103 lines
3.8 KiB
CMake
103 lines
3.8 KiB
CMake
if(${CMAKE_VERSION} VERSION_LESS "2.8.3")
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message(STATUS WITH_CUDA flag requires CMake 2.8.3. CUDA support is disabled.)
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return()
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endif()
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find_package(CUDA 4.1)
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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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message(STATUS "CUDA detected: " ${CUDA_VERSION})
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if(${CUDA_VERSION_STRING} VERSION_GREATER "4.1")
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set(CUDA_ARCH_BIN "1.1 1.2 1.3 2.0 2.1(2.0) 3.0" CACHE STRING "Specify 'real' GPU architectures to build binaries for, BIN(PTX) format is supported")
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else()
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set(CUDA_ARCH_BIN "1.1 1.2 1.3 2.0 2.1(2.0)" CACHE STRING "Specify 'real' GPU architectures to build binaries for, BIN(PTX) format is supported")
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endif()
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set(CUDA_ARCH_PTX "2.0" 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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# 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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unset(CUDA_npp_LIBRARY CACHE)
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find_cuda_helper_libs(npp)
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macro(OCV_CUDA_COMPILE VAR)
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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 ${CUDA_NVCC_FLAGS} -Xcompiler -fno-finite-math-only)
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endif()
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string(REPLACE "-Wsign-promo" "" CUDA_NVCC_FLAGS "${CUDA_NVCC_FLAGS}")
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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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set(CMAKE_CXX_FLAGS_DEBUG_ ${CMAKE_CXX_FLAGS_DEBUG})
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string(REPLACE "-ggdb3" "" CMAKE_CXX_FLAGS_DEBUG ${CMAKE_CXX_FLAGS_DEBUG})
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CUDA_COMPILE(${VAR} ${ARGN})
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set(CMAKE_CXX_DEBUG_FLAGS ${CMAKE_CXX_FLAGS_DEBUG_})
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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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