1010#
1111##===----------------------------------------------------------------------===##
1212
13- if ("${CMAKE_SOURCE_DIR} " STREQUAL "${CMAKE_CURRENT_SOURCE_DIR} " )
14- message (FATAL_ERROR "Direct configuration not supported, please use parent directory!" )
13+ set (ENABLE_LIBOMPTARGET ON )
14+ # Currently libomptarget cannot be compiled on Windows or MacOS X.
15+ # Since the device plugins are only supported on Linux anyway,
16+ # there is no point in trying to compile libomptarget on other OSes.
17+ # 32-bit systems are not supported either.
18+ if (APPLE OR WIN32 OR NOT "cxx_std_17" IN_LIST CMAKE_CXX_COMPILE_FEATURES OR NOT CMAKE_SIZEOF_VOID_P EQUAL 8 )
19+ set (ENABLE_LIBOMPTARGET OFF )
1520endif ()
1621
17- # Add cmake directory to search for custom cmake functions.
18- set (CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR} /cmake/Modules ${CMAKE_MODULE_PATH} )
22+ option (OPENMP_ENABLE_LIBOMPTARGET "Enable building libomptarget for offloading."
23+ ${ENABLE_LIBOMPTARGET} )
24+ if (OPENMP_ENABLE_LIBOMPTARGET )
25+ # Check that the library can actually be built.
26+ if (APPLE OR WIN32 )
27+ message (FATAL_ERROR "libomptarget cannot be built on Windows and MacOS X!" )
28+ elseif (NOT "cxx_std_17" IN_LIST CMAKE_CXX_COMPILE_FEATURES )
29+ message (FATAL_ERROR "Host compiler must support C++17 to build libomptarget!" )
30+ elseif (NOT CMAKE_SIZEOF_VOID_P EQUAL 8 )
31+ message (FATAL_ERROR "libomptarget on 32-bit systems are not supported!" )
32+ endif ()
33+ endif ()
34+
35+ # TODO: Leftover from the move, could probably be just LLVM_LIBDIR_SUFFIX everywhere.
36+ set (OFFLOAD_INSTALL_LIBDIR "lib${LLVM_LIBDIR_SUFFIX} " )
37+
38+ set (LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR} /cmake )
39+
40+ # Add path for custom modules
41+ list (INSERT CMAKE_MODULE_PATH 0
42+ "${CMAKE_CURRENT_SOURCE_DIR} /cmake"
43+ "${LLVM_COMMON_CMAKE_UTILS} /Modules"
44+ )
45+
46+ if (OPENMP_STANDALONE_BUILD )
47+ # CMAKE_BUILD_TYPE was not set, default to Release.
48+ if (NOT CMAKE_BUILD_TYPE )
49+ set (CMAKE_BUILD_TYPE Release )
50+ endif ()
51+
52+ # Group common settings.
53+ set (OPENMP_ENABLE_WERROR FALSE CACHE BOOL
54+ "Enable -Werror flags to turn warnings into errors for supporting compilers." )
55+ set (OPENMP_LIBDIR_SUFFIX "" CACHE STRING
56+ "Suffix of lib installation directory, e.g. 64 => lib64" )
57+ # Do not use OPENMP_LIBDIR_SUFFIX directly, use OPENMP_INSTALL_LIBDIR.
58+ set (OPENMP_INSTALL_LIBDIR "lib${OPENMP_LIBDIR_SUFFIX} " )
59+
60+ # Group test settings.
61+ set (OPENMP_TEST_C_COMPILER ${CMAKE_C_COMPILER} CACHE STRING
62+ "C compiler to use for testing OpenMP runtime libraries." )
63+ set (OPENMP_TEST_CXX_COMPILER ${CMAKE_CXX_COMPILER} CACHE STRING
64+ "C++ compiler to use for testing OpenMP runtime libraries." )
65+ set (OPENMP_TEST_Fortran_COMPILER ${CMAKE_Fortran_COMPILER} CACHE STRING
66+ "FORTRAN compiler to use for testing OpenMP runtime libraries." )
67+ set (OPENMP_LLVM_TOOLS_DIR "" CACHE PATH "Path to LLVM tools for testing." )
68+
69+ set (CMAKE_CXX_STANDARD 17 CACHE STRING "C++ standard to conform to" )
70+ set (CMAKE_CXX_STANDARD_REQUIRED NO )
71+ set (CMAKE_CXX_EXTENSIONS NO )
72+ else ()
73+ set (OPENMP_ENABLE_WERROR ${LLVM_ENABLE_WERROR} )
74+ # If building in tree, we honor the same install suffix LLVM uses.
