FBGEMM/cmake/modules/FindMKL.cmake

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CMake

# - Find INTEL MKL library
# This module finds the Intel Mkl libraries.
# Note: This file is a modified version of pytorch/cmake/Modules/FindMKL.cmake
#
# This module sets the following variables:
# MKL_FOUND - set to true if a library implementing the CBLAS interface is found
# MKL_VERSION - best guess
# MKL_INCLUDE_DIR - path to include dir.
# MKL_LIBRARIES - list of libraries for base mkl
# Do nothing if MKL_FOUND was set before!
IF (NOT MKL_FOUND)
SET(MKL_VERSION)
SET(MKL_INCLUDE_DIR)
SET(MKL_LIBRARIES)
# Includes
INCLUDE(CheckTypeSize)
INCLUDE(CheckFunctionExists)
# Intel Compiler Suite
SET(INTEL_COMPILER_DIR "/opt/intel" CACHE STRING
"Root directory of the Intel Compiler Suite (contains ipp, mkl, etc.)")
SET(INTEL_MKL_DIR "/opt/intel/mkl" CACHE STRING
"Root directory of the Intel MKL (standalone)")
SET(INTEL_MKL_SEQUENTIAL OFF CACHE BOOL
"Force using the sequential (non threaded) libraries")
# Checks
CHECK_TYPE_SIZE("void*" SIZE_OF_VOIDP)
IF ("${SIZE_OF_VOIDP}" EQUAL 8)
SET(mklvers "intel64")
SET(iccvers "intel64")
SET(mkl64s "_lp64")
ELSE ("${SIZE_OF_VOIDP}" EQUAL 8)
SET(mklvers "32")
SET(iccvers "ia32")
SET(mkl64s)
ENDIF ("${SIZE_OF_VOIDP}" EQUAL 8)
IF(CMAKE_COMPILER_IS_GNUCC)
SET(mklthreads "mkl_gnu_thread" "mkl_intel_thread")
SET(mklifaces "intel" "gf")
SET(mklrtls "gomp" "iomp5")
ELSE(CMAKE_COMPILER_IS_GNUCC)
SET(mklthreads "mkl_intel_thread")
SET(mklifaces "intel")
SET(mklrtls "iomp5" "guide")
IF (MSVC)
SET(mklrtls "libiomp5mt")
ENDIF (MSVC)
ENDIF (CMAKE_COMPILER_IS_GNUCC)
# Kernel libraries dynamically loaded
SET(mklseq)
# Paths
SET(saved_CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH})
SET(saved_CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH})
IF(WIN32)
# Set default MKLRoot for Windows
IF($ENV{MKLProductDir})
SET(INTEL_COMPILER_DIR $ENV{MKLProductDir})
ELSE()
SET(INTEL_COMPILER_DIR
"C:/Program Files (x86)/IntelSWTools/compilers_and_libraries/windows")
ENDIF()
# Change mklvers and iccvers when we are using MSVC instead of ICC
IF(MSVC AND NOT CMAKE_CXX_COMPILER_ID STREQUAL "Intel")
SET(mklvers "${mklvers}_win")
SET(iccvers "${iccvers}_win")
ENDIF()
ENDIF(WIN32)
IF (EXISTS ${INTEL_COMPILER_DIR})
# TODO: diagnostic if dir does not exist
SET(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH}
"${INTEL_COMPILER_DIR}/lib/${iccvers}")
IF(MSVC)
SET(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH}
"${INTEL_COMPILER_DIR}/compiler/lib/${iccvers}")
ENDIF()
IF (NOT EXISTS ${INTEL_MKL_DIR})
SET(INTEL_MKL_DIR "${INTEL_COMPILER_DIR}/mkl")
ENDIF()
ENDIF()
IF (EXISTS ${INTEL_MKL_DIR})
# TODO: diagnostic if dir does not exist
SET(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH}
"${INTEL_MKL_DIR}/include")
SET(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH}
"${INTEL_MKL_DIR}/lib/${mklvers}")
IF (MSVC)
SET(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH}
"${INTEL_MKL_DIR}/lib/${iccvers}")
ENDIF()
ENDIF()
# Try linking multiple libs
MACRO(CHECK_ALL_LIBRARIES LIBRARIES _name _list _flags)
