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.
Related
since few days, I'm not able to use FSharp Interactive interpreter(Alt + Enter), it's giving me this message:
*Failed to spawn FSI, please ensure it's in PATH*
also, if I run the script, it give me connect ENONNREFUSED 127.0.0.1.8397
I'm using:
- Ubuntu 16.04
- Visual Studio Code 1.28.2
- Ionide-sharp 3.28.0
anyone have an idea to fix this?
Thanks in advance
I think the main cause is the last update done. I have made a rollback and now everything is back to normal:
remove ionide-fsharp from VS code
click on https://github.com/ionide/ionide-vscode-fsharp/releases/download/3.27.0/Ionide-fsharp-3.27.0.vsix to download previous version of ionide (v 3.27.0)
unzip the file. once the file is unziped, you will have 2 text files and a folder named extension. Rename that folder ionide.ionide-fsharp-3.27.0
on your terminal, type:
cd ~/.vscode
cd extensions/
mv /home/####/Downloads/Ionide-fsharp-3.27.0.vsix_FILES/ionide.ionide-fsharp-3.27.0 . (don't forget the dot at the end to move the folder to the new location )
it should add ionide.ionide-fsharp-3.27.0 into VS Code extensions
you need to turn off auto-update in VS Code (in VS Code, in the bottom left conner, click on Setting icon > click on Settings > in the field Search setting, type update and search, you should then search in the result for Extensions: Auto Update)
You can fix this just by installing .NET Core SDK from this link https://www.microsoft.com/net/learn/dotnet/hello-world-tutorial
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.
I was following a tutorial for object detection using opencv, I did it step by step but when I run it, I got this error -
The program can't start because opencv_244d.dll is missing from your computer.
Try reinstalling the program to fix this problem.
I don't know what is the problem because I can see this dll in opencv libraries, I have added the following to the input dependencies:
opencv_core244d.lib
opencv_imgproc244d.lib
opencv_highgui244d.lib
opencv_ml244d.lib
opencv_video244d.lib
opencv_features2d244d.lib
opencv_calib3d244d.lib
opencv_objdetect244d.lib
opencv_contrib244d.lib
opencv_legacy244d.lib
opencv_flann244d.lib
This is still not working, what can I do?
You can find the required dll files into the bin folder (that is next to lib folder where the .lib files are located), and you have two options:
1) copy the required dlls into the same folder with your application //this is a little better because it kind of prepares you for when you'll need to deploy your application on systems that don't have opencv installed (for then don't forget to build the release version of your application)
or
2) add to the Path in the Environment Variables your path to that bin folder (be carefull that the path in there are separated by ; )
I would advise you to build the OpenCV libraries from source so that you can have a custom installation specific for your system (this is always better since it gives you the option of using what you want/need and also the performance is better since the libs are custom-made for your system).
OpenCV does not contain a library file called "opencv_244d.dll".
Check all your dependencies and their names so you don't have any misspelled names. All the names are something like "opencv_name244d.dll" such as "opencv_photo244d.dll".
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'm trying to install OpenCV on Windows. Following are how I installed it:
Download OpenCV 2.4.2.exe from sourceforge.
unarchived it.
open Eclipse CDT.
Add C:/opencv/include/opencv to "Includes"
Add opencv_highgui, opencv_core, opencv_ml... to "Libraries"
Create a small project and compiled it.
The compiler complained about "opencv2/core/core_c.h：No such file or directory"...
I remember that when I install OpenCV on Ubuntu, I did compiled the project (it took quite a bit of time). Do I have to do the same thing on Windows? Or is any other thing causing this error?
Thanks.
You should add correct directories to includes.
Since you added C:/opencv/include/opencv, there is no way for compiler to find C:/opencv/include/opencv2/core/core.h.
I believe you should enter C:/opencv/include/ to includes directories as well.