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FindMIC.cmake
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FindMIC.cmake
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#=============================================================================
# Copyright © 2010-2015 Matthias Kretz <kretz@kde.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the names of contributing organizations nor the
# names of its contributors may be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#=============================================================================
#
# This check will search for a MIC compiler and check whether the C and C++
# compilers are able to offload via offload pragma and target(mic) attribute.
# The project may choose to either build native MIC binaries, or offload
# binaries (hybrid code), or both. In the case where only native MIC binaries
# are built, the compiler does not need to support offloading
#
# MIC_NATIVE_FOUND is true if native MIC binaries can be built
# MIC_OFFLOAD_FOUND is true if hybrid host/MIC binaries via offload can be built
# MIC_FOUND is true if either MIC_NATIVE_FOUND or MIC_OFFLOAD_FOUND is true
#
# When MIC_NATIVE_FOUND is true you can use the macros
# mic_add_definitions
# mic_include_directories
# mic_set_link_libraries
# mic_add_library
# mic_add_executable
# for building native libraries/executables
#
# When MIC_OFFLOAD_FOUND is true you use the standard cmake macros to build
# libraries and executables but have to make sure manually that the necessary
# offload compiler switches are present. You might want to add something like:
# if(MIC_OFFLOAD_FOUND)
# AddCompilerFlag("-offload-build")
# AddCompilerFlag("-offload-copts=-vec-report=3 -H")
# AddCompilerFlag("-offload-ldopts=-lmylib")
# AddCompilerFlag("-opt-report-phase=offload")
# endif()
set(MIC_FOUND false)
set(MIC_NATIVE_FOUND false)
set(MIC_OFFLOAD_FOUND false)
if(CMAKE_GENERATOR MATCHES "Makefile")
option(ENABLE_MIC "Enable native builds for the MIC architecture (Intel Knights Corner)" ON)
else()
message(STATUS "MIC builds are only supported with a Makefile generator")
set(ENABLE_MIC false)
endif()
if(ENABLE_MIC)
file(GLOB _intel_dirs "/opt/intel/compilers_and_libraries_*/linux")
if ("${_intel_dirs}" STREQUAL "")
file(GLOB _intel_dirs "/opt/intel/composer_xe_*")
endif()
list(SORT _intel_dirs)
list(REVERSE _intel_dirs)
find_path(MIC_SDK_DIR bin/intel64_mic/icpc PATHS
"$ENV{MIC_SDK_DIR}"
${_intel_dirs}
)
mark_as_advanced(MIC_SDK_DIR)
##############################################################################
# First check whether offload works
# For now offload is not supported so skip it
# if(NOT DEFINED c_compiler_can_offload OR NOT DEFINED cxx_compiler_can_offload)
# set(c_compiler_can_offload FALSE)
# set(cxx_compiler_can_offload FALSE)
#
# include(CheckCSourceCompiles)
# include(CheckCXXSourceCompiles)
#
# #find_library(MIC_HOST_IMF_LIBRARY imf HINTS ENV LIBRARY_PATH)
# #find_library(MIC_HOST_SVML_LIBRARY svml HINTS ENV LIBRARY_PATH)
# #find_library(MIC_HOST_INTLC_LIBRARY intlc HINTS ENV LIBRARY_PATH)
#
# #set(MIC_HOST_LIBS ${MIC_HOST_IMF_LIBRARY} ${MIC_HOST_SVML_LIBRARY} ${MIC_HOST_INTLC_LIBRARY})
#
# set(_mic_offload_test_source "
##ifdef __MIC__
##include <immintrin.h>
##endif
#__attribute__((target(mic))) void test()
#{
##ifdef __MIC__
# __m512 v = _mm512_setzero_ps();
# (void)v;
##endif
#}
#
#int main()
#{
##pragma offload target(mic)
# test();
# return 0;
#}
#")
