How should a very simple Makefile look like for Cuda compiling under linux

Question

I want to compile a very basic hello world level Cuda program under Linux. I have three files:

• the kernel: helloWorld.cu
• main method: helloWorld.cpp
• common header: helloWorld.h

Could you write me a simple Makefile to compile this with nvcc and g++?

Thanks,
Gabor

Answer 1

I've never heard of Cuda before, but from the online documentation it looks as if X.cu is supposed to be compiled into X.o, so having helloWorld.cu and helloWorld.cpp is not a good idea. With your permission I'll rename the "kernel" helloKernel.cu, then this should work:

NVCC = nvcc

helloWorld.o: helloWorld.cpp helloWorld.h
    $(NVCC) -c %&lt -o $@

helloKernel.o: helloKernel.cu
    $(NVCC) -c %&lt -o $@

helloWorld: helloWorld.o helloKernel.o
    $(NVCC) %^ -o $@

(Note that those leading spaces are tabs.)

If that works, try a slicker version:

NVCC = nvcc

helloWorld.o: %.o : %.cpp %.h
helloKernel.o: %.o : %.cu

%.o:
    $(NVCC) -c %&lt -o $@

helloWorld: helloWorld.o helloKernel.o
    $(NVCC) %^ -o $@