# This cmake script is taken from the OpenCV project (BSD license)

#

# The script to detect Intel(R) Integrated Performance Primitives (IPP)

# installation/package

#

# This will try to find Intel IPP libraries, and include path by automatic

# search through typical install locations and if failed it will

# examine IPPROOT environment variable.

# Note, IPPROOT is not set by IPP installer, it should be set manually.

#

# On return this will define:

#

# IPP_FOUND        - True if Intel IPP found

# IPP_ROOT_DIR     - root of IPP installation

# IPP_INCLUDE_DIRS - IPP include folder

# IPP_LIBRARY_DIRS - IPP libraries folder

# IPP_LIBRARIES    - IPP libraries names that are used by OpenCV

# IPP_LATEST_VERSION_STR   - string with the newest detected IPP version

# IPP_LATEST_VERSION_MAJOR - numbers of IPP version (MAJOR.MINOR.BUILD)

# IPP_LATEST_VERSION_MINOR

# IPP_LATEST_VERSION_BUILD

#

# Created: 30 Dec 2010 by Vladimir Dudnik (vladimir.dudnik@intel.com)

#

set(IPP_FOUND)

set(IPP_VERSION_STR "5.3.0.0") # will not detect earlier versions

set(IPP_VERSION_MAJOR 0)

set(IPP_VERSION_MINOR 0)

set(IPP_VERSION_BUILD 0)

set(IPP_ROOT_DIR)

set(IPP_INCLUDE_DIRS)

set(IPP_LIBRARY_DIRS)

set(IPP_LIBRARIES)

set(IPP_LIB_PREFIX ${CMAKE_STATIC_LIBRARY_PREFIX})

set(IPP_LIB_SUFFIX  ${CMAKE_STATIC_LIBRARY_SUFFIX})

set(IPP_PREFIX "ipp")

set(IPP_SUFFIX "_l")

set(IPPCORE    "core") # core functionality

set(IPPS       "s")    # signal processing

set(IPPI       "i")    # image processing

set(IPPCC      "cc")   # color conversion

set(IPPCV      "cv")   # computer vision

set(IPPVM      "vm")   # vector math

set(IPP_X64 0)

if (CMAKE_SIZEOF_VOID_P EQUAL 8)

    set(IPP_X64 1)

endif()

if (CMAKE_CL_64)

    set(IPP_X64 1)

endif()

# ------------------------------------------------------------------------

# This function detect IPP version by analyzing ippversion.h file

# Note, ippversion.h file was inroduced since IPP 5.3

# ------------------------------------------------------------------------

function(get_ipp_version _ROOT_DIR)

    set(_VERSION_STR)

    set(_MAJOR)

    set(_MINOR)

    set(_BUILD)

    # read IPP version info from file

    file(STRINGS ${_ROOT_DIR}/include/ippversion.h STR1 REGEX "IPP_VERSION_MAJOR")

    file(STRINGS ${_ROOT_DIR}/include/ippversion.h STR2 REGEX "IPP_VERSION_MINOR")

    file(STRINGS ${_ROOT_DIR}/include/ippversion.h STR3 REGEX "IPP_VERSION_BUILD")

    if(NOT STR3)

	file(STRINGS ${_ROOT_DIR}/include/ippversion.h STR3 REGEX "IPP_VERSION_UPDATE")

    endif()

    file(STRINGS ${_ROOT_DIR}/include/ippversion.h STR4 REGEX "IPP_VERSION_STR")

    # extract info and assign to variables

    string(REGEX MATCHALL "[0-9]+" _MAJOR ${STR1})

    string(REGEX MATCHALL "[0-9]+" _MINOR ${STR2})

    string(REGEX MATCHALL "[0-9]+" _BUILD ${STR3})

    string(REGEX MATCHALL "[0-9]+[.]+[0-9]+[^\"]+|[0-9]+[.]+[0-9]+" _VERSION_STR ${STR4})

