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Tell to the linker from where to get the functions or data structures of OpenCV, when they are needed. You do this by showing it the header files.

Tell to the compiler how the OpenCV library looks.

To build an application with OpenCV you need to do two things: As a drawback your application will be larger one and as, it will take more time to load it during its startup. So there is no chance that the user deletes them, for some reason. When you use this the library will be built-in inside your exe file. You may build these by using our source files as described in the Installation in Windows tutorial.

Of course you need to have the dll of the OpenCV on all systems where you want to run your application.Īnother approach is to use static libraries that have lib extensions. This means that if you have ten applications using the OpenCV library, no need to have around a version for each one of them. These have the advantage that all the content of the library is loaded only at runtime, on demand, and that countless programs may use the same library file. The OpenCV libraries, distributed by us, on the Microsoft Windows operating system are in a Dynamic Linked Libraries ( DLL).