mirror of
https://github.com/Kitware/CMake.git
synced 2026-01-04 12:49:36 -06:00
edf0ea9bb2
The `<CMAKE_CUDA_LINK_FLAGS>` placeholder in CUDA rule variables comes from the `<CMAKE_CXX_LINK_FLAGS>` placeholder from which the CUDA rule variables were originally derived. It is not a public interface for adding link flags so no projects should be using it. It is needed for platform information modules to specify platform-specific link flags for the language. None of our platform modules set it, so it is unused. Furthermore, it is broken as currently implemented. Some of the contexts in which it is used need `-Xlinker` and some do not. Therefore it is not possible to use the placeholder at all. Simply remove it for now. If some need for platform-specific CUDA link flags arises a new solution will be needed.
208 lines
8.1 KiB
CMake
208 lines
8.1 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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if(UNIX)
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set(CMAKE_CUDA_OUTPUT_EXTENSION .o)
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else()
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set(CMAKE_CUDA_OUTPUT_EXTENSION .obj)
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endif()
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set(CMAKE_INCLUDE_FLAG_CUDA "-I")
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# Load compiler-specific information.
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if(CMAKE_CUDA_COMPILER_ID)
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include(Compiler/${CMAKE_CUDA_COMPILER_ID}-CUDA OPTIONAL)
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endif()
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# load the system- and compiler specific files
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if(CMAKE_CUDA_COMPILER_ID)
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# load a hardware specific file, mostly useful for embedded compilers
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if(CMAKE_SYSTEM_PROCESSOR)
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include(Platform/${CMAKE_EFFECTIVE_SYSTEM_NAME}-${CMAKE_CUDA_COMPILER_ID}-CUDA-${CMAKE_SYSTEM_PROCESSOR} OPTIONAL)
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endif()
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include(Platform/${CMAKE_EFFECTIVE_SYSTEM_NAME}-${CMAKE_CUDA_COMPILER_ID}-CUDA OPTIONAL)
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endif()
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if(NOT CMAKE_SHARED_LIBRARY_RUNTIME_CUDA_FLAG)
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set(CMAKE_SHARED_LIBRARY_RUNTIME_CUDA_FLAG ${CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG})
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endif()
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if(NOT CMAKE_SHARED_LIBRARY_RUNTIME_CUDA_FLAG_SEP)
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set(CMAKE_SHARED_LIBRARY_RUNTIME_CUDA_FLAG_SEP ${CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG_SEP})
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endif()
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if(NOT CMAKE_SHARED_LIBRARY_RPATH_LINK_CUDA_FLAG)
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set(CMAKE_SHARED_LIBRARY_RPATH_LINK_CUDA_FLAG ${CMAKE_SHARED_LIBRARY_RPATH_LINK_C_FLAG})
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endif()
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if(NOT DEFINED CMAKE_EXE_EXPORTS_CUDA_FLAG)
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set(CMAKE_EXE_EXPORTS_CUDA_FLAG ${CMAKE_EXE_EXPORTS_C_FLAG})
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endif()
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if(NOT DEFINED CMAKE_SHARED_LIBRARY_SONAME_CUDA_FLAG)
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set(CMAKE_SHARED_LIBRARY_SONAME_CUDA_FLAG ${CMAKE_SHARED_LIBRARY_SONAME_C_FLAG})
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endif()
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if(NOT CMAKE_EXECUTABLE_RUNTIME_CUDA_FLAG)
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set(CMAKE_EXECUTABLE_RUNTIME_CUDA_FLAG ${CMAKE_SHARED_LIBRARY_RUNTIME_CUDA_FLAG})
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endif()
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if(NOT CMAKE_EXECUTABLE_RUNTIME_CUDA_FLAG_SEP)
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set(CMAKE_EXECUTABLE_RUNTIME_CUDA_FLAG_SEP ${CMAKE_SHARED_LIBRARY_RUNTIME_CUDA_FLAG_SEP})
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endif()
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if(NOT CMAKE_EXECUTABLE_RPATH_LINK_CUDA_FLAG)
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set(CMAKE_EXECUTABLE_RPATH_LINK_CUDA_FLAG ${CMAKE_SHARED_LIBRARY_RPATH_LINK_CUDA_FLAG})
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endif()
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if(NOT DEFINED CMAKE_SHARED_LIBRARY_LINK_CUDA_WITH_RUNTIME_PATH)
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set(CMAKE_SHARED_LIBRARY_LINK_CUDA_WITH_RUNTIME_PATH ${CMAKE_SHARED_LIBRARY_LINK_C_WITH_RUNTIME_PATH})
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endif()
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# for most systems a module is the same as a shared library
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# so unless the variable CMAKE_MODULE_EXISTS is set just
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# copy the values from the LIBRARY variables
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if(NOT CMAKE_MODULE_EXISTS)
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set(CMAKE_SHARED_MODULE_CUDA_FLAGS ${CMAKE_SHARED_LIBRARY_CUDA_FLAGS})
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set(CMAKE_SHARED_MODULE_CREATE_CUDA_FLAGS ${CMAKE_SHARED_LIBRARY_CREATE_CUDA_FLAGS})
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endif()
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# add the flags to the cache based
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# on the initial values computed in the platform/*.cmake files
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# use _INIT variables so that this only happens the first time
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# and you can set these flags in the cmake cache
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set(CMAKE_CUDA_FLAGS_INIT "$ENV{CUDAFLAGS} ${CMAKE_CUDA_FLAGS_INIT}")
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cmake_initialize_per_config_variable(CMAKE_CUDA_FLAGS "Flags used by the CUDA compiler")
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if(CMAKE_CUDA_STANDARD_LIBRARIES_INIT)
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set(CMAKE_CUDA_STANDARD_LIBRARIES "${CMAKE_CUDA_STANDARD_LIBRARIES_INIT}"
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CACHE STRING "Libraries linked by default with all CUDA applications.")
