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1cmake_minimum_required(VERSION 3.20.0)2set(LLVM_SUBPROJECT_TITLE "OpenMP")3 4set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake)5 6# Add path for custom modules7list(INSERT CMAKE_MODULE_PATH 08 "${CMAKE_CURRENT_SOURCE_DIR}/cmake"9 "${LLVM_COMMON_CMAKE_UTILS}/Modules"10 )11 12# llvm/runtimes/ will set OPENMP_STANDALONE_BUILD.13if (OPENMP_STANDALONE_BUILD OR "${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_CURRENT_SOURCE_DIR}")14 set(OPENMP_STANDALONE_BUILD TRUE)15 project(openmp C CXX ASM)16else()17 set(OPENMP_STANDALONE_BUILD FALSE)18endif()19 20# Must go below project(..)21include(GNUInstallDirs)22 23if (OPENMP_STANDALONE_BUILD)24 set(LLVM_TREE_AVAILABLE False)25 26 # CMAKE_BUILD_TYPE was not set, default to Release.27 if (NOT CMAKE_BUILD_TYPE)28 set(CMAKE_BUILD_TYPE Release)29 endif()30 31 # Group common settings.32 set(OPENMP_ENABLE_WERROR FALSE CACHE BOOL33 "Enable -Werror flags to turn warnings into errors for supporting compilers.")34 set(OPENMP_LIBDIR_SUFFIX "" CACHE STRING35 "Suffix of lib installation directory, e.g. 64 => lib64")36 # Do not use OPENMP_LIBDIR_SUFFIX directly, use OPENMP_INSTALL_LIBDIR.37 set(OPENMP_INSTALL_LIBDIR "lib${OPENMP_LIBDIR_SUFFIX}" CACHE STRING38 "Path where built OpenMP libraries should be installed.")39 40 # Group test settings.41 set(OPENMP_TEST_C_COMPILER ${CMAKE_C_COMPILER} CACHE STRING42 "C compiler to use for testing OpenMP runtime libraries.")43 set(OPENMP_TEST_CXX_COMPILER ${CMAKE_CXX_COMPILER} CACHE STRING44 "C++ compiler to use for testing OpenMP runtime libraries.")45 set(OPENMP_TEST_Fortran_COMPILER ${CMAKE_Fortran_COMPILER} CACHE STRING46 "FORTRAN compiler to use for testing OpenMP runtime libraries.")47 set(OPENMP_LLVM_TOOLS_DIR "" CACHE PATH "Path to LLVM tools for testing.")48 49 set(CMAKE_CXX_STANDARD 17 CACHE STRING "C++ standard to conform to")50 set(CMAKE_CXX_STANDARD_REQUIRED NO)51 set(CMAKE_CXX_EXTENSIONS NO)52else()53 # Usually <llvm-project>/runtimes/CMakeLists.txt sets LLVM_TREE_AVAILABLE and54 # we assume it is not available otherwise. The exception is that we are in an55 # LLVM_ENABLE_PROJECTS=openmp build, the LLVM tree is actually available.56 # Note that this build mode has been deprecated.57 # See https://github.com/llvm/llvm-project/issues/12401458 if (NOT LLVM_RUNTIMES_BUILD AND "openmp" IN_LIST LLVM_ENABLE_PROJECTS)59 set(LLVM_TREE_AVAILABLE True)60 endif ()61 62 set(OPENMP_ENABLE_WERROR ${LLVM_ENABLE_WERROR})63 64 # When building in tree we install the runtime according to the LLVM settings.65 if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)66 set(OPENMP_INSTALL_LIBDIR lib${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE} CACHE STRING67 "Path where built openmp libraries should be installed.")68 else()69 set(OPENMP_INSTALL_LIBDIR "lib${LLVM_LIBDIR_SUFFIX}" CACHE STRING70 "Path where built OpenMP libraries should be installed.")71 endif()72 73 if (NOT MSVC)74 set(OPENMP_TEST_C_COMPILER ${LLVM_TOOLS_BINARY_DIR}/clang)75 set(OPENMP_TEST_CXX_COMPILER ${LLVM_TOOLS_BINARY_DIR}/clang++)76 else()77 set(OPENMP_TEST_C_COMPILER ${LLVM_TOOLS_BINARY_DIR}/clang.exe)78 set(OPENMP_TEST_CXX_COMPILER ${LLVM_TOOLS_BINARY_DIR}/clang++.exe)79 endif()80 81 # Set fortran test compiler if flang is found82 if (EXISTS "${OPENMP_TEST_Fortran_COMPILER}")83 message("Using local