linux 3.2.0-25-generic #40-Ubuntu SMP Wed May 23 20:30:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux ). The installation failed with an error. After that, i tried to install python (it was already installed but i got this error): linux:~$… >>> More
How can I get sikuli-ide to work?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I installed sikuli-ide with sudo apt-get install sikuli-ide Everything was fine until I tried to start it from the terminal. I typed sikuli-ide But the only response I got was [info] locale: en_US The application was not started, furthermore there is no desktop file and sikuli-ide does not… >>> More
Getting PATH right for python after MacPorts install

as seen on Super User - Search for 'Super User'
I can't import some python libraries (PIL, psycopg2) that I just installed with MacPorts. I looked through these forums, and tried to adjust my PATH variable in $HOME/.bash_profile in order to fix this but it did not work. I added the location of PIL and psycopg2 to PATH. I know that Terminal is… >>> More
call python with system() in R to run a python script emulating the python console

as seen on Stack Overflow - Search for 'Stack Overflow'
I want to pass a chunk of Python code to Python in R with something like system('python ...'), and I'm wondering if there is an easy way to emulate the python console in this case. For example, suppose the code is "print 'hello world'", how can I get the output like this in R? >>> print… >>> More
Python - Calling a non python program from python?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I am currently struggling to call a non python program from a python script. I have a ~1000 files that when passed through this C++ program will generate ~1000 outputs. Each output file must have a distinct name. The command I wish to run is of the form: program_name -input -output -o1 -o2… >>> More

Related posts about python-c-extension

python c extension, problems with dlopen on mac os

as seen on Stack Overflow - Search for 'Stack Overflow'
I've taken a library that is distributed as a binary lib (.a) and header, written some c++ code against it, and want to wrap the results up in a python module. I've done this here. The problem is that when importing this module on Mac OSX (I've tried 10.5 and 10.6), I get the following error: dlopen(/Library/Python/2… >>> More
How can I assert from Python C code?

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm writing a Python class in C and I want to put assertions in my debug code. assert.h suits me fine. This only gets put in debug compiles so there's no chance of an assert failure impacting a user of the Python code*. I'm trying to divide my 'library' code (which should be separate to the code… >>> More
How to compile OpenGL with a python C++ extension using distutils on Mac OSX?

as seen on Stack Overflow - Search for 'Stack Overflow'
When I try it I get: ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/cscalelib.so, 2): Symbol not found: _glBindFramebufferEXT Referenced from: /Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/cscalelib.so Expected… >>> More
Profiling python C extensions

as seen on Stack Overflow - Search for 'Stack Overflow'
I have developed a python C-extension that receives data from python and compute some cpu intensive calculations. It's possible to profile the C-extension? The problem here is that writing a sample test in C to be profiled would be challenging because the code rely on particular inputs and data structures… >>> More
Easiest way of unit testing C code with Python

as seen on Stack Overflow - Search for 'Stack Overflow'
I've got a pile of C code that I'd like to unit test using Python's unittest library (in Windows), but I'm trying to work out the best way of interfacing the C code so that Python can execute it (and get the results back). Does anybody have any experience in the easiest way to do it? Some ideas include: Wrapping… >>> More