FindOpenCL.cmake

# - Find the OpenCL headers and library
#
# Defines the following if found:
#  OPENCL_FOUND        : TRUE if found, FALSE otherwise
#  OPENCL_INCLUDE_DIRS : Include directories for OpenCL
#  OPENCL_LIBRARIES    : The libraries to link against
#
# The user can set the OPENCLROOT environment variable to help finding OpenCL
# if it is installed in a non-standard place.

set(ENV_ATISTREAMSDKROOT $ENV{ATISTREAMSDKROOT})
if(ENV_ATISTREAMSDKROOT)
	set(ENV_OPENCLROOT $ENV{ATISTREAMSDKROOT})
endif(ENV_ATISTREAMSDKROOT)

set(ENV_AMDAPPSDKROOT $ENV{AMDAPPSDKROOT})
if(ENV_AMDAPPSDKROOT)
	set(ENV_OPENCLROOT $ENV{AMDAPPSDKROOT})
endif(ENV_AMDAPPSDKROOT)

set(ENV_INTELOCLSDKROOT $ENV{INTELOCLSDKROOT})
if(ENV_INTELOCLSDKROOT)
	set(ENV_OPENCLROOT $ENV{INTELOCLSDKROOT})
endif(ENV_INTELOCLSDKROOT)

set(ENV_OPENCLROOT2 $ENV{OPENCLROOT})
if(ENV_OPENCLROOT2)
	set(ENV_OPENCLROOT $ENV{OPENCLROOT})
endif(ENV_OPENCLROOT2)

if(ENV_OPENCLROOT)
	find_path(OPENCL_INCLUDE_DIR NAMES CL/cl.h OpenCL/cl.h
			PATHS
			${ENV_OPENCLROOT}/include
			#NO_DEFAULT_PATH  #uncomment this is you wish to surpress the use of default paths for OpenCL
			)

	if (("${CMAKE_SYSTEM_NAME}" MATCHES "Linux") OR (${CMAKE_SYSTEM_NAME} MATCHES "Windows"))
		if(CMAKE_SIZEOF_VOID_P EQUAL 4)
			set(OPENCL_LIB_SEARCH_PATH ${OPENCL_LIB_SEARCH_PATH} ${ENV_OPENCLROOT}/lib/x86)
		else(CMAKE_SIZEOF_VOID_P EQUAL 4)
			set(OPENCL_LIB_SEARCH_PATH ${OPENCL_LIB_SEARCH_PATH} ${ENV_OPENCLROOT}/lib/x86_64)
		endif(CMAKE_SIZEOF_VOID_P EQUAL 4)
	endif(("${CMAKE_SYSTEM_NAME}" MATCHES "Linux") OR (${CMAKE_SYSTEM_NAME} MATCHES "Windows"))

	find_library(OPENCL_LIBRARY NAMES OpenCL
			PATHS
			${OPENCL_LIB_SEARCH_PATH}
			#NO_DEFAULT_PATH  #uncomment this is you wish to surpress the use of default paths for OpenCL
			)
else(ENV_OPENCLROOT)
	find_path(OPENCL_INCLUDE_DIR NAMES CL/cl.h OpenCL/cl.h
			PATHS
			${PROJECT_SOURCE_DIR} #use the CL/ include folder provided with ViennaCL
			)

	find_library(OPENCL_LIBRARY NAMES OpenCL)
endif(ENV_OPENCLROOT)

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(
		OPENCL
		DEFAULT_MSG
		OPENCL_LIBRARY OPENCL_INCLUDE_DIR
		)

if(OPENCL_FOUND)
	set(OpenCL_INCLUDE_DIRS ${OPENCL_INCLUDE_DIR})
	set(OpenCL_LIBRARIES ${OPENCL_LIBRARY})
else(OPENCL_FOUND)
	set(OpenCL_INCLUDE_DIRS)
	set(OpenCL_LIBRARIES)
endif(OPENCL_FOUND)

mark_as_advanced(OpenCL_INCLUDE_DIRS OpenCL_LIBRARIES)