derek.holloway
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60 lines
2.7 KiB
CMake
60 lines
2.7 KiB
CMake
#
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# find_package(libcudacxx) config file.
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#
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# Defines a libcudacxx::libcudacxx target that may be linked from user projects to include
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# libcudacxx.
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if (TARGET libcudacxx::libcudacxx)
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return()
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endif()
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function(_libcudacxx_declare_interface_alias alias_name ugly_name)
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# 1) Only IMPORTED and ALIAS targets can be placed in a namespace.
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# 2) When an IMPORTED library is linked to another target, its include
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# directories are treated as SYSTEM includes.
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# 3) nvcc will automatically check the CUDA Toolkit include path *before* the
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# system includes. This means that the Toolkit libcudacxx will *always* be used
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# during compilation, and the include paths of an IMPORTED libcudacxx::libcudacxx
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# target will never have any effect.
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# 4) This behavior can be fixed by setting the property NO_SYSTEM_FROM_IMPORTED
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# on EVERY target that links to libcudacxx::libcudacxx. This would be a burden and a
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# footgun for our users. Forgetting this would silently pull in the wrong libcudacxx!
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# 5) A workaround is to make a non-IMPORTED library outside of the namespace,
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# configure it, and then ALIAS it into the namespace (or ALIAS and then
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# configure, that seems to work too).
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add_library(${ugly_name} INTERFACE)
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add_library(${alias_name} INTERFACE IMPORTED GLOBAL)
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target_link_libraries(${alias_name} INTERFACE ${ugly_name})
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endfunction()
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#
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# Setup targets
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#
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_libcudacxx_declare_interface_alias(libcudacxx::libcudacxx _libcudacxx_libcudacxx)
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# Pull in the include dir detected by libcudacxx-config-version.cmake
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set(_libcudacxx_INCLUDE_DIR "${_libcudacxx_VERSION_INCLUDE_DIR}"
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CACHE INTERNAL "Location of libcudacxx headers."
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)
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unset(_libcudacxx_VERSION_INCLUDE_DIR CACHE) # Clear tmp variable from cache
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target_include_directories(_libcudacxx_libcudacxx INTERFACE "${_libcudacxx_INCLUDE_DIR}")
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target_compile_definitions(_libcudacxx_libcudacxx INTERFACE $<$<CONFIG:Debug>:CCCL_ENABLE_ASSERTIONS>)
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#
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# Standardize version info
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#
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set(LIBCUDACXX_VERSION ${${CMAKE_FIND_PACKAGE_NAME}_VERSION} CACHE INTERNAL "")
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set(LIBCUDACXX_VERSION_MAJOR ${${CMAKE_FIND_PACKAGE_NAME}_VERSION_MAJOR} CACHE INTERNAL "")
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set(LIBCUDACXX_VERSION_MINOR ${${CMAKE_FIND_PACKAGE_NAME}_VERSION_MINOR} CACHE INTERNAL "")
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set(LIBCUDACXX_VERSION_PATCH ${${CMAKE_FIND_PACKAGE_NAME}_VERSION_PATCH} CACHE INTERNAL "")
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set(LIBCUDACXX_VERSION_TWEAK ${${CMAKE_FIND_PACKAGE_NAME}_VERSION_TWEAK} CACHE INTERNAL "")
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set(LIBCUDACXX_VERSION_COUNT ${${CMAKE_FIND_PACKAGE_NAME}_VERSION_COUNT} CACHE INTERNAL "")
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include(FindPackageHandleStandardArgs)
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if (NOT libcudacxx_CONFIG)
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set(libcudacxx_CONFIG "${CMAKE_CURRENT_LIST_FILE}")
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endif()
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find_package_handle_standard_args(libcudacxx CONFIG_MODE)
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