##============================================================================ ## Copyright (c) Kitware, Inc. ## All rights reserved. ## See LICENSE.txt for details. ## This software is distributed WITHOUT ANY WARRANTY; without even ## the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ## PURPOSE. See the above copyright notice for more information. ## ## Copyright 2014 National Technology & Engineering Solutions of Sandia, LLC (NTESS). ## Copyright 2014 UT-Battelle, LLC. ## Copyright 2014 Los Alamos National Security. ## ## Under the terms of Contract DE-NA0003525 with NTESS, ## the U.S. Government retains certain rights in this software. ## ## Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National ## Laboratory (LANL), the U.S. Government retains certain rights in ## this software. ##============================================================================ # function(vtkm_extract_real_library library real_library) if(NOT UNIX) set(${real_library} "${library}" PARENT_SCOPE) return() endif() #Read in the first 4 bytes and see if they are the ELF magic number set(_elf_magic "7f454c46") file(READ ${library} _hex_data OFFSET 0 LIMIT 4 HEX) if(_hex_data STREQUAL _elf_magic) #we have opened a elf binary so this is what #we should link too set(${real_library} "${library}" PARENT_SCOPE) return() endif() file(READ ${library} _data OFFSET 0 LIMIT 1024) if("${_data}" MATCHES "INPUT \\(([^(]+)\\)") #extract out the so name from REGEX MATCh command set(_proper_so_name "${CMAKE_MATCH_1}") #construct path to the real .so which is presumed to be in the same directory #as the input file get_filename_component(_so_dir "${library}" DIRECTORY) set(${real_library} "${_so_dir}/${_proper_so_name}" PARENT_SCOPE) else() #unable to determine what this library is so just hope everything works #add pass it unmodified. set(${real_library} "${library}" PARENT_SCOPE) endif() endfunction() if(VTKm_ENABLE_TBB AND NOT TARGET vtkm::tbb) find_package(TBB REQUIRED) # Workaround a bug in older versions of cmake prevents linking with UNKNOWN IMPORTED libraries # refer to CMake issue #17245 if (CMAKE_VERSION VERSION_LESS 3.10) add_library(vtkm::tbb SHARED IMPORTED GLOBAL) else() add_library(vtkm::tbb UNKNOWN IMPORTED GLOBAL) endif() set_target_properties(vtkm::tbb PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "${TBB_INCLUDE_DIRS}") if(EXISTS "${TBB_LIBRARY_RELEASE}") vtkm_extract_real_library("${TBB_LIBRARY_RELEASE}" real_path) set_property(TARGET vtkm::tbb APPEND PROPERTY IMPORTED_CONFIGURATIONS RELEASE) set_target_properties(vtkm::tbb PROPERTIES IMPORTED_LINK_INTERFACE_LANGUAGES "CXX" IMPORTED_LOCATION_RELEASE "${real_path}" ) endif() if(EXISTS "${TBB_LIBRARY_DEBUG}") vtkm_extract_real_library("${TBB_LIBRARY_DEBUG}" real_path) set_property(TARGET vtkm::tbb APPEND PROPERTY IMPORTED_CONFIGURATIONS DEBUG) set_target_properties(vtkm::tbb PROPERTIES IMPORTED_LINK_INTERFACE_LANGUAGES "CXX" IMPORTED_LOCATION_DEBUG "${real_path}" ) endif() endif() if(VTKm_ENABLE_OPENMP AND NOT TARGET vtkm::openmp) cmake_minimum_required(VERSION 3.9...3.12 FATAL_ERROR) find_package(OpenMP 4.0 REQUIRED COMPONENTS CXX QUIET) add_library(vtkm::openmp INTERFACE IMPORTED GLOBAL) if(OpenMP_CXX_FLAGS) set_property(TARGET vtkm::openmp APPEND PROPERTY INTERFACE_COMPILE_OPTIONS $<$:${OpenMP_CXX_FLAGS}>) if(VTKm_ENABLE_CUDA) string(REPLACE ";" "," openmp_cuda_flags "-Xcompiler=${OpenMP_CXX_FLAGS}") set_property(TARGET vtkm::openmp APPEND PROPERTY INTERFACE_COMPILE_OPTIONS $<$:${openmp_cuda_flags}>) endif() endif() if(OpenMP_CXX_LIBRARIES) set_target_properties(vtkm::openmp PROPERTIES INTERFACE_LINK_LIBRARIES "${OpenMP_CXX_LIBRARIES}") endif() endif() if(VTKm_ENABLE_CUDA AND NOT TARGET vtkm::cuda) cmake_minimum_required(VERSION 3.9...3.12 FATAL_ERROR) enable_language(CUDA) #To work around https://gitlab.kitware.com/cmake/cmake/issues/17512 #we need to fix the CMAKE_CUDA_IMPLICIT_INCLUDE_DIRECTORIES variable if(${CMAKE_VERSION} VERSION_LESS 3.10 AND CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES) list(APPEND CMAKE_CUDA_IMPLICIT_INCLUDE_DIRECTORIES "${CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES}") endif() # Workaround a bug in older versions of cmake prevents linking with UNKNOWN IMPORTED libraries # refer to CMake issue #17245 if (CMAKE_VERSION VERSION_LESS 3.10) add_library(vtkm::cuda STATIC IMPORTED GLOBAL) else() add_library(vtkm::cuda UNKNOWN IMPORTED GLOBAL) endif() set_target_properties(vtkm::cuda PROPERTIES INTERFACE_COMPILE_OPTIONS $<$:--expt-relaxed-constexpr> ) # We can't have this location/lib empty, so we provide a location that is # valid and will have no effect on compilation if("x${CMAKE_CUDA_SIMULATE_ID}" STREQUAL "xMSVC") get_filename_component(VTKM_CUDA_BIN_DIR "${CMAKE_CUDA_COMPILER}" DIRECTORY) set_target_properties(vtkm::cuda PROPERTIES IMPORTED_LINK_INTERFACE_LANGUAGES "CXX" IMPORTED_LOCATION "${VTKM_CUDA_BIN_DIR}/../lib/x64/cudadevrt.lib" INTERFACE_INCLUDE_DIRECTORIES "${VTKM_CUDA_BIN_DIR}/../include/" ) else() list(GET CMAKE_CUDA_IMPLICIT_LINK_LIBRARIES 0 VTKM_CUDA_LIBRARY) if(IS_ABSOLUTE "${VTKM_CUDA_LIBRARY}") set_target_properties(vtkm::cuda PROPERTIES IMPORTED_LOCATION "${VTKM_CUDA_LIBRARY}") else() find_library(cuda_lib NAME ${VTKM_CUDA_LIBRARY} PATHS ${CMAKE_CUDA_IMPLICIT_LINK_DIRECTORIES} ) set(VTKM_CUDA_LIBRARY ${cuda_lib}) set_target_properties(vtkm::cuda PROPERTIES IMPORTED_LOCATION "${VTKM_CUDA_LIBRARY}") unset(cuda_lib CACHE) endif() set_target_properties(vtkm::cuda PROPERTIES IMPORTED_LINK_INTERFACE_LANGUAGES "CXX" INTERFACE_INCLUDE_DIRECTORIES "${CMAKE_CUDA_TOOLKIT_INCLUDE_DIRECTORIES}") endif() # add the -gencode flags so that all cuda code # way compiled properly #--------------------------------------------------------------------------- # Populates CMAKE_CUDA_FLAGS with the best set of flags to compile for a # given GPU architecture. The majority of developers should leave the # option at the default of 'native' which uses system introspection to # determine the smallest numerous of virtual and real architectures it # should target. # # The option of 'all' is provided for people generating libraries that # will deployed to any number of machines, it will compile all CUDA code # for all major virtual architectures, guaranteeing that the code will run # anywhere. # # The option 'none' is provided so that when being built as part of another # project, its own custom flags can be used. # # 1 - native # - Uses system introspection to determine compile flags # 2 - fermi # - Uses: --generate-code=arch=compute_20,code=sm_20 # 3 - kepler # - Uses: --generate-code=arch=compute_30,code=sm_30 # - Uses: --generate-code=arch=compute_35,code=sm_35 # 4 - maxwell # - Uses: --generate-code=arch=compute_50,code=sm_50 # 5 - pascal # - Uses: --generate-code=arch=compute_60,code=sm_60 # 6 - volta # - Uses: --generate-code=arch=compute_70,code=sm_70 # 7 - turing # - Uses: --generate-code=arch=compute_75code=sm_75 # 8 - all # - Uses: --generate-code=arch=compute_30,code=sm_30 # - Uses: --generate-code=arch=compute_35,code=sm_35 # - Uses: --generate-code=arch=compute_50,code=sm_50 # - Uses: --generate-code=arch=compute_60,code=sm_60 # - Uses: --generate-code=arch=compute_70,code=sm_70 # - Uses: --generate-code=arch=compute_75,code=sm_75 # 8 - none # #specify the property set(VTKm_CUDA_Architecture "native" CACHE STRING "Which GPU Architecture(s) to compile for") set_property(CACHE VTKm_CUDA_Architecture PROPERTY STRINGS native fermi kepler maxwell pascal volta turing all none) #detect what the property is set too if(VTKm_CUDA_Architecture STREQUAL "native") if(VTKM_CUDA_NATIVE_EXE_PROCESS_RAN_OUTPUT) #Use the cached value set(arch_flags ${VTKM_CUDA_NATIVE_EXE_PROCESS_RAN_OUTPUT}) else() #run execute_process to do auto_detection if(CMAKE_GENERATOR MATCHES "Visual Studio") set(args "-ccbin" "${CMAKE_CXX_COMPILER}" "--run" "${VTKm_CMAKE_MODULE_PATH}/VTKmDetectCUDAVersion.cu") elseif(CUDA_HOST_COMPILER) set(args "-ccbin" "${CUDA_HOST_COMPILER}" "--run" "${VTKm_CMAKE_MODULE_PATH}/VTKmDetectCUDAVersion.cu") else() set(args "--run" "${VTKm_CMAKE_MODULE_PATH}/VTKmDetectCUDAVersion.cu") endif() execute_process( COMMAND ${CMAKE_CUDA_COMPILER} ${args} RESULT_VARIABLE ran_properly OUTPUT_VARIABLE run_output WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}) if(ran_properly EQUAL 0) #find the position of the "--generate-code" output. With some compilers such as #msvc we get compile output plus run output. So we need to strip out just the #run output string(FIND "${run_output}" "--generate-code" position) string(SUBSTRING "${run_output}" ${position} -1 run_output) set(arch_flags ${run_output}) set(VTKM_CUDA_NATIVE_EXE_PROCESS_RAN_OUTPUT ${run_output} CACHE INTERNAL "device type(s) for cuda[native]") else() set(VTKm_CUDA_Architecture "kepler") endif() endif() endif() #since when we are native we can fail, and fall back to "kepler" these have #to happen after, and separately of the native check if(VTKm_CUDA_Architecture STREQUAL "fermi") set(arch_flags --generate-code=arch=compute_20,code=sm_20) elseif(VTKm_CUDA_Architecture STREQUAL "kepler") set(arch_flags --generate-code=arch=compute_30,code=sm_30 --generate-code=arch=compute_35,code=sm_35) elseif(VTKm_CUDA_Architecture STREQUAL "maxwell") set(arch_flags --generate-code=arch=compute_50,code=sm_50) elseif(VTKm_CUDA_Architecture STREQUAL "pascal") set(arch_flags --generate-code=arch=compute_60,code=sm_60) elseif(VTKm_CUDA_Architecture STREQUAL "volta") set(arch_flags --generate-code=arch=compute_70,code=sm_70) elseif(VTKm_CUDA_Architecture STREQUAL "turing") set(arch_flags --generate-code=arch=compute_75,code=sm_75) elseif(VTKm_CUDA_Architecture STREQUAL "all") set(arch_flags --generate-code=arch=compute_30,code=sm_30 --generate-code=arch=compute_35,code=sm_35 --generate-code=arch=compute_50,code=sm_50 --generate-code=arch=compute_60,code=sm_60 --generate-code=arch=compute_70,code=sm_70 --generate-code=arch=compute_75,code=sm_75) endif() string(REPLACE ";" " " arch_flags "${arch_flags}") set(CMAKE_CUDA_FLAGS "${CMAKE_CUDA_FLAGS} ${arch_flags}") set_target_properties(vtkm::cuda PROPERTIES VTKm_CUDA_Architecture_Flags "${arch_flags}") endif()