Building CUDA object files using cmake

build, cmake, cuda

Solution

It is possible to compile object files with the CUDA support that comes with newer versions of cmake. You use the `cuda_compile` command. See below.

# CMakeLists.txt for G4CU project                                                                                                                                                                          
project(test-cuda-thrust-gdb)

# required cmake version                                                                                                                                                                                   
cmake_minimum_required(VERSION 2.8)

# packages                                                                                                                                                                                                 
find_package(CUDA)

# nvcc flags                                                                                                                                                                                               
set(CUDA_NVCC_FLAGS ${CUDA_NVCC_FLAGS};-gencode arch=compute_20,code=sm_20)

cuda_compile(HELPER_O helper.cu)
cuda_compile(DRIVER_O driver.cu OPTIONS -G)

cuda_add_executable(driver ${HELPER_O} ${DRIVER_O})

If you need more information have a look at the `FindCUDA.cmake` file.

Problem

I got the following setup. I'm going to extend a framework written in C++ using MPI and other Stuff using CUDA. The Project uses cmake for building. I would like to avoid using a library for my extensions and build object files from my cuda sources. Afterwards I would like to link these object object files and some other files compiled with other compilers. Does anyone have a clue on hwo to achieve that? I had a look at http://code.google.com/p/cudpp/wiki/BuildingCUDPPwithCMake for getting an overview on how to use CUDA with cmake but this solution uses a library as well.

Original source