# set(CMAKE_REQUIRED_FLAGS "-offload-build")
# check_c_source_compiles("${_mic_offload_test_source}" c_compiler_can_offload)
# check_cxx_source_compiles("${_mic_offload_test_source}" cxx_compiler_can_offload)
# set(CMAKE_REQUIRED_FLAGS)
# endif()
#
# if(c_compiler_can_offload AND cxx_compiler_can_offload)
# message(STATUS "C/C++ Compiler can offload to MIC.")
# set(MIC_OFFLOAD_FOUND true)
# else()
# message(STATUS "C/C++ Compiler can NOT offload to MIC.")
# endif()
##############################################################################
# Next check whether everything required for native builds is available
find_path(MIC_TARGET_TOOLS_DIR bin/x86_64-k1om-linux-ar HINTS
"$ENV{MIC_TARGET_TOOLS_DIR}"
"${MIC_SDK_DIR}/target"
"/usr/linux-k1om-4.7"
)
find_program(MIC_AR x86_64-k1om-linux-ar PATHS "${MIC_TARGET_TOOLS_DIR}/bin")
find_program(MIC_RANLIB x86_64-k1om-linux-ranlib PATHS "${MIC_TARGET_TOOLS_DIR}/bin")
find_program(MIC_OBJCOPY x86_64-k1om-linux-objcopy PATHS "${MIC_TARGET_TOOLS_DIR}/bin")
find_program(MIC_NATIVELOAD micnativeloadex PATHS ENV PATH)
mark_as_advanced(MIC_TARGET_TOOLS_DIR MIC_AR MIC_RANLIB MIC_NATIVELOAD MIC_OBJCOPY)
if(MIC_SDK_DIR AND MIC_AR AND MIC_RANLIB)
find_program(MIC_CC icc HINTS "${MIC_SDK_DIR}/bin" "${MIC_SDK_DIR}/bin/intel64")
find_program(MIC_CXX icpc HINTS "${MIC_SDK_DIR}/bin" "${MIC_SDK_DIR}/bin/intel64")
find_library(MIC_IMF_LIBRARY imf HINTS "${MIC_SDK_DIR}/compiler/lib/mic")
find_library(MIC_SVML_LIBRARY svml HINTS "${MIC_SDK_DIR}/compiler/lib/mic")
find_library(MIC_INTLC_LIBRARY intlc HINTS "${MIC_SDK_DIR}/compiler/lib/mic")
mark_as_advanced(MIC_CC MIC_CXX MIC_IMF_LIBRARY MIC_SVML_LIBRARY MIC_INTLC_LIBRARY)
set(MIC_LIBS ${MIC_IMF_LIBRARY} ${MIC_SVML_LIBRARY} ${MIC_INTLC_LIBRARY})
set(MIC_CFLAGS "-O2 -vec")
exec_program(${MIC_CXX} ARGS -V OUTPUT_VARIABLE _mic_icc_version_string RETURN_VALUE _mic_icc_ok)
if(0 EQUAL _mic_icc_ok)
string(REGEX MATCH "Version (Mainline)?[0-9. a-zA-Z]+" Vc_MIC_ICC_VERSION "${_mic_icc_version_string}")
string(SUBSTRING "${Vc_MIC_ICC_VERSION}" 8 -1 Vc_MIC_ICC_VERSION)
message(STATUS "MIC ICC Version: \"${Vc_MIC_ICC_VERSION}\"")
if(MIC_CC AND MIC_CXX AND MIC_IMF_LIBRARY AND MIC_SVML_LIBRARY AND MIC_INTLC_LIBRARY)
set(MIC_NATIVE_FOUND true)
endif()
else()
message(STATUS "MIC ICC found, but not usable.")
endif()
endif()
endif(ENABLE_MIC)
if(MIC_NATIVE_FOUND OR MIC_OFFLOAD_FOUND)
set(MIC_FOUND true)
list(APPEND CMAKE_MIC_CXX_FLAGS "-fp-model source") # fix IEEE FP comliance
set(Vc_MIC_CXX_FLAGS "")
macro(mic_add_definitions)
add_definitions(${ARGN})
foreach(_def ${ARGN})
set(_mic_cflags ${_mic_cflags} "${_def}")
endforeach()
endmacro()
macro(mic_include_directories)
foreach(_dir ${ARGN})
set(_mic_cflags ${_mic_cflags} "-I${_dir}")
endforeach()
include_directories(${ARGN})
endmacro()
if(NOT DEFINED MIC_C_FLAGS)
set(MIC_C_FLAGS)
endif()
if(NOT DEFINED MIC_CXX_FLAGS)
set(MIC_CXX_FLAGS)
endif()
else()
message(STATUS "MIC SDK was not found!")
