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FindCUDAToolkit: Factor out discovery code into a separate file
This allows for re-use in other parts of the code, that require the CUDA toolkit location, but can't or may not want to use the full `FindCUDAToolkit`.
This commit is contained in:
Raul Tambre
parent
70be10cbf4
commit
dc2eae1f91
@ -473,168 +473,8 @@ Result variables
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#
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###############################################################################
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# For NVCC we can easily deduce the SDK binary directory from the compiler path.
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if(CMAKE_CUDA_COMPILER_LOADED AND NOT CUDAToolkit_BIN_DIR AND CMAKE_CUDA_COMPILER_ID STREQUAL "NVIDIA")
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get_filename_component(cuda_dir "${CMAKE_CUDA_COMPILER}" DIRECTORY)
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set(CUDAToolkit_BIN_DIR "${cuda_dir}" CACHE PATH "")
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mark_as_advanced(CUDAToolkit_BIN_DIR)
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unset(cuda_dir)
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endif()
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# Try language- or user-provided path first.
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if(CUDAToolkit_BIN_DIR)
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find_program(CUDAToolkit_NVCC_EXECUTABLE
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NAMES nvcc nvcc.exe
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PATHS ${CUDAToolkit_BIN_DIR}
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NO_DEFAULT_PATH
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)
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endif()
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# Search using CUDAToolkit_ROOT
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find_program(CUDAToolkit_NVCC_EXECUTABLE
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NAMES nvcc nvcc.exe
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PATHS ENV CUDA_PATH
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PATH_SUFFIXES bin
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)
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# If the user specified CUDAToolkit_ROOT but nvcc could not be found, this is an error.
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if (NOT CUDAToolkit_NVCC_EXECUTABLE AND (DEFINED CUDAToolkit_ROOT OR DEFINED ENV{CUDAToolkit_ROOT}))
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# Declare error messages now, print later depending on find_package args.
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set(fail_base "Could not find nvcc executable in path specified by")
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set(cuda_root_fail "${fail_base} CUDAToolkit_ROOT=${CUDAToolkit_ROOT}")
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set(env_cuda_root_fail "${fail_base} environment variable CUDAToolkit_ROOT=$ENV{CUDAToolkit_ROOT}")
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if (CUDAToolkit_FIND_REQUIRED)
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if (DEFINED CUDAToolkit_ROOT)
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message(FATAL_ERROR ${cuda_root_fail})
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elseif (DEFINED ENV{CUDAToolkit_ROOT})
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message(FATAL_ERROR ${env_cuda_root_fail})
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endif()
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else()
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if (NOT CUDAToolkit_FIND_QUIETLY)
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if (DEFINED CUDAToolkit_ROOT)
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message(STATUS ${cuda_root_fail})
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elseif (DEFINED ENV{CUDAToolkit_ROOT})
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message(STATUS ${env_cuda_root_fail})
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endif()
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endif()
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set(CUDAToolkit_FOUND FALSE)
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unset(fail_base)
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unset(cuda_root_fail)
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unset(env_cuda_root_fail)
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return()
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endif()
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endif()
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# CUDAToolkit_ROOT cmake / env variable not specified, try platform defaults.
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#
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# - Linux: /usr/local/cuda-X.Y
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# - macOS: /Developer/NVIDIA/CUDA-X.Y
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# - Windows: C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\vX.Y
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#
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# We will also search the default symlink location /usr/local/cuda first since
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# if CUDAToolkit_ROOT is not specified, it is assumed that the symlinked
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# directory is the desired location.
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if (NOT CUDAToolkit_NVCC_EXECUTABLE)
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if (UNIX)
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if (NOT APPLE)
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set(platform_base "/usr/local/cuda-")
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else()
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set(platform_base "/Developer/NVIDIA/CUDA-")
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endif()
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else()
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set(platform_base "C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v")
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endif()
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# Build out a descending list of possible cuda installations, e.g.
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file(GLOB possible_paths "${platform_base}*")
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# Iterate the glob results and create a descending list.
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set(possible_versions)
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foreach (p ${possible_paths})
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# Extract version number from end of string
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string(REGEX MATCH "[0-9][0-9]?\\.[0-9]$" p_version ${p})
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if (IS_DIRECTORY ${p} AND p_version)
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list(APPEND possible_versions ${p_version})
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endif()
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endforeach()
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# Cannot use list(SORT) because that is alphabetical, we need numerical.
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# NOTE: this is not an efficient sorting strategy. But even if a user had
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# every possible version of CUDA installed, this wouldn't create any
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# significant overhead.
