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Open Source Computer Vision Library
https://opencv.org/
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188 lines
6.9 KiB
188 lines
6.9 KiB
if(${CMAKE_VERSION} VERSION_LESS "2.8.3") |
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message(STATUS "WITH_CUDA flag requires CMake 2.8.3 or newer. CUDA support is disabled.") |
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return() |
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endif() |
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if(WIN32 AND NOT MSVC) |
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message(STATUS "CUDA compilation is disabled (due to only Visual Studio compiler supported on your platform).") |
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return() |
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endif() |
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if(CMAKE_COMPILER_IS_GNUCXX AND NOT APPLE AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang") |
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message(STATUS "CUDA compilation is disabled (due to Clang unsupported on your platform).") |
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return() |
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endif() |
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find_package(CUDA 4.2 QUIET) |
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if(CUDA_FOUND) |
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set(HAVE_CUDA 1) |
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if(WITH_CUFFT) |
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set(HAVE_CUFFT 1) |
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endif() |
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if(WITH_CUBLAS) |
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set(HAVE_CUBLAS 1) |
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endif() |
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if(${CUDA_VERSION} VERSION_LESS "5.5") |
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find_cuda_helper_libs(npp) |
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else() |
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find_cuda_helper_libs(nppc) |
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find_cuda_helper_libs(nppi) |
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find_cuda_helper_libs(npps) |
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set(CUDA_npp_LIBRARY ${CUDA_nppc_LIBRARY} ${CUDA_nppi_LIBRARY} ${CUDA_npps_LIBRARY}) |
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endif() |
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if(WITH_NVCUVID) |
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find_cuda_helper_libs(nvcuvid) |
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set(HAVE_NVCUVID 1) |
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endif() |
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message(STATUS "CUDA detected: " ${CUDA_VERSION}) |
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set(_generations "Fermi" "Kepler") |
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if(NOT CMAKE_CROSSCOMPILING) |
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list(APPEND _generations "Auto") |
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endif() |
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set(CUDA_GENERATION "" CACHE STRING "Build CUDA device code only for specific GPU architecture. Leave empty to build for all architectures.") |
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if( CMAKE_VERSION VERSION_GREATER "2.8" ) |
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set_property( CACHE CUDA_GENERATION PROPERTY STRINGS "" ${_generations} ) |
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endif() |
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if(CUDA_GENERATION) |
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if(NOT ";${_generations};" MATCHES ";${CUDA_GENERATION};") |
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string(REPLACE ";" ", " _generations "${_generations}") |
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message(FATAL_ERROR "ERROR: ${_generations} Generations are suppered.") |
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endif() |
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unset(CUDA_ARCH_BIN CACHE) |
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unset(CUDA_ARCH_PTX CACHE) |
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endif() |
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set(__cuda_arch_ptx "") |
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if(CUDA_GENERATION STREQUAL "Fermi") |
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set(__cuda_arch_bin "2.0 2.1(2.0)") |
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elseif(CUDA_GENERATION STREQUAL "Kepler") |
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set(__cuda_arch_bin "3.0") |
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elseif(CUDA_GENERATION STREQUAL "Auto") |
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execute_process( COMMAND "${CUDA_NVCC_EXECUTABLE}" "${OpenCV_SOURCE_DIR}/cmake/checks/OpenCVDetectCudaArch.cu" "--run" |
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WORKING_DIRECTORY "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/" |
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RESULT_VARIABLE _nvcc_res OUTPUT_VARIABLE _nvcc_out |
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ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE) |
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if(NOT _nvcc_res EQUAL 0) |
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message(STATUS "Automatic detection of CUDA generation failed. Going to build for all known architectures.") |
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else() |
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set(__cuda_arch_bin "${_nvcc_out}") |
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endif() |
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endif() |
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if(NOT DEFINED __cuda_arch_bin) |
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set(__cuda_arch_bin "1.1 1.2 1.3 2.0 2.1(2.0) 3.0") |
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set(__cuda_arch_ptx "2.0 3.0") |
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endif() |
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set(CUDA_ARCH_BIN ${__cuda_arch_bin} CACHE STRING "Specify 'real' GPU architectures to build binaries for, BIN(PTX) format is supported") |
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set(CUDA_ARCH_PTX ${__cuda_arch_ptx} CACHE STRING "Specify 'virtual' PTX architectures to build PTX intermediate code for") |
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string(REGEX REPLACE "\\." "" ARCH_BIN_NO_POINTS "${CUDA_ARCH_BIN}") |
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string(REGEX REPLACE "\\." "" ARCH_PTX_NO_POINTS "${CUDA_ARCH_PTX}") |
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# Ckeck if user specified 1.0 compute capability: we don't support it |
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string(REGEX MATCH "1.0" HAS_ARCH_10 "${CUDA_ARCH_BIN} ${CUDA_ARCH_PTX}") |
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set(CUDA_ARCH_BIN_OR_PTX_10 0) |
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if(NOT ${HAS_ARCH_10} STREQUAL "") |
