1 cmake_minimum_required(VERSION 3.20.0)
2 set(LLVM_SUBPROJECT_TITLE "OpenMP")
4 set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake)
6 # Add path for custom modules
7 list(INSERT CMAKE_MODULE_PATH 0
8 "${CMAKE_CURRENT_SOURCE_DIR}/cmake"
9 "${LLVM_COMMON_CMAKE_UTILS}/Modules"
12 # llvm/runtimes/ will set OPENMP_STANDALONE_BUILD.
13 if (OPENMP_STANDALONE_BUILD OR "${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_CURRENT_SOURCE_DIR}")
14 set(OPENMP_STANDALONE_BUILD TRUE)
15 project(openmp C CXX ASM)
17 set(OPENMP_STANDALONE_BUILD FALSE)
20 # Must go below project(..)
21 include(GNUInstallDirs)
23 if (OPENMP_STANDALONE_BUILD)
24 # CMAKE_BUILD_TYPE was not set, default to Release.
25 if (NOT CMAKE_BUILD_TYPE)
26 set(CMAKE_BUILD_TYPE Release)
29 # Group common settings.
30 set(OPENMP_ENABLE_WERROR FALSE CACHE BOOL
31 "Enable -Werror flags to turn warnings into errors for supporting compilers.")
32 set(OPENMP_LIBDIR_SUFFIX "" CACHE STRING
33 "Suffix of lib installation directory, e.g. 64 => lib64")
34 # Do not use OPENMP_LIBDIR_SUFFIX directly, use OPENMP_INSTALL_LIBDIR.
35 set(OPENMP_INSTALL_LIBDIR "lib${OPENMP_LIBDIR_SUFFIX}" CACHE STRING
36 "Path where built OpenMP libraries should be installed.")
38 # Group test settings.
39 set(OPENMP_TEST_C_COMPILER ${CMAKE_C_COMPILER} CACHE STRING
40 "C compiler to use for testing OpenMP runtime libraries.")
41 set(OPENMP_TEST_CXX_COMPILER ${CMAKE_CXX_COMPILER} CACHE STRING
42 "C++ compiler to use for testing OpenMP runtime libraries.")
43 set(OPENMP_TEST_Fortran_COMPILER ${CMAKE_Fortran_COMPILER} CACHE STRING
44 "FORTRAN compiler to use for testing OpenMP runtime libraries.")
45 set(OPENMP_LLVM_TOOLS_DIR "" CACHE PATH "Path to LLVM tools for testing.")
47 set(CMAKE_CXX_STANDARD 17 CACHE STRING "C++ standard to conform to")
48 set(CMAKE_CXX_STANDARD_REQUIRED NO)
49 set(CMAKE_CXX_EXTENSIONS NO)
51 set(OPENMP_ENABLE_WERROR ${LLVM_ENABLE_WERROR})
53 # When building in tree we install the runtime according to the LLVM settings.
54 if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
55 set(OPENMP_INSTALL_LIBDIR lib${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE} CACHE STRING
56 "Path where built openmp libraries should be installed.")
58 set(OPENMP_INSTALL_LIBDIR "lib${LLVM_LIBDIR_SUFFIX}" CACHE STRING
59 "Path where built OpenMP libraries should be installed.")
63 set(OPENMP_TEST_C_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR}/clang)
64 set(OPENMP_TEST_CXX_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR}/clang++)
66 set(OPENMP_TEST_C_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR}/clang.exe)
67 set(OPENMP_TEST_CXX_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR}/clang++.exe)
72 set(OPENMP_TEST_Fortran_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR}/flang)
74 set(OPENMP_TEST_Fortran_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR}/flang.exe)
77 # Set fortran test compiler if flang is found
78 if (EXISTS "${OPENMP_TEST_Fortran_COMPILER}")
79 message("Using local flang build at ${OPENMP_TEST_Fortran_COMPILER}")
81 unset(OPENMP_TEST_Fortran_COMPILER)
84 # If not standalone, set CMAKE_CXX_STANDARD but don't set the global cache value,
85 # only set it locally for OpenMP.
86 set(CMAKE_CXX_STANDARD 17)
87 set(CMAKE_CXX_STANDARD_REQUIRED NO)
88 set(CMAKE_CXX_EXTENSIONS NO)
91 # Check and set up common compiler flags.
93 include(HandleOpenMPOptions)
95 # Set up testing infrastructure.
96 include(OpenMPTesting)
98 set(OPENMP_TEST_FLAGS "" CACHE STRING
99 "Extra compiler flags to send to the test compiler.")
100 set(OPENMP_TEST_OPENMP_FLAGS ${OPENMP_TEST_COMPILER_OPENMP_FLAGS} CACHE STRING
101 "OpenMP compiler flag to use for testing OpenMP runtime libraries.")
103 set(ENABLE_LIBOMPTARGET ON)
104 # Currently libomptarget cannot be compiled on Windows or MacOS X.
105 # Since the device plugins are only supported on Linux anyway,
106 # there is no point in trying to compile libomptarget on other OSes.
107 # 32-bit systems are not supported either.
108 if (APPLE OR WIN32 OR WASM OR NOT "cxx_std_17" IN_LIST CMAKE_CXX_COMPILE_FEATURES
109 OR NOT CMAKE_SIZEOF_VOID_P EQUAL 8 OR ${CMAKE_SYSTEM_NAME} MATCHES "AIX")
110 set(ENABLE_LIBOMPTARGET OFF)
113 option(OPENMP_ENABLE_LIBOMPTARGET "Enable building libomptarget for offloading."
114 ${ENABLE_LIBOMPTARGET})
115 option(OPENMP_ENABLE_LIBOMP_PROFILING "Enable time profiling for libomp." OFF)
117 # Header install location
118 if(${OPENMP_STANDALONE_BUILD})
119 set(LIBOMP_HEADERS_INSTALL_PATH "${CMAKE_INSTALL_INCLUDEDIR}")
121 include(GetClangResourceDir)
122 get_clang_resource_dir(LIBOMP_HEADERS_INSTALL_PATH SUBDIR include)
125 # Build host runtime library, after LIBOMPTARGET variables are set since they are needed
126 # to enable time profiling support in the OpenMP runtime.
127 add_subdirectory(runtime)
129 set(ENABLE_OMPT_TOOLS ON)
130 # Currently tools are not tested well on Windows or MacOS X.
132 set(ENABLE_OMPT_TOOLS OFF)
135 option(OPENMP_ENABLE_OMPT_TOOLS "Enable building ompt based tools for OpenMP."
136 ${ENABLE_OMPT_TOOLS})
137 if (OPENMP_ENABLE_OMPT_TOOLS)
138 add_subdirectory(tools)
141 # Propagate OMPT support to offload
142 if(NOT ${OPENMP_STANDALONE_BUILD})
143 set(LIBOMP_HAVE_OMPT_SUPPORT ${LIBOMP_HAVE_OMPT_SUPPORT} PARENT_SCOPE)
144 set(LIBOMP_OMP_TOOLS_INCLUDE_DIR ${LIBOMP_OMP_TOOLS_INCLUDE_DIR} PARENT_SCOPE)
147 option(OPENMP_MSVC_NAME_SCHEME "Build dll with MSVC naming scheme." OFF)
150 add_subdirectory(libompd)
152 # Build documentation
153 add_subdirectory(docs)
155 # Now that we have seen all testsuites, create the check-openmp target.
156 construct_check_openmp_target()