endif()
if(MIC_NATIVE_FOUND)
macro(_mic_add_object _target _source _output)
get_property(_deps SOURCE "${_source}" PROPERTY OBJECT_DEPENDS)
get_filename_component(_abs "${_source}" ABSOLUTE)
get_filename_component(_ext "${_source}" EXT)
get_filename_component(_tmp "${_source}" NAME_WE)
set(${_output} "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/${_target}.dir/${_tmp}${_ext}.mic.o")
set(_lang CXX)
set(_compiler "${MIC_CXX}")
if(_ext STREQUAL "c")
set(_lang C)
set(_compiler "${MIC_CC}")
endif()
string(TOUPPER "${CMAKE_BUILD_TYPE}" _tmp)
string(STRIP "${CMAKE_MIC_${_lang}_FLAGS} ${CMAKE_${_lang}_FLAGS_${_tmp}} ${_mic_cflags} ${Vc_MIC_CXX_FLAGS}" _flags)
string(REPLACE " " ";" _flags "${_flags} ${ARGN}")
get_directory_property(_inc INCLUDE_DIRECTORIES)
foreach(_i ${_inc})
list(APPEND _flags "-I${_i}")
endforeach()
get_property(_launch_rule GLOBAL PROPERTY RULE_LAUNCH_COMPILE)
string(REPLACE "\"" "" _launch_rule "${_launch_rule}")
string(REPLACE " " ";" _launch_rule "${_launch_rule}")
string(REPLACE "<TARGET_NAME>" "${_target}" _launch_rule "${_launch_rule}")
string(REPLACE "<CMAKE_CURRENT_BINARY_DIR>" "${CMAKE_CURRENT_BINARY_DIR}" _launch_rule "${_launch_rule}")
string(REPLACE "<OBJECT>" "${${_output}}" _launch_rule "${_launch_rule}")
string(REPLACE "<SOURCE>" "${_abs}" _launch_rule "${_launch_rule}")
string(REPLACE "<LANGUAGE>" "C++" _launch_rule "${_launch_rule}")
add_custom_command(OUTPUT "${${_output}}"
COMMAND ${_launch_rule} "${_compiler}" -mmic
-DVc_IMPL=MIC
${_flags} -c -o "${${_output}}" "${_abs}"
DEPENDS "${_abs}" ${_deps}
IMPLICIT_DEPENDS ${_lang} "${_abs}"
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
COMMENT "Compiling (MIC) ${${_output}}"
VERBATIM
)
endmacro()
macro(mic_set_link_libraries)
set(_mic_lflags)
foreach(_lib ${ARGN})
get_filename_component(_lpath "${_lib}" PATH)
get_filename_component(_lname "${_lib}" NAME)
set(_mic_lflags ${_mic_lflags} "-L${_lpath}" "-l${_lname}")
endforeach()
endmacro()
macro(mic_add_library _target)
set(_state 0)
if(BUILD_SHARED_LIBS)
set(_type SHARED)
else()
set(_type STATIC)
endif()
set(_all ALL)
set(_srcs)
set(_cflags)
set(_libs)
foreach(_arg ${ARGN})
if(_arg MATCHES "^(STATIC|SHARED|MODULE)$")
set(_type ${_arg})
elseif(_arg STREQUAL "EXCLUDE_FROM_ALL")
set(_all)
elseif(_arg STREQUAL "COMPILE_FLAGS" OR _arg STREQUAL "COMPILE_OPTIONS")
set(_state 1)
elseif(_arg STREQUAL "LINK_LIBRARIES")
set(_state 2)
elseif(_arg STREQUAL "SOURCES")
set(_state 0)
elseif(_state EQUAL 0) # SOURCES
set(_srcs ${_srcs} "${_arg}")
elseif(_state EQUAL 1) # COMPILE_FLAGS
list(APPEND _cflags ${_arg})
elseif(_state EQUAL 2) # LINK_LIBRARIES
get_filename_component(_lpath "${_arg}" PATH)