# This macro checks for the existence of the combination of libraries given by _list.
# If the combination is found, this macro checks whether we can link against that library
# combination using the name of a routine given by _name using the linker
# flags given by _flags. If the combination of libraries is found and passes
# the link test, LIBRARIES is set to the list of complete library paths that
# have been found. Otherwise, LIBRARIES is set to FALSE.
# N.B. _prefix is the prefix applied to the names of all cached variables that
# are generated internally and marked advanced by this macro.
SET(_prefix "${LIBRARIES}")
# start checking
SET(_libraries_work TRUE)
SET(${LIBRARIES})
SET(_combined_name)
SET(_paths)
SET(__list)
FOREACH(_elem ${_list})
IF(__list)
SET(__list "${__list} - ${_elem}")
ELSE(__list)
SET(__list "${_elem}")
ENDIF(__list)
ENDFOREACH(_elem)
MESSAGE(STATUS "Checking for [${__list}]")
FOREACH(_library ${_list})
SET(_combined_name ${_combined_name}_${_library})
IF(_libraries_work)
IF(${_library} STREQUAL "gomp")
FIND_PACKAGE(OpenMP)
IF(OPENMP_FOUND)
SET(${_prefix}_${_library}_LIBRARY ${OpenMP_C_FLAGS})
ENDIF(OPENMP_FOUND)
ELSE(${_library} STREQUAL "gomp")
FIND_LIBRARY(${_prefix}_${_library}_LIBRARY NAMES ${_library})
ENDIF(${_library} STREQUAL "gomp")
MARK_AS_ADVANCED(${_prefix}_${_library}_LIBRARY)
SET(${LIBRARIES} ${${LIBRARIES}} ${${_prefix}_${_library}_LIBRARY})
SET(_libraries_work ${${_prefix}_${_library}_LIBRARY})
IF(${_prefix}_${_library}_LIBRARY)
MESSAGE(STATUS " Library ${_library}: ${${_prefix}_${_library}_LIBRARY}")
ELSE(${_prefix}_${_library}_LIBRARY)
MESSAGE(STATUS " Library ${_library}: not found")
ENDIF(${_prefix}_${_library}_LIBRARY)
ENDIF(_libraries_work)
ENDFOREACH(_library ${_list})
# Test this combination of libraries.
IF(_libraries_work)
SET(CMAKE_REQUIRED_LIBRARIES ${_flags} ${${LIBRARIES}})
SET(CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES};${CMAKE_REQUIRED_LIBRARIES}")
CHECK_FUNCTION_EXISTS(${_name} ${_prefix}${_combined_name}_WORKS)
SET(CMAKE_REQUIRED_LIBRARIES)
MARK_AS_ADVANCED(${_prefix}${_combined_name}_WORKS)
SET(_libraries_work ${${_prefix}${_combined_name}_WORKS})
ENDIF(_libraries_work)
# Fin
IF(_libraries_work)
ELSE (_libraries_work)
SET(${LIBRARIES})
MARK_AS_ADVANCED(${LIBRARIES})
ENDIF(_libraries_work)
ENDMACRO(CHECK_ALL_LIBRARIES)
IF(WIN32)
SET(mkl_m "")
SET(mkl_pthread "")
ELSE(WIN32)
SET(mkl_m "m")
SET(mkl_pthread "pthread")
ENDIF(WIN32)
IF(UNIX AND NOT APPLE)
SET(mkl_dl "${CMAKE_DL_LIBS}")
ELSE(UNIX AND NOT APPLE)
SET(mkl_dl "")
ENDIF(UNIX AND NOT APPLE)
# Check for version 10/11
IF (NOT MKL_LIBRARIES)
SET(MKL_VERSION 1011)
ENDIF (NOT MKL_LIBRARIES)
FOREACH(mklrtl ${mklrtls} "")
FOREACH(mkliface ${mklifaces})
