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FindOpenCL.cmake
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FindOpenCL.cmake
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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
#######################################################
# Enhanced version of find OpenCL.
#
# Usage:
# find_opencl(${USE_OPENCL})
#
# - When USE_OPENCL=ON, use OpenCL wrapper for dynamic linking
# - When USE_OPENCL=/path/to/opencl-sdk-path, use the sdk.
# Can be useful when cross compiling and cannot rely on
# CMake to provide the correct library as part of the
# requested toolchain.
#
# Provide variables:
#
# - OpenCL_FOUND
# - OpenCL_INCLUDE_DIRS
# - OpenCL_LIBRARIES
#
macro(find_opencl use_opencl)
set(__use_opencl ${use_opencl})
if(IS_DIRECTORY ${__use_opencl})
set(__opencl_sdk ${__use_opencl})
message(STATUS "Custom OpenCL SDK PATH=" ${__use_opencl})
elseif(IS_DIRECTORY $ENV{OPENCL_SDK})
set(__opencl_sdk $ENV{OPENCL_SDK})
else()
set(__opencl_sdk "")
endif()
if(__opencl_sdk)
set(OpenCL_INCLUDE_DIRS ${__opencl_sdk}/include)
if (CMAKE_FIND_ROOT_PATH_MODE_LIBRARY STREQUAL "ONLY")
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY BOTH)
endif()
# we are in the section dedicated to the explicit pointing of OpenCL SDK path, we must not
# look for the OpenCL library by default path, but should be limited by provided SDK
find_library(OpenCL_LIBRARIES NAMES OpenCL NO_DEFAULT_PATH PATHS ${__opencl_sdk}/lib ${__opencl_sdk}/lib64 ${__opencl_sdk}/lib/x64/)
if(OpenCL_LIBRARIES)
set(OpenCL_FOUND TRUE)
endif()
endif(__opencl_sdk)
# No user provided OpenCL include/libs found
if(NOT OpenCL_FOUND)
if(${__use_opencl} MATCHES ${IS_TRUE_PATTERN})
find_package(OpenCL QUIET)
endif()
endif()
if(OpenCL_FOUND)
message(STATUS "OpenCL_INCLUDE_DIRS=" ${OpenCL_INCLUDE_DIRS})
message(STATUS "OpenCL_LIBRARIES=" ${OpenCL_LIBRARIES})
endif(OpenCL_FOUND)
endmacro(find_opencl)