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set(versions)
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foreach (v ${possible_versions})
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list(LENGTH versions num_versions)
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# First version, nothing to compare with so just append.
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if (num_versions EQUAL 0)
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list(APPEND versions ${v})
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else()
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# Loop through list. Insert at an index when comparison is
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# VERSION_GREATER since we want a descending list. Duplicates will not
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# happen since this came from a glob list of directories.
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set(i 0)
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set(early_terminate FALSE)
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while (i LESS num_versions)
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list(GET versions ${i} curr)
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if (v VERSION_GREATER curr)
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list(INSERT versions ${i} ${v})
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set(early_terminate TRUE)
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break()
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endif()
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math(EXPR i "${i} + 1")
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endwhile()
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# If it did not get inserted, place it at the end.
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if (NOT early_terminate)
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list(APPEND versions ${v})
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endif()
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endif()
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endforeach()
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# With a descending list of versions, populate possible paths to search.
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set(search_paths)
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foreach (v ${versions})
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list(APPEND search_paths "${platform_base}${v}")
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endforeach()
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# Force the global default /usr/local/cuda to the front on Unix.
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if (UNIX)
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list(INSERT search_paths 0 "/usr/local/cuda")
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endif()
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# Now search for nvcc again using the platform default search paths.
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find_program(CUDAToolkit_NVCC_EXECUTABLE
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NAMES nvcc nvcc.exe
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PATHS ${search_paths}
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PATH_SUFFIXES bin
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)
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# We are done with these variables now, cleanup for caller.
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unset(platform_base)
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unset(possible_paths)
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unset(possible_versions)
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unset(versions)
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unset(i)
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unset(early_terminate)
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unset(search_paths)
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if (NOT CUDAToolkit_NVCC_EXECUTABLE)
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if (CUDAToolkit_FIND_REQUIRED)
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message(FATAL_ERROR "Could not find nvcc, please set CUDAToolkit_ROOT.")
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elseif(NOT CUDAToolkit_FIND_QUIETLY)
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message(STATUS "Could not find nvcc, please set CUDAToolkit_ROOT.")
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endif()
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set(CUDAToolkit_FOUND FALSE)
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return()
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endif()
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endif()
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if(NOT CUDAToolkit_BIN_DIR AND CUDAToolkit_NVCC_EXECUTABLE)
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get_filename_component(cuda_dir "${CUDAToolkit_NVCC_EXECUTABLE}" DIRECTORY)
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set(CUDAToolkit_BIN_DIR "${cuda_dir}" CACHE PATH "" FORCE)
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mark_as_advanced(CUDAToolkit_BIN_DIR)
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unset(cuda_dir)
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endif()
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# Include shared CUDA toolkit location code.
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include(Internal/CUDAToolkit)
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if(CUDAToolkit_NVCC_EXECUTABLE AND
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CUDAToolkit_NVCC_EXECUTABLE STREQUAL CMAKE_CUDA_COMPILER)
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@ -658,72 +498,22 @@ else()
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unset(NVCC_OUT)
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endif()
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get_filename_component(CUDAToolkit_ROOT_DIR ${CUDAToolkit_BIN_DIR} DIRECTORY ABSOLUTE)
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# Handle cross compilation
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if(CMAKE_CROSSCOMPILING)
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if(CMAKE_SYSTEM_PROCESSOR STREQUAL "armv7-a")
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# Support for NVPACK
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set (CUDAToolkit_TARGET_NAME "armv7-linux-androideabi")
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elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "arm")
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# Support for arm cross compilation
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set(CUDAToolkit_TARGET_NAME "armv7-linux-gnueabihf")
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elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64")
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# Support for aarch64 cross compilation
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if (ANDROID_ARCH_NAME STREQUAL "arm64")
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set(CUDAToolkit_TARGET_NAME "aarch64-linux-androideabi")
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else()
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set(CUDAToolkit_TARGET_NAME "aarch64-linux")
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endif (ANDROID_ARCH_NAME STREQUAL "arm64")
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elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64")
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set(CUDAToolkit_TARGET_NAME "x86_64-linux")
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endif()
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if (EXISTS "${CUDAToolkit_ROOT_DIR}/targets/${CUDAToolkit_TARGET_NAME}")
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set(CUDAToolkit_TARGET_DIR "${CUDAToolkit_ROOT_DIR}/targets/${CUDAToolkit_TARGET_NAME}")
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# add known CUDA target root path to the set of directories we search for programs, libraries and headers
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list(PREPEND CMAKE_FIND_ROOT_PATH "${CUDAToolkit_TARGET_DIR}")
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# Mark that we need to pop the root search path changes after we have
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# found all cuda libraries so that searches for our cross-compilation
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# libraries work when another cuda sdk is in CMAKE_PREFIX_PATH or
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# PATh
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set(_CUDAToolkit_Pop_ROOT_PATH True)
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endif()
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else()
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# Not cross compiling
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set(CUDAToolkit_TARGET_DIR "${CUDAToolkit_ROOT_DIR}")
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# Now that we have the real ROOT_DIR, find components inside it.
