In CMake version 3.8, native support for CUDA as a language was introduced. When a project has CUDA as one of its languages, CMake will proceed to locate CUDA (e.g. it locates the nvcc binary).
As long as you only compile CUDA code - this is enough. But what if you want to compile a C++ target in that project? The CUDA includes are not -I'ed automatically, and CMakeCache.txt does not seem to contain the CUDA include path anywhere.
Do I actually have to run something find_package(CUDA 9.0 REQUIRED) even when CMake itself has already located CUDA? Or - can I obtain the include directory some other way?
The include directories, which are used by the compiler set by CMAKE_CUDA_COMPILER, can be retrieved from the CMake variable CMAKE_CUDA_TOOLKIT_INCLUDE_DIRECTORIES.
For getting the libraries, the best way is probably to use find_library() in combination with CMAKE_CUDA_IMPLICIT_LINK_DIRECTORIES.
Example:
cmake_minimum_required(VERSION 3.9)
project(MyProject VERSION 1.0)
enable_language(CUDA)
find_library(CUDART_LIBRARY cudart ${CMAKE_CUDA_IMPLICIT_LINK_DIRECTORIES})
add_executable(binary_linking_to_cudart my_cpp_file_using_cudart.cpp)
target_include_directories(binary_linking_to_cudart PRIVATE ${CMAKE_CUDA_TOOLKIT_INCLUDE_DIRECTORIES})
target_link_libraries(binary_linking_to_cudart ${CUDART_LIBRARY})
This issue is also discussed on the CMake bug tracker: Provide target libraries for cuda libraries.
来源：https://stackoverflow.com/questions/51756562/obtaining-the-cuda-include-dir-in-c-targets-with-native-cuda-support-cmake