75+ set (OPENMP_INSTALL_LIBDIR "lib${LLVM_LIBDIR_SUFFIX} " )
76+
77+ if (NOT MSVC )
78+ set (OPENMP_TEST_C_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR} /clang )
79+ set (OPENMP_TEST_CXX_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR} /clang++ )
80+ else ()
81+ set (OPENMP_TEST_C_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR} /clang.exe )
82+ set (OPENMP_TEST_CXX_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR} /clang++.exe )
83+ endif ()
84+
85+ # Check for flang
86+ if (NOT MSVC )
87+ set (OPENMP_TEST_Fortran_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR} /flang-new )
88+ else ()
89+ set (OPENMP_TEST_Fortran_COMPILER ${LLVM_RUNTIME_OUTPUT_INTDIR} /flang-new.exe )
90+ endif ()
91+
92+ # Set fortran test compiler if flang is found
93+ if (EXISTS "${OPENMP_TEST_Fortran_COMPILER} " )
94+ message ("Using local flang build at ${OPENMP_TEST_Fortran_COMPILER} " )
95+ else ()
96+ unset (OPENMP_TEST_Fortran_COMPILER )
97+ endif ()
98+
99+ # If not standalone, set CMAKE_CXX_STANDARD but don't set the global cache value,
100+ # only set it locally for OpenMP.
101+ set (CMAKE_CXX_STANDARD 17 )
102+ set (CMAKE_CXX_STANDARD_REQUIRED NO )
103+ set (CMAKE_CXX_EXTENSIONS NO )
104+ endif ()
19105
20106# Set the path of all resulting libraries to a unified location so that it can
21107# be used for testing.
@@ -36,6 +122,9 @@ include(LibomptargetUtils)
36122# Get dependencies for the different components of the project.
37123include (LibomptargetGetDependencies )
38124
125+ # Set up testing infrastructure.
126+ include (OpenMPTesting )
127+
39128# LLVM source tree is required at build time for libomptarget
40129if (NOT LIBOMPTARGET_LLVM_INCLUDE_DIRS )
41130 message (FATAL_ERROR "Missing definition for LIBOMPTARGET_LLVM_INCLUDE_DIRS" )
@@ -129,11 +218,6 @@ set(LIBOMPTARGET_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/include)
129218message (STATUS "OpenMP tools dir in libomptarget: ${LIBOMP_OMP_TOOLS_INCLUDE_DIR} " )
130219include_directories (${LIBOMP_OMP_TOOLS_INCLUDE_DIR} )
131220
132- # Definitions for testing, for reuse when testing libomptarget-nvptx.
133- set (LIBOMPTARGET_OPENMP_HEADER_FOLDER "${LIBOMP_INCLUDE_DIR} " CACHE STRING
134- "Path to folder containing omp.h" )
135- set (LIBOMPTARGET_OPENMP_HOST_RTL_FOLDER "${LIBOMP_LIBRARY_DIR} " CACHE STRING
136- "Path to folder containing libomp.so, and libLLVMSupport.so with profiling enabled" )
137221set (LIBOMPTARGET_LLVM_LIBRARY_DIR "${LLVM_LIBRARY_DIR} " CACHE STRING
138222 "Path to folder containing llvm library libomptarget.so" )
139223set (LIBOMPTARGET_LLVM_LIBRARY_INTDIR "${LIBOMPTARGET_INTDIR} " CACHE STRING
@@ -158,3 +242,5 @@ if (EXISTS ${LLVM_THIRD_PARTY_DIR}/unittest)
158242 endif ()
159243 add_subdirectory (unittests )
160244endif ()
245+
246+ construct_check_offload_target ()
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