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#
# \note This file is a copy of the ITK 4.2.0 CMake\itkOpenCL.cmake
# We added support for .clh file(OpenCL header kernels)
# It was modified by Denis P. Shamonin and Marius Staring.
# Division of Image Processing,
# Department of Radiology, Leiden, The Netherlands.
# Added functionality is described in the Insight Journal paper:
# http://hdl.handle.net/10380/3393
#
#-----------------------------------------------------------------------------
# OpenCL interface macros.
# opencl_source_file_to_string(<module>)
#
macro(opencl_source_file_to_string _source_file _result_cmake_var)
file(STRINGS ${_source_file} FileStrings)
foreach(SourceLine ${FileStrings})
# replace all \ with \\ to make the c string constant work
string(REGEX REPLACE "\\\\" "\\\\\\\\" TempSourceLine "${SourceLine}")
# replace all " with \" to make the c string constant work
string(REGEX REPLACE "\"" "\\\\\"" EscapedSourceLine "${TempSourceLine}")
set(${_result_cmake_var} "${${_result_cmake_var}}\n\"${EscapedSourceLine}\\n\"")
endforeach()
endmacro()
#-----------------------------------------------------------------------------
# OpenCL interface macros.
# write_opencl_kernel_to_file(<module>)
#
macro(write_opencl_kernel_to_file _opencl_file _src_var _group_name)
#message(STATUS "write_opencl_kernel_to_file macro variables")
#message(STATUS "VAR _opencl_file: ${_opencl_file}")
#message(STATUS "VAR _src_var: ${_src_var}")
#message(STATUS "VAR _group_name: ${_group_name}")
# get file name and extension
get_filename_component(OpenCLFileName ${_opencl_file} NAME_WE)
get_filename_component(OpenCLFileExtension ${_opencl_file} EXT)
# define kernel class, output filename for generated file and opencl file copy
set(kernel_cxx_include "itk${OpenCLFileName}.h")
set(kernel_cxx_class_name)
set(output_file_generated)
set(opencl_file_copy)
if(${OpenCLFileExtension} STREQUAL ".clh")
set(kernel_cxx_class_name ${OpenCLFileName}HeaderKernel)
set(output_file_generated "${OpenCLFileName}HeaderKernel.cxx")
set(opencl_file_copy "${output_file_generated}.clh")
elseif(${OpenCLFileExtension} STREQUAL ".cl")
set(kernel_cxx_class_name ${OpenCLFileName}Kernel)
set(output_file_generated "${OpenCLFileName}Kernel.cxx")
set(opencl_file_copy "${output_file_generated}.cl")
endif()
#message(STATUS "kernel_cxx_include : ${kernel_cxx_include}")
#message(STATUS "kernel_cxx_class_name: ${kernel_cxx_class_name}")
#message(STATUS "output_file_generated: ${output_file_generated}")
#message(STATUS "opencl_file_copy : ${opencl_file_copy}")
# convert file to string
opencl_source_file_to_string(${_opencl_file} ${kernel_cxx_class_name}_SourceString)
# add include on top
set(${kernel_cxx_class_name}_KernelString
"#include \"${kernel_cxx_include}\"\n\n")
# add namespace itk
set(${kernel_cxx_class_name}_KernelString
"${${kernel_cxx_class_name}_KernelString}namespace itk\n")
# add const char* ${_kernel_cxx_class_name}::GetOpenCLSource() here
set(${kernel_cxx_class_name}_KernelString
"${${kernel_cxx_class_name}_KernelString}{\n\n")
set(${kernel_cxx_class_name}_KernelString
"${${kernel_cxx_class_name}_KernelString}const char* ${kernel_cxx_class_name}::GetOpenCLSource()\n")
set(${kernel_cxx_class_name}_KernelString
"${${kernel_cxx_class_name}_KernelString}{\n")
# add converted string
set(${kernel_cxx_class_name}_KernelString
"${${kernel_cxx_class_name}_KernelString} return ${${kernel_cxx_class_name}_SourceString};\n")
set(${kernel_cxx_class_name}_KernelString
"${${kernel_cxx_class_name}_KernelString}}\n\n")
# add closing bracket to namespace itk
set(${kernel_cxx_class_name}_KernelString
"${${kernel_cxx_class_name}_KernelString}} // namespace itk\n")
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/${output_file_generated}
"${${kernel_cxx_class_name}_KernelString}")
configure_file(${_opencl_file} ${CMAKE_CURRENT_BINARY_DIR}/${opencl_file_copy} COPYONLY)
add_custom_target(${kernel_cxx_class_name}_Target
DEPENDS
${CMAKE_CURRENT_BINARY_DIR}/${output_file_generated}
${CMAKE_CURRENT_SOURCE_DIR}/CMakeLists.txt
${CMAKE_CURRENT_BINARY_DIR}/${opencl_file_copy}
)
set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/${output_file_generated} PROPERTIES GENERATED ON)
set(${_src_var} ${${_src_var}} ${output_file_generated})
set_property(TARGET ${kernel_cxx_class_name}_Target PROPERTY FOLDER ${_group_name})
endmacro()
