I have followed the official guide for setting up OpenCv in codeblocks.I did everything as in the guide.I succeded to compile one code of the samples of opencv but when I run I have an error that some .dll is missing.More precisely this is the error:The application can't start because libopencv_core242.dll is missing from your computer..Try reinstaling the application...The awkward thing is that this static library is present in the bin folder under build->x64->mingw->bin..
Any help would be appreciated.
Try to copy the dll into the folder containing the executable.
For a "cleaner" solution, it has been answered here (with libgcc) : The program can't start because libgcc_s_dw2-1.dll is missing
Basically, either you copy the dll containing folder into the PATH ENV, or you can try to link with the statically.
Related
I'm getting this error when I try to run my app:
I checked and there is no reason that I can see that it wouldn't be able to find libnlopt-0.dll. Here it is (note GlassModelCalcualator is the DLL that uses libnlopt-0.dll), in the GlassModelCalcualatorDLL folder:
and in the debug folder of GlassModelCalcualatorDLL:
I have a different program that has a console which uses GlassModelCalcualator.dll and that also has this issue. To fix that, I had to put libnlopt-0.dll in the Debug folder of GlassModelCalcualator.
I'm assuming this is not the same problem here since you can clearly see that libnlopt-0.dll is in GlassModelCalcualator's Debug folder.
Any ideas?
Windows will follow a hierarchical order when searching for dll's.
You could place your dll in the same directory as the exe or even in the Windows system folders (only if you're absolutely sure you want to keep this dll forever as there's no cleanup)
https://msdn.microsoft.com/en-us/library/windows/desktop/ms682586(v=vs.85).aspx
After finishing my C++ program (on windows os using codeblocks)(using libcurl) when i try to launch the program from the executable it displays an error saying that i can't start the program because libcurldll is missing,reinstall program then retry. I don't think any line of code is needed here,it's just a configuration and logics problem,any ideas,would be great !
Please note that,running it from the codeblocks's console works fine.
Common issue with DLLs or SOs is that the executable needs to know where they are.
A common solution is to place the DLL library in the same folder as the executable:
Find the libcurldll file.
Find the folder containing your executable.
Copy the libcurldll file into the folder containing your executable.
I have made a project and linked the libnoise library to it, it runs fine when I include the files but as soon as I run this bit of code -
noise::module::Perlin myModule;
double value = myModule.GetValue (14.50, 20.25, 75.75);
std::cout << value << std::endl;
it throws me this error:
the program can't start because libnoise.dll is missing from your computer. Try re installing the program to fix this problem.
I already have the .dll in the same folder as the .exe and it should be linked correctly.
thanks in advance.
I say you were using Visual Studio. The IDE has the concept of 'working directory', which happens to be the directory the loader starts looking for dynamic libraries your executable might depend on.
Properly setting the WD to the directory in which the executable gets generated is the way to go.
I am a beginner learning OpenCV. I have the latest version (2.4.7.2 as of Dec, 2013) and am trying a simple code to load image. The code is OK, but when I compiled and then run the source code, it says that
"the program can't start because opencv_core247d.dll is missing."
I already tried changing the computer's environment and making all the corresponding path setting for my solution according to several suggestions. I tried rebooting the PC, adding the "missing file" to my source code's Debug file, tried getting around with CMake (fortunately though it failed to generate anything and I guess that goes for my next question); the problem persists.
So, is there any fool-proof and simple way of dealing with this problem? Thank you. Btw, here is my little source code:
# include "highgui.h"
int main (int argc, char** argv)
{
IplImage* img = cvLoadImage("D:\\OpenCV Test\\LoadImage\\fruits.jpg") ;
cvNamedWindow("Fuits", CV_WINDOW_AUTOSIZE) ;
cvShowImage("Fuits", img) ;
cvWaitKey(0) ;
cvDestroyWindow("Fruits") ;
cvReleaseImage (&img) ;
}
You are running into OpenCV dll issues, similar to here. 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).
i have problem .
i have win7-64bit and visual studio 2013 and opencv-3
the program can't start because opencv_word300d.dll is missing from your computer . try reinstalling the program to fix problem.
As a tip make sure the last three digits in your linker contain the same numbers as your actual dll files.
Ex: version 3.2.0 should be written 320.dll and so on
Make sure your environment variables are set properly (i.e., Path should have ../opencv/bin/) and then use these lines in your CMakeList file to generate the appropriate project files.
FIND_PACKAGE( OpenCV REQUIRED )
TARGET_LINK_LIBRARIES( myProject ${OpenCV_LIBS} )
Trying to run the following:
#include<iostream>
#include<boost/filesystem/operations.hpp>
namespace bfs=boost::filesystem;
int main()
{
bfs::path p("second.cpp");
if(bfs::exists(p))
std::cout<<p.leaf()<<std::endl;
}
I got some errors in cygwin so I decided to try out netbeans, and used the following as a guide. I added all links and the following for filesystem Project -> properties -> Linker ->Libraries -> Add option -> Other -> -lfile_system as noted here. I have run a separate test using #include<boost/any.hpp> so I am not currently doubting that my boost is not installed correclty.
