CUDA build toolkit portable with source code

I want to maintain my cuda 7.5 project via visual studio online. What is the best way to keep all cuda build requirements in my repository and configurate my project to use them instead of require a CUDA installation?

In a first try i just copied the whole cuda folder and configured my project to use the MSBuildExtensions(CUDA 7.5.props, CUDA 7.5.targets) within, but build environment properties are missing (CudaToolkitDir, CudaToolkitNvccPath,…). I manually set these 2 parameters and now the right nvcc.exe is called but it fails with return code -1.

I’m a beginner regarding msbuild.