x86/Win32 compilation and using boost json about jwt-cpp HOT 2 CLOSED

From what I can tell just looking at your description and the error message, it seems like you didn't install openssl correctly (only copied the source files and not building it).
Unlike jwt-cpp, which is a header only library and can just be dropped into the project, you need to build openssl, during which the configuration.h.in file should get filled with information about your build and renamed to configuration.h.

Assuming you use visual studio for development the easiest way to get everything working would be to use the nuget package for both jwt-cpp and openssl.
If you don't use visual studio or don't want to use nuget, you can install a prebuilt version of it like this.

from jwt-cpp.

As this is a problem with installing dependencies, I am going to close this.

As Thalhammer mentioned, you should really look into using a package manager, given you need at least three it makes it a ton easier, Nuget, VCPKG, and Conan are great options to look into :)

from jwt-cpp.