    # export info to parent scope

    set(IPP_VERSION_STR   ${_VERSION_STR} PARENT_SCOPE)

    set(IPP_VERSION_MAJOR ${_MAJOR}       PARENT_SCOPE)

    set(IPP_VERSION_MINOR ${_MINOR}       PARENT_SCOPE)

    set(IPP_VERSION_BUILD ${_BUILD}       PARENT_SCOPE)

    message(STATUS "found IPP: ${_MAJOR}.${_MINOR}.${_BUILD} [${_VERSION_STR}]")

    message(STATUS "at: ${_ROOT_DIR}")

    return()

endfunction()

# ------------------------------------------------------------------------

# This is auxiliary function called from set_ipp_variables()

# to set IPP_LIBRARIES variable in IPP 6.x style (IPP 5.3 should also work)

# ------------------------------------------------------------------------

function(set_ipp_old_libraries)

    set(IPP_PREFIX "ipp")

    set(IPP_SUFFIX)            # old style static core libs suffix

    set(IPP_ARCH)              # architecture suffix

    set(IPP_DISP   "emerged")  # old style dipatcher and cpu-specific

    set(IPP_MRGD   "merged")   #   static libraries

    set(IPPCORE    "core")     # core functionality

    set(IPPSP      "s")        # signal processing

    set(IPPIP      "i")        # image processing

    set(IPPCC      "cc")       # color conversion

    set(IPPCV      "cv")       # computer vision

    set(IPPVM      "vm")       # vector math

    if (IPP_X64)

        set(IPP_ARCH "em64t")

    endif()

    if(WIN32)

        set(IPP_SUFFIX "l")

    endif()

    set(IPP_LIBRARIES

        ${IPP_LIB_PREFIX}${IPP_PREFIX}${IPPVM}${IPP_MRGD}${IPP_ARCH}${IPP_LIB_SUFFIX}

        ${IPP_LIB_PREFIX}${IPP_PREFIX}${IPPVM}${IPP_DISP}${IPP_ARCH}${IPP_LIB_SUFFIX}

        ${IPP_LIB_PREFIX}${IPP_PREFIX}${IPPCC}${IPP_MRGD}${IPP_ARCH}${IPP_LIB_SUFFIX}

        ${IPP_LIB_PREFIX}${IPP_PREFIX}${IPPCC}${IPP_DISP}${IPP_ARCH}${IPP_LIB_SUFFIX}

        ${IPP_LIB_PREFIX}${IPP_PREFIX}${IPPCV}${IPP_MRGD}${IPP_ARCH}${IPP_LIB_SUFFIX}

        ${IPP_LIB_PREFIX}${IPP_PREFIX}${IPPCV}${IPP_DISP}${IPP_ARCH}${IPP_LIB_SUFFIX}

        ${IPP_LIB_PREFIX}${IPP_PREFIX}${IPPIP}${IPP_MRGD}${IPP_ARCH}${IPP_LIB_SUFFIX}

        ${IPP_LIB_PREFIX}${IPP_PREFIX}${IPPIP}${IPP_DISP}${IPP_ARCH}${IPP_LIB_SUFFIX}

        ${IPP_LIB_PREFIX}${IPP_PREFIX}${IPPSP}${IPP_MRGD}${IPP_ARCH}${IPP_LIB_SUFFIX}

        ${IPP_LIB_PREFIX}${IPP_PREFIX}${IPPSP}${IPP_DISP}${IPP_ARCH}${IPP_LIB_SUFFIX}

        ${IPP_LIB_PREFIX}${IPP_PREFIX}${IPPCORE}${IPP_ARCH}${IPP_SUFFIX}${IPP_LIB_SUFFIX}

        PARENT_SCOPE)

    return()

endfunction()

