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# - Try to find OpenCL
# This module tries to find an OpenCL implementation on your system. It supports
# AMD / ATI, Apple and NVIDIA implementations, but should work, too.
#
# Once done this will define
# OPENCL_FOUND - system has OpenCL
# OPENCL_INCLUDE_DIRS - the OpenCL include directory
# OPENCL_LIBRARIES - link these to use OpenCL
#
# WIN32 should work, but is untested
find_package( PackageHandleStandardArgs )
set (OPENCL_VERSION_STRING "0.1.0")
set (OPENCL_VERSION_MAJOR 0)
set (OPENCL_VERSION_MINOR 1)
set (OPENCL_VERSION_PATCH 0)
set(OPENCL_ROOT_DIR
"${OPENCL_ROOT_DIR}"
CACHE
PATH
"Path to search for opencl")
if (APPLE)
find_library(OPENCL_LIBRARIES OpenCL DOC "OpenCL lib for OSX")
find_path(OPENCL_INCLUDE_DIRS OpenCL/cl.h DOC "Include for OpenCL on OSX")
find_path(_OPENCL_CPP_INCLUDE_DIRS OpenCL/cl.hpp DOC "Include for OpenCL CPP bindings on OSX")
else ()
if (WIN32)
find_path(OPENCL_INCLUDE_DIRS CL/cl.h )
find_path(_OPENCL_CPP_INCLUDE_DIRS CL/cl.hpp )
if( ${OPENCL_INCLUDE_DIRS} STREQUAL "OPENCL_INCLUDE_DIRS-NOTFOUND" )
set( SEARCH_PATH ${OPENCL_ROOT_DIR}/inc ${OPENCL_ROOT_DIR}/common/inc ${PATH} "C:/ProgramData/NVIDIA Corporation/NVIDIA GPU Computing SDK/OpenCL/common/inc" "$ENV{ATISTREAMSDKROOT}/include" "C:/Program Files (x86)/AMD APP/include")
find_path(OPENCL_INCLUDE_DIRS CL/cl.h PATHS ${SEARCH_PATH} )
find_path(_OPENCL_CPP_INCLUDE_DIRS CL/cl.hpp PATHS ${SEARCH_PATH} )
endif()
set(_OPENCL_BASE ${OPENCL_INCLUDE_DIRS}/..)
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
set(OPENCL_LIB_DIR ${_OPENCL_BASE}/lib/x64 ${_OPENCL_BASE}/lib/x86_64)
else()
set(OPENCL_LIB_DIR ${_OPENCL_BASE}/lib/Win32 ${_OPENCL_BASE}/lib/x86)
endif()
find_library(OPENCL_LIBRARIES OpenCL.lib PATHS ${OPENCL_LIB_DIR})
get_filename_component(_OPENCL_INC_CAND_PRE ${OPENCL_LIBRARIES} PATH)
set(_OPENCL_INC_CAND ${_OPENCL_INC_CAND_PRE}/../../include)
# On Win32 search relative to the library
find_path(OPENCL_INCLUDE_DIRS CL/cl.h PATHS "${_OPENCL_INC_CAND}")
find_path(_OPENCL_CPP_INCLUDE_DIRS CL/cl.hpp PATHS "${_OPENCL_INC_CAND}")
else ()
# Unix style platforms
find_library(OPENCL_LIBRARIES OpenCL
PATHS ${OPENCL_ROOT_DIR}/lib ${OPENCL_ROOT_DIR}/common/lib
ENV LD_LIBRARY_PATH
)
get_filename_component(OPENCL_LIB_DIR ${OPENCL_LIBRARIES} PATH)
get_filename_component(_OPENCL_INC_CAND ${OPENCL_LIB_DIR}/../../include ABSOLUTE)
set(_OPENCL_INC_CAND
${_OPENCL_INC_CAND}
${OPENCL_ROOT_DIR}/include
${OPENCL_ROOT_DIR}/inc
${OPENCL_ROOT_DIR}/common/inc
)
# The AMD SDK currently does not place its headers
# in /usr/include, therefore also search relative
# to the library
find_path(OPENCL_INCLUDE_DIRS CL/cl.h PATHS ${_OPENCL_INC_CAND} /usr/local/cuda/include/)
find_path(_OPENCL_CPP_INCLUDE_DIRS CL/cl.hpp PATHS ${_OPENCL_INC_CAND})
endif ()
endif ()
FIND_PACKAGE_HANDLE_STANDARD_ARGS( OpenCL DEFAULT_MSG OPENCL_LIBRARIES OPENCL_INCLUDE_DIRS )
if( _OPENCL_CPP_INCLUDE_DIRS )
set( OPENCL_HAS_CPP_BINDINGS TRUE )
list( APPEND OPENCL_INCLUDE_DIRS ${_OPENCL_CPP_INCLUDE_DIRS} )
# This is often the same, so clean up
list( REMOVE_DUPLICATES OPENCL_INCLUDE_DIRS )
endif()
mark_as_advanced(
OPENCL_INCLUDE_DIRS
)
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