[ros-users] crash importing opencv on mac python

Joachim Bean joachimbean at gmail.com
Mon May 10 16:59:51 UTC 2010

It's usually more up-to-date than the version that's installed with Mac OS X.

-- Joachim

On May 10, 2010, at 12:56 PM, Nicholas Butko <nbutko at ucsd.edu> wrote:

> Out of curiosity, what is the reason why ROS prefers MacPorts' version of Python to the OSX distribution?
> Sorry if this has been discussed before. 
> --Nick 
> On May 10, 2010, at 8:19 AM, Brian Gerkey wrote:
>> On Mon, May 10, 2010 at 7:58 AM, Dan Lazewatsky
>> <lazewatskyd at cse.wustl.edu> wrote:
>>> That's what I figured. Any idea how to tell OpenCV to build with a
>>> different version of Python?
>> If memory serves, I did it in the manner recommended in the wiki
>> (http://www.ros.org/wiki/ROS/Installation/OSX):
>> sudo ln -s /opt/local/Library/Frameworks/Python.framework /Library/Frameworks/
>> The intent is to make the compiler prefer the MacPorts installation of
>> Python when it's given '-framework Python'.  The note below that
>> command indicates that we don't believe it to be the right solution:
>> "Note: The symlink step above can fail if you have a system
>> installation of a Python framework (which can happen with more recent
>> versions of OS X). Also, this is probably not the right way to adjust
>> the way that frameworks are located. We invite advice and ideas from
>> OS X users on this issue."
>> A bit of googling suggests the use the DYLD_FRAMEWORK_PATH environment
>> variable to change the linker's search path (see the man page for
>> dyld).  If you can make this work (e.g., setting
>> DYLD_FRAMEWORK_PATH=/opt/local/Library/Frameworks before building
>> OpenCV), please update the ROS OSX installation page.
>>    brian.
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