get_filename_component(_lname "${_arg}" NAME)
set(_libs ${_libs} "-L${_lpath}" "-l${_lname}")
endif()
endforeach()
set(_objects)
set(_objectsStr)
foreach(_src ${_srcs})
_mic_add_object("${_target}" "${_src}" _obj ${_cflags})
list(APPEND _objects "${_obj}")
set(_objectsStr "${_objectsStr} \"${_obj}\"")
endforeach()
set(_outdir "${CMAKE_CURRENT_BINARY_DIR}/x86_64-k1om-linux")
file(MAKE_DIRECTORY "${_outdir}")
#TODO: handle STATIC/SHARED/MODULE differently
set(_output "lib${_target}.a")
set(_linkscript "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/${_target}.dir/link.txt")
set(_cleanscript "CMakeFiles/${_target}.dir/cmake_clean_target.cmake")
file(WRITE "${_linkscript}"
"${MIC_AR} cr ${_output} ${_objectsStr}
${MIC_RANLIB} ${_output}
")
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/${_cleanscript}"
"FILE(REMOVE_RECURSE \"${_output}\")
")
add_custom_command(OUTPUT "${_outdir}/${_output}"
COMMAND "${CMAKE_COMMAND}" -E cmake_link_script "${_linkscript}" --verbose=$(VERBOSE)
DEPENDS ${_objects}
WORKING_DIRECTORY "${_outdir}"
COMMENT "Linking (MIC) ${_output}"
VERBATIM
)
add_custom_target("${_target}" ${_all}
DEPENDS "${_outdir}/${_output}"
COMMENT ""
SOURCES ${_srcs}
)
set_target_properties("${_target}" PROPERTIES
OUTPUT_NAME "${_outdir}/${_output}"
)
endmacro()
macro(mic_add_executable _target)
set(_state 0)
set(_all ALL)
set(_srcs)
set(_cflags)
set(_libs)
set(_libTargets)
set(_dump_asm false)
set(_exec_output_name "${_target}")
set(_objects)
set(_objectsStr)
foreach(_arg ${ARGN})
if(_arg STREQUAL "EXCLUDE_FROM_ALL")
set(_all)
elseif(_arg STREQUAL "COMPILE_FLAGS")
set(_state 1)
elseif(_arg STREQUAL "LINK_LIBRARIES")
set(_state 2)
elseif(_arg STREQUAL "OUTPUT_NAME")
set(_state 3)
elseif(_arg STREQUAL "SOURCES")
set(_state 0)
elseif(_arg STREQUAL "OBJECTS")
set(_state 4)
elseif(_arg STREQUAL "DUMP_ASM")
set(_dump_asm true)
elseif(_state EQUAL 0) # SOURCES
set(_srcs ${_srcs} "${_arg}")
elseif(_state EQUAL 1) # COMPILE_FLAGS
set(_cflags ${_cflags} "${_arg}")
elseif(_state EQUAL 2) # LINK_LIBRARIES
if(TARGET ${_arg})
get_target_property(_tmp "${_arg}" OUTPUT_NAME)
if(_tmp)
set(_libs ${_libs} "${_tmp}")
set(_libTargets ${_libTargets} "${_tmp}" "${_arg}")
else()
set(_libs ${_libs} "${_arg}")
if(EXISTS "${_arg}")
set(_libTargets ${_libTargets} "${_arg}")
endif()
endif()
else()
set(_libs ${_libs} "${_arg}")
if(EXISTS "${_arg}")
set(_libTargets ${_libTargets} "${_arg}")
endif()
endif()
elseif(_state EQUAL 3) # OUTPUT_NAME
set(_exec_output_name "${_arg}")
elseif(_state EQUAL 4) # OBJECTS
set(_objects ${_objects} "${_arg}")
set(_objectsStr "${_objectsStr} \"${_arg}\"")
endif()
endforeach()
foreach(_src ${_srcs})