flang build at ${OPENMP_TEST_Fortran_COMPILER}")84 else()85 unset(OPENMP_TEST_Fortran_COMPILER)86 endif()87 88 # If not standalone, set CMAKE_CXX_STANDARD but don't set the global cache value,89 # only set it locally for OpenMP.90 set(CMAKE_CXX_STANDARD 17)91 set(CMAKE_CXX_STANDARD_REQUIRED NO)92 set(CMAKE_CXX_EXTENSIONS NO)93endif()94 95# Check and set up common compiler flags.96include(config-ix)97include(HandleOpenMPOptions)98 99# Check for flang100set(OPENMP_TEST_Fortran_COMPILER_default "")101if (CMAKE_Fortran_COMPILER)102 set(OPENMP_TEST_Fortran_COMPILER_default "${CMAKE_Fortran_COMPILER}")103endif ()104set(OPENMP_TEST_Fortran_COMPILER "${OPENMP_TEST_Fortran_COMPILER_default}" CACHE STRING105 "Fortran compiler to use for testing OpenMP runtime libraries.")106 107# Set up testing infrastructure.108include(OpenMPTesting)109 110set(OPENMP_TEST_FLAGS "" CACHE STRING111 "Extra compiler flags to send to the test compiler.")112set(OPENMP_TEST_OPENMP_FLAGS ${OPENMP_TEST_COMPILER_OPENMP_FLAGS} CACHE STRING113 "OpenMP compiler flag to use for testing OpenMP runtime libraries.")114 115set(ENABLE_LIBOMPTARGET ON)116# Currently libomptarget cannot be compiled on Windows or MacOS X.117# Since the device plugins are only supported on Linux anyway,118# there is no point in trying to compile libomptarget on other OSes.119# 32-bit systems are not supported either.120if (APPLE OR WIN32 OR WASM OR NOT "cxx_std_17" IN_LIST CMAKE_CXX_COMPILE_FEATURES121 OR NOT CMAKE_SIZEOF_VOID_P EQUAL 8 OR "${CMAKE_SYSTEM_NAME}" MATCHES "AIX")122 set(ENABLE_LIBOMPTARGET OFF)123endif()124 125option(OPENMP_ENABLE_LIBOMPTARGET "Enable building libomptarget for offloading."126 ${ENABLE_LIBOMPTARGET})127option(OPENMP_ENABLE_LIBOMP_PROFILING "Enable time profiling for libomp." OFF)128 129# Header install location130if(NOT LLVM_TREE_AVAILABLE)131 set(LIBOMP_HEADERS_INSTALL_PATH "${CMAKE_INSTALL_INCLUDEDIR}")132else()133 include(GetClangResourceDir)134 get_clang_resource_dir(LIBOMP_HEADERS_INSTALL_PATH SUBDIR include)135endif()136 137# Use the current compiler target to determine the appropriate runtime to build.138if("${LLVM_DEFAULT_TARGET_TRIPLE}" MATCHES "^amdgcn|^nvptx" OR139 "${CMAKE_CXX_COMPILER_TARGET}" MATCHES "^amdgcn|^nvptx")140 add_subdirectory(device)141else()142 # Build host runtime library, after LIBOMPTARGET variables are set since they143 # are needed to enable time profiling support in the OpenMP runtime.144 add_subdirectory(runtime)145 146 set(ENABLE_OMPT_TOOLS ON)147 # Currently tools are not tested well on Windows or MacOS X.148 if (APPLE OR WIN32)149 set(ENABLE_OMPT_TOOLS OFF)150 endif()151 152 option(OPENMP_ENABLE_OMPT_TOOLS "Enable building ompt based tools for OpenMP."153 ${ENABLE_OMPT_TOOLS})154 if (OPENMP_ENABLE_OMPT_TOOLS)155 add_subdirectory(tools)156 endif()157 158 # Propagate OMPT support to offload159 if(NOT ${OPENMP_STANDALONE_BUILD})160 set(LIBOMP_HAVE_OMPT_SUPPORT ${LIBOMP_HAVE_OMPT_SUPPORT} PARENT_SCOPE)161 set(LIBOMP_OMP_TOOLS_INCLUDE_DIR ${LIBOMP_OMP_TOOLS_INCLUDE_DIR} PARENT_SCOPE)162 endif()163 164 option(OPENMP_MSVC_NAME_SCHEME "Build dll with MSVC naming scheme." OFF)165 166 # Build libompd.so167 add_subdirectory(libompd)168 169 # Build documentation170 add_subdirectory(docs)171 172 # Now that we have seen all testsuites, create the check-openmp target.173 construct_check_openmp_target()174endif()175