mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-08 13:23:51 +00:00
479 lines
19 KiB
CMake
479 lines
19 KiB
CMake
##============================================================================
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## Copyright (c) Kitware, Inc.
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## All rights reserved.
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## See LICENSE.txt for details.
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##
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## This software is distributed WITHOUT ANY WARRANTY; without even
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## the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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## PURPOSE. See the above copyright notice for more information.
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##============================================================================
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include(CMakeParseArguments)
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include(VTKmCMakeBackports)
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include(VTKmDeviceAdapters)
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include(VTKmCPUVectorization)
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if(VTKm_ENABLE_MPI AND NOT TARGET MPI::MPI_CXX)
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find_package(MPI REQUIRED MODULE)
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endif()
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#-----------------------------------------------------------------------------
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# INTERNAL FUNCTIONS
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# No promises when used from outside VTK-m
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#-----------------------------------------------------------------------------
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# Utility to build a kit name from the current directory.
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function(vtkm_get_kit_name kitvar)
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# Will this always work? It should if ${CMAKE_CURRENT_SOURCE_DIR} is
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# built from ${VTKm_SOURCE_DIR}.
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string(REPLACE "${VTKm_SOURCE_DIR}/" "" dir_prefix ${CMAKE_CURRENT_SOURCE_DIR})
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string(REPLACE "/" "_" kit "${dir_prefix}")
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set(${kitvar} "${kit}" PARENT_SCOPE)
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# Optional second argument to get dir_prefix.
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if (${ARGC} GREATER 1)
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set(${ARGV1} "${dir_prefix}" PARENT_SCOPE)
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endif ()
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endfunction(vtkm_get_kit_name)
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#-----------------------------------------------------------------------------
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function(vtkm_pyexpander_generated_file generated_file_name)
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# If pyexpander is available, add targets to build and check
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if(PYEXPANDER_FOUND AND TARGET Python::Interpreter)
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add_custom_command(
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OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${generated_file_name}.checked
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COMMAND ${CMAKE_COMMAND}
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-DPYTHON_EXECUTABLE=${Python_EXECUTABLE}
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-DPYEXPANDER_COMMAND=${PYEXPANDER_COMMAND}
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-DSOURCE_FILE=${CMAKE_CURRENT_SOURCE_DIR}/${generated_file_name}
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-DGENERATED_FILE=${CMAKE_CURRENT_BINARY_DIR}/${generated_file_name}
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-P ${VTKm_CMAKE_MODULE_PATH}/testing/VTKmCheckPyexpander.cmake
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MAIN_DEPENDENCY ${CMAKE_CURRENT_SOURCE_DIR}/${generated_file_name}.in
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DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${generated_file_name}
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COMMENT "Checking validity of ${generated_file_name}"
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)
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add_custom_target(check_${generated_file_name} ALL
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DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${generated_file_name}.checked
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)
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endif()
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endfunction(vtkm_pyexpander_generated_file)
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#-----------------------------------------------------------------------------
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function(vtkm_generate_export_header lib_name)
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# Get the location of this library in the directory structure
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# export headers work on the directory structure more than the lib_name
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vtkm_get_kit_name(kit_name dir_prefix)
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# Now generate a header that holds the macros needed to easily export
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# template classes. This
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string(TOUPPER ${lib_name} BASE_NAME_UPPER)
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set(EXPORT_MACRO_NAME "${BASE_NAME_UPPER}")
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set(EXPORT_IS_BUILT_STATIC 0)
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get_target_property(is_static ${lib_name} TYPE)
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if(${is_static} STREQUAL "STATIC_LIBRARY")
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#If we are building statically set the define symbol
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set(EXPORT_IS_BUILT_STATIC 1)
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endif()
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unset(is_static)
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get_target_property(EXPORT_IMPORT_CONDITION ${lib_name} DEFINE_SYMBOL)
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if(NOT EXPORT_IMPORT_CONDITION)
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#set EXPORT_IMPORT_CONDITION to what the DEFINE_SYMBOL would be when
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#building shared
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set(EXPORT_IMPORT_CONDITION ${lib_name}_EXPORTS)
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endif()
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configure_file(
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${VTKm_SOURCE_DIR}/CMake/VTKmExportHeaderTemplate.h.in
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${VTKm_BINARY_DIR}/include/${dir_prefix}/${lib_name}_export.h
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@ONLY)
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if(NOT VTKm_INSTALL_ONLY_LIBRARIES)
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install(FILES ${VTKm_BINARY_DIR}/include/${dir_prefix}/${lib_name}_export.h
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DESTINATION ${VTKm_INSTALL_INCLUDE_DIR}/${dir_prefix}
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)
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endif()
