# - Find Intel IPP
# Find the IPP libraries
# Options:
#
#   IPP_STATIC: true if using static linking
#   IPP_MULTI_THREADED: true if using multi-threaded static linking
#
# This module defines the following variables:
#
#   IPP_FOUND       : True if IPP_INCLUDE_DIR are found
#   IPP_INCLUDE_DIR : where to find ipp.h, etc.
#   IPP_INCLUDE_DIRS: set when IPP_INCLUDE_DIR found
#   IPP_LIBRARIES   : the library to link against.

set(IPP_STATIC ON)

include(FindPackageHandleStandardArgs)

if(WIN32)
    set(IPP_OLD_ROOT "$ENV{PROGRAMFILES\(X86\)}/IntelSWTools/compilers_and_libraries/windows/ipp")
    set(IPP_NEW_ROOT "$ENV{PROGRAMFILES\(X86\)}/Intel/oneAPI/ipp/latest")
else()
    set(IPP_OLD_ROOT "/opt/intel/ipp")
    set(IPP_NEW_ROOT "/opt/intel/oneapi/ipp/latest")
endif()

if (EXISTS "${IPP_OLD_ROOT}" AND NOT EXISTS "${IPP_NEW_ROOT}")
    set(IPP_ROOT "${IPP_OLD_ROOT}" CACHE PATH "Folder contains IPP")
else()
    set(IPP_ROOT "${IPP_NEW_ROOT}" CACHE PATH "Folder contains IPP")
endif()

# Find header file dir
find_path(IPP_INCLUDE_DIR ipp.h
          PATHS ${IPP_ROOT}/include)

# Find libraries

# Handle suffix
set(_IPP_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES})

if(WIN32)
    set(CMAKE_FIND_LIBRARY_SUFFIXES .lib)
    set(IPP_LIBNAME_SUFFIX mt)
else()
    if(IPP_STATIC)
        set(CMAKE_FIND_LIBRARY_SUFFIXES .a)
    else()
        set(CMAKE_FIND_LIBRARY_SUFFIXES .so)
    endif()
    set(IPP_LIBNAME_SUFFIX "")
endif()

macro(find_ipp_library IPP_COMPONENT)
    string(TOLOWER ${IPP_COMPONENT} IPP_COMPONENT_LOWER)

    find_library(IPP_LIB_${IPP_COMPONENT} ipp${IPP_COMPONENT_LOWER}${IPP_LIBNAME_SUFFIX}
            PATHS ${IPP_ROOT}/lib/intel64/ ${IPP_ROOT}/lib)
endmacro()

# IPP components
# Core
find_ipp_library(CORE)
# Signal Processing
find_ipp_library(S)
# Vector Math
find_ipp_library(VM)

set(IPP_LIBRARY
    ${IPP_LIB_S}
    ${IPP_LIB_VM}
    ${IPP_LIB_CORE})

set(CMAKE_FIND_LIBRARY_SUFFIXES ${_IPP_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES})

find_package_handle_standard_args(IPP DEFAULT_MSG
        IPP_INCLUDE_DIR IPP_LIBRARY)

if (IPP_FOUND)
    set(IPP_INCLUDE_DIRS ${IPP_INCLUDE_DIR})
    set(IPP_LIBRARIES ${IPP_LIBRARY})
endif()