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set(CUDA_ARCH_BIN_OR_PTX_10 1) |
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endif() |
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# NVCC flags to be set |
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set(NVCC_FLAGS_EXTRA "") |
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# These vars will be passed into the templates |
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set(OPENCV_CUDA_ARCH_BIN "") |
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set(OPENCV_CUDA_ARCH_PTX "") |
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set(OPENCV_CUDA_ARCH_FEATURES "") |
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# Tell NVCC to add binaries for the specified GPUs |
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string(REGEX MATCHALL "[0-9()]+" ARCH_LIST "${ARCH_BIN_NO_POINTS}") |
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foreach(ARCH IN LISTS ARCH_LIST) |
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if(ARCH MATCHES "([0-9]+)\\(([0-9]+)\\)") |
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# User explicitly specified PTX for the concrete BIN |
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set(NVCC_FLAGS_EXTRA ${NVCC_FLAGS_EXTRA} -gencode arch=compute_${CMAKE_MATCH_2},code=sm_${CMAKE_MATCH_1}) |
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set(OPENCV_CUDA_ARCH_BIN "${OPENCV_CUDA_ARCH_BIN} ${CMAKE_MATCH_1}") |
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set(OPENCV_CUDA_ARCH_FEATURES "${OPENCV_CUDA_ARCH_FEATURES} ${CMAKE_MATCH_2}") |
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else() |
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# User didn't explicitly specify PTX for the concrete BIN, we assume PTX=BIN |
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set(NVCC_FLAGS_EXTRA ${NVCC_FLAGS_EXTRA} -gencode arch=compute_${ARCH},code=sm_${ARCH}) |
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set(OPENCV_CUDA_ARCH_BIN "${OPENCV_CUDA_ARCH_BIN} ${ARCH}") |
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set(OPENCV_CUDA_ARCH_FEATURES "${OPENCV_CUDA_ARCH_FEATURES} ${ARCH}") |
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endif() |
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endforeach() |
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# Tell NVCC to add PTX intermediate code for the specified architectures |
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string(REGEX MATCHALL "[0-9]+" ARCH_LIST "${ARCH_PTX_NO_POINTS}") |
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foreach(ARCH IN LISTS ARCH_LIST) |
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set(NVCC_FLAGS_EXTRA ${NVCC_FLAGS_EXTRA} -gencode arch=compute_${ARCH},code=compute_${ARCH}) |
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set(OPENCV_CUDA_ARCH_PTX "${OPENCV_CUDA_ARCH_PTX} ${ARCH}") |
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set(OPENCV_CUDA_ARCH_FEATURES "${OPENCV_CUDA_ARCH_FEATURES} ${ARCH}") |
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endforeach() |
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if(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "arm") |
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set(CUDA_NVCC_FLAGS "${CUDA_NVCC_FLAGS} --target-cpu-architecture=ARM") |
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endif() |
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# These vars will be processed in other scripts |
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set(CUDA_NVCC_FLAGS ${CUDA_NVCC_FLAGS} ${NVCC_FLAGS_EXTRA}) |
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set(OpenCV_CUDA_CC "${NVCC_FLAGS_EXTRA}") |
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message(STATUS "CUDA NVCC target flags: ${CUDA_NVCC_FLAGS}") |
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OCV_OPTION(CUDA_FAST_MATH "Enable --use_fast_math for CUDA compiler " OFF) |
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if(CUDA_FAST_MATH) |
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set(CUDA_NVCC_FLAGS ${CUDA_NVCC_FLAGS} --use_fast_math) |
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endif() |
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mark_as_advanced(CUDA_BUILD_CUBIN CUDA_BUILD_EMULATION CUDA_VERBOSE_BUILD CUDA_SDK_ROOT_DIR) |
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macro(ocv_cuda_compile VAR) |
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foreach(var CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_RELEASE CMAKE_CXX_FLAGS_DEBUG) |
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set(${var}_backup_in_cuda_compile_ "${${var}}") |
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# we remove /EHa as it generates warnings under windows |
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string(REPLACE "/EHa" "" ${var} "${${var}}") |
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# we remove -ggdb3 flag as it leads to preprocessor errors when compiling CUDA files (CUDA 4.1) |
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string(REPLACE "-ggdb3" "" ${var} "${${var}}") |
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# we remove -Wsign-promo as it generates warnings under linux |
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string(REPLACE "-Wsign-promo" "" ${var} "${${var}}") |
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endforeach() |
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if(BUILD_SHARED_LIBS) |
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set(CUDA_NVCC_FLAGS ${CUDA_NVCC_FLAGS} -Xcompiler -DCVAPI_EXPORTS) |
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endif() |
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if(UNIX OR APPLE) |
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set(CUDA_NVCC_FLAGS ${CUDA_NVCC_FLAGS} -Xcompiler -fPIC) |
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endif() |
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if(APPLE) |
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set(CUDA_NVCC_FLAGS ${CUDA_NVCC_FLAGS} -Xcompiler -fno-finite-math-only) |
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endif() |
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# disabled because of multiple warnings during building nvcc auto generated files |
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if(CMAKE_COMPILER_IS_GNUCXX AND CMAKE_GCC_REGEX_VERSION VERSION_GREATER "4.6.0") |
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ocv_warnings_disable(CMAKE_CXX_FLAGS -Wunused-but-set-variable) |
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endif() |
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CUDA_COMPILE(${VAR} ${ARGN}) |
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foreach(var CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_RELEASE CMAKE_CXX_FLAGS_DEBUG) |
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set(${var} "${${var}_backup_in_cuda_compile_}") |
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unset(${var}_backup_in_cuda_compile_) |
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endforeach() |
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endmacro() |
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else() |
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unset(CUDA_ARCH_BIN CACHE) |
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unset(CUDA_ARCH_PTX CACHE) |
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endif()
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