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endfunction(vtkm_generate_export_header)
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#-----------------------------------------------------------------------------
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function(vtkm_install_headers dir_prefix)
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if(NOT VTKm_INSTALL_ONLY_LIBRARIES)
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set(hfiles ${ARGN})
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install(FILES ${hfiles}
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DESTINATION ${VTKm_INSTALL_INCLUDE_DIR}/${dir_prefix}
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)
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endif()
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endfunction(vtkm_install_headers)
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#-----------------------------------------------------------------------------
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function(vtkm_declare_headers)
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vtkm_get_kit_name(name dir_prefix)
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vtkm_install_headers("${dir_prefix}" ${ARGN})
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endfunction(vtkm_declare_headers)
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#-----------------------------------------------------------------------------
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function(vtkm_setup_job_pool)
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# The VTK-m job pool is only used for components that use large amounts
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# of memory such as worklet tests, filters, and filter tests
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get_property(vtkm_pool_established
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GLOBAL PROPERTY VTKM_JOB_POOL_ESTABLISHED SET)
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if(NOT vtkm_pool_established)
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# The VTK-m filters uses large amounts of memory to compile as it does lots
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# of template expansion. To reduce the amount of tension on the machine when
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# using generators such as ninja we restrict the number of VTK-m enabled
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# compilation units to be built at the same time.
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#
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# We try to allocate a pool size where we presume each compilation process
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# will require 3GB of memory. To allow for other NON VTK-m jobs we leave at
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# least 3GB of memory as 'slop'.
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cmake_host_system_information(RESULT vtkm_mem_ QUERY TOTAL_PHYSICAL_MEMORY)
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math(EXPR vtkm_pool_size "(${vtkm_mem_}/3072)-1")
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if (vtkm_pool_size LESS 1)
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set(vtkm_pool_size 1)
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endif ()
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set_property(GLOBAL APPEND
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PROPERTY
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JOB_POOLS vtkm_pool=${vtkm_pool_size})
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set_property(GLOBAL PROPERTY VTKM_JOB_POOL_ESTABLISHED TRUE)
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endif()
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endfunction()
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#-----------------------------------------------------------------------------
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# FORWARD FACING API
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#-----------------------------------------------------------------------------
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# Pass to consumers extra compile flags they need to add to CMAKE_CUDA_FLAGS
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# to have CUDA compatibility.
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#
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# If VTK-m was built with CMake 3.18+ and you are using CMake 3.18+ and have
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# a cmake_minimum_required of 3.18 or have set policy CMP0105 to new, this will
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# return an empty string as the `vtkm::cuda` target will correctly propagate
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# all the necessary flags.
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#
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# This is required for CMake < 3.18 as they don't support the `$<DEVICE_LINK>`
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# generator expression for `target_link_options`. Instead they need to be
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# specified in CMAKE_CUDA_FLAGS
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#
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#
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# add_library(lib_that_uses_vtkm ...)
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# vtkm_add_cuda_flags(CMAKE_CUDA_FLAGS)
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# target_link_libraries(lib_that_uses_vtkm PRIVATE vtkm_filter)
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#
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function(vtkm_get_cuda_flags settings_var)
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if(TARGET vtkm::cuda)
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if(POLICY CMP0105)
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cmake_policy(GET CMP0105 does_device_link)
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get_property(arch_flags
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TARGET vtkm::cuda
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PROPERTY INTERFACE_LINK_OPTIONS)
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if(arch_flags AND CMP0105 STREQUAL "NEW")
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return()
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endif()
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endif()
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get_property(arch_flags
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TARGET vtkm::cuda
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PROPERTY cuda_architecture_flags)
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set(${settings_var} "${${settings_var}} ${arch_flags}" PARENT_SCOPE)
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endif()
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endfunction()
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#-----------------------------------------------------------------------------
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# Add to a target linker flags that allow unused VTK-m functions to be dropped,
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# which helps keep binary sizes down. This works as VTK-m is compiled with
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# ffunction-sections which allows for the linker to remove unused functions.
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# If you are building a program that loads runtime plugins that can call
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# VTK-m this most likely shouldn't be used as symbols the plugin expects
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# to exist will be removed.
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#
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# add_library(lib_that_uses_vtkm ...)
