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opencv/cmake/OpenCVDetectCUDA.cmake
cudawarped 1d9dda3f09
Merge pull request #27112 from cudawarped:add_cuda_c++17 
cuda: Force C++17 Standard for CUDA targets when CUDA Toolkit >=12.8 #27112

Fix https://github.com/opencv/opencv/issues/27095.

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [ ] The PR is proposed to the proper branch
- [ ] There is a reference to the original bug report and related work
- [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [ ] The feature is well documented and sample code can be built with the project CMake
2025-03-21 14:41:49 +03:00

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CMake
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if((WIN32 AND NOT MSVC) OR OPENCV_CMAKE_FORCE_CUDA)
message(STATUS "CUDA: Compilation is disabled (due to only Visual Studio compiler supported on your platform).")
return()
endif()
if((NOT UNIX AND CV_CLANG) OR OPENCV_CMAKE_FORCE_CUDA)
message(STATUS "CUDA: Compilation is disabled (due to Clang unsupported on your platform).")
return()
endif()
#set(OPENCV_CMAKE_CUDA_DEBUG 1)
if(CUDA_TOOLKIT_ROOT_DIR)
set(CUDA_TOOLKIT_TARGET_DIR ${CUDA_TOOLKIT_ROOT_DIR})
endif()
if(((NOT CMAKE_VERSION VERSION_LESS "3.9.0") # requires https://gitlab.kitware.com/cmake/cmake/merge_requests/663
OR OPENCV_CUDA_FORCE_EXTERNAL_CMAKE_MODULE)
AND NOT OPENCV_CUDA_FORCE_BUILTIN_CMAKE_MODULE)
ocv_update(CUDA_LINK_LIBRARIES_KEYWORD "PRIVATE")
find_host_package(CUDA "${MIN_VER_CUDA}" QUIET)
else()
# Use OpenCV's patched "FindCUDA" module
set(CMAKE_MODULE_PATH "${OpenCV_SOURCE_DIR}/cmake" ${CMAKE_MODULE_PATH})
if(ANDROID)
set(CUDA_TARGET_OS_VARIANT "Android")
endif()
find_host_package(CUDA "${MIN_VER_CUDA}" QUIET)
list(REMOVE_AT CMAKE_MODULE_PATH 0)
endif()
if(NOT CUDA_FOUND)
unset(CUDA_ARCH_BIN CACHE)
unset(CUDA_ARCH_PTX CACHE)
return()
endif()
unset(CUDA_nvcuvenc_LIBRARY CACHE)
set(HAVE_CUDA 1)
if(NOT CUDA_VERSION VERSION_LESS 11.0)
# CUDA 11.0 removes nppicom
ocv_list_filterout(CUDA_nppi_LIBRARY "nppicom")
ocv_list_filterout(CUDA_npp_LIBRARY "nppicom")
endif()
if(WITH_CUFFT)
set(HAVE_CUFFT 1)
endif()
if(WITH_CUBLAS)
set(HAVE_CUBLAS 1)
endif()
if(WITH_CUDNN)
set(CMAKE_MODULE_PATH "${OpenCV_SOURCE_DIR}/cmake" ${CMAKE_MODULE_PATH})
find_host_package(CUDNN "${MIN_VER_CUDNN}")
list(REMOVE_AT CMAKE_MODULE_PATH 0)
if(CUDNN_FOUND)
set(HAVE_CUDNN 1)
endif()
endif()
include(cmake/OpenCVDetectCUDAUtils.cmake)
if(WITH_NVCUVID OR WITH_NVCUVENC)
set(cuda_toolkit_dirs "${CUDA_TOOLKIT_TARGET_DIR}" "${CUDA_TOOLKIT_ROOT_DIR}")
ocv_check_for_nvidia_video_codec_sdk("${cuda_toolkit_dirs}")
endif()
message(STATUS "CUDA detected: " ${CUDA_VERSION})
ocv_set_cuda_detection_nvcc_flags(CUDA_HOST_COMPILER)
ocv_set_cuda_arch_bin_and_ptx(${CUDA_NVCC_EXECUTABLE})
# NVCC flags to be set
set(NVCC_FLAGS_EXTRA "")
# These vars will be passed into the templates
set(OPENCV_CUDA_ARCH_BIN "")
set(OPENCV_CUDA_ARCH_PTX "")
set(OPENCV_CUDA_ARCH_FEATURES "")