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list(APPEND CMAKE_PREFIX_PATH ${CUDAToolkit_ROOT_DIR})
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# Mark that we need to pop the prefix path changes after we have
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# found the cudart library.
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set(_CUDAToolkit_Pop_Prefix True)
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if(NOT CUDA_CUDART AND NOT CUDAToolkit_FIND_QUIETLY)
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message(STATUS "Unable to find cudart library.")
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endif()
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# Find the include/ directory
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find_path(CUDAToolkit_INCLUDE_DIR
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NAMES cuda_runtime.h
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)
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# And find the CUDA Runtime Library libcudart
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# Find the CUDA Runtime Library libcudart
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find_library(CUDA_CUDART
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NAMES cudart
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PATH_SUFFIXES lib64 lib/x64
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)
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if (NOT CUDA_CUDART)
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if(NOT CUDA_CUDART)
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find_library(CUDA_CUDART
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NAMES cudart
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PATH_SUFFIXES lib64/stubs lib/x64/stubs
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)
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endif()
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if (NOT CUDA_CUDART AND NOT CUDAToolkit_FIND_QUIETLY)
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message(STATUS "Unable to find cudart library.")
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endif()
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unset(CUDAToolkit_ROOT_DIR)
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if(_CUDAToolkit_Pop_Prefix)
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list(REMOVE_AT CMAKE_PREFIX_PATH -1)
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@ -749,8 +539,8 @@ mark_as_advanced(CUDA_CUDART
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#-----------------------------------------------------------------------------
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# Construct result variables
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if(CUDAToolkit_FOUND)
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set(CUDAToolkit_INCLUDE_DIRS ${CUDAToolkit_INCLUDE_DIR})
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get_filename_component(CUDAToolkit_LIBRARY_DIR ${CUDA_CUDART} DIRECTORY ABSOLUTE)
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set(CUDAToolkit_INCLUDE_DIRS ${CUDAToolkit_INCLUDE_DIR})
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get_filename_component(CUDAToolkit_LIBRARY_DIR ${CUDA_CUDART} DIRECTORY ABSOLUTE)
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endif()
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#-----------------------------------------------------------------------------
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225
Modules/Internal/CUDAToolkit.cmake
Normal file
225
Modules/Internal/CUDAToolkit.cmake
Normal file
@ -0,0 +1,225 @@
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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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# This file is for sharing code for finding basic CUDA toolkit information between
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# CMakeDetermineCUDACompiler.cmake and FindCUDAToolkit.cmake.
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# For NVCC we can easily deduce the SDK binary directory from the compiler path.
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if(CMAKE_CUDA_COMPILER_LOADED AND NOT CUDAToolkit_BIN_DIR AND CMAKE_CUDA_COMPILER_ID STREQUAL "NVIDIA")
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get_filename_component(cuda_dir "${CMAKE_CUDA_COMPILER}" DIRECTORY)
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set(CUDAToolkit_BIN_DIR "${cuda_dir}" CACHE PATH "")
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mark_as_advanced(CUDAToolkit_BIN_DIR)
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unset(cuda_dir)
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endif()
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# Try language- or user-provided path first.
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if(CUDAToolkit_BIN_DIR)
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find_program(CUDAToolkit_NVCC_EXECUTABLE
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NAMES nvcc nvcc.exe
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PATHS ${CUDAToolkit_BIN_DIR}
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NO_DEFAULT_PATH
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)
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endif()
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# Search using CUDAToolkit_ROOT
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find_program(CUDAToolkit_NVCC_EXECUTABLE
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NAMES nvcc nvcc.exe
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PATHS ENV CUDA_PATH
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PATH_SUFFIXES bin
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)
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# If the user specified CUDAToolkit_ROOT but nvcc could not be found, this is an error.
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if(NOT CUDAToolkit_NVCC_EXECUTABLE AND (DEFINED CUDAToolkit_ROOT OR DEFINED ENV{CUDAToolkit_ROOT}))
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# Declare error messages now, print later depending on find_package args.
