FindOpenCL.cmake

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#   © 2012,2014 Advanced Micro Devices, Inc. All rights reserved.                                     
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#   you may not use this file except in compliance with the License.                 
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#       http://www.apache.org/licenses/LICENSE-2.0                      
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#   distributed under the License is distributed on an "AS IS" BASIS,              
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#   limitations under the License.                                                   

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##	Copyright (C) 2010 Advanced Micro Devices, Inc. All Rights Reserved.
#############################################################################

# Locate an OpenCL implementation.
# Currently supports AMD APP SDK (http://developer.amd.com/sdks/AMDAPPSDK/Pages/default.aspx/)
#
# Defines the following variables:
#
#   OPENCL_FOUND - Found the OPENCL framework
#   OPENCL_INCLUDE_DIRS - Include directories
#
# Also defines the library variables below as normal
# variables.  These contain debug/optimized keywords when
# a debugging library is found.
#
#   OPENCL_LIBRARIES - libopencl
#
# Accepts the following variables as input:
#
#   OPENCL_ROOT - (as a CMake or environment variable)
#                The root directory of the OpenCL implementation found
#
#   FIND_LIBRARY_USE_LIB64_PATHS - Global property that controls whether findOpenCL should search for 
#                              64bit or 32bit libs
#-----------------------
# Example Usage:
#
#    find_package(OPENCL REQUIRED)
#    include_directories(${OPENCL_INCLUDE_DIRS})
#
#    add_executable(foo foo.cc)
#    target_link_libraries(foo ${OPENCL_LIBRARIES})
#
#-----------------------

find_path( OPENCL_INCLUDE_DIRS 
	NAMES OpenCL/cl.h CL/cl.h
    HINTS
		${OPENCL_ROOT}/include
		$ENV{OPENCL_ROOT}/include
		$ENV{AMDAPPSDKROOT}/include
	PATHS
		/usr/include 
		/usr/local/include
	DOC "OpenCL header file path"
)
mark_as_advanced( OPENCL_INCLUDE_DIRS )

# Search for 64bit libs if FIND_LIBRARY_USE_LIB64_PATHS is set to true in the global environment, 32bit libs else
get_property( LIB64 GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS )

if( LIB64 )
	find_library( OPENCL_LIBRARIES
		NAMES OpenCL
		HINTS
			${OPENCL_ROOT}/lib
			$ENV{OPENCL_ROOT}/lib
			$ENV{AMDAPPSDKROOT}/lib
		DOC "OpenCL dynamic library path"
		PATH_SUFFIXES x86_64 x64
	)
else( )
	find_library( OPENCL_LIBRARIES
		NAMES OpenCL
		HINTS
			${OPENCL_ROOT}/lib
			$ENV{OPENCL_ROOT}/lib
			$ENV{AMDAPPSDKROOT}/lib
		DOC "OpenCL dynamic library path"
		PATH_SUFFIXES x86
	)
endif( )
mark_as_advanced( OPENCL_LIBRARIES )

include( FindPackageHandleStandardArgs )
FIND_PACKAGE_HANDLE_STANDARD_ARGS( OPENCL DEFAULT_MSG OPENCL_LIBRARIES OPENCL_INCLUDE_DIRS )

if( NOT OPENCL_FOUND )
	message( STATUS "FindOpenCL looked for libraries named: OpenCL" )
endif()