mirror of
https://github.com/Kitware/CMake.git
synced 2026-01-06 05:40:54 -06:00
e55b21e24e
Since commit 0d0145138f (CUDA: Add abstraction for cuda runtime
selection, 2019-11-29, v3.17.0-rc1~83^2) we add CUDA runtime library
selection flags by default.
To maintain backwards compatibility the default CUDA runtime
library needs to be computed based on what libraries are found
on the initial compiler invocation. For example a toolchain
could establish initial flags that have all CUDA compilations
using the runtime version, and if we don't detect this we will
try to link to both the static and shared runtime.
Co-Author: Brad King <brad.king@kitware.com>
Fixes: #20708
253 lines
11 KiB
CMake
253 lines
11 KiB
CMake
# 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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include(${CMAKE_ROOT}/Modules/CMakeDetermineCompiler.cmake)
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include(${CMAKE_ROOT}/Modules//CMakeParseImplicitLinkInfo.cmake)
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if( NOT ( ("${CMAKE_GENERATOR}" MATCHES "Make") OR
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("${CMAKE_GENERATOR}" MATCHES "Ninja") OR
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("${CMAKE_GENERATOR}" MATCHES "Visual Studio (1|[9][0-9])") ) )
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message(FATAL_ERROR "CUDA language not currently supported by \"${CMAKE_GENERATOR}\" generator")
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endif()
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if(${CMAKE_GENERATOR} MATCHES "Visual Studio")
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else()
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if(NOT CMAKE_CUDA_COMPILER)
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set(CMAKE_CUDA_COMPILER_INIT NOTFOUND)
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# prefer the environment variable CUDACXX
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if(NOT $ENV{CUDACXX} STREQUAL "")
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get_filename_component(CMAKE_CUDA_COMPILER_INIT $ENV{CUDACXX} PROGRAM PROGRAM_ARGS CMAKE_CUDA_FLAGS_ENV_INIT)
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if(CMAKE_CUDA_FLAGS_ENV_INIT)
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set(CMAKE_CUDA_COMPILER_ARG1 "${CMAKE_CUDA_FLAGS_ENV_INIT}" CACHE STRING "First argument to CXX compiler")
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endif()
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if(NOT EXISTS ${CMAKE_CUDA_COMPILER_INIT})
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message(FATAL_ERROR "Could not find compiler set in environment variable CUDACXX:\n$ENV{CUDACXX}.\n${CMAKE_CUDA_COMPILER_INIT}")
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endif()
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endif()
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# finally list compilers to try
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if(NOT CMAKE_CUDA_COMPILER_INIT)
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set(CMAKE_CUDA_COMPILER_LIST nvcc)
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endif()
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_cmake_find_compiler(CUDA)
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else()
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_cmake_find_compiler_path(CUDA)
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endif()
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mark_as_advanced(CMAKE_CUDA_COMPILER)
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endif()
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#Allow the user to specify a host compiler
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if(NOT $ENV{CUDAHOSTCXX} STREQUAL "")
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get_filename_component(CMAKE_CUDA_HOST_COMPILER $ENV{CUDAHOSTCXX} PROGRAM)
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if(NOT EXISTS ${CMAKE_CUDA_HOST_COMPILER})
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message(FATAL_ERROR "Could not find compiler set in environment variable CUDAHOSTCXX:\n$ENV{CUDAHOSTCXX}.\n${CMAKE_CUDA_HOST_COMPILER}")
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endif()
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endif()
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# Build a small source file to identify the compiler.
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if(NOT CMAKE_CUDA_COMPILER_ID_RUN)
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set(CMAKE_CUDA_COMPILER_ID_RUN 1)
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# Try to identify the compiler.