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set(fail_base "Could not find nvcc executable in path specified by")
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set(cuda_root_fail "${fail_base} CUDAToolkit_ROOT=${CUDAToolkit_ROOT}")
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set(env_cuda_root_fail "${fail_base} environment variable CUDAToolkit_ROOT=$ENV{CUDAToolkit_ROOT}")
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if(CUDAToolkit_FIND_REQUIRED)
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if(DEFINED CUDAToolkit_ROOT)
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message(FATAL_ERROR ${cuda_root_fail})
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elseif(DEFINED ENV{CUDAToolkit_ROOT})
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message(FATAL_ERROR ${env_cuda_root_fail})
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endif()
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else()
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if(NOT CUDAToolkit_FIND_QUIETLY)
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if(DEFINED CUDAToolkit_ROOT)
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message(STATUS ${cuda_root_fail})
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elseif(DEFINED ENV{CUDAToolkit_ROOT})
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message(STATUS ${env_cuda_root_fail})
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endif()
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endif()
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set(CUDAToolkit_FOUND FALSE)
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unset(fail_base)
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unset(cuda_root_fail)
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unset(env_cuda_root_fail)
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return()
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endif()
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endif()
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# CUDAToolkit_ROOT cmake / env variable not specified, try platform defaults.
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#
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# - Linux: /usr/local/cuda-X.Y
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# - macOS: /Developer/NVIDIA/CUDA-X.Y
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# - Windows: C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\vX.Y
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#
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# We will also search the default symlink location /usr/local/cuda first since
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# if CUDAToolkit_ROOT is not specified, it is assumed that the symlinked
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# directory is the desired location.
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if(NOT CUDAToolkit_NVCC_EXECUTABLE)
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if(UNIX)
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if(NOT APPLE)
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set(platform_base "/usr/local/cuda-")
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else()
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set(platform_base "/Developer/NVIDIA/CUDA-")
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endif()
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else()
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set(platform_base "C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v")
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endif()
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# Build out a descending list of possible cuda installations, e.g.
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file(GLOB possible_paths "${platform_base}*")
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# Iterate the glob results and create a descending list.
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set(possible_versions)
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foreach (p ${possible_paths})
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# Extract version number from end of string
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string(REGEX MATCH "[0-9][0-9]?\\.[0-9]$" p_version ${p})
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if(IS_DIRECTORY ${p} AND p_version)
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list(APPEND possible_versions ${p_version})
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endif()
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endforeach()
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# Cannot use list(SORT) because that is alphabetical, we need numerical.
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# NOTE: this is not an efficient sorting strategy. But even if a user had
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# every possible version of CUDA installed, this wouldn't create any
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# significant overhead.
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set(versions)
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foreach (v ${possible_versions})
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list(LENGTH versions num_versions)
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# First version, nothing to compare with so just append.
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if(num_versions EQUAL 0)
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list(APPEND versions ${v})
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else()
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# Loop through list. Insert at an index when comparison is
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# VERSION_GREATER since we want a descending list. Duplicates will not
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# happen since this came from a glob list of directories.
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set(i 0)
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set(early_terminate FALSE)
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while (i LESS num_versions)
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list(GET versions ${i} curr)
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if(v VERSION_GREATER curr)
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list(INSERT versions ${i} ${v})
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set(early_terminate TRUE)
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break()
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endif()
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math(EXPR i "${i} + 1")
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endwhile()
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# If it did not get inserted, place it at the end.
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if(NOT early_terminate)
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list(APPEND versions ${v})
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endif()
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endif()
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endforeach()
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# With a descending list of versions, populate possible paths to search.
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set(search_paths)
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foreach (v ${versions})
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list(APPEND search_paths "${platform_base}${v}")
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endforeach()
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# Force the global default /usr/local/cuda to the front on Unix.
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if(UNIX)
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list(INSERT search_paths 0 "/usr/local/cuda")
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endif()
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# Now search for nvcc again using the platform default search paths.
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find_program(CUDAToolkit_NVCC_EXECUTABLE
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NAMES nvcc nvcc.exe
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PATHS ${search_paths}
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PATH_SUFFIXES bin
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)
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# We are done with these variables now, cleanup for caller.
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unset(platform_base)
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unset(possible_paths)
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unset(possible_versions)
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unset(versions)
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unset(i)
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unset(early_terminate)
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unset(search_paths)
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if(NOT CUDAToolkit_NVCC_EXECUTABLE)
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if(CUDAToolkit_FIND_REQUIRED)
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message(FATAL_ERROR "Could not find nvcc, please set CUDAToolkit_ROOT.")
