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# Copyright (C) 2018 Intel Corporation
#
# SPDX-License-Identifier: Apache-2.0
#
cmake_policy(SET CMP0054 NEW)
if (APPLE OR WIN32)
find_path(OMP_INC omp.h)
find_library(OMP_LIB iomp5
PATHS ${OMP}/lib)
if (OMP_INC AND OMP_LIB)
set(HAVE_OMP TRUE)
get_filename_component(OMP_LIB_DIR "${OMP_LIB}" PATH)
else()
if (THREADING STREQUAL "OMP")
find_package(OpenMP)
if (NOT OPENMP_FOUND)
message(WARNING "OpenMP not found. OpenMP support will be disabled.")
endif()
endif()
endif()
endif()
macro(enable_omp)
if (APPLE) ## MacOS
if (HAVE_OMP)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fopenmp=libiomp5")
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -L${OMP_LIB_DIR}")
else()
message(WARNING "Was trying to enable OMP for some target. However OpenMP was not detected on system.")
endif()
elseif(UNIX) # Linux
add_definitions(-fopenmp)
elseif(WIN32) # Windows
if (THREADING STREQUAL "OMP")
set(OPENMP_FLAGS "/Qopenmp /openmp")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${CMAKE_CCXX_FLAGS} ${OPENMP_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CMAKE_CCXX_FLAGS} ${OPENMP_FLAGS}")
endif()
endif()
if (ENABLE_INTEL_OMP)
if (WIN32)
find_library(intel_omp_lib
libiomp5md
PATHS ${OMP}/lib ${ICCLIB})
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /nodefaultlib:vcomp")
set (CMAKE_SHARED_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /nodefaultlib:vcomp")
else()
find_library(intel_omp_lib
iomp5
PATHS ${OMP}/lib)
endif()
endif()
endmacro(enable_omp)
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