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set(CMAKE_CUDA_COMPILER_ID)
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set(CMAKE_CUDA_PLATFORM_ID)
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file(READ ${CMAKE_ROOT}/Modules/CMakePlatformId.h.in
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CMAKE_CUDA_COMPILER_ID_PLATFORM_CONTENT)
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list(APPEND CMAKE_CUDA_COMPILER_ID_MATCH_VENDORS NVIDIA)
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set(CMAKE_CUDA_COMPILER_ID_MATCH_VENDOR_REGEX_NVIDIA "nvcc: NVIDIA \(R\) Cuda compiler driver")
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set(CMAKE_CXX_COMPILER_ID_TOOL_MATCH_REGEX "\nLd[^\n]*(\n[ \t]+[^\n]*)*\n[ \t]+([^ \t\r\n]+)[^\r\n]*-o[^\r\n]*CompilerIdCUDA/(\\./)?(CompilerIdCUDA.xctest/)?CompilerIdCUDA[ \t\n\\\"]")
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set(CMAKE_CXX_COMPILER_ID_TOOL_MATCH_INDEX 2)
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set(CMAKE_CUDA_COMPILER_ID_FLAGS_ALWAYS -v --keep --keep-dir tmp)
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if(CMAKE_CUDA_HOST_COMPILER)
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list(APPEND CMAKE_CUDA_COMPILER_ID_FLAGS_ALWAYS "-ccbin=${CMAKE_CUDA_HOST_COMPILER}")
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endif()
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include(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerId.cmake)
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CMAKE_DETERMINE_COMPILER_ID(CUDA CUDAFLAGS CMakeCUDACompilerId.cu)
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endif()
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set(_CMAKE_PROCESSING_LANGUAGE "CUDA")
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include(CMakeFindBinUtils)
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unset(_CMAKE_PROCESSING_LANGUAGE)
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if(MSVC_CUDA_ARCHITECTURE_ID)
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set(SET_MSVC_CUDA_ARCHITECTURE_ID
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"set(MSVC_CUDA_ARCHITECTURE_ID ${MSVC_CUDA_ARCHITECTURE_ID})")
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endif()
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if(${CMAKE_GENERATOR} MATCHES "Visual Studio")
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set(CMAKE_CUDA_HOST_LINK_LAUNCHER "${CMAKE_LINKER}")
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set(CMAKE_CUDA_HOST_IMPLICIT_LINK_LIBRARIES "")
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set(CMAKE_CUDA_HOST_IMPLICIT_LINK_DIRECTORIES "")
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set(CMAKE_CUDA_HOST_IMPLICIT_LINK_FRAMEWORK_DIRECTORIES "")
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# We do not currently detect CMAKE_CUDA_HOST_IMPLICIT_LINK_LIBRARIES but we
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# do need to detect CMAKE_CUDA_RUNTIME_LIBRARY_DEFAULT from the compiler by
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# looking at which cudart library exists in the implicit link libraries passed
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# to the host linker.
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if(CMAKE_CUDA_COMPILER_PRODUCED_OUTPUT MATCHES "link\\.exe [^\n]*cudart_static\\.lib")
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set(CMAKE_CUDA_RUNTIME_LIBRARY_DEFAULT "STATIC")
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elseif(CMAKE_CUDA_COMPILER_PRODUCED_OUTPUT MATCHES "link\\.exe [^\n]*cudart\\.lib")
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set(CMAKE_CUDA_RUNTIME_LIBRARY_DEFAULT "SHARED")
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else()
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set(CMAKE_CUDA_RUNTIME_LIBRARY_DEFAULT "NONE")
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endif()
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set(_SET_CMAKE_CUDA_RUNTIME_LIBRARY_DEFAULT
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"set(CMAKE_CUDA_RUNTIME_LIBRARY_DEFAULT \"${CMAKE_CUDA_RUNTIME_LIBRARY_DEFAULT}\")")
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elseif(CMAKE_CUDA_COMPILER_ID STREQUAL NVIDIA)
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set(_nvcc_log "")
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string(REPLACE "\r" "" _nvcc_output_orig "${CMAKE_CUDA_COMPILER_PRODUCED_OUTPUT}")
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if(_nvcc_output_orig MATCHES "#\\\$ +PATH= *([^\n]*)\n")
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set(_nvcc_path "${CMAKE_MATCH_1}")
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string(APPEND _nvcc_log " found 'PATH=' string: [${_nvcc_path}]\n")
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string(REPLACE ":" ";" _nvcc_path "${_nvcc_path}")
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else()
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set(_nvcc_path "")
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string(REPLACE "\n" "\n " _nvcc_output_log "\n${_nvcc_output_orig}")
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string(APPEND _nvcc_log " no 'PATH=' string found in nvcc output:${_nvcc_output_log}\n")
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endif()
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if(_nvcc_output_orig MATCHES "#\\\$ +LIBRARIES= *([^\n]*)\n")
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set(_nvcc_libraries "${CMAKE_MATCH_1}")
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string(APPEND _nvcc_log " found 'LIBRARIES=' string: [${_nvcc_libraries}]\n")
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else()
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set(_nvcc_libraries "")
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string(REPLACE "\n" "\n " _nvcc_output_log "\n${_nvcc_output_orig}")
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string(APPEND _nvcc_log " no 'LIBRARIES=' string found in nvcc output:${_nvcc_output_log}\n")
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endif()
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set(_nvcc_link_line "")
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if(_nvcc_libraries)
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# Remove variable assignments.
