I follow all the step which need to configure opencv with visual studio 2010 but when i run my application i am getting the following error
You should add OpenCV bin folder to your environmental path..
Assuming the mentioned DLL is present on your hard drive, VisualStudio doesn't know where to find it.
Try adjusting the working directory or the path, under Project Settings > Configuration Properties > Debug.
If you are sure that the file in question is actually present on your computer, then it's just that the file is in the wrong spot, or your directory is messed up. It is possible that said file is corrupted, or was not installed properly. Make sure that your directory is in order, make sure you have the file, and make sure it's in the place it's supposed to be. If the problem continues, try uninstalling and re installing your compiler. If that still doesn't work, you may be having a serious problem with your computer.
You are running into OpenCV dll issues, similar to here where I gave the following answer already.
Three ways to fix dll-related issues about OpenCV, also works for other dll related issues.
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).
add the dll path to Debugging Environment: Project –> Properties –> Configuration Properties –> Debugging –> Environment –> add dlls' paths here. The syntax is NAME=VALUE and macros can be used (for example, $(OutDir).
For example, to prepend C:\Windows\Temp to the PATH: PATH=C:\WINDOWS\Temp;%PATH%
Similarly, to append $(SolutionDir)\DLLS to the PATH: PATH=%PATH%;$(SolutionDir)\DLLS
add the dll path to Environment Variables (be careful that the path in there are separated by ;)
EDIT: Among the three methods, the first two will only work for this project (local) and the last one works for all projects in your PC (global).
Related
Intro
I have a CMake-based C++ project. Until now I build and ran the project via CLion. Everything worked fine until I tried to run the .exe-file directly (not via CLion).
Problem
When I navigate to the cmake build directory in order to start my program via the executable file, it fails with the following message in the popup: Cannot continue the code execution because libgcc_s so-1.dll was not found. Reinstalling the program may resolve the issue.
I have the following questions
If I interpret the error message correctly, then this dll is missing on my computer. So I ask myself, why does my program still work when I start it via the development environment (CLion), although the error message expressly states that the source code requires this dll?
Is it the fault of my application/source code that the error appears or rather the current state of my computer? If the former, how can I prevent this error from appearing for other users?
What is the best way to fix this error? It's obvious that I need to download this dll, but where is the best place to put it (which directory and environment variable to use on Window)?
Which source is trustworthy to download this dll? I don't want to download any malware under this dll-name.
Optional: What kind of library is that? What functionalities does it offer?
Additional information
I use CMake as my build tool, CLion as the IDE and MinGW as the compiler.
What I have did so far?
I made sure it still works through the IDE.
I found this dll does not exist in the MinGW installation folder.
I searched the web for more information. Unfortunately, there are only pages unknown to me that only offer the download of this dll. That doesn't satisfy me.
I found the cause of my problem: I had two MingGW installations on my machine. Once the installation that comes with CLion and a separate one. The latter did not have the required dll. However, CLion used its own installation, which in turn owns the DLL. So the solution was to remove the separate installation and include the path to the CLion installation's bin/ directory in the PATH environment variable.
This file is part of MinGW-w64 when using SEH as exception model (as opposed to Dwarf or SJLJ). You need to distribute the .dll files your .exe file(s) depend on in the same folder as the .exe file(s).
If you don't have that file, then you probably have been using libraries compiled with different versions of GCC/MinGW(-w64). I recommend building everything with the same compiler to ensure stable binaries.
Tools like Dependency Walker can help you figure out which .dll files your .exe file depends on.
Or use the command line tool copypedeps -r from https://github.com/brechtsanders/pedeps to copy the .exe files along with it's dependencies.
I'm working in VS 2019 on a C++ program in which I want to link into a bunch of 3rd party dlls, which are located in a folder separate from my executable. I don't want to copy all the dlls into the executable folder and have found the following solution.
Just like in the solution, I create a registry entry to define the keys with the information about the executable and the required path information to link to the DLLs:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\MyExe.exe
%Path2MyExe%\MyExe.exe (default key)
Path = %Path2DLLs%
The compilation from within VS works fine and when I start the generated executables from outside VS by (a) double clicking or (b) by using the command line, the 3rd party DLLs are found and the program is executed as expected.