#-----------------------------------------------------------------------------
# OpenCL interface macros.
# write_opencl_kernels_to_file(<module>)
#
macro(write_opencl_kernels_to_file _opencl_files _merge_to _src_var _group_name)
#message(STATUS "write_opencl_kernels_to_file macro variables")
#message(STATUS "VAR _opencl_files: ${_opencl_files}")
#message(STATUS "VAR _merge_to: ${_merge_to}")
#message(STATUS "VAR _src_var: ${_src_var}")
#message(STATUS "VAR _group_name: ${_group_name}")
set(kernel_cxx_class_name ${_merge_to}Kernel)
#message(STATUS "kernel_cxx_class_name: ${kernel_cxx_class_name}")
set(output_file_generated "${kernel_cxx_class_name}.cxx")
# add include on top
set(${kernel_cxx_class_name}_KernelString
"#include \"itk${_merge_to}.h\"\n\n")
# add namespace itk
set(${kernel_cxx_class_name}_KernelString
"${${kernel_cxx_class_name}_KernelString}namespace itk\n{\n")
foreach(opencl_file ${_opencl_files})
# get file name and extension
get_filename_component(OpenCLFileName ${opencl_file} NAME_WE)
get_filename_component(OpenCLFileExtension ${opencl_file} EXT)
# get the file name
get_filename_component(OpenCLFileName ${opencl_file} NAME_WE)
# convert file to string
opencl_source_file_to_string(${opencl_file} ${OpenCLFileName}_SourceString)
# add const char* ${kernel_cxx_class_name}::GetOpenCLSource() here
set(${OpenCLFileName}_KernelString
"${${OpenCLFileName}_KernelString}const char* ${OpenCLFileName}Kernel::GetOpenCLSource()\n")
set(${OpenCLFileName}_KernelString
"${${OpenCLFileName}_KernelString}{\n")
# add converted string
set(${OpenCLFileName}_KernelString
"${${OpenCLFileName}_KernelString} return ${${OpenCLFileName}_SourceString};\n")
set(${OpenCLFileName}_KernelString
"${${OpenCLFileName}_KernelString}}\n\n")
# append to ${kernel_cxx_class_name}_KernelString
set(${kernel_cxx_class_name}_KernelString
"${${kernel_cxx_class_name}_KernelString} ${${OpenCLFileName}_KernelString}")
endforeach()
# add closing bracket to namespace itk
set(${kernel_cxx_class_name}_KernelString
"${${kernel_cxx_class_name}_KernelString}} // namespace itk\n")
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/${output_file_generated}
"${${kernel_cxx_class_name}_KernelString}")
# make sure that if we modify original OpenCL file from ${_opencl_files}, then kernel string has to be recreated
set(opencl_depend_files "")
list(APPEND opencl_depend_files "${CMAKE_CURRENT_BINARY_DIR}/${output_file_generated}")
list(APPEND opencl_depend_files "${CMAKE_CURRENT_SOURCE_DIR}/CMakeLists.txt")
foreach(opencl_file ${_opencl_files})
get_filename_component(OpenCLFileName ${opencl_file} NAME_WE)
get_filename_component(OpenCLFileExtension ${opencl_file} EXT)
set(opencl_file_copy)
if(${OpenCLFileExtension} STREQUAL ".clh")
set(opencl_file_copy "${OpenCLFileName}HeaderKernel.cxx.clh")
elseif(${OpenCLFileExtension} STREQUAL ".cl")
set(opencl_file_copy "${OpenCLFileName}Kernel.cxx.cl")
endif()
configure_file(${opencl_file} ${CMAKE_CURRENT_BINARY_DIR}/${opencl_file_copy} COPYONLY)
list(APPEND opencl_depend_files "${CMAKE_CURRENT_BINARY_DIR}/${opencl_file_copy}")
endforeach()
#message(STATUS "VAR opencl_depend_files: ${opencl_depend_files}")
add_custom_target(${kernel_cxx_class_name}_Target
DEPENDS
${opencl_depend_files}
)
set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/${output_file_generated} PROPERTIES GENERATED ON)
set(${_src_var} ${${_src_var}} ${output_file_generated})
set_property(TARGET ${kernel_cxx_class_name}_Target PROPERTY FOLDER ${_group_name})
endmacro()
#-----------------------------------------------------------------------------
# OpenCL interface macros.
# write_opencl_kernels(<module>)
#
macro(write_opencl_kernels _opencl_kernels _opencl_src _group_name _merge_kernels_to_one_file)
#message(STATUS "write_opencl_kernels macro variables")
#message(STATUS "VAR _opencl_kernels: ${_opencl_kernels}")
#message(STATUS "VAR _opencl_src: ${_opencl_src}")
#message(STATUS "VAR _group_name: ${_group_name}")
#message(STATUS "VAR _merge_kernels_to_one_file: ${_merge_kernels_to_one_file}")
if(NOT ${_merge_kernels_to_one_file})
foreach(opencl_kernel ${_opencl_kernels})
write_opencl_kernel_to_file(${opencl_kernel} ${_opencl_src} ${_group_name})
endforeach()
else()
set(merge_to ${ARGV4})
write_opencl_kernels_to_file("${_opencl_kernels}" ${merge_to} ${_opencl_src} ${_group_name})
endif()
endmacro()
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