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# vtkm_add_drop_unused_function_flags(lib_that_uses_vtkm)
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# target_link_libraries(lib_that_uses_vtkm PRIVATE vtkm_filter)
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#
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function(vtkm_add_drop_unused_function_flags uses_vtkm_target)
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get_target_property(lib_type ${uses_vtkm_target} TYPE)
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if(${lib_type} STREQUAL "SHARED_LIBRARY" OR
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${lib_type} STREQUAL "MODULE_LIBRARY" OR
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${lib_type} STREQUAL "EXECUTABLE" )
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if(APPLE)
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#OSX Linker uses a different flag for this
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set_property(TARGET ${uses_vtkm_target} APPEND_STRING PROPERTY
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LINK_FLAGS " -Wl,-dead_strip")
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elseif(VTKM_COMPILER_IS_GNU OR VTKM_COMPILER_IS_CLANG)
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set_property(TARGET ${uses_vtkm_target} APPEND_STRING PROPERTY
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LINK_FLAGS " -Wl,--gc-sections")
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endif()
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endif()
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endfunction()
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#-----------------------------------------------------------------------------
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# Add a relevant information to target that wants to use VTK-m.
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#
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# This higher order function allow build-systems that use VTK-m
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# to use `add_library` or `add_executable` calls but still have an
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# easy to way to get the required information to have VTK-m using
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# compilation units compile correctly.
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#
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# vtkm_add_target_information(
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# target[s]
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# [ DROP_UNUSED_SYMBOLS ]
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# [ MODIFY_CUDA_FLAGS ]
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# [ EXTENDS_VTKM ]
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# [ DEVICE_SOURCES <source_list> ]
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# )
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#
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# Usage:
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# add_library(lib_that_uses_vtkm STATIC a.cxx)
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# vtkm_add_target_information(lib_that_uses_vtkm
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# DROP_UNUSED_SYMBOLS
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# MODIFY_CUDA_FLAGS
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# DEVICE_SOURCES a.cxx
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# )
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# target_link_libraries(lib_that_uses_vtkm PRIVATE vtkm_filter)
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#
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# DROP_UNUSED_SYMBOLS: If enabled will apply the appropiate link
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# flags to drop unused VTK-m symbols. This works as VTK-m is compiled with
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# -ffunction-sections which allows for the linker to remove unused functions.
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# If you are building a program that loads runtime plugins that can call
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# VTK-m this most likely shouldn't be used as symbols the plugin expects
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# to exist will be removed.
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# Enabling this will help keep library sizes down when using static builds
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# of VTK-m as only the functions you call will be kept. This can have a
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# dramatic impact on the size of the resulting executable / shared library.
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#
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#
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# MODIFY_CUDA_FLAGS: If enabled will add the required -arch=<ver> flags
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# that VTK-m was compiled with.
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#
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# If VTK-m was built with CMake 3.18+ and you are using CMake 3.18+ and have
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# a cmake_minimum_required of 3.18 or have set policy CMP0105 to new, this will
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# return an empty string as the `vtkm::cuda` target will correctly propagate
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# all the necessary flags.
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#
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# Note: calling `vtkm_add_target_information` multiple times with
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# `MODIFY_CUDA_FLAGS` will cause duplicate compiler flags. To resolve this issue
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# you can; pass all targets and sources to a single `vtkm_add_target_information`
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# call, have the first one use `MODIFY_CUDA_FLAGS`, or use the provided
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# standalone `vtkm_get_cuda_flags` function.
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#
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# DEVICE_SOURCES: The collection of source files that are used by `target(s)` that
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# need to be marked as going to a special compiler for certain device adapters
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# such as CUDA.
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#
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# EXTENDS_VTKM: Some programming models have restrictions on how types can be used,
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# passed across library boundaries, and derived from.
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# For example CUDA doesn't allow device side calls across dynamic library boundaries,
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# and requires all polymorphic classes to be reachable at dynamic library/executable
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# link time.
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#
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# To accommodate these restrictions we need to handle the following allowable
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# use-cases:
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# Object library: do nothing, zero restrictions
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# Executable: do nothing, zero restrictions
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# Static library: do nothing, zero restrictions
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# Dynamic library:
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# -> Wanting to use VTK-m as implementation detail, doesn't expose VTK-m
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# types to consumers. This is supported no matter if CUDA is enabled.
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# -> Wanting to extend VTK-m and provide these types to consumers.
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# This is only supported when CUDA isn't enabled. Otherwise we need to ERROR!
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# -> Wanting to pass known VTK-m types across library boundaries for others
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# to use in filters/worklets.
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# This is only supported when CUDA isn't enabled. Otherwise we need to ERROR!
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#
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# For most consumers they can ignore the `EXTENDS_VTKM` property as the default
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# will be correct.