However, when I invoke the debugger from within Visual Studio (c), execution is halted right away complaining that DLLs cannot be found.
I have checked the present working directory from within the code using _getcwd and for all options (a-c) it indicates the same directory.
So the question is: why does option (c) - debugging from within VS - not work?!
Cheers, Sebastian
It's probably because the executable that's launched when debugging is a vshost executable, not the generated executable for the project, and so it needs a separate entry in the registry.
If you want to stick with this kind of a build (highly not recommended), the easiest way to debug is to disable the hosting process:
Following the suggestion by drescherjm I tried to prepend the DLL directory to the PATH variable in "Configuration Properties -> Debugging -> Environment" following this solution.
However, this did not work for me. I also added the path directly in the system environment dialogue without success.
What did work in the end is setting the working directory under "Configuration Properties -> Debugging -> Working Directory" to point to the DLL folder. Now all three calling routes (a-c) work as expected.
Thanks to everyone for taking the time to help me out on this.
Sebastian
I am trying just a basic program with OpenCV with the following code:
#include "cv.h"
#include "highgui.h"
int main()
{
IplImage* newImg;
newImg = cvLoadImage("~/apple.bmp", 1);
cvNamedWindow("Window", 1);
cvShowImage("Window", newImg);
cvWaitKey(0);
cvDestroyWindow("Window");
cvReleaseImage(&newImg);
return 0;
}
When I run this, I get
The program can't start because
libcxcore200.dll is missing from your
computer. Try reinstalling the
program to fix this problem.
However, I can see this DLL. It exists. I have added the following to the input dependencies for my linker
C:\OpenCV2.0\lib\libcv200.dll.a
C:\OpenCV2.0\lib\libcvaux200.dll.a
C:\OpenCV2.0\lib\libcxcore200.dll.a
C:\OpenCV2.0\lib\libhighgui200.dll.a
What gives? I'm using visual studio 2008.
When I link the .dll files instead of .dll.a files, I get
fatal error LNK1107:invalid or corrupt
file: cannot read at 0x3F8
libcv200.dll
I followed instructions on http://opencv.willowgarage.com/wiki/VisualC%2B%2B_VS2010 but was still stuck on exactly the same problem, so here's how I resolved it.
Fetched MSVC 2010 express edition.
Fetched Win 32 OpenCV 2.2 binaries and installed in default location.
Created new project.
Project setup
Project -> OpenCV_Helloworld Properties...Configuration Properties -> VC++ Directories
Include Directories... add: C:\OpenCV2.2\include\;
Library Directories... add: C:\OpenCV2.2\lib;C:\OpenCV2.2\bin;
Source Directories... add:
C:\OpenCV2.2\modules\calib3d\src;C:\OpenCV2.2\modules\contrib\src;C:\OpenCV2.2\modules\core\src;C:\OpenCV2.2\modules\features2d\src;C:\OpenCV2.2\modules\flann\src;C:\OpenCV2.2\modules\gpu\src;C:\OpenCV2.2\modules\gpu\src;C:\OpenCV2.2\modules\highgui\src;C:\OpenCV2.2\modules\imgproc\src;C:\OpenCV2.2\modules\legacy\src;C:\OpenCV2.2\modules\ml\src;C:\OpenCV2.2\modules\objdetect\src;C:\OpenCV2.2\modules\video\src;
Linker -> Input -> Additional Dependencies...
For Debug Builds... add:
opencv_calib3d220d.lib;opencv_contrib220d.lib;opencv_core220d.lib;opencv_features2d220d.lib;opencv_ffmpeg220d.lib;opencv_flann220d.lib;opencv_gpu220d.lib;opencv_highgui220d.lib;opencv_imgproc220d.lib;opencv_legacy220d.lib;opencv_ml220d.lib;opencv_objdetect220d.lib;opencv_video220d.lib;
At this point I thought I was done, but ran into the problem you described when running the exe in debug mode. The final step is obvious once you see it, select:
Linker -> General ... Set 'Use Library Dependency Inputs' to 'Yes'
Hope this helps.
