How to separate CUDA code into multiple files

Question

I am trying separate a CUDA program into two separate .cu files in effort to edge closer to writing a real app in C++. I have a simple little program that:

Allocate

Answer 1

You are including mykernel.cu in kernelsupport.cu, when you try to link the compiler sees mykernel.cu twice. You'll have to create a header defining TestDevice and include that instead.

re comment:

Something like this should work

// MyKernel.h
#ifndef mykernel_h
#define mykernel_h
__global__ void TestDevice(int* devicearray);
#endif

and then change the including file to

//KernelSupport.cu
#ifndef _KERNEL_SUPPORT_
#define _KERNEL_SUPPORT_

#include 
#include 
// ...

re your edit

As long as the header you use in c++ code doesn't have any cuda specific stuff (__kernel__,__global__, etc) you should be fine linking c++ and cuda code.