Gmod Dll Programming

Hi, I wanted to start gmod injection dll programming but the problem is I don't know where to get the SDK to create internal hacks. Can someone please tell me where I can get the SDK?

Also I already know some C++ and I have tried the GMod SDK that was released but that one is outdated and I cannot compile it

Thanks

+Rep for ngnl.

You don't compile the sdk, you use it to call what you want or go sdk-less and count vfuncs.

Honestly, you could use a sdk from CS:S since they are pretty much the exact same,.