RE: Using OpenCV in Octave for Windows

[Tatsuro MATSUOKA]

Hello

--- Hennecke Marcus  wrote:

> Wow, this list is great! Thanks for the quick replies and sorry for not 
> getting back sooner, I
> was actually out of the city.
> 
> > -----Original Message-----
> > From: Benjamin Lindner [mailto:address@hidden 
> > Sent: Tuesday, June 01, 2010 2:44 PM
> > > I have a quick look at
> > > http://sourceforge.net/projects/opencvlibrary/files/.
> > > 
> > > Did you install this ?
> > > OpenCV-2.1.0-win32-vs2008.exe
> 
> Thank you very much for looking into this! 
> 
> Yes, this is the installer I used.
> 
> > I had a quick glance on OpenCV-2.1.0-win32-vs2008.exe, but 
> > I'm not familiar with cmake, and couldn't quite find out how 
> > the octave wrappers are supposedly being built (I thought I 
> > might just manually do this).
> > They provide dlls, import libs and include files, but all in 
> > msvc style.
> > [...]
> > I also tried recreating the nnn_wrap.cpp files from the 
> > opencv-2.1.0 sources using swig, but here swig stops with a 
> > syntax error in its own libraries/headers ?!?
> 
> Wow, thanks for trying all of this! Thus far I had only searched the Internet 
> and various
> mailing lists and support forums but not yet actually tried compiling it. I 
> was hoping I could
> get by with precompiled binaries.
 
> > From: Tatsuro MATSUOKA [mailto:address@hidden 
> > Sent: Tuesday, June 01, 2010 12:07 PM
> > 
> > If so, you should build the OpenCV from source using the 
> > MinGW GCC-4.4.0 (Because the current
> > octave/mingw32 built by GCC-4.4.0.

> > 
> > See
> > http://opencv.willowgarage.com/wiki/MinGW

I have tried to build OpenCV using the Cmake for Windows.

I have used OpenCV-2.1.0-win.zip, which includes build kits using the cmake.
I have found the following in the CMakeLists.txt in the source root folder.

set(BUILD_OCTAVE_SUPPORT OFF CACHE BOOL "Build with Octave support")

I have modified  'BUILD_OCTAVE_SUPPORT OFF' to 'BUILD_OCTAVE_SUPPORT ON'.

I have used -G "Msys Makefile" option on the Msys prompt in the following
Note that symbol '#' is comment character.   

************************
# add cmake path
export PATH=$PATH:/c/Programs/cmake-2.8.1-win32-x86/bin 
# I have put cmake source root D:\usr\Tatsu\mingwhome\tools\OpenCV\OpenCV\OpenCV
# and "D:\usr\Tatsu\mingwhome\tools\OpenCV\OpenCV-2.1.0-build" is used for 
build folder 
cd "D:\usr\Tatsu\mingwhome\tools\OpenCV\OpenCV-2.1.0-build"
cmake -G "MSYS Makefiles" ../OpenCV-2.1.0
***********************

I have found in the OpenCV-2.1.0-build/CMakeCache.txt

########################
# EXTERNAL cache entries
########################
 :
 :
//Build with Octave support
BUILD_OCTAVE_SUPPORT:BOOL=ON

It seemed to get the octave support.
The 'Makefile' for the Msys environments generated.
After the  I execute 'make' command at the Msys promt

However, unfortunately it was failed the sjlj exception handling in the 
building third party
dependencies.   

The current the GCC-4.4.0 and 4.5.0 on the MinGW site use the dwarf2 exception 
handling but not the 
sjlj handling.  

The further modification might be required in the CMakeLists.txt.  

The above are what i have tried the yesterday night.  Perhaps to solve the 
exception handling problem
is not easy task.  
Please ask further in the OpenCV ML or forum. 

Regards

Tatsuro

> This is a good idea. I will try it and report back.
> 
> Thanks again!
> 
> Best regards,
> Marcus
> 
> _______________________________________________
> Help-octave mailing list
> address@hidden
> https://www-old.cae.wisc.edu/mailman/listinfo/help-octave
> 


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