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string(REGEX REPLACE "#\\\$ *[^= ]+=[^\n]*\n" "" _nvcc_output "${_nvcc_output_orig}")
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# Encode [] characters that break list expansion.
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string(REPLACE "[" "{==={" _nvcc_output "${_nvcc_output}")
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string(REPLACE "]" "}===}" _nvcc_output "${_nvcc_output}")
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# Split lines.
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string(REGEX REPLACE "\n+(#\\\$ )?" ";" _nvcc_output "${_nvcc_output}")
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foreach(line IN LISTS _nvcc_output)
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set(_nvcc_output_line "${line}")
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string(REPLACE "{==={" "[" _nvcc_output_line "${_nvcc_output_line}")
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string(REPLACE "}===}" "]" _nvcc_output_line "${_nvcc_output_line}")
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string(APPEND _nvcc_log " considering line: [${_nvcc_output_line}]\n")
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if("${_nvcc_output_line}" MATCHES "^ *nvlink")
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string(APPEND _nvcc_log " ignoring nvlink line\n")
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elseif(_nvcc_libraries)
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if("${_nvcc_output_line}" MATCHES "(@\"?tmp/a\\.exe\\.res\"?)")
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set(_nvcc_link_res_arg "${CMAKE_MATCH_1}")
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set(_nvcc_link_res "${CMAKE_PLATFORM_INFO_DIR}/CompilerIdCUDA/tmp/a.exe.res")
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if(EXISTS "${_nvcc_link_res}")
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file(READ "${_nvcc_link_res}" _nvcc_link_res_content)
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string(REPLACE "${_nvcc_link_res_arg}" "${_nvcc_link_res_content}" _nvcc_output_line "${_nvcc_output_line}")
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endif()
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endif()
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string(FIND "${_nvcc_output_line}" "${_nvcc_libraries}" _nvcc_libraries_pos)
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if(NOT _nvcc_libraries_pos EQUAL -1)
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set(_nvcc_link_line "${_nvcc_output_line}")
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string(APPEND _nvcc_log " extracted link line: [${_nvcc_link_line}]\n")
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endif()
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endif()
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endforeach()
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endif()
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if(_nvcc_link_line)
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if("x${CMAKE_CUDA_SIMULATE_ID}" STREQUAL "xMSVC")
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set(CMAKE_CUDA_HOST_LINK_LAUNCHER "${CMAKE_LINKER}")
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else()
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#extract the compiler that is being used for linking
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separate_arguments(_nvcc_link_line_args UNIX_COMMAND "${_nvcc_link_line}")
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list(GET _nvcc_link_line_args 0 _nvcc_host_link_launcher)
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if(IS_ABSOLUTE "${_nvcc_host_link_launcher}")
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string(APPEND _nvcc_log " extracted link launcher absolute path: [${_nvcc_host_link_launcher}]\n")
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set(CMAKE_CUDA_HOST_LINK_LAUNCHER "${_nvcc_host_link_launcher}")
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else()
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string(APPEND _nvcc_log " extracted link launcher name: [${_nvcc_host_link_launcher}]\n")
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find_program(_nvcc_find_host_link_launcher
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NAMES ${_nvcc_host_link_launcher}
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PATHS ${_nvcc_path} NO_DEFAULT_PATH)
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find_program(_nvcc_find_host_link_launcher
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NAMES ${_nvcc_host_link_launcher})
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if(_nvcc_find_host_link_launcher)
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string(APPEND _nvcc_log " found link launcher absolute path: [${_nvcc_find_host_link_launcher}]\n")
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set(CMAKE_CUDA_HOST_LINK_LAUNCHER "${_nvcc_find_host_link_launcher}")
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else()
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string(APPEND _nvcc_log " could not find link launcher absolute path\n")
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set(CMAKE_CUDA_HOST_LINK_LAUNCHER "${_nvcc_host_link_launcher}")
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endif()
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unset(_nvcc_find_host_link_launcher CACHE)
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endif()
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endif()
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#prefix the line with cuda-fake-ld so that implicit link info believes it is
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#a link line
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set(_nvcc_link_line "cuda-fake-ld ${_nvcc_link_line}")
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CMAKE_PARSE_IMPLICIT_LINK_INFO("${_nvcc_link_line}"
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CMAKE_CUDA_HOST_IMPLICIT_LINK_LIBRARIES
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CMAKE_CUDA_HOST_IMPLICIT_LINK_DIRECTORIES
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CMAKE_CUDA_HOST_IMPLICIT_LINK_FRAMEWORK_DIRECTORIES
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log
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"${CMAKE_CUDA_IMPLICIT_OBJECT_REGEX}")
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# Detect CMAKE_CUDA_RUNTIME_LIBRARY_DEFAULT from the compiler by looking at which
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# cudart library exists in the implicit link libraries passed to the host linker.
