How to use libgit2 from a native C++ application on Windows? (Microsoft VC++)

Question

Summary: Is there any tiny example on how to build the Win32 C++ console application that uses the libgit2 library (sources available at GitHub)?

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Answer 1

It's a little surprising if you generated the project from CMake, bit it could be that you're not linking to libgit2.lib. Make sure you have git2.dll in Project Properties -> Configuration Properties -> Linker -> Input -> Additional Dependencies.

Answer 2

This strongly suggests a calling convention mismatch to me. libgit2 uses __stdcall by default, for a number of reasons, while Visual Studio defaults to creating projects that use the __cdecl calling convention. While your program can use either calling convention and successfully call libgit2 using a different one, the easiest solution is probably just to use the same calling convention for both.

When you configure libgit2, you can turn off the STDCALL flag, which will cause it to emit a library built with __cdecl calling conventions:

cmake %PATH_TO_LIBGIT2_SOURCE% -DTHREADSAFE=ON -DSTDCALL=OFF
cmake --build .