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mark_as_advanced(CMAKE_CUDA_STANDARD_LIBRARIES)
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endif()
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include(CMakeCommonLanguageInclude)
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# now define the following rules:
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# CMAKE_CUDA_CREATE_SHARED_LIBRARY
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# CMAKE_CUDA_CREATE_SHARED_MODULE
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# CMAKE_CUDA_COMPILE_WHOLE_COMPILATION
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# CMAKE_CUDA_COMPILE_PTX_COMPILATION
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# CMAKE_CUDA_COMPILE_SEPARABLE_COMPILATION
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# CMAKE_CUDA_LINK_EXECUTABLE
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if(CMAKE_CUDA_HOST_COMPILER)
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set(CMAKE_CUDA_HOST_FLAGS "-ccbin=<CMAKE_CUDA_HOST_COMPILER>")
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else()
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set(CMAKE_CUDA_HOST_FLAGS "")
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endif()
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set(__IMPLICT_LINKS )
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foreach(dir ${CMAKE_CUDA_HOST_IMPLICIT_LINK_DIRECTORIES})
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string(APPEND __IMPLICT_LINKS " -L\"${dir}\"")
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endforeach()
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foreach(lib ${CMAKE_CUDA_HOST_IMPLICIT_LINK_LIBRARIES})
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if(${lib} MATCHES "/")
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string(APPEND __IMPLICT_LINKS " \"${lib}\"")
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else()
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string(APPEND __IMPLICT_LINKS " -l${lib}")
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endif()
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endforeach()
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# create a shared library
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if(NOT CMAKE_CUDA_CREATE_SHARED_LIBRARY)
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set(CMAKE_CUDA_CREATE_SHARED_LIBRARY
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"<CMAKE_CUDA_HOST_LINK_LAUNCHER> <CMAKE_SHARED_LIBRARY_CUDA_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_CUDA_FLAGS> <SONAME_FLAG><TARGET_SONAME> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>${__IMPLICT_LINKS}")
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endif()
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# create a shared module copy the shared library rule by default
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if(NOT CMAKE_CUDA_CREATE_SHARED_MODULE)
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set(CMAKE_CUDA_CREATE_SHARED_MODULE ${CMAKE_CUDA_CREATE_SHARED_LIBRARY})
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endif()
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# Create a static archive incrementally for large object file counts.
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if(NOT DEFINED CMAKE_CUDA_ARCHIVE_CREATE)
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set(CMAKE_CUDA_ARCHIVE_CREATE "<CMAKE_AR> qc <TARGET> <LINK_FLAGS> <OBJECTS>")
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endif()
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if(NOT DEFINED CMAKE_CUDA_ARCHIVE_APPEND)
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set(CMAKE_CUDA_ARCHIVE_APPEND "<CMAKE_AR> q <TARGET> <LINK_FLAGS> <OBJECTS>")
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endif()
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if(NOT DEFINED CMAKE_CUDA_ARCHIVE_FINISH)
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set(CMAKE_CUDA_ARCHIVE_FINISH "<CMAKE_RANLIB> <TARGET>")
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endif()
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#Specify how to compile when ptx has been requested
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if(NOT CMAKE_CUDA_COMPILE_PTX_COMPILATION)
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set(CMAKE_CUDA_COMPILE_PTX_COMPILATION
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"<CMAKE_CUDA_COMPILER> ${CMAKE_CUDA_HOST_FLAGS} <DEFINES> <INCLUDES> <FLAGS> -x cu -ptx <SOURCE> -o <OBJECT>")
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endif()
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#Specify how to compile when separable compilation has been requested
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if(NOT CMAKE_CUDA_COMPILE_SEPARABLE_COMPILATION)
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set(CMAKE_CUDA_COMPILE_SEPARABLE_COMPILATION
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"<CMAKE_CUDA_COMPILER> ${CMAKE_CUDA_HOST_FLAGS} <DEFINES> <INCLUDES> <FLAGS> -x cu -dc <SOURCE> -o <OBJECT>")
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endif()
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#Specify how to compile when whole compilation has been requested
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if(NOT CMAKE_CUDA_COMPILE_WHOLE_COMPILATION)
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set(CMAKE_CUDA_COMPILE_WHOLE_COMPILATION
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"<CMAKE_CUDA_COMPILER> ${CMAKE_CUDA_HOST_FLAGS} <DEFINES> <INCLUDES> <FLAGS> -x cu -c <SOURCE> -o <OBJECT>")
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endif()
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if(CMAKE_GENERATOR STREQUAL "Ninja")
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set(CMAKE_CUDA_COMPILE_DEPENDENCY_DETECTION
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"<CMAKE_CUDA_COMPILER> ${CMAKE_CUDA_HOST_FLAGS} <DEFINES> <INCLUDES> <FLAGS> -x cu -M <SOURCE> -MT <OBJECT> -o $DEP_FILE")
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#The Ninja generator uses the make file dependency files to determine what
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#files need to be recompiled. Unfortunately, nvcc doesn't support building
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#a source file and generating the dependencies of said file in a single
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#invocation. Instead we have to state that you need to chain two commands.
