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+# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+#.rst:
+# FindOpenCL
+# ----------
+#
+# Try to find OpenCL
+#
+# IMPORTED Targets
+# ^^^^^^^^^^^^^^^^
+#
+# This module defines :prop_tgt:`IMPORTED` target ``OpenCL::OpenCL``, if
+# OpenCL has been found.
+#
+# Result Variables
+# ^^^^^^^^^^^^^^^^
+#
+# This module defines the following variables::
+#
+# OpenCL_FOUND - True if OpenCL was found
+# OpenCL_INCLUDE_DIRS - include directories for OpenCL
+# OpenCL_LIBRARIES - link against this library to use OpenCL
+# OpenCL_VERSION_STRING - Highest supported OpenCL version (eg. 1.2)
+# OpenCL_VERSION_MAJOR - The major version of the OpenCL implementation
+# OpenCL_VERSION_MINOR - The minor version of the OpenCL implementation
+#
+# The module will also define two cache variables::
+#
+# OpenCL_INCLUDE_DIR - the OpenCL include directory
+# OpenCL_LIBRARY - the path to the OpenCL library
+#
+
+function(_FIND_OPENCL_VERSION)
+ include(CheckSymbolExists)
+ include(CMakePushCheckState)
+ set(CMAKE_REQUIRED_QUIET ${OpenCL_FIND_QUIETLY})
+
+ CMAKE_PUSH_CHECK_STATE()
+ foreach(VERSION "2_2" "2_1" "2_0" "1_2" "1_1" "1_0")
+ set(CMAKE_REQUIRED_INCLUDES "${OpenCL_INCLUDE_DIR}")
+
+ if(APPLE)
+ CHECK_SYMBOL_EXISTS(
+ CL_VERSION_${VERSION}
+ "${OpenCL_INCLUDE_DIR}/Headers/cl.h"
+ OPENCL_VERSION_${VERSION})
+ else()
+ CHECK_SYMBOL_EXISTS(
+ CL_VERSION_${VERSION}
+ "${OpenCL_INCLUDE_DIR}/CL/cl.h"
+ OPENCL_VERSION_${VERSION})
+ endif()
+
+ if(OPENCL_VERSION_${VERSION})
+ string(REPLACE "_" "." VERSION "${VERSION}")
+ set(OpenCL_VERSION_STRING ${VERSION} PARENT_SCOPE)
+ string(REGEX MATCHALL "[0-9]+" version_components "${VERSION}")
+ list(GET version_components 0 major_version)
+ list(GET version_components 1 minor_version)
+ set(OpenCL_VERSION_MAJOR ${major_version} PARENT_SCOPE)
+ set(OpenCL_VERSION_MINOR ${minor_version} PARENT_SCOPE)
+ break()
+ endif()
+ endforeach()
+ CMAKE_POP_CHECK_STATE()
+endfunction()
+
+find_path(OpenCL_INCLUDE_DIR
+ NAMES
+ CL/cl.h OpenCL/cl.h
+ PATHS
+ ENV "PROGRAMFILES(X86)"
+ ENV AMDAPPSDKROOT
+ ENV INTELOCLSDKROOT
+ ENV NVSDKCOMPUTE_ROOT
+ ENV CUDA_PATH
+ ENV ATISTREAMSDKROOT
+ PATH_SUFFIXES
+ include
+ OpenCL/common/inc
+ "AMD APP/include")
+
+_FIND_OPENCL_VERSION()
+
+if(WIN32)
+ if(CMAKE_SIZEOF_VOID_P EQUAL 4)
+ find_library(OpenCL_LIBRARY
+ NAMES OpenCL
+ PATHS
+ ENV "PROGRAMFILES(X86)"
+ ENV AMDAPPSDKROOT
+ ENV INTELOCLSDKROOT
+ ENV CUDA_PATH
+ ENV NVSDKCOMPUTE_ROOT
+ ENV ATISTREAMSDKROOT
+ PATH_SUFFIXES
+ "AMD APP/lib/x86"
+ lib/x86
+ lib/Win32
+ OpenCL/common/lib/Win32)
+ elseif(CMAKE_SIZEOF_VOID_P EQUAL 8)
+ find_library(OpenCL_LIBRARY
+ NAMES OpenCL
+ PATHS
+ ENV "PROGRAMFILES(X86)"
+ ENV AMDAPPSDKROOT
+ ENV INTELOCLSDKROOT
+ ENV CUDA_PATH
+ ENV NVSDKCOMPUTE_ROOT
+ ENV ATISTREAMSDKROOT
+ PATH_SUFFIXES
+ "AMD APP/lib/x86_64"
+ lib/x86_64
+ lib/x64
+ OpenCL/common/lib/x64)
+ endif()
+else()
+ find_library(OpenCL_LIBRARY
+ NAMES OpenCL
+ PATHS
+ ENV AMDAPPSDKROOT
+ PATH_SUFFIXES
+ lib/x86_64
+ lib/x64)
+endif()
+
+set(OpenCL_LIBRARIES ${OpenCL_LIBRARY})
+set(OpenCL_INCLUDE_DIRS ${OpenCL_INCLUDE_DIR})
+
+include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
+find_package_handle_standard_args(
+ OpenCL
+ FOUND_VAR OpenCL_FOUND
+ REQUIRED_VARS OpenCL_LIBRARY OpenCL_INCLUDE_DIR
+ VERSION_VAR OpenCL_VERSION_STRING)
+
+mark_as_advanced(
+ OpenCL_INCLUDE_DIR
+ OpenCL_LIBRARY)
+
+if(OpenCL_FOUND AND NOT TARGET OpenCL::OpenCL)
+ if(OpenCL_LIBRARY MATCHES "/([^/]+)\\.framework$")
+ add_library(OpenCL::OpenCL INTERFACE IMPORTED)
+ set_target_properties(OpenCL::OpenCL PROPERTIES
+ INTERFACE_LINK_LIBRARIES "${OpenCL_LIBRARY}")
+ else()
+ add_library(OpenCL::OpenCL UNKNOWN IMPORTED)
+ set_target_properties(OpenCL::OpenCL PROPERTIES
+ IMPORTED_LOCATION "${OpenCL_LIBRARY}")
+ endif()
+ set_target_properties(OpenCL::OpenCL PROPERTIES
+ INTERFACE_INCLUDE_DIRECTORIES "${OpenCL_INCLUDE_DIRS}")
+endif()