It seems weird to me that it is "file_system", so I also tried "filesystem" but to no avail.
When i hold Ctrl and click on #include<boost/filesystem/operations.hpp> my netbeans brings up my operations.hpp file so it seems okay (linked properly internally that it can "see" what I want it to see).
The solution to installing boost came in the following form:
1 - If you have any path variables that are being used for Visual Studio you should temporarily change the variable during installation. This is a good guide. Once that is done, this is one step completed.
2 - Download and install MinGW. This is a very easy process and you can find the installer files here.
Once you have done these things (if you are in the same situation as me), you will now be able to properly install boost.
Horay!
Using Boost with cygwin step by step
Create a new Project
It is better to take the names given here in this tutorial exactly. Later ask: It does not work, can then be easier to find.
I do not think I need to mention all T:\ must of course be replaced with your drive.
Project Name : Boost-cyg-Test
Now your Project should look like
Open main.cpp
Overwrite the generated code with the following. We want to that, first of all everything works without error.
Therefore, please do not use your own special code.
It is difficult to find a fault. Then told after several ask, to get:
I have used my own code
#include <iostream>
#include <boost/filesystem.hpp>
using namespace std;
using namespace boost::filesystem;
int main()
{
path p("second.cpp");
if (exists(p)) { std::cout<<p.leaf()<<std::endl; }
}
In this section we assume that "boost" is already compiled.
goto Tools -> Options
Your C++ Code Assistance options should look something like this.
If this is not so, we should let Netbeans create that for us.
Add New Tool Collection
After we have completed this dialog with OK, we should find the settings shown above. ( C++ Code Assistance options).
Copy all libs into the right place
Let's create a new folder 'boost'.
With a search tool, search in your compiled Boost folder for *.a
My Boost is compiled with the shared option so we find :
For our short App. we need only 2 files.
libboost_filesystem-gcc45-mt-d-1_53.dll.a
libboost_system-gcc45-mt-d-1_53.dll.a
But if we're at it to copy two files, we can copy all files.
So mark all found .a files and copy them into the directory just created
T:\cygwin\lib\boost .
Now we do the same with our .dll files.
Mark all .dll files and copy it in your ?:\cygwin\bin directory.
If you only have compiled static librarys, you can skip this point.
Now it's time to modify our project settings.
As you can see i put my source Boost folder into cygwin
and
As we have already noted above, we need two .a files.
with Add Library navigate to T:\cygwin\lib\boost and select
libboost_filesystem-gcc45-mt-d-1_53.dll.a
libboost_system-gcc45-mt-d-1_53.dll.a
Now you'll notice that this name was shortened by netbeans to:
boost_filesystem-gcc45-mt-d-1_53.dll
boost_system-gcc45-mt-d-1_53.dll
This is somewhat confusing. It looks as if a .dll is standing here. But it is really a .a file.
Set a breakpoint in main.cpp. Now we start debug.
I have marked the important part, the two libs, with an arrow.
All libs are found and after make has finished, stops at the breakpoint.
The output:
Build Boost for Cygwin
For all who want to create boost with shared library itself.
Download boost_1_53_0.zip
Create a folder in your ?:\cygwin directory.
boost_1_53_0
Extract the zip file into that directory.
It should look like:
open a cmd window, cd to boost_1_53_0 directory.
To have a clean build we need a PATH that have only the cygwin home and bin.
In the cmd type.
SET PATH=T:\cygwin;T:\cygwin\bin
and test the path.
PATH
Type
bootstrap.bat
Type
.\b2 --build-dir=T:\boost-cyg toolset=gcc variant=debug link=shared runtime-link=shared
After some time the build is finished.
Now you have the same environment that we have used in the tutorial.
If you get a Error : gcc not found
copy (not rename) in ?:\cygwin\bin folder, for example : (names may differ).
i686-pc-cygwin-gcc-4.5.3.exe to gcc.exe
and
i686-pc-cygwin-g++-4.exe to g++.exe
Hope it helps you.
Could you paste the error you get when compiling ?
I am not used to compile programs in a Windows environment, but I think as Jesse Good suggested in a comment that you have a linker error.
You may solve it by using -lboost_filesystem instead of lfile_system.
To find out how your libs are called, you get the name of your lib (on my unix environment I have libboost_filesystem.so), strip the "lib" prefix and the ".so" or ".a" suffix (must be different in a Windows environment).
if your boost installation is correct and you are sure about it then for Unable to resolve identifier try Code Assistance->Reparse Project from context menu of the project. It tries to recover broken code model by reparsing project from scratch. if that didn't workout try closing IDE and removing code model cache.
p.s. do you have compilation errors?