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#
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#The makefile generators uses the custom CMake dependency scanner, and thus
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#it is exempt from this logic.
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list(APPEND CMAKE_CUDA_COMPILE_PTX_COMPILATION "${CMAKE_CUDA_COMPILE_DEPENDENCY_DETECTION}")
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list(APPEND CMAKE_CUDA_COMPILE_SEPARABLE_COMPILATION "${CMAKE_CUDA_COMPILE_DEPENDENCY_DETECTION}")
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list(APPEND CMAKE_CUDA_COMPILE_WHOLE_COMPILATION "${CMAKE_CUDA_COMPILE_DEPENDENCY_DETECTION}")
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endif()
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# compile a cu file into an executable
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if(NOT CMAKE_CUDA_LINK_EXECUTABLE)
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set(CMAKE_CUDA_LINK_EXECUTABLE
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"<CMAKE_CUDA_HOST_LINK_LAUNCHER> <LINK_FLAGS> <OBJECTS> -o <TARGET> <LINK_LIBRARIES>${__IMPLICT_LINKS}")
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endif()
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if(CMAKE_CUDA_COMPILER_VERSION VERSION_GREATER_EQUAL "8.0.0")
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set(_CMAKE_CUDA_EXTRA_DEVICE_LINK_FLAGS "-Wno-deprecated-gpu-targets")
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else()
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set(_CMAKE_CUDA_EXTRA_DEVICE_LINK_FLAGS "")
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endif()
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# Add implicit host link directories that contain device libraries
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# to the device link line.
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set(__IMPLICT_DLINK_DIRS ${CMAKE_CUDA_IMPLICIT_LINK_DIRECTORIES})
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if(__IMPLICT_DLINK_DIRS)
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list(REMOVE_ITEM __IMPLICT_DLINK_DIRS ${CMAKE_CUDA_HOST_IMPLICIT_LINK_DIRECTORIES})
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endif()
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set(__IMPLICT_DLINK_FLAGS )
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foreach(dir ${__IMPLICT_DLINK_DIRS})
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if(EXISTS "${dir}/libcublas_device.a")
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string(APPEND __IMPLICT_DLINK_FLAGS " -L\"${dir}\"")
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endif()
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endforeach()
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unset(__IMPLICT_DLINK_DIRS)
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#These are used when linking relocatable (dc) cuda code
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if(NOT CMAKE_CUDA_DEVICE_LINK_LIBRARY)
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set(CMAKE_CUDA_DEVICE_LINK_LIBRARY
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"<CMAKE_CUDA_COMPILER> ${CMAKE_CUDA_HOST_FLAGS} <LANGUAGE_COMPILE_FLAGS> ${CMAKE_CUDA_COMPILE_OPTIONS_PIC} ${_CMAKE_CUDA_EXTRA_DEVICE_LINK_FLAGS} -shared -dlink <OBJECTS> -o <TARGET> <LINK_LIBRARIES>${__IMPLICT_DLINK_FLAGS}")
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endif()
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if(NOT CMAKE_CUDA_DEVICE_LINK_EXECUTABLE)
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set(CMAKE_CUDA_DEVICE_LINK_EXECUTABLE
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"<CMAKE_CUDA_COMPILER> ${CMAKE_CUDA_HOST_FLAGS} <FLAGS> ${CMAKE_CUDA_COMPILE_OPTIONS_PIC} ${_CMAKE_CUDA_EXTRA_DEVICE_LINK_FLAGS} -shared -dlink <OBJECTS> -o <TARGET> <LINK_LIBRARIES>${__IMPLICT_DLINK_FLAGS}")
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endif()
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unset(_CMAKE_CUDA_EXTRA_DEVICE_LINK_FLAGS)
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unset(__IMPLICT_DLINK_FLAGS)
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set(CMAKE_CUDA_INFORMATION_LOADED 1)
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