# Tell NVCC to add binaries for the specified GPUs
string(REGEX MATCHALL "[0-9()]+" ARCH_LIST "${ARCH_BIN_NO_POINTS}")
foreach(ARCH IN LISTS ARCH_LIST)
if(ARCH MATCHES "([0-9]+)\\(([0-9]+)\\)")
# User explicitly specified PTX for the concrete BIN
set(NVCC_FLAGS_EXTRA ${NVCC_FLAGS_EXTRA} -gencode arch=compute_${CMAKE_MATCH_2},code=sm_${CMAKE_MATCH_1})
set(OPENCV_CUDA_ARCH_BIN "${OPENCV_CUDA_ARCH_BIN} ${CMAKE_MATCH_1}")
set(OPENCV_CUDA_ARCH_FEATURES "${OPENCV_CUDA_ARCH_FEATURES} ${CMAKE_MATCH_2}")
else()
# User didn't explicitly specify PTX for the concrete BIN, we assume PTX=BIN
set(NVCC_FLAGS_EXTRA ${NVCC_FLAGS_EXTRA} -gencode arch=compute_${ARCH},code=sm_${ARCH})
set(OPENCV_CUDA_ARCH_BIN "${OPENCV_CUDA_ARCH_BIN} ${ARCH}")
set(OPENCV_CUDA_ARCH_FEATURES "${OPENCV_CUDA_ARCH_FEATURES} ${ARCH}")
endif()
endforeach()
set(NVCC_FLAGS_EXTRA ${NVCC_FLAGS_EXTRA} -D_FORCE_INLINES)
# Tell NVCC to add PTX intermediate code for the specified architectures
string(REGEX MATCHALL "[0-9]+" ARCH_LIST "${ARCH_PTX_NO_POINTS}")
foreach(ARCH IN LISTS ARCH_LIST)
set(NVCC_FLAGS_EXTRA ${NVCC_FLAGS_EXTRA} -gencode arch=compute_${ARCH},code=compute_${ARCH})
set(OPENCV_CUDA_ARCH_PTX "${OPENCV_CUDA_ARCH_PTX} ${ARCH}")
set(OPENCV_CUDA_ARCH_FEATURES "${OPENCV_CUDA_ARCH_FEATURES} ${ARCH}")
endforeach()
# These vars will be processed in other scripts
set(CUDA_NVCC_FLAGS ${CUDA_NVCC_FLAGS} ${NVCC_FLAGS_EXTRA})
set(OpenCV_CUDA_CC "${NVCC_FLAGS_EXTRA}")
if(ANDROID)
set(CUDA_NVCC_FLAGS ${CUDA_NVCC_FLAGS} "-Xptxas;-dlcm=ca")
endif()
ocv_set_nvcc_threads_for_vs()
message(STATUS "CUDA: NVCC target flags ${CUDA_NVCC_FLAGS}")
OCV_OPTION(CUDA_FAST_MATH "Enable --use_fast_math for CUDA compiler " OFF)
if(CUDA_FAST_MATH)
set(CUDA_NVCC_FLAGS ${CUDA_NVCC_FLAGS} --use_fast_math)
endif()
OCV_OPTION(CUDA_ENABLE_DELAYLOAD "Enable delayed loading of CUDA DLLs" OFF VISIBLE_IF MSVC)
mark_as_advanced(CUDA_BUILD_CUBIN CUDA_BUILD_EMULATION CUDA_VERBOSE_BUILD CUDA_SDK_ROOT_DIR)
macro(ocv_check_windows_crt_linkage)
# The new MSVC runtime abstraction is only useable if CUDA is a first class language
if(WIN32 AND POLICY CMP0091)
cmake_policy(GET CMP0091 MSVC_RUNTIME_SET_BY_ABSTRACTION)
if(MSVC_RUNTIME_SET_BY_ABSTRACTION STREQUAL "NEW")
if(NOT BUILD_SHARED_LIBS AND BUILD_WITH_STATIC_CRT)
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /MT")
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /MTd")
else()
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /MD")
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /MDd")
endif()
endif()
endif()
endmacro()
macro(ocv_cuda_compile VAR)
ocv_cuda_filter_options()
ocv_check_windows_crt_linkage()
ocv_nvcc_flags()
if(NOT " ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_RELEASE} ${CMAKE_CXX_FLAGS_DEBUG} ${CUDA_NVCC_FLAGS}" MATCHES "-std=")
if(UNIX OR APPLE)
if(CUDA_VERSION VERSION_LESS "11.0")
list(APPEND CUDA_NVCC_FLAGS "--std=c++11")
elseif(CUDA_VERSION VERSION_LESS "12.8")
list(APPEND CUDA_NVCC_FLAGS "--std=c++14")
elseif(CUDA_VERSION VERSION_GREATER_EQUAL "12.8")