Just add C:\OpenCV2.0\bin into your PATH environment variable
or
When you install OpenCV,
Choose the option, Add OpenCV to the system PATH for current user which is not default one
Just for your information,after add the "PATH",for my win7 i need to reboot it to get it work.
In Visual Studio 2013 you need to add this to the Environment Variables and then Restart your pc. This is the path where .dll file located in.
I have had numerous problems with opencv and only succeded after a gruesome 4-6 months. This is the last problem I have had, but all of the above didn't work. What worked for me was just copying and pasting the opencv_core2*.dll (and opencv_highgui2*.dll which it will ask for since you included this as well) into the release (or debug folder - I'm assuming. Haven't tested this) folder of your project, where your application file is.
Hope this helps!
You just need to add the folder of the needed dll file (or files) to your system "Environment Variables" in "Path".
Your problem will 100% be resolved. I had this problem too.
just open the bin folder and copy and paste the .dll files to the folder you are working in..it should fix the problem
As to #Marc's answer, I don't think VC uses the path from the OS. Did you add the path to VC's library paths. I usually add the DLLs to the project and copy if newer on the build and that works very well for me.
you can find the opencv_core248 and other dlls in opencv\build\x86\vc12\bin folder. Just copy the dlls you require into system32 folder. And your app should start working in a flash ! Hope it helps.
This might be like resurrecting a dead horse. But just so it's out there, the reason why the answer to these types of questions to simply put dll's into the system32 folder is because that folder is in the os's system path.
It's actually best practice to provide the os with a path link.
With windows 10
open up file explorer
right click on "this pc" and select "properties"
Now in the "Control Panel\System and Security\System" window that comes up, click on "Advanced System Settings" from the left hand panel.
At the bottom of the next window, click on the "Environment Variables" button.
On the next window, there are two panels, the top one is for modifying variables to the current user, and the bottom panel is for modifying variables to the system. On the bottom panel, find the variable "Path" and click it to select it, then click on the "edit" button.
Here you can then create, edit, delete, or update the different paths for the system. For example, to add mingw32-make to the system so you can access that command via command prompt, click new, then paste in the path to the bin. Example path, "D:\Qt\Tools\mingw730_64\bin", no quotation marks nor additional whitespaces.
Click ok on all the windows so that the changes are saved, then reboot your computer for the changes to be loaded.
The ".a" at the end of your DLL files is a problem, and those are there because you didn't use CMAKE to build OpenCV 2.0. Additionally you do not link to the DLL files, you link to the library files, and again, the reason you do not see the correct library files is because you didn't use CMAKE to build OpenCV 2.0. If you want to use OpenCV 2.0 you must build it for it to work correctly in Visual Studio. If you do not want to build it then I would suggest downgrading to OpenCV 1.1pre, it comes pre-built and is much more forgiving in Visual Studio.
Another option (and the one I would recommend) is to abandon OpenCV and go with EmguCV. I have been playing with OpenCV for about a year and things got much easier when I switched to EmguCV because EmguCV works with .NET, so you can use a language like C# that does not come with all the C++ baggage of pointers, header files, and memory allocation problem.
And as for the question of 64bit vs. 32bit, OpenCV does not officially support 64bit. To be on the safe side open your project properties and change the "Platform Target" under the "Build" tab from "Any CPU" to "X86". This should be done any time you do anything with OpenCV, even if you are using a wrapper like EmguCV.
Copy all .dll from /bin in System32
Just copy the .dll files to C:\windows\system32\
No need to do any of that. It is a visual studio error.
just go here:
http://connect.microsoft.com/VisualStudio/Downloads/DownloadDetails.aspx?DownloadID=31354
and download the appropriate fix for your computer's OS
close visual studio, run the fix and then restart VS
The code should run without any error.
I'm working on a GIS application in C++ using Dev-C++, and to start for now I'm using the code given in the tutorial in Link
I got it to compile without errors or warnings, but when I try to run it I get the error "The program can't start because gdal201.dll is missing from your computer. Try reinstalling the program to fix this problem."
