Use CMake to compile CUDA program

Refer Building Cross-Platform CUDA Applications with CMake and code-samples, now CMakeLists.txt can be as simple as this:

cmake_minimum_required(VERSION 3.9 FATAL_ERROR)
project(lscuda LANGUAGES CXX CUDA)

add_executable(lscuda lscuda.cu)

If compiler is not in $PATH, there are two methods to set it:

(1) Add following line in CMakeLists.txt:

SET(CMAKE_CUDA_COMPILER /usr/local/cuda-9.0/bin/nvcc)

(2) Set CUDACXX environmental variable:

$ CUDACXX=/usr/local/cuda-9.0/bin/nvcc cmake ..

Use OpenMP:

FIND_PACKAGE(OpenMP REQUIRED)
IF (OPENMP_FOUND) 
    SET(CMAKE_CUDA_FLAGS "${CMAKE_CUDA_FLAGS} -Xcompiler=${OpenMP_CXX_FLAGS}") 
    SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${OpenMP_CXX_FLAGS}") 
ENDIF()