_mic_add_object("${_target}" "${_src}" _obj ${_cflags})
set(_objects ${_objects} "${_obj}")
set(_objectsStr "${_objectsStr} \"${_obj}\"")
endforeach()
set(_exec_output "${CMAKE_CURRENT_BINARY_DIR}/${_exec_output_name}")
get_property(_launch_rule GLOBAL PROPERTY RULE_LAUNCH_LINK)
string(REPLACE "\"" "" _launch_rule "${_launch_rule}")
string(REPLACE " " ";" _launch_rule "${_launch_rule}")
string(REPLACE "<TARGET_NAME>" "${_target}" _launch_rule "${_launch_rule}")
string(REPLACE "<CMAKE_CURRENT_BINARY_DIR>" "${CMAKE_CURRENT_BINARY_DIR}" _launch_rule "${_launch_rule}")
add_custom_command(OUTPUT "${_exec_output}"
COMMAND ${_launch_rule} "${MIC_CXX}" -mmic
"-L${MIC_SDK_DIR}/compiler/lib/mic/"
${_mic_lflags} ${_objects} -o "${_exec_output}"
${_libs}
DEPENDS ${_objects} ${_libTargets}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
COMMENT "Linking (MIC) ${_exec_output}"
VERBATIM
)
set(_dump_asm_output)
if(_dump_asm)
foreach(_src ${_srcs})
get_filename_component(_abs "${_src}" ABSOLUTE)
get_filename_component(_name "${_src}" NAME)
add_custom_command(OUTPUT "${_name}.s"
COMMAND "${MIC_CXX}" -mmic
-DVc_IMPL=MIC ${_mic_cflags} ${_cflags} ${Vc_MIC_CXX_FLAGS}
${_abs}
-S -fsource-asm -fno-verbose-asm -o "${_name}.x"
COMMAND sh -c "grep -v ___tag_value '${_name}.x' | c++filt > '${_name}.s'"
COMMAND rm "${_name}.x"
DEPENDS ${_abs}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
COMMENT "Creating MIC Assembly ${_name}.s"
VERBATIM
)
set(_dump_asm_output ${_dump_asm_output} "${CMAKE_CURRENT_BINARY_DIR}/${_name}.s")
endforeach()
endif()
add_custom_target("${_target}" ${_all}
DEPENDS "${_exec_output}" ${_dump_asm_output}
COMMENT ""
SOURCES ${_srcs}
)
set_target_properties("${_target}" PROPERTIES OUTPUT_NAME "${_exec_output_name}")
endmacro()
endif()
if(MIC_OFFLOAD_FOUND)
macro(mic_offload _target)
set(_mic_debug)
if(CMAKE_BUILD_TYPE STREQUAL "Debug" OR CMAKE_BUILD_TYPE STREQUAL "RelWithDebInfo")
set(_mic_debug "-g")
endif()
add_target_property(${_target} COMPILE_FLAGS "-offload-build -DCAN_OFFLOAD ${_mic_debug}")
set(_offload_ldflags "${_mic_debug}")
set(_libTargets)
foreach(_lib ${ARGN})
get_target_property(_tmp "${_lib}" OUTPUT_NAME)
if(_tmp)
set(_offload_ldflags "${_offload_ldflags} ${_tmp}")
set(_libTargets ${_libTargets} "${_arg}")
else()
get_filename_component(_lpath "${_arg}" PATH)
get_filename_component(_lname "${_arg}" NAME)
set(_offload_ldflags "${_offload_ldflags} -L${_lpath} -l${_lname}")
endif()
endforeach()
add_target_property(${_target} LINK_FLAGS "-offload-build -offload-ldopts=\"${_offload_ldflags}\" ${_mic_debug}")
if(_libTargets)
add_dependencies(${_target} ${_libTargets})
endif()
endmacro()
endif()