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elseif(NOT CUDAToolkit_FIND_QUIETLY)
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message(STATUS "Could not find nvcc, please set CUDAToolkit_ROOT.")
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endif()
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set(CUDAToolkit_FOUND FALSE)
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return()
|
||||
endif()
|
||||
endif()
|
||||
|
||||
if(NOT CUDAToolkit_BIN_DIR AND CUDAToolkit_NVCC_EXECUTABLE)
|
||||
get_filename_component(cuda_dir "${CUDAToolkit_NVCC_EXECUTABLE}" DIRECTORY)
|
||||
set(CUDAToolkit_BIN_DIR "${cuda_dir}" CACHE PATH "" FORCE)
|
||||
mark_as_advanced(CUDAToolkit_BIN_DIR)
|
||||
unset(cuda_dir)
|
||||
endif()
|
||||
|
||||
get_filename_component(CUDAToolkit_ROOT_DIR ${CUDAToolkit_BIN_DIR} DIRECTORY ABSOLUTE)
|
||||
|
||||
# Handle cross compilation
|
||||
if(CMAKE_CROSSCOMPILING)
|
||||
if(CMAKE_SYSTEM_PROCESSOR STREQUAL "armv7-a")
|
||||
# Support for NVPACK
|
||||
set(CUDAToolkit_TARGET_NAME "armv7-linux-androideabi")
|
||||
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "arm")
|
||||
# Support for arm cross compilation
|
||||
set(CUDAToolkit_TARGET_NAME "armv7-linux-gnueabihf")
|
||||
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64")
|
||||
# Support for aarch64 cross compilation
|
||||
if(ANDROID_ARCH_NAME STREQUAL "arm64")
|
||||
set(CUDAToolkit_TARGET_NAME "aarch64-linux-androideabi")
|
||||
else()
|
||||
set(CUDAToolkit_TARGET_NAME "aarch64-linux")
|
||||
endif(ANDROID_ARCH_NAME STREQUAL "arm64")
|
||||
elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64")
|
||||
set(CUDAToolkit_TARGET_NAME "x86_64-linux")
|
||||
endif()
|
||||
|
||||
if(EXISTS "${CUDAToolkit_ROOT_DIR}/targets/${CUDAToolkit_TARGET_NAME}")
|
||||
set(CUDAToolkit_TARGET_DIR "${CUDAToolkit_ROOT_DIR}/targets/${CUDAToolkit_TARGET_NAME}")
|
||||
# add known CUDA target root path to the set of directories we search for programs, libraries and headers
|
||||
list(PREPEND CMAKE_FIND_ROOT_PATH "${CUDAToolkit_TARGET_DIR}")
|
||||
|
||||
# Mark that we need to pop the root search path changes after we have
|
||||
# found all cuda libraries so that searches for our cross-compilation
|
||||
# libraries work when another cuda sdk is in CMAKE_PREFIX_PATH or
|
||||
# PATh
|
||||
set(_CUDAToolkit_Pop_ROOT_PATH True)
|
||||
endif()
|
||||
else()
|
||||
# Not cross compiling
|
||||
set(CUDAToolkit_TARGET_DIR "${CUDAToolkit_ROOT_DIR}")
|
||||
# Now that we have the real ROOT_DIR, find components inside it.
|
||||
list(APPEND CMAKE_PREFIX_PATH ${CUDAToolkit_ROOT_DIR})
|
||||
|
||||
# Mark that we need to pop the prefix path changes after we have
|
||||
# found the cudart library.
|
||||
set(_CUDAToolkit_Pop_Prefix True)
|
||||
endif()
|
||||
|
||||
# Find the include/ directory
|
||||
find_path(CUDAToolkit_INCLUDE_DIR
|
||||
NAMES cuda_runtime.h
|
||||
)
|
||||
|
||||
# Find a tentative CUDAToolkit_LIBRARY_DIR. FindCUDAToolkit overrides it by searching for the CUDA runtime,
|
||||
# but we can't do that here, as CMakeDetermineCUDACompiler wants to use it before the variables necessary
|
||||
# for find_library() have been initialized.
|
||||
if(EXISTS "${CUDAToolkit_TARGET_DIR}/lib64")
|
||||
set(CUDAToolkit_LIBRARY_DIR "${CUDAToolkit_TARGET_DIR}/lib64")
|
||||
elseif(EXISTS "${CUDAToolkit_TARGET_DIR}/lib")
|
||||
set(CUDAToolkit_LIBRARY_DIR "${CUDAToolkit_TARGET_DIR}/lib")
|
||||
endif()
|
||||
Loading…
Reference in New Issue
Block a user