function(vcpkg_find_cuda) cmake_parse_arguments(PARSE_ARGV 0 vfc "" "OUT_CUDA_TOOLKIT_ROOT" "") if(NOT vfc_OUT_CUDA_TOOLKIT_ROOT) message(FATAL_ERROR "vcpkg_find_cuda() requres an OUT_CUDA_TOOLKIT_ROOT argument") endif() set(CUDA_REQUIRED_VERSION "10.1.0") set(CUDA_PATHS ENV CUDA_PATH ENV CUDA_BIN_PATH ENV CUDA_PATH_V11_0 ENV CUDA_PATH_V10_2 ENV CUDA_PATH_V10_1) if (VCPKG_TARGET_IS_WINDOWS) find_program(NVCC NAMES nvcc.exe PATHS ${CUDA_PATHS} PATH_SUFFIXES bin bin64 DOC "Toolkit location." NO_DEFAULT_PATH ) else() if (VCPKG_TARGET_IS_LINUX) set(platform_base "/usr/local/cuda-") else() set(platform_base "/Developer/NVIDIA/CUDA-") endif() file(GLOB possible_paths "${platform_base}*") set(FOUND_PATH ) foreach (p ${possible_paths}) # Extract version number from end of string string(REGEX MATCH "[0-9][0-9]?\\.[0-9]$" p_version ${p}) if (IS_DIRECTORY ${p} AND p_version) if (p_version VERSION_GREATER_EQUAL CUDA_REQUIRED_VERSION) set(FOUND_PATH ${p}) break() endif() endif() endforeach() find_program(NVCC NAMES nvcc PATHS ${CUDA_PATHS} PATHS ${FOUND_PATH} PATH_SUFFIXES bin bin64 DOC "Toolkit location." NO_DEFAULT_PATH ) endif() set(error_code 1) if (NVCC) execute_process( COMMAND ${NVCC} --version OUTPUT_VARIABLE NVCC_OUTPUT RESULT_VARIABLE error_code) endif() if (error_code) message(STATUS "Executing ${NVCC} --version resulted in error: ${error_code}") message(FATAL_ERROR "Could not find CUDA. Before continuing, please download and install CUDA (v${CUDA_REQUIRED_VERSION} or higher) from:" "\n https://developer.nvidia.com/cuda-downloads\n") endif() # Sample output: # NVIDIA (R) Cuda compiler driver # Copyright (c) 2005-2016 NVIDIA Corporation # Built on Sat_Sep__3_19:05:48_CDT_2016 # Cuda compilation tools, release 8.0, V8.0.44 string(REGEX MATCH "V([0-9]+)\\.([0-9]+)\\.([0-9]+)" CUDA_VERSION ${NVCC_OUTPUT}) message(STATUS "Found CUDA ${CUDA_VERSION}") set(CUDA_VERSION_MAJOR ${CMAKE_MATCH_1}) set(CUDA_VERSION_MINOR ${CMAKE_MATCH_2}) set(CUDA_VERSION_PATCH ${CMAKE_MATCH_3}) if ("${CUDA_VERSION_MAJOR}.${CUDA_VERSION_MINOR}." VERSION_LESS ${CUDA_REQUIRED_VERSION}) message(FATAL_ERROR "CUDA ${CUDA_VERSION} found, but v${CUDA_REQUIRED_VERSION} is required. Please download and install a more recent version of CUDA from:" "\n https://developer.nvidia.com/cuda-downloads\n") endif() get_filename_component(CUDA_TOOLKIT_ROOT "${NVCC}" DIRECTORY) get_filename_component(CUDA_TOOLKIT_ROOT "${CUDA_TOOLKIT_ROOT}" DIRECTORY) set(${vfc_OUT_CUDA_TOOLKIT_ROOT} "${CUDA_TOOLKIT_ROOT}" PARENT_SCOPE) endfunction()