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# This is required when a project sets the cuda runtime library as part of the
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# initial flags.
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if(";${CMAKE_CUDA_HOST_IMPLICIT_LINK_LIBRARIES};" MATCHES [[;cudart_static(\.lib)?;]])
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set(CMAKE_CUDA_RUNTIME_LIBRARY_DEFAULT "STATIC")
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elseif(";${CMAKE_CUDA_HOST_IMPLICIT_LINK_LIBRARIES};" MATCHES [[;cudart(\.lib)?;]])
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set(CMAKE_CUDA_RUNTIME_LIBRARY_DEFAULT "SHARED")
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else()
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set(CMAKE_CUDA_RUNTIME_LIBRARY_DEFAULT "NONE")
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endif()
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set(_SET_CMAKE_CUDA_RUNTIME_LIBRARY_DEFAULT
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"set(CMAKE_CUDA_RUNTIME_LIBRARY_DEFAULT \"${CMAKE_CUDA_RUNTIME_LIBRARY_DEFAULT}\")")
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Parsed CUDA nvcc implicit link information from above output:\n${_nvcc_log}\n${log}\n\n")
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else()
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Failed to parsed CUDA nvcc implicit link information:\n${_nvcc_log}\n\n")
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message(FATAL_ERROR "Failed to extract nvcc implicit link line.")
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endif()
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endif()
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set(CMAKE_CUDA_TOOLKIT_INCLUDE_DIRECTORIES )
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string(REPLACE "\r" "" _nvcc_output_orig "${CMAKE_CUDA_COMPILER_PRODUCED_OUTPUT}")
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if(_nvcc_output_orig MATCHES "#\\\$ +INCLUDES= *([^\n]*)\n")
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set(_nvcc_includes "${CMAKE_MATCH_1}")
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string(APPEND _nvcc_log " found 'INCLUDES=' string: [${_nvcc_includes}]\n")
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else()
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set(_nvcc_includes "")
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string(REPLACE "\n" "\n " _nvcc_output_log "\n${_nvcc_output_orig}")
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string(APPEND _nvcc_log " no 'INCLUDES=' string found in nvcc output:${_nvcc_output_log}\n")
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endif()
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if(_nvcc_includes)
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# across all operating system each include directory is prefixed with -I
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separate_arguments(_nvcc_output NATIVE_COMMAND "${_nvcc_includes}")
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foreach(line IN LISTS _nvcc_output)
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string(REGEX REPLACE "^-I" "" line "${line}")
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get_filename_component(line "${line}" ABSOLUTE)
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list(APPEND CMAKE_CUDA_TOOLKIT_INCLUDE_DIRECTORIES "${line}")
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endforeach()
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Parsed CUDA nvcc include information from above output:\n${_nvcc_log}\n${log}\n\n")
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else()
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Failed to detect CUDA nvcc include information:\n${_nvcc_log}\n\n")
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endif()
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# configure all variables set in this file
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configure_file(${CMAKE_ROOT}/Modules/CMakeCUDACompiler.cmake.in
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${CMAKE_PLATFORM_INFO_DIR}/CMakeCUDACompiler.cmake
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@ONLY
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)
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set(CMAKE_CUDA_COMPILER_ENV_VAR "CUDACXX")
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set(CMAKE_CUDA_HOST_COMPILER_ENV_VAR "CUDAHOSTCXX")
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