I was looking at another question with the similar problem and tried to search this dll on internet, but couldn't find it anywhere, and somebody mentioned to ignore the error, but I don't know how to do that.
Can anybody help me on what to do here?
Thanks in advance.
You need the DLL file(s) to be present either in the same directory as the executable, or in your Path variable for the system to be able to find them. I personally prefer setting Path. You might consider either adding GDAL_DIR\bin to your permanent Path by editing system or user environment variables, or else create a small batch file on the desktop which adds the directory to Path then starts devenv.exe if you need to manage several incompatible development environments for different projects.
(This has several advantages in my experience over copying the DLL files to the same directory as the executable: It's easier to manage dependencies by including all the necessary directories, as opposed to manually tracking down all the recursive dependencies. It's also easier to manage updates of the DLLs if you can just update the GDAL installation directory, or update Path or the batch file to a newer GDAL installation directory, rather than having to track down all the places you've copied the DLLs to or having to manage post-build scripts to copy the DLLs every time.)
(Of course, when it comes time to create a self-contained installer, it's going to be easiest to copy the dependent DLLs to the installer image directory before building the installer. Then something like CMake's BundleUtilities module can help in tracking down what DLLs need to be included.)
Usually I copy private DLLs to the output folder of the project, i.e. the same folder as the executable. For a commercial application, you may want to install the DLL, let the OS handle the management of it and use the Assemblies Manifest to help the loader find it.
I am trying just a basic program with OpenCV with the following code:
#include "cv.h"
#include "highgui.h"
int main()
{
IplImage* newImg;
newImg = cvLoadImage("~/apple.bmp", 1);
cvNamedWindow("Window", 1);
cvShowImage("Window", newImg);
cvWaitKey(0);
cvDestroyWindow("Window");
cvReleaseImage(&newImg);
return 0;
}
When I run this, I get
The program can't start because
libcxcore200.dll is missing from your
computer. Try reinstalling the
program to fix this problem.
However, I can see this DLL. It exists. I have added the following to the input dependencies for my linker
C:\OpenCV2.0\lib\libcv200.dll.a
C:\OpenCV2.0\lib\libcvaux200.dll.a
C:\OpenCV2.0\lib\libcxcore200.dll.a
C:\OpenCV2.0\lib\libhighgui200.dll.a
What gives? I'm using visual studio 2008.
When I link the .dll files instead of .dll.a files, I get
fatal error LNK1107:invalid or corrupt
file: cannot read at 0x3F8
libcv200.dll
I followed instructions on http://opencv.willowgarage.com/wiki/VisualC%2B%2B_VS2010 but was still stuck on exactly the same problem, so here's how I resolved it.
Fetched MSVC 2010 express edition.
Fetched Win 32 OpenCV 2.2 binaries and installed in default location.
Created new project.
Project setup
Project -> OpenCV_Helloworld Properties...Configuration Properties -> VC++ Directories
Include Directories... add: C:\OpenCV2.2\include\;
Library Directories... add: C:\OpenCV2.2\lib;C:\OpenCV2.2\bin;
Source Directories... add:
C:\OpenCV2.2\modules\calib3d\src;C:\OpenCV2.2\modules\contrib\src;C:\OpenCV2.2\modules\core\src;C:\OpenCV2.2\modules\features2d\src;C:\OpenCV2.2\modules\flann\src;C:\OpenCV2.2\modules\gpu\src;C:\OpenCV2.2\modules\gpu\src;C:\OpenCV2.2\modules\highgui\src;C:\OpenCV2.2\modules\imgproc\src;C:\OpenCV2.2\modules\legacy\src;C:\OpenCV2.2\modules\ml\src;C:\OpenCV2.2\modules\objdetect\src;C:\OpenCV2.2\modules\video\src;
Linker -> Input -> Additional Dependencies...