FOREACH(mkl64 ${mkl64s} "")
FOREACH(mklthread ${mklthreads})
IF (NOT MKL_LIBRARIES AND NOT INTEL_MKL_SEQUENTIAL)
CHECK_ALL_LIBRARIES(MKL_LIBRARIES cblas_sgemm
"mkl_${mkliface}${mkl64};${mklthread};mkl_core;${mklrtl};${mkl_pthread};${mkl_m};${mkl_dl}" "")
ENDIF (NOT MKL_LIBRARIES AND NOT INTEL_MKL_SEQUENTIAL)
ENDFOREACH(mklthread)
ENDFOREACH(mkl64)
ENDFOREACH(mkliface)
ENDFOREACH(mklrtl)
FOREACH(mklrtl ${mklrtls} "")
FOREACH(mkliface ${mklifaces})
FOREACH(mkl64 ${mkl64s} "")
IF (NOT MKL_LIBRARIES)
CHECK_ALL_LIBRARIES(MKL_LIBRARIES cblas_sgemm
"mkl_${mkliface}${mkl64};mkl_sequential;mkl_core;${mkl_m};${mkl_dl}" "")
IF (MKL_LIBRARIES)
SET(mklseq "_sequential")
ENDIF (MKL_LIBRARIES)
ENDIF (NOT MKL_LIBRARIES)
ENDFOREACH(mkl64)
ENDFOREACH(mkliface)
ENDFOREACH(mklrtl)
FOREACH(mklrtl ${mklrtls} "")
FOREACH(mkliface ${mklifaces})
FOREACH(mkl64 ${mkl64s} "")
FOREACH(mklthread ${mklthreads})
IF (NOT MKL_LIBRARIES)
CHECK_ALL_LIBRARIES(MKL_LIBRARIES cblas_sgemm
"mkl_${mkliface}${mkl64};${mklthread};mkl_core;${mklrtl};pthread;${mkl_m};${mkl_dl}" "")
ENDIF (NOT MKL_LIBRARIES)
ENDFOREACH(mklthread)
ENDFOREACH(mkl64)
ENDFOREACH(mkliface)
ENDFOREACH(mklrtl)
# Check for older versions
IF (NOT MKL_LIBRARIES)
SET(MKL_VERSION 900)
CHECK_ALL_LIBRARIES(MKL_LIBRARIES cblas_sgemm
"mkl;guide;pthread;m" "")
ENDIF (NOT MKL_LIBRARIES)
# Include files
IF (MKL_LIBRARIES)
FIND_PATH(MKL_INCLUDE_DIR "mkl_cblas.h")
MARK_AS_ADVANCED(MKL_INCLUDE_DIR)
ENDIF (MKL_LIBRARIES)
# LibIRC: intel compiler always links this;
# gcc does not; but mkl kernels sometimes need it.
IF (MKL_LIBRARIES)
IF (CMAKE_COMPILER_IS_GNUCC)
FIND_LIBRARY(MKL_KERNEL_libirc "irc")
ELSEIF (CMAKE_C_COMPILER_ID AND NOT CMAKE_C_COMPILER_ID STREQUAL "Intel")
FIND_LIBRARY(MKL_KERNEL_libirc "irc")
ENDIF (CMAKE_COMPILER_IS_GNUCC)
MARK_AS_ADVANCED(MKL_KERNEL_libirc)
IF (MKL_KERNEL_libirc)
SET(MKL_LIBRARIES ${MKL_LIBRARIES} ${MKL_KERNEL_libirc})
ENDIF (MKL_KERNEL_libirc)
ENDIF (MKL_LIBRARIES)
# Final
SET(CMAKE_LIBRARY_PATH ${saved_CMAKE_LIBRARY_PATH})
SET(CMAKE_INCLUDE_PATH ${saved_CMAKE_INCLUDE_PATH})
IF (MKL_LIBRARIES AND MKL_INCLUDE_DIR)
SET(MKL_FOUND TRUE)
set(MKL_cmake_included true)
ELSE (MKL_LIBRARIES AND MKL_INCLUDE_DIR)
SET(MKL_FOUND FALSE)
SET(MKL_VERSION)
ENDIF (MKL_LIBRARIES AND MKL_INCLUDE_DIR)
# Standard termination
IF(NOT MKL_FOUND AND MKL_FIND_REQUIRED)
MESSAGE(FATAL_ERROR "MKL library not found. Please specify library location")
ENDIF(NOT MKL_FOUND AND MKL_FIND_REQUIRED)
IF(NOT MKL_FIND_QUIETLY)
IF(MKL_FOUND)
MESSAGE(STATUS "MKL library found")
ELSE(MKL_FOUND)
MESSAGE(STATUS "MKL library not found")
return()
ENDIF(MKL_FOUND)
ENDIF(NOT MKL_FIND_QUIETLY)
# Do nothing if MKL_FOUND was set before!
ENDIF (NOT MKL_FOUND)