# ------------------------------------------------------------------------

# This is auxiliary function called from set_ipp_variables()

# to set IPP_LIBRARIES variable in IPP 7.x style

# ------------------------------------------------------------------------

function(set_ipp_new_libraries)

    set(IPP_PREFIX "ipp")

    set(IPP_SUFFIX "_l")       # static not threaded libs suffix

    set(IPP_THRD   "_t")       # static threaded libs suffix

    set(IPPCORE    "core")     # core functionality

    set(IPPSP      "s")        # signal processing

    set(IPPIP      "i")        # image processing

    set(IPPCC      "cc")       # color conversion

    set(IPPCV      "cv")       # computer vision

    set(IPPVM      "vm")       # vector math

    set(IPP_LIBRARIES

        ${IPP_LIB_PREFIX}${IPP_PREFIX}${IPPVM}${IPP_SUFFIX}${IPP_LIB_SUFFIX}

        ${IPP_LIB_PREFIX}${IPP_PREFIX}${IPPCC}${IPP_SUFFIX}${IPP_LIB_SUFFIX}

        ${IPP_LIB_PREFIX}${IPP_PREFIX}${IPPCV}${IPP_SUFFIX}${IPP_LIB_SUFFIX}

        ${IPP_LIB_PREFIX}${IPP_PREFIX}${IPPI}${IPP_SUFFIX}${IPP_LIB_SUFFIX}

        ${IPP_LIB_PREFIX}${IPP_PREFIX}${IPPS}${IPP_SUFFIX}${IPP_LIB_SUFFIX}

        ${IPP_LIB_PREFIX}${IPP_PREFIX}${IPPCORE}${IPP_SUFFIX}${IPP_LIB_SUFFIX}

        PARENT_SCOPE)

    return()

endfunction()

# ------------------------------------------------------------------------

# This function will set

# IPP_INCLUDE_DIRS, IPP_LIBRARY_DIRS and IPP_LIBRARIES variables depending

# on IPP version parameter.

# Since IPP 7.0 version library names and install folder structure

# was changed

# ------------------------------------------------------------------------

function(set_ipp_variables _LATEST_VERSION)

    if(${_LATEST_VERSION} VERSION_LESS "7.0")

#        message(STATUS "old")

        # set INCLUDE and LIB folders

        set(IPP_INCLUDE_DIRS ${IPP_ROOT_DIR}/include PARENT_SCOPE)

        set(IPP_LIBRARY_DIRS ${IPP_ROOT_DIR}/lib     PARENT_SCOPE)

        if (IPP_X64)

            if(NOT EXISTS ${IPP_ROOT_DIR}/../em64t)

                message(SEND_ERROR "IPP EM64T libraries not found")

            endif()

        else()

            if(NOT EXISTS ${IPP_ROOT_DIR}/../ia32)

                message(SEND_ERROR "IPP IA32 libraries not found")

            endif()

        endif()

        # set IPP_LIBRARIES variable (6.x lib names)

        set_ipp_old_libraries()

        set(IPP_LIBRARIES ${IPP_LIBRARIES} PARENT_SCOPE)

        message(STATUS "IPP libs: ${IPP_LIBRARIES}")

    else()

#        message(STATUS "new")

        # set INCLUDE and LIB folders

        set(IPP_INCLUDE_DIRS ${IPP_ROOT_DIR}/include PARENT_SCOPE)

        if(APPLE)

            set(IPP_LIBRARY_DIRS ${IPP_ROOT_DIR}/lib PARENT_SCOPE)

        else()

            if(IPP_X64)

                if(NOT EXISTS ${IPP_ROOT_DIR}/lib/intel64)

                    message(SEND_ERROR "IPP EM64T libraries not found")

                endif()

                set(IPP_LIBRARY_DIRS ${IPP_ROOT_DIR}/lib/intel64 PARENT_SCOPE)

            else()

                if(NOT EXISTS ${IPP_ROOT_DIR}/lib/ia32)

                    message(SEND_ERROR "IPP IA32 libraries not found")

                endif()

                set(IPP_LIBRARY_DIRS ${IPP_ROOT_DIR}/lib/ia32 PARENT_SCOPE)

            endif()

        endif()

