I would like to use OpenCV with CodeBlocks. But I don't know to configure CodeBlocks about "Project build options". I need to precise where are the headers, and functions of openCV.
Firstly I've tried to follow this tutorial : http://kevinhughes.ca/tutorials/opencv-install-on-windows-with-codeblocks-and-mingw/ But I had some problems in the step 4 with the configuration of makefiles. In fact, I am not very sure that I need to use cmake in order to read opencv functions.
Could you help me to configure build options ? I think I need to add "C:\opencv\build\include" about compiler on Search Directories, and about linker, what should I add ?
How add the librairy on CodeBlocks ?
Thank you
In fact CMakeLists.txt is present here : ..\opencv\sources\CMakeLists.txt
I thought CMake would have searched. Then, I use correctly Cmake and he has builded OpenCV. I don't use cygwin, I use the shell of windows. So, after that, I've tried to build the exemple of opencv code in this tutorial, and it works !
Now, when I try to build a project already coded, I don't succeed. In fact, it's a code made by an other person, it use OpenCV and C++. And there is also Java code for Android. But I would like to build and execute only C++ code.
I chose the same settings for OpenCV, but how could I know what I should add in "compiler" and "linker" section ?
Thank you for your help.
Try to change your source directory to C:\opencv\sources and see if that works.
Related
I like the help which is provided by --help-module. Here you can read how to add new libraries and which variables are being set. Because I only occasionally create a framework from scratch I only add libraries once and forget how to add them for the next time.
So, if I want to create a new project I only have to make a quick search with --help-module and the package I want to use. Unfortunately OpenCV is not in this list. So, I am curious if there is a way to add a help for Opencv?
TLTR; I want to add a help for OpenCV. Where I can refresh my mind on how to find opencv and how link against it etc.
I doubt this can be done.
The help module is generated from the RST CMake documentation. You are not supposed to add it there. It should be part of the documentation from the project which provides the module.
I am trying to use codeblocks to compile the code available here
The thing is every time I try to build and run, I run into the following error:
|/.../head_pose_estimation/opencv2/core/core.hpp|48|fatal error: opencv2/core.hpp: No such file or directory
Does anyone know how I can fix this? Thank you!
You do not have the pre-built (compiled) version of OpenCV, what you currently have are the source files. If you want to do something special with OpenCV (Target/GPU SUpport etc) then you will need to build the framework using an appropriate guide.
If however you simply want to use OpenCV in the most common way then download the pre-built libraries from the OpenCV.org website.
NOTE:
If you are using OpenCV with MinGW compiler, I do not remember if the pre-built is actually pre-built for MinGW. (I dont think they do) In this case you will HAVE to built the libraries. You can find a guide here
Hello everyone;
i had opencv 2.2 on my vs2010, and i wanted to update so i went to opencv site and:
i've downloaded OpenCV for Windows (ver 2.4.6)
i've extracted it to c:\opencv2.4
i've set the Environment Variable as doc said here: http://docs.opencv.org/doc/tutorials/introduction/windows_install/windows_install.html#windowssetpathandenviromentvariable
( i didnt know what is "PATH EDITOR" so i've just changed Environment variables)
i made property sprite sheets as opencv doc said here: http://docs.opencv.org/doc/tutorials/introduction/windows_visual_studio_Opencv/windows_visual_studio_Opencv.html#windows-visual-studio-how-to
5.but Doc Was Old, and there was no "include" folder in OpenCV2.4/opencv/build/x64/vc10 so I did set include Directory to OpenCV2.4/opencv/build/include in My property sprite sheet.
everything seems true and VS detect include libraries But
VS2010 throw following error when i want to Build the solution:
1>LINK : fatal error LNK1104: cannot open file 'opencv_core231d.lib'
Strange thing is there is no "opencv_core231d.lib" File in c:\opencv2.4 at all!!!
:(
what is the problem?
This is a Linker error, so make sure you are trying to link the correct libraries.
I would suggest to use CMake, which definitely simplifies configuring projects, specially those having dependencies like OpenCV (you can take a look to the OpenCV documentation, or any blog explaining the steps: http://marcosnietoblog.wordpress.com/2011/11/19/opencv-for-windows-easy-installation-using-cmake/ )
By the way, I use to have several versions of opencv on the same folder:
C:\OpenCV\opencv2.4.3
C:\OpenCV\opencv2.4.6
...
So I can easily switch within CMake setting the OpenCV_DIR.
opencv_core231d.lib is a debug version, all the *d.lib and *d.dll files in openCV are with debug symbols.
It is likely that the pre-built release you downloaded doesn't contain debug ones.
either download te source and build both debug and release. Or, if you don't care how opencv works internally, just change the linker flags to use the same lib names with the d
edit. or of course if you donwloaded opencv 2.4.6 the file would be opencv_core246d.lib
I am a newbie to OpenCV and I am trying to use it with DevC++. Although I am aware I could use Visual Studio for the same , I would still like to use DevC++.
The OpenCV Wiki-how seems obsolete with this information. Can you please tell me the steps with which I can modify the Compiler Options in DevCpp so that I may kick-off with OpenCV.
Any help is highly appreciated ...
Also, OpenCV wiki directs me to paste the following code in the Compiler Options ,
-L"C:\Program Files\OpenCV\lib" -lcxcore -lcv -lcvaux -lhighgui -lml -lcvcam
Sadly , I did not find the lib folder in my OpenCV directory..
I am trying to compile/build OPenCV 2.3 with the help of CMake/Mingw. I got the source from there site, superpack as the call their package. I extracted it and placed it in c:\opencv2.3.
I point Cmake to c:\OPencv2.3\opencv for the source and c:\opencvbuild for the installation folder. Click configure, set a couple of options (I think that I set WITH_QT,and BUILD_EXAMPLES if I remember correctly) click on Advanced, and checked ENABLE_SOLUTION_FOLDERS.
Click Configure again, then Generate.
Go to c:\opencvbuild and from there (command prompt). I run mingw32-make, followed by mingw32-make install. No errors.
But, c:\opencvbuild does not show no .lib files, and not .sln files either....What am I doing wrong ?
Thank you very much,
Andres
PS: This is the CMakeCache file, that was generated:
http://dl.dropbox.com/u/35186952/CMakeCache.txt
Instead of copy-pasting, here: http://theroundedengineer.blogspot.com/2011/07/opencv-23-for-vs-2008-from-source.html
Hope that helps.