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#
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#
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function(vtkm_add_target_information uses_vtkm_target)
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set(options DROP_UNUSED_SYMBOLS MODIFY_CUDA_FLAGS EXTENDS_VTKM)
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set(multiValueArgs DEVICE_SOURCES)
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cmake_parse_arguments(VTKm_TI
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"${options}" "${oneValueArgs}" "${multiValueArgs}"
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${ARGN}
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)
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if(VTKm_TI_MODIFY_CUDA_FLAGS)
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vtkm_get_cuda_flags(cuda_flags)
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if(cuda_flags)
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set(CMAKE_CUDA_FLAGS ${cuda_flags} PARENT_SCOPE)
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endif()
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endif()
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set(targets ${uses_vtkm_target})
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foreach(item IN LISTS VTKm_TI_UNPARSED_ARGUMENTS)
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if(TARGET ${item})
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list(APPEND targets ${item})
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endif()
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endforeach()
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# set the required target properties
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set_target_properties(${targets} PROPERTIES POSITION_INDEPENDENT_CODE ON)
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set_target_properties(${targets} PROPERTIES CUDA_SEPARABLE_COMPILATION ON)
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# CUDA_ARCHITECTURES added in CMake 3.18
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set_target_properties(${targets} PROPERTIES CUDA_ARCHITECTURES OFF)
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if(VTKm_TI_DROP_UNUSED_SYMBOLS)
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foreach(target IN LISTS targets)
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vtkm_add_drop_unused_function_flags(${target})
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endforeach()
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endif()
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if((TARGET vtkm::cuda) OR (TARGET vtkm::kokkos_cuda))
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set_source_files_properties(${VTKm_TI_DEVICE_SOURCES} PROPERTIES LANGUAGE "CUDA")
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elseif(TARGET vtkm::kokkos_hip)
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set_source_files_properties(${VTKm_TI_DEVICE_SOURCES} PROPERTIES LANGUAGE "HIP")
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endif()
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# Validate that following:
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# - We are building with CUDA enabled.
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# - We are building a VTK-m library or a library that wants cross library
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# device calls.
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#
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# This is required as CUDA currently doesn't support device side calls across
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# dynamic library boundaries.
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if((TARGET vtkm::cuda) OR (TARGET vtkm::kokkos_cuda))
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foreach(target IN LISTS targets)
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get_target_property(lib_type ${target} TYPE)
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if (TARGET vtkm::cuda)
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get_target_property(requires_static vtkm::cuda requires_static_builds)
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endif()
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if (TARGET vtkm::kokkos)
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get_target_property(requires_static vtkm::kokkos requires_static_builds)
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endif()
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if(requires_static AND ${lib_type} STREQUAL "SHARED_LIBRARY" AND VTKm_TI_EXTENDS_VTKM)
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#We provide different error messages based on if we are building VTK-m
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#or being called by a consumer of VTK-m. We use PROJECT_NAME so that we
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#produce the correct error message when VTK-m is a subdirectory include
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#of another project
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if(PROJECT_NAME STREQUAL "VTKm")
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message(SEND_ERROR "${target} needs to be built STATIC as CUDA doesn't"
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" support virtual methods across dynamic library boundaries. You"
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" need to set the CMake option BUILD_SHARED_LIBS to `OFF`.")
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else()
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message(SEND_ERROR "${target} needs to be built STATIC as CUDA doesn't"
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" support virtual methods across dynamic library boundaries. You"
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" should either explicitly call add_library with the `STATIC` keyword"
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" or set the CMake option BUILD_SHARED_LIBS to `OFF`.")
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endif()
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endif()
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endforeach()
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endif()
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endfunction()
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#-----------------------------------------------------------------------------
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# Add a VTK-m library. The name of the library will match the "kit" name
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# (e.g. vtkm_rendering) unless the NAME argument is given.