        # set IPP_LIBRARIES variable (7.x lib names)

        set_ipp_new_libraries()

        set(IPP_LIBRARIES ${IPP_LIBRARIES} PARENT_SCOPE)

        message(STATUS "IPP libs: ${IPP_LIBRARIES}")

    endif()

    return()

endfunction()

# ------------------------------------------------------------------------

# This section will look for IPP through IPPROOT env variable

# Note, IPPROOT is not set by IPP installer, you may need to set it manually

# ------------------------------------------------------------------------

find_path(

    IPP_H_PATH

    NAMES ippversion.h

    PATHS $ENV{IPPROOT}

    PATH_SUFFIXES include

    DOC "The path to Intel(R) IPP header files"

    NO_DEFAULT_PATH

    NO_CMAKE_PATH)

if(IPP_H_PATH)

    set(IPP_FOUND 1)

    # traverse up to IPPROOT level

    get_filename_component(IPP_ROOT_DIR ${IPP_H_PATH} PATH)

    # extract IPP version info

    get_ipp_version(${IPP_ROOT_DIR})

    # keep info in the same vars for auto search and search by IPPROOT

    set(IPP_LATEST_VERSION_STR   ${IPP_VERSION_STR})

    set(IPP_LATEST_VERSION_MAJOR ${IPP_VERSION_MAJOR})

    set(IPP_LATEST_VERSION_MINOR ${IPP_VERSION_MINOR})

    set(IPP_LATEST_VERSION_BUILD ${IPP_VERSION_BUILD})

    # set IPP INCLUDE, LIB dirs and library names

    set_ipp_variables(${IPP_LATEST_VERSION_STR})

endif()

if(NOT IPP_FOUND)

    # reset var from previous search

    set(IPP_H_PATH)

    # ------------------------------------------------------------------------

    # This section will look for IPP through system program folders

    # Note, if several IPP installations found the newest version will be

    # selected

    # ------------------------------------------------------------------------

    foreach(curdir ${CMAKE_SYSTEM_PREFIX_PATH} /opt)

        set(curdir ${curdir}/intel)

        file(TO_CMAKE_PATH ${curdir} CURDIR)

        if(EXISTS ${curdir})

            file(GLOB_RECURSE IPP_H_DIR ${curdir}/ippversion.h)

            if(IPP_H_DIR)

                set(IPP_FOUND 1)

            endif()

            # init IPP_LATEST_VERSION  version with oldest detectable version (5.3.0.0)

            #   IPP prior 5.3 did not have ippversion.h file

            set(IPP_LATEST_VERSION_STR ${IPP_VERSION_STR})

            # look through all dirs where ippversion.h was found

            foreach(item ${IPP_H_DIR})

                # traverse up to IPPROOT level

                get_filename_component(_FILE_PATH ${item} PATH)

                get_filename_component(_ROOT_DIR ${_FILE_PATH} PATH)

                # extract IPP version info

                get_ipp_version(${_ROOT_DIR})

                # remember the latest version (if many found)

                if(${IPP_LATEST_VERSION_STR} VERSION_LESS ${IPP_VERSION_STR})

                    set(IPP_LATEST_VERSION_STR   ${IPP_VERSION_STR})

                    set(IPP_LATEST_VERSION_MAJOR ${IPP_VERSION_MAJOR})

                    set(IPP_LATEST_VERSION_MINOR ${IPP_VERSION_MINOR})

                    set(IPP_LATEST_VERSION_BUILD ${IPP_VERSION_BUILD})

                    set(IPP_ROOT_DIR ${_ROOT_DIR})

                endif()

            endforeach()

        endif()

    endforeach()

endif()

if(IPP_FOUND)

    # set IPP INCLUDE, LIB dirs and library names

    set_ipp_variables(${IPP_LATEST_VERSION_STR})