list(APPEND CUDA_NVCC_FLAGS "--std=c++17")
endif()
endif()
endif()
CUDA_COMPILE(${VAR} ${ARGN})
foreach(var CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_RELEASE CMAKE_CXX_FLAGS_DEBUG)
set(${var} "${${var}_backup_in_cuda_compile_}")
unset(${var}_backup_in_cuda_compile_)
endforeach()
endmacro()
if(HAVE_CUDA)
set(CUDA_LIBS_PATH "")
foreach(p ${CUDA_LIBRARIES} ${CUDA_npp_LIBRARY})
get_filename_component(_tmp ${p} PATH)
list(APPEND CUDA_LIBS_PATH ${_tmp})
endforeach()
if(HAVE_CUBLAS)
foreach(p ${CUDA_cublas_LIBRARY})
get_filename_component(_tmp ${p} PATH)
list(APPEND CUDA_LIBS_PATH ${_tmp})
endforeach()
endif()
if(HAVE_CUDNN)
foreach(p ${CUDNN_LIBRARIES})
get_filename_component(_tmp ${p} PATH)
list(APPEND CUDA_LIBS_PATH ${_tmp})
endforeach()
endif()
if(HAVE_CUFFT)
foreach(p ${CUDA_cufft_LIBRARY})
get_filename_component(_tmp ${p} PATH)
list(APPEND CUDA_LIBS_PATH ${_tmp})
endforeach()
endif()
list(REMOVE_DUPLICATES CUDA_LIBS_PATH)
link_directories(${CUDA_LIBS_PATH})
set(CUDA_LIBRARIES_ABS ${CUDA_LIBRARIES})
ocv_convert_to_lib_name(CUDA_LIBRARIES ${CUDA_LIBRARIES})
set(CUDA_npp_LIBRARY_ABS ${CUDA_npp_LIBRARY})
ocv_convert_to_lib_name(CUDA_npp_LIBRARY ${CUDA_npp_LIBRARY})
if(HAVE_CUBLAS)
set(CUDA_cublas_LIBRARY_ABS ${CUDA_cublas_LIBRARY})
ocv_convert_to_lib_name(CUDA_cublas_LIBRARY ${CUDA_cublas_LIBRARY})
endif()
if(HAVE_CUDNN)
set(CUDNN_LIBRARIES_ABS ${CUDNN_LIBRARIES})
ocv_convert_to_lib_name(CUDNN_LIBRARIES ${CUDNN_LIBRARIES})
endif()
if(HAVE_CUFFT)
set(CUDA_cufft_LIBRARY_ABS ${CUDA_cufft_LIBRARY})
ocv_convert_to_lib_name(CUDA_cufft_LIBRARY ${CUDA_cufft_LIBRARY})
endif()
if(CMAKE_GENERATOR MATCHES "Visual Studio"
AND NOT OPENCV_SKIP_CUDA_CMAKE_SUPPRESS_REGENERATION
)
message(STATUS "CUDA: MSVS generator is detected. Disabling CMake re-run checks (CMAKE_SUPPRESS_REGENERATION=ON). You need to run CMake manually if updates are required.")
set(CMAKE_SUPPRESS_REGENERATION ON)
endif()
endif()
if(HAVE_CUDA)
ocv_apply_cuda_stub_workaround("${CUDA_CUDA_LIBRARY}")
ocv_check_cuda_delayed_load("${CUDA_TOOLKIT_ROOT_DIR}")
# ----------------------------------------------------------------------------
# Add CUDA libraries (needed for apps/tools, samples)
# ----------------------------------------------------------------------------
set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} ${CUDA_LIBRARIES} ${CUDA_npp_LIBRARY})
if(HAVE_CUBLAS)
set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} ${CUDA_cublas_LIBRARY})
endif()
if(HAVE_CUDNN)
set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} ${CUDNN_LIBRARIES})
endif()
if(HAVE_CUFFT)
set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} ${CUDA_cufft_LIBRARY})
endif()
foreach(p ${CUDA_LIBS_PATH})
if(MSVC AND CMAKE_GENERATOR MATCHES "Ninja|JOM")
set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} ${CMAKE_LIBRARY_PATH_FLAG}"${p}")
else()
set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} ${CMAKE_LIBRARY_PATH_FLAG}${p})
endif()
endforeach()
endif()
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