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#
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# vtkm_library(
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# [ NAME <name> ]
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# [ OBJECT | STATIC | SHARED ]
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# SOURCES <source_list>
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# TEMPLATE_SOURCES <.hxx >
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# HEADERS <header list>
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# USE_VTKM_JOB_POOL
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# [ DEVICE_SOURCES <source_list> ]
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# )
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function(vtkm_library)
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set(options OBJECT STATIC SHARED USE_VTKM_JOB_POOL)
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set(oneValueArgs NAME)
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set(multiValueArgs SOURCES HEADERS TEMPLATE_SOURCES DEVICE_SOURCES)
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cmake_parse_arguments(VTKm_LIB
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"${options}" "${oneValueArgs}" "${multiValueArgs}"
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${ARGN}
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)
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if(NOT VTKm_LIB_NAME)
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message(FATAL_ERROR "vtkm library must have an explicit name")
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endif()
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set(lib_name ${VTKm_LIB_NAME})
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if(VTKm_LIB_OBJECT)
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set(VTKm_LIB_type OBJECT)
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elseif(VTKm_LIB_STATIC)
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set(VTKm_LIB_type STATIC)
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elseif(VTKm_LIB_SHARED)
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set(VTKm_LIB_type SHARED)
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endif()
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add_library(${lib_name}
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${VTKm_LIB_type}
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${VTKm_LIB_SOURCES}
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${VTKm_LIB_HEADERS}
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${VTKm_LIB_TEMPLATE_SOURCES}
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${VTKm_LIB_DEVICE_SOURCES}
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)
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vtkm_add_target_information(${lib_name}
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EXTENDS_VTKM
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DEVICE_SOURCES ${VTKm_LIB_DEVICE_SOURCES}
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)
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if(VTKm_HIDE_PRIVATE_SYMBOLS)
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set_property(TARGET ${lib_name} PROPERTY CUDA_VISIBILITY_PRESET "hidden")
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set_property(TARGET ${lib_name} PROPERTY CXX_VISIBILITY_PRESET "hidden")
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endif()
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#specify where to place the built library
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set_property(TARGET ${lib_name} PROPERTY ARCHIVE_OUTPUT_DIRECTORY ${VTKm_LIBRARY_OUTPUT_PATH})
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set_property(TARGET ${lib_name} PROPERTY LIBRARY_OUTPUT_DIRECTORY ${VTKm_LIBRARY_OUTPUT_PATH})
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set_property(TARGET ${lib_name} PROPERTY RUNTIME_OUTPUT_DIRECTORY ${VTKm_EXECUTABLE_OUTPUT_PATH})
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# allow the static cuda runtime find the driver (libcuda.dyllib) at runtime.
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if(APPLE)
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set_property(TARGET ${lib_name} PROPERTY BUILD_RPATH ${CMAKE_CUDA_IMPLICIT_LINK_DIRECTORIES})
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endif()
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# Setup the SOVERSION and VERSION information for this vtkm library
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set_property(TARGET ${lib_name} PROPERTY VERSION 1)
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set_property(TARGET ${lib_name} PROPERTY SOVERSION 1)
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# Support custom library suffix names, for other projects wanting to inject
|
|
# their own version numbers etc.
|
|
if(DEFINED VTKm_CUSTOM_LIBRARY_SUFFIX)
|
|
set(_lib_suffix "${VTKm_CUSTOM_LIBRARY_SUFFIX}")
|
|
else()
|
|
set(_lib_suffix "-${VTKm_VERSION_MAJOR}.${VTKm_VERSION_MINOR}")
|
|
endif()
|
|
set_property(TARGET ${lib_name} PROPERTY OUTPUT_NAME ${lib_name}${_lib_suffix})
|
|
|
|
#generate the export header and install it
|
|
vtkm_generate_export_header(${lib_name})
|
|
|
|
#install the headers
|
|
vtkm_declare_headers(${VTKm_LIB_HEADERS}
|
|
${VTKm_LIB_TEMPLATE_SOURCES})
|
|
|
|
# When building libraries/tests that are part of the VTK-m repository inherit
|
|
# the properties from vtkm_developer_flags. The flags are intended only for
|
|
# VTK-m itself and are not needed by consumers. We will export
|
|
# vtkm_developer_flags so consumer can use VTK-m's build flags if they so
|
|
# desire
|
|
if (VTKm_ENABLE_DEVELOPER_FLAGS)
|
|
target_link_libraries(${lib_name} PUBLIC $<BUILD_INTERFACE:vtkm_developer_flags>)
|
|
else()
|
|
target_link_libraries(${lib_name} PRIVATE $<BUILD_INTERFACE:vtkm_developer_flags>)
|
|
endif()
|
|
|
|
#install the library itself
|
|
install(TARGETS ${lib_name}
|
|
EXPORT ${VTKm_EXPORT_NAME}
|
|
ARCHIVE DESTINATION ${VTKm_INSTALL_LIB_DIR}
|
|
LIBRARY DESTINATION ${VTKm_INSTALL_LIB_DIR}
|
|
RUNTIME DESTINATION ${VTKm_INSTALL_BIN_DIR}
|
|
)
|
|
|
|
if(VTKm_LIB_USE_VTKM_JOB_POOL)
|
|
vtkm_setup_job_pool()
|
|
set_property(TARGET ${lib_name} PROPERTY JOB_POOL_COMPILE vtkm_pool)
|
|
endif()
|
|
|
|
endfunction(vtkm_library)
|