bare skeleton created

This commit is contained in:
Mario Hüttel 2018-04-16 21:02:23 +02:00
commit d59e3d4ee2
4 changed files with 232 additions and 0 deletions

3
.gitignore vendored Normal file
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*.o
build
*.user

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CMakeLists.txt Normal file
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cmake_minimum_required(VERSION 2.8)
set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
project(opencl-test)
find_package(OpenCL REQUIRED)
message(STATUS "OpenCL found: ${OPENCL_FOUND}")
message(STATUS "OpenCL includes: ${OPENCL_INCLUDE_DIRS}")
message(STATUS "OpenCL CXX includes: ${OPENCL_HAS_CPP_BINDINGS}")
message(STATUS "OpenCL libraries: ${OPENCL_LIBRARIES}")
add_executable(${PROJECT_NAME} "main.cpp")
target_link_libraries(${PROJECT_NAME} ${OPENCL_LIBRARIES})
include_directories(${PROJECT_NAME} ${OPENCL_INCLUDE_DIR})

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cmake/FindOpenCL.cmake Normal file
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# Find OpenCL
#
# To set manually the paths, define these environment variables:
# OpenCL_INCPATH - Include path (e.g. OpenCL_INCPATH=/opt/cuda/4.0/cuda/include)
# OpenCL_LIBPATH - Library path (e.h. OpenCL_LIBPATH=/usr/lib64/nvidia)
#
# Once done this will define
# OPENCL_FOUND - system has OpenCL
# OPENCL_INCLUDE_DIRS - the OpenCL include directory
# OPENCL_LIBRARIES - link these to use OpenCL
# OPENCL_HAS_CPP_BINDINGS - system has also cl.hpp
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)
# IF OpenCL_LIBPATH is given use it and don't use default path
IF (DEFINED ENV{OpenCL_LIBPATH})
FIND_LIBRARY(OPENCL_LIBRARIES OpenCL PATHS ENV OpenCL_LIBPATH NO_DEFAULT_PATH)
ELSE ()
FIND_LIBRARY(OPENCL_LIBRARIES OpenCL DOC "OpenCL lib for OSX")
ENDIF ()
# IF OpenCL_INCPATH is given use it and find for CL/cl.h and OpenCL/cl.h do not try to find default paths
IF (DEFINED ENV{OpenCL_INCPATH})
FIND_PATH(OPENCL_INCLUDE_DIRS CL/cl.h OpenCL/cl.h PATHS ENV OpenCL_INCPATH NO_DEFAULT_PATH)
FIND_PATH(_OPENCL_CPP_INCLUDE_DIRS CL/cl.hpp OpenCL/cl.hpp PATHS ${OPENCL_INCLUDE_DIRS} NO_DEFAULT_PATH)
ELSE ()
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")
ENDIF ()
ELSE (APPLE)
IF (WIN32)
# Find OpenCL includes and libraries from environment variables provided by vendor
SET(OPENCL_INCLUDE_SEARCH_PATHS)
SET(OPENCL_LIBRARY_SEARCH_PATHS)
SET(OPENCL_LIBRARY_64_SEARCH_PATHS)
# Nvidia
IF (DEFINED ENV{CUDA_INC_PATH})
SET(OPENCL_INCLUDE_SEARCH_PATHS ${OPENCL_INCLUDE_SEARCH_PATHS} $ENV{CUDA_INC_PATH})
SET(OPENCL_LIBRARY_64_SEARCH_PATHS ${OPENCL_LIBRARY_64_SEARCH_PATHS} $ENV{CUDA_LIB_PATH}/../lib64)
SET(OPENCL_LIBRARY_SEARCH_PATHS ${OPENCL_LIBRARY_SEARCH_PATHS} $ENV{CUDA_LIB_PATH}/../lib)
ENDIF()
IF (DEFINED ENV{CUDA_PATH})
SET(OPENCL_INCLUDE_SEARCH_PATHS ${OPENCL_INCLUDE_SEARCH_PATHS} $ENV{CUDA_INC_PATH})
SET(OPENCL_LIBRARY_64_SEARCH_PATHS ${OPENCL_LIBRARY_64_SEARCH_PATHS} $ENV{CUDA_PATH}/lib/x64/)
SET(OPENCL_LIBRARY_SEARCH_PATHS ${OPENCL_LIBRARY_SEARCH_PATHS} $ENV{CUDA_PATH}/lib/Win32/)
ENDIF()
# Intel SDK
IF (DEFINED ENV{INTELOCSDKROOT})
SET(OPENCL_INCLUDE_SEARCH_PATHS ${OPENCL_INCLUDE_SEARCH_PATHS} $ENV{INTELOCSDKROOT}/include)
SET(OPENCL_LIBRARY_64_SEARCH_PATHS ${OPENCL_LIBRARY_64_SEARCH_PATHS} $ENV{INTELOCSDKROOT}/lib/x64)
SET(OPENCL_LIBRARY_SEARCH_PATHS ${OPENCL_LIBRARY_SEARCH_PATHS} $ENV{INTELOCSDKROOT}/lib/x86)
ENDIF()
# AMD SDK
IF (DEFINED ENV{AMDAPPSDKROOT})
SET(OPENCL_INCLUDE_SEARCH_PATHS ${OPENCL_INCLUDE_SEARCH_PATHS} $ENV{AMDAPPSDKROOT}/include)
SET(OPENCL_LIBRARY_64_SEARCH_PATHS ${OPENCL_LIBRARY_64_SEARCH_PATHS} $ENV{AMDAPPSDKROOT}/lib/x86_64)
