Cannot generate matlab bindings in OpenCV

asked 2015-03-05 07:03:29 -0600

krammer
96 ●1 ●3 ●9

updated 2015-03-05 07:05:02 -0600

I am trying to compile OpenCV on 64bit ubuntu system having Matlab R2014b(64bit) with gcc 4.9.x.

I use the following cmake parameters:

cmake -D CMAKE_BUILD_TYPE=Release -D CMAKE_INSTALL_PREFIX=/home/siddharth/opencv-master/install -D OPENCV_EXTRA_MODULES=/home/siddharth/opencv-master/opencv_contrib-master -D MATLAB_ROOT_DIR=/home/siddharth/matlab -D WITH_IPP=off ..

But during the configuration, I get the following message:

Matlab: -- mex: /home/siddharth/matlab/bin/mex -- Compiler/generator: Not working (bindings will not be generated)

I have checked that I can compile mex files from within Matlab. All other modules are generated in the build directory except the matlab bindings. I have also seen the question: Bindings to access openCV from MATLAB do not generate. But no working solution is there.

I have put the output of cmake at http://pastebin.com/rWcttkTU

How can I proceed now ? (FYI, I don't have Computer Vision Toolbox in Matlab if that matters)

EDIT: I report same behaviour with both OpenCV-3.0.0 beta and opencv-master(from github).

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there's current refactoring of the general wrapper mechanisms going on, it seems like the matlab ones were temporarily disabled

(i guess, you will have to wait a few days, and watch the github repo)

berak ( 2015-03-05 07:40:09 -0600 )edit

Or you clone the 3.0.0 branch which already contained the wrappers but with possibly alot of bugs :D

StevenPuttemans ( 2015-03-05 07:49:07 -0600 )edit

Is there anybody around who recently (since January 2015) was able to build the openCV 3 beta code and matlab bindings from source code?

talby ( 2015-04-03 10:02:26 -0600 )edit

@StevenPuttemans: Hi, I also use branch 3.0.0-dev, if it contains a lot of bugs, but bindings should not be a problem. So sad, I cannot build it also.

beahacker ( 2015-06-02 22:30:41 -0600 )edit

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could you do other potential matlab users a favour, and make a short experiment ?

remove the rst_parser.py file for a moment
replace gen_matlab.py with this version (that does not rely on the rst parser)
try to build.

see, in the long run, the rapper script has to get fixed, so let's try that, instead of doing workarounds.

berak ( 2015-06-03 00:20:46 -0600 )edit

@berak: Hi, I did what you said, it passed Cmake step, but cannot build. The error log: [ 13%] Generating Matlab source files [ 13%] Built target opencv_test_ximgproc_pch_dephelp [ 13%] Built target pch_Generate_opencv_hal usage: gen_matlab.py [-h] [--jinja2 JINJA2] [--hdrparser HDRPARSER] [--moduleroot [MODULEROOT [MODULEROOT ...]]] [--modules [MODULES [MODULES ...]]] [--extra [EXTRA [EXTRA ...]]] [--outdir OUTDIR] gen_matlab.py: error: unrecognized arguments: --rstparser /home/beahacker/Downloads/opencv-new/opencv/modules/java/generator make[2]: * [modules/matlab/generate.proxy] Error 2 make[1]: [modules/matlab/CMakeFiles/opencv_matlab_sources.dir/all] Error 2 make[1]: ** Waiting for unfinished jobs....

beahacker ( 2015-06-06 03:21:25 -0600 )edit

a lot of thanks for trying !!

(ok, either the script calling gen_matlab.py has to get fixed too(remove the --rstparser arg) or the argument will have to go back into the gen_matlab.py)

(no real matlab here, unfortunately, so i could only test from console

berak ( 2015-06-06 03:40:18 -0600 )edit

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Cannot generate matlab bindings in OpenCV

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