Error when building OpenCV on my mac: 'Py_ssize_t' issues

Question

I've been following the instructions here: http://opencv.willowgarage.com/wiki/Mac_OS_X_OpenCV_Port, and have just finished the make -j8 step. Although the make completes to 100%, I am getting errors

make[2]: *** [interfaces/python/CMakeFiles/cvpy.dir/cv.o] Error 1
make[1]: *** [interfaces/python/CMakeFiles/cvpy.dir/all] Error 2
make: *** [all] Error 2

Specific errors I see in the stack trace are all from a file called cv.cpp:

/other/open_cv/opencv/opencv/interfaces/python/cv.cpp:18: error: ‘Py_ssize_t’ does not    name a type
/other/open_cv/opencv/opencv/interfaces/python/cv.cpp:206: error: ‘Py_ssize_t’ does not name a type
/other/open_cv/opencv/opencv/interfaces/python/cv.cpp: In function ‘PyObject* iplimage_tostring(PyObject*, PyObject*)’:
/other/open_cv/opencv/opencv/interfaces/python/cv.cpp:282: error: ‘what_size’ was not declared in this scope
/other/open_cv/opencv/opencv/interfaces/python/cv.cpp: In function ‘PyObject* cvmat_tostring(PyObject*, PyObject*)’:
/other/open_cv/opencv/opencv/interfaces/python/cv.cpp:425: error: ‘what_size’ was not declared in this scope

(which continues for a long while). I followed all of the steps and am not sure where I am going wrong. Any help for installing open cv on my mac (Snow Leopard)?

Thanks!

Answer 1

I had an old version of python (MacPython was overriding the default python version). Just get rid of MacPython, and you are good to go.

Answer 2

Make sure you have the most recent svn from the repository.
I could not get the tar ball to build but the svn check out built correctly
"https://code.ros.org/svn/opencv/trunk/opencv"
You will also need the OpenCV.framework for xcode to build the app with.
I found this page to have the best info to get openCV working on an Mac
http://opencv.willowgarage.com/wiki/Mac_OS_X_OpenCV_Port
So far I have only got this to work on an intel based Mac.

Answer 3

I have also the same error, Finally after 3 days of debuging on this, how i can get rid of the old MacPython, i have commented the lines that refers to it in the ./bash_profile, i did also used python_select python26 to point to original python distribution I am so BUZZED by OPENCV with python bindings. it has almost consumed my powers . I have also the last version from the subversion repository.

any solution to that guys, please help !!!

Answer 4

Were you able to fix that?