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#
# This file taken from FindOpenCL project @ http://gitorious.com/findopencl
#
# - Try to find OpenCL
# This module tries to find an OpenCL implementation on your system. It supports
# AMD / ATI, Apple and NVIDIA implementations, but shoudl 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)
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 (APPLE)
IF (WIN32)
FIND_PATH(OPENCL_INCLUDE_DIRS CL/cl.h)
FIND_PATH(_OPENCL_CPP_INCLUDE_DIRS CL/cl.hpp)
# The AMD SDK currently installs both x86 and x86_64 libraries
# This is only a hack to find out architecture
IF( ${CMAKE_SYSTEM_PROCESSOR} STREQUAL "AMD64" )
SET(OPENCL_LIB_DIR "$ENV{ATISTREAMSDKROOT}/lib/x86_64")
SET(OPENCL_LIB_DIR "$ENV{ATIINTERNALSTREAMSDKROOT}/lib/x86_64")
ELSE (${CMAKE_SYSTEM_PROCESSOR} STREQUAL "AMD64")
SET(OPENCL_LIB_DIR "$ENV{ATISTREAMSDKROOT}/lib/x86")
SET(OPENCL_LIB_DIR "$ENV{ATIINTERNALSTREAMSDKROOT}/lib/x86")
ENDIF( ${CMAKE_SYSTEM_PROCESSOR} STREQUAL "AMD64" )
# find out if the user asked for a 64-bit build, and use the corresponding
# 64 or 32 bit NVIDIA library paths to the search:
STRING(REGEX MATCH "Win64" ISWIN64 ${CMAKE_GENERATOR})
IF("${ISWIN64}" STREQUAL "Win64")
FIND_LIBRARY(OPENCL_LIBRARIES OpenCL.lib ${OPENCL_LIB_DIR} $ENV{CUDA_LIB_PATH} $ENV{CUDA_PATH}/lib/x64)
ELSE("${ISWIN64}" STREQUAL "Win64")
FIND_LIBRARY(OPENCL_LIBRARIES OpenCL.lib ${OPENCL_LIB_DIR} $ENV{CUDA_LIB_PATH} $ENV{CUDA_PATH}/lib/Win32)
ENDIF("${ISWIN64}" STREQUAL "Win64")
GET_FILENAME_COMPONENT(_OPENCL_INC_CAND ${OPENCL_LIB_DIR}/../../include ABSOLUTE)
# On Win32 search relative to the library
FIND_PATH(OPENCL_INCLUDE_DIRS CL/cl.h PATHS "${_OPENCL_INC_CAND}" $ENV{CUDA_INC_PATH} $ENV{CUDA_PATH}/include)
FIND_PATH(_OPENCL_CPP_INCLUDE_DIRS CL/cl.hpp PATHS "${_OPENCL_INC_CAND}" $ENV{CUDA_INC_PATH} $ENV{CUDA_PATH}/include)
ELSE (WIN32)
# Unix style platforms
FIND_LIBRARY(OPENCL_LIBRARIES OpenCL
ENV LD_LIBRARY_PATH
)
GET_FILENAME_COMPONENT(OPENCL_LIB_DIR ${OPENCL_LIBRARIES} PATH)
GET_FILENAME_COMPONENT(_OPENCL_INC_CAND ${OPENCL_LIB_DIR}/../../include ABSOLUTE)
# 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} "/usr/local/cuda/include")
ENDIF (WIN32)
ENDIF (APPLE)
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( _OPENCL_CPP_INCLUDE_DIRS )
MARK_AS_ADVANCED(
OPENCL_INCLUDE_DIRS
)
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