SET(OPENCL_LIBRARY_SEARCH_PATHS ${OPENCL_LIBRARY_SEARCH_PATHS} $ENV{AMDAPPSDKROOT}/lib/x86)
ENDIF()
# Override search paths with OpenCL_INCPATH env variable
IF (DEFINED ENV{OpenCL_INCPATH})
SET(OPENCL_INCLUDE_SEARCH_PATHS $ENV{OpenCL_INCPATH})
ENDIF ()
# Override search paths with OpenCL_LIBPATH env variable
IF (DEFINED ENV{OpenCL_LIBPATH})
SET(OPENCL_LIBRARY_SEARCH_PATHS $ENV{OpenCL_LIBPATH})
SET(OPENCL_LIBRARY_64_SEARCH_PATHS $ENV{OpenCL_LIBPATH})
ENDIF ()
FIND_PATH(OPENCL_INCLUDE_DIRS CL/cl.h PATHS ${OPENCL_INCLUDE_SEARCH_PATHS})
FIND_PATH(_OPENCL_CPP_INCLUDE_DIRS CL/cl.hpp PATHS ${OPENCL_INCLUDE_SEARCH_PATHS})
FIND_LIBRARY(_OPENCL_32_LIBRARIES OpenCL.lib HINTS ${OPENCL_LIBRARY_SEARCH_PATHS} PATHS ${OPENCL_LIB_DIR} ENV PATH)
FIND_LIBRARY(_OPENCL_64_LIBRARIES OpenCL.lib HINTS ${OPENCL_LIBRARY_64_SEARCH_PATHS} PATHS ${OPENCL_LIB_DIR} ENV PATH)
# Check if 64bit or 32bit versions links fine
SET (_OPENCL_VERSION_SOURCE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/openclversion.c")
#SET (_OPENCL_VERSION_SOURCE "${CMAKE_BINARY_DIR}/test.c")
FILE (WRITE "${_OPENCL_VERSION_SOURCE}"
"
#if __APPLE__
#include <OpenCL/cl.h>
#else /* !__APPLE__ */
#include <CL/cl.h>
#endif /* __APPLE__ */
int main()
{
cl_int result;
cl_platform_id id;
result = clGetPlatformIDs(1, &id, NULL);
return result != CL_SUCCESS;
}
")
TRY_COMPILE(_OPENCL_64_COMPILE_SUCCESS ${CMAKE_BINARY_DIR} "${_OPENCL_VERSION_SOURCE}"
CMAKE_FLAGS
"-DINCLUDE_DIRECTORIES:STRING=${OPENCL_INCLUDE_DIRS}"
CMAKE_FLAGS
"-DLINK_LIBRARIES:STRING=${_OPENCL_64_LIBRARIES}"
)
IF(_OPENCL_64_COMPILE_SUCCESS)
message(STATUS "OpenCL 64bit lib found.")
SET(OPENCL_LIBRARIES ${_OPENCL_64_LIBRARIES})
ELSE()
TRY_COMPILE(_OPENCL_32_COMPILE_SUCCESS ${CMAKE_BINARY_DIR} "${_OPENCL_VERSION_SOURCE}"
CMAKE_FLAGS
"-DINCLUDE_DIRECTORIES:STRING=${OPENCL_INCLUDE_DIRS}"
CMAKE_FLAGS
"-DLINK_LIBRARIES:STRING=${_OPENCL_32_LIBRARIES}"
)
IF(_OPENCL_32_COMPILE_SUCCESS)
message(STATUS "OpenCL 32bit lib found.")
SET(OPENCL_LIBRARIES ${_OPENCL_32_LIBRARIES})
ELSE()
message(STATUS "Couldn't link opencl..")
ENDIF()
ENDIF()
ELSE (WIN32)
IF (CYGWIN)
SET (CMAKE_FIND_LIBRARY_SUFFIXES .lib)
SET (OCL_LIB_SUFFIX .lib)
ENDIF (CYGWIN)
# Unix style platforms
FIND_LIBRARY(OPENCL_LIBRARIES OpenCL${OCL_LIB_SUFFIX}
PATHS ENV LD_LIBRARY_PATH ENV OpenCL_LIBPATH
)
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" "/opt/AMDAPP/include" ENV OpenCL_INCPATH)
FIND_PATH(_OPENCL_CPP_INCLUDE_DIRS CL/cl.hpp PATHS ${_OPENCL_INC_CAND} "/usr/local/cuda/include" "/opt/AMDAPP/include" ENV OpenCL_INCPATH)
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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main.cpp Normal file
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#include <iostream>
#include <vector>
#include <CL/cl.h>
int main()
{
cl_int error;
cl_uint platformIdCount = 0;
clGetPlatformIDs (0, nullptr, &platformIdCount);
std::vector<cl_platform_id> platformIds (platformIdCount);
clGetPlatformIDs (platformIdCount, platformIds.data(), nullptr);
std::cout << "Platform count: " << platformIdCount << std::endl;
cl_uint deviceIdCount = 0;
clGetDeviceIDs (platformIds [0], CL_DEVICE_TYPE_ALL, 0, nullptr,
&deviceIdCount);
std::cout << "Device in Platform 0 count: " << deviceIdCount << std::endl;
std::vector<cl_device_id> deviceIds (deviceIdCount);
clGetDeviceIDs (platformIds [0], CL_DEVICE_TYPE_ALL, deviceIdCount,
deviceIds.data (), nullptr);
const cl_context_properties contextProperties [] =
{
CL_CONTEXT_PLATFORM,
reinterpret_cast<cl_context_properties> (platformIds [0]),
0, 0
};
cl_context context = clCreateContext (
contextProperties, deviceIdCount,
deviceIds.data (), nullptr,
nullptr, &error);
return 0;
}