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cmake_minimum_required(VERSION 3.20.0)
set(LLVM_SUBPROJECT_TITLE "OpenMP")
set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake)
# Add path for custom modules
list(INSERT CMAKE_MODULE_PATH 0
"${CMAKE_CURRENT_SOURCE_DIR}/cmake"
"${LLVM_COMMON_CMAKE_UTILS}/Modules"
)
# llvm/runtimes/ will set OPENMP_STANDALONE_BUILD.
if (OPENMP_STANDALONE_BUILD OR "${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_CURRENT_SOURCE_DIR}")
set(OPENMP_STANDALONE_BUILD TRUE)
project(openmp C CXX ASM)
else()
set(OPENMP_STANDALONE_BUILD FALSE)
endif()
# Must go below project(..)
include(GNUInstallDirs)
if (OPENMP_STANDALONE_BUILD)
# CMAKE_BUILD_TYPE was not set, default to Release.
if (NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE Release)
endif()
# Group common settings.
set(OPENMP_ENABLE_WERROR FALSE CACHE BOOL
"Enable -Werror flags to turn warnings into errors for supporting compilers.")
set(OPENMP_LIBDIR_SUFFIX "" CACHE STRING
"Suffix of lib installation directory, e.g. 64 => lib64")
# Do not use OPENMP_LIBDIR_SUFFIX directly, use OPENMP_INSTALL_LIBDIR.
set(OPENMP_INSTALL_LIBDIR "lib${OPENMP_LIBDIR_SUFFIX}" CACHE STRING
"Path where built OpenMP libraries should be installed.")
# Group test settings.
set(OPENMP_TEST_C_COMPILER ${CMAKE_C_COMPILER} CACHE STRING
"C compiler to use for testing OpenMP runtime libraries.")
set(OPENMP_TEST_CXX_COMPILER ${CMAKE_CXX_COMPILER} CACHE STRING
"C++ compiler to use for testing OpenMP runtime libraries.")
set(OPENMP_TEST_Fortran_COMPILER ${CMAKE_Fortran_COMPILER} CACHE STRING
"FORTRAN compiler to use for testing OpenMP runtime libraries.")
set(OPENMP_LLVM_TOOLS_DIR "" CACHE PATH "Path to LLVM tools for testing.")
set(CMAKE_CXX_STANDARD 17 CACHE STRING "C++ standard to conform to")
set(CMAKE_CXX_STANDARD_REQUIRED NO)
set(CMAKE_CXX_EXTENSIONS NO)
else()
set(OPENMP_ENABLE_WERROR ${LLVM_ENABLE_WERROR})
# When building in tree we install the runtime according to the LLVM settings.
if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
set(OPENMP_INSTALL_LIBDIR lib${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE} CACHE STRING
"Path where built openmp libraries should be installed.")
else()
set(OPENMP_INSTALL_LIBDIR "lib${LLVM_LIBDIR_SUFFIX}" CACHE STRING
"Path where built OpenMP libraries should be installed.")
endif()
if (NOT MSVC)
set(OPENMP_TEST_C_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR}/clang)
set(OPENMP_TEST_CXX_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR}/clang++)
else()
set(OPENMP_TEST_C_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR}/clang.exe)
set(OPENMP_TEST_CXX_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR}/clang++.exe)
endif()
# Check for flang
if (NOT MSVC)
set(OPENMP_TEST_Fortran_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR}/flang-new)
else()
set(OPENMP_TEST_Fortran_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR}/flang-new.exe)
endif()
# Set fortran test compiler if flang is found
if (EXISTS "${OPENMP_TEST_Fortran_COMPILER}")
message("Using local flang build at ${OPENMP_TEST_Fortran_COMPILER}")
else()
unset(OPENMP_TEST_Fortran_COMPILER)
endif()
# If not standalone, set CMAKE_CXX_STANDARD but don't set the global cache value,
# only set it locally for OpenMP.
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED NO)
set(CMAKE_CXX_EXTENSIONS NO)
endif()
# Check and set up common compiler flags.
include(config-ix)
include(HandleOpenMPOptions)
# Set up testing infrastructure.
include(OpenMPTesting)
set(OPENMP_TEST_FLAGS "" CACHE STRING
"Extra compiler flags to send to the test compiler.")
set(OPENMP_TEST_OPENMP_FLAGS ${OPENMP_TEST_COMPILER_OPENMP_FLAGS} CACHE STRING
"OpenMP compiler flag to use for testing OpenMP runtime libraries.")
set(ENABLE_LIBOMPTARGET ON)
# Currently libomptarget cannot be compiled on Windows or MacOS X.
# Since the device plugins are only supported on Linux anyway,
# there is no point in trying to compile libomptarget on other OSes.
# 32-bit systems are not supported either.
if (APPLE OR WIN32 OR WASM OR NOT "cxx_std_17" IN_LIST CMAKE_CXX_COMPILE_FEATURES
OR NOT CMAKE_SIZEOF_VOID_P EQUAL 8 OR ${CMAKE_SYSTEM_NAME} MATCHES "AIX")
set(ENABLE_LIBOMPTARGET OFF)
endif()
option(OPENMP_ENABLE_LIBOMPTARGET "Enable building libomptarget for offloading."
${ENABLE_LIBOMPTARGET})
option(OPENMP_ENABLE_LIBOMP_PROFILING "Enable time profiling for libomp." OFF)
# Header install location
if(${OPENMP_STANDALONE_BUILD})
set(LIBOMP_HEADERS_INSTALL_PATH "${CMAKE_INSTALL_INCLUDEDIR}")
else()
include(GetClangResourceDir)
get_clang_resource_dir(LIBOMP_HEADERS_INSTALL_PATH SUBDIR include)
endif()
# Build host runtime library, after LIBOMPTARGET variables are set since they are needed
# to enable time profiling support in the OpenMP runtime.
add_subdirectory(runtime)
set(ENABLE_OMPT_TOOLS ON)
# Currently tools are not tested well on Windows or MacOS X.
if (APPLE OR WIN32)
set(ENABLE_OMPT_TOOLS OFF)
endif()
option(OPENMP_ENABLE_OMPT_TOOLS "Enable building ompt based tools for OpenMP."
${ENABLE_OMPT_TOOLS})
if (OPENMP_ENABLE_OMPT_TOOLS)
add_subdirectory(tools)
endif()
# Propagate OMPT support to offload
if(NOT ${OPENMP_STANDALONE_BUILD})
set(LIBOMP_HAVE_OMPT_SUPPORT ${LIBOMP_HAVE_OMPT_SUPPORT} PARENT_SCOPE)
set(LIBOMP_OMP_TOOLS_INCLUDE_DIR ${LIBOMP_OMP_TOOLS_INCLUDE_DIR} PARENT_SCOPE)
endif()
option(OPENMP_MSVC_NAME_SCHEME "Build dll with MSVC naming scheme." OFF)
# Build libompd.so
add_subdirectory(libompd)
# Build documentation
add_subdirectory(docs)
# Now that we have seen all testsuites, create the check-openmp target.
construct_check_openmp_target()
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