For Debug Builds... add:
opencv_calib3d220d.lib;opencv_contrib220d.lib;opencv_core220d.lib;opencv_features2d220d.lib;opencv_ffmpeg220d.lib;opencv_flann220d.lib;opencv_gpu220d.lib;opencv_highgui220d.lib;opencv_imgproc220d.lib;opencv_legacy220d.lib;opencv_ml220d.lib;opencv_objdetect220d.lib;opencv_video220d.lib;
At this point I thought I was done, but ran into the problem you described when running the exe in debug mode. The final step is obvious once you see it, select:
Linker -> General ... Set 'Use Library Dependency Inputs' to 'Yes'
Hope this helps.
Just add C:\OpenCV2.0\bin into your PATH environment variable
or
When you install OpenCV,
Choose the option, Add OpenCV to the system PATH for current user which is not default one
Just for your information,after add the "PATH",for my win7 i need to reboot it to get it work.
In Visual Studio 2013 you need to add this to the Environment Variables and then Restart your pc. This is the path where .dll file located in.
I have had numerous problems with opencv and only succeded after a gruesome 4-6 months. This is the last problem I have had, but all of the above didn't work. What worked for me was just copying and pasting the opencv_core2*.dll (and opencv_highgui2*.dll which it will ask for since you included this as well) into the release (or debug folder - I'm assuming. Haven't tested this) folder of your project, where your application file is.
Hope this helps!
You just need to add the folder of the needed dll file (or files) to your system "Environment Variables" in "Path".
Your problem will 100% be resolved. I had this problem too.
just open the bin folder and copy and paste the .dll files to the folder you are working in..it should fix the problem
As to #Marc's answer, I don't think VC uses the path from the OS. Did you add the path to VC's library paths. I usually add the DLLs to the project and copy if newer on the build and that works very well for me.
you can find the opencv_core248 and other dlls in opencv\build\x86\vc12\bin folder. Just copy the dlls you require into system32 folder. And your app should start working in a flash ! Hope it helps.
This might be like resurrecting a dead horse. But just so it's out there, the reason why the answer to these types of questions to simply put dll's into the system32 folder is because that folder is in the os's system path.
It's actually best practice to provide the os with a path link.
With windows 10
open up file explorer
right click on "this pc" and select "properties"
Now in the "Control Panel\System and Security\System" window that comes up, click on "Advanced System Settings" from the left hand panel.
At the bottom of the next window, click on the "Environment Variables" button.
On the next window, there are two panels, the top one is for modifying variables to the current user, and the bottom panel is for modifying variables to the system. On the bottom panel, find the variable "Path" and click it to select it, then click on the "edit" button.
Here you can then create, edit, delete, or update the different paths for the system. For example, to add mingw32-make to the system so you can access that command via command prompt, click new, then paste in the path to the bin. Example path, "D:\Qt\Tools\mingw730_64\bin", no quotation marks nor additional whitespaces.
Click ok on all the windows so that the changes are saved, then reboot your computer for the changes to be loaded.
The ".a" at the end of your DLL files is a problem, and those are there because you didn't use CMAKE to build OpenCV 2.0. Additionally you do not link to the DLL files, you link to the library files, and again, the reason you do not see the correct library files is because you didn't use CMAKE to build OpenCV 2.0. If you want to use OpenCV 2.0 you must build it for it to work correctly in Visual Studio. If you do not want to build it then I would suggest downgrading to OpenCV 1.1pre, it comes pre-built and is much more forgiving in Visual Studio.
Another option (and the one I would recommend) is to abandon OpenCV and go with EmguCV. I have been playing with OpenCV for about a year and things got much easier when I switched to EmguCV because EmguCV works with .NET, so you can use a language like C# that does not come with all the C++ baggage of pointers, header files, and memory allocation problem.
And as for the question of 64bit vs. 32bit, OpenCV does not officially support 64bit. To be on the safe side open your project properties and change the "Platform Target" under the "Build" tab from "Any CPU" to "X86". This should be done any time you do anything with OpenCV, even if you are using a wrapper like EmguCV.
Copy all .dll from /bin in System32
Just copy the .dll files to C:\windows\system32\
No need to do any of that. It is a visual studio error.
just go here:
http://connect.microsoft.com/VisualStudio/Downloads/DownloadDetails.aspx?DownloadID=31354
and download the appropriate fix for your computer's OS
close visual studio, run the fix and then restart VS
The code should run without any error.