在 Cmake 项目中指定 openmp CUDA 标志

Question

在 cmake 项目中如何将 openmp 标志传递给 NVCC？ 我的这个项目的 CMakeLists.txt 看起来像这样，但编译失败，并显示“未定义对‘omp_get_wtime’的引用”消息。

cmake_minimum_required (VERSION 2.8.2)

set (CMAKE_MODULE_PATH 
  "${CMAKE_SOURCE_DIR}/cmake" 
  ${CMAKE_MODULE_PATH}
)

find_package (CUDA 4.0 REQUIRED)

if(OPENMP_FOUND)
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}
${OpenMP_EXE_LINKER_FLAGS}") endif()

set (CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_SOURCE_DIR}/bin)
set (CMAKE_LIBRARY_OUTPUT_DIRECTORY ${PROJECT_SOURCE_DIR}/lib)
set (CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${PROJECT_SOURCE_DIR}/lib)

if(UNIX)
  add_definitions(-DUNIX)
endif(UNIX)

add_subdirectory(xor)

CUDA_BUILD_CLEAN_TARGET()

Answer 1

我刚刚发现将 find_package (OpenMP) 添加到前面的脚本中可以解决问题。