    # set CACHE variable IPP_H_PATH,

    # path to IPP header files for the latest version

    find_path(

        IPP_H_PATH

        NAMES ippversion.h

        PATHS ${IPP_ROOT_DIR}

        PATH_SUFFIXES include

        DOC "The path to Intel(R) IPP header files"

        NO_DEFAULT_PATH

        NO_CMAKE_PATH)

endif()

if(WIN32 AND MINGW AND NOT IPP_LATEST_VERSION_MAJOR LESS 7)

    # Since IPP built with Microsoft compiler and /GS option

    # ======================================================

    # From Windows SDK 7.1

    #   (usually in "C:\Program Files\Microsoft Visual Studio 10.0\VC\lib"),

    # to avoid undefined reference to __security_cookie and _chkstk:

    set(MSV_RUNTMCHK "RunTmChk")

    set(IPP_LIBRARIES ${IPP_LIBRARIES} ${MSV_RUNTMCHK}${IPP_LIB_SUFFIX})

    # To avoid undefined reference to _alldiv and _chkstk

    # ===================================================

    # NB: it may require a recompilation of w32api (after having modified

    #     the file ntdll.def) to export the required functions

    #     See http://code.opencv.org/issues/1906 for additional details

    set(MSV_NTDLL    "ntdll")

    set(IPP_LIBRARIES ${IPP_LIBRARIES} ${MSV_NTDLL}${IPP_LIB_SUFFIX})

endif()

# ------------------------------------------------------------------------

# This section will look for the IPP "compiler" dependent library

# libiomp5.

# ------------------------------------------------------------------------

foreach(curdir ${CMAKE_SYSTEM_PREFIX_PATH} /opt)

    set(curdir ${curdir}/intel)

    if(EXISTS ${curdir})

        file(GLOB_RECURSE liblist FOLLOW_SYMLINKS ${curdir}/libiomp5.*)

        foreach(lib ${liblist})

            get_filename_component(libdir ${lib} REALPATH)

            get_filename_component(libdir ${libdir} PATH)

            if(${IPP_VERSION_MAJOR} VERSION_LESS "7")

                set(IPP_COMPILER_LIBRARY_DIRS ${libdir})

                set(IPP_COMPILER_LIBRARIES iomp5)

            else()

                if(APPLE)

                    set(IPP_COMPILER_LIBRARY_DIRS ${libdir})

                    set(IPP_COMPILER_LIBRARIES iomp5)

                else()

                    if(IPP_X64)

                        if(("${libdir}" MATCHES "intel64"))

                            set(IPP_COMPILER_LIBRARY_DIRS ${libdir})

                            set(IPP_COMPILER_LIBRARIES iomp5)

                        endif()

                    else()

                        set(IPP_COMPILER_LIBRARY_DIRS ${libdir})

                        set(IPP_COMPILER_LIBRARIES iomp5)

                    endif()

                endif()

            endif()

        endforeach(lib)

    endif()

endforeach(curdir)

# ------------------------------------------------------------------------

# Build fullpath library list.

# ------------------------------------------------------------------------

find_library(LIB_IPPI ippi PATHS ${IPP_LIBRARY_DIRS})

set(IPP_LIBRARY_LIST ${IPP_LIBRARY_LIST} ${LIB_IPPI})

find_library(LIB_IPPS ipps PATHS ${IPP_LIBRARY_DIRS})

set(IPP_LIBRARY_LIST ${IPP_LIBRARY_LIST} ${LIB_IPPS})

find_library(LIB_IPPCORE ippcore PATHS ${IPP_LIBRARY_DIRS})

set(IPP_LIBRARY_LIST ${IPP_LIBRARY_LIST} ${LIB_IPPCORE})

find_library(LIB_IOMP5 iomp5 PATHS ${IPP_COMPILER_LIBRARY_DIRS})

set(IPP_LIBRARY_LIST ${IPP_LIBRARY_LIST} ${LIB_IOMP5})