#[==============================================[
FindLibUSB
-----------

Searching libusb-1.0 library and creating imported 
target LibUSB::LibUSB

#]==============================================]

# TODO Append parts for Version compasion and REQUIRED support

if (MSVC OR MINGW)
    return()
endif()

if (NOT TARGET LibUSB::LibUSB)
  include(FindPkgMacros)
  findpkg_begin(LibUSB)

  # Get path, convert backslashes as ${ENV_${var}}
  getenv_path(LibUSB_HOME)

  # construct search paths
  set(LibUSB_PREFIX_PATH ${LibUSB_HOME} ${ENV_LibUSB_HOME})
  create_search_paths(LibUSB)
  # redo search if prefix path changed
  clear_if_changed(LibUSB_PREFIX_PATH
    LibUSB_LIBRARY_FWK
    LibUSB_LIBRARY_REL
    LibUSB_LIBRARY_DBG
    LibUSB_LIBRARY_RELEASE
    LibUSB_LIBRARY_DEBUG
    LibUSB_INCLUDE_DIR
  )

  set(LibUSB_LIBRARY_NAMES libusb libusb_static usb-1.0 usb_static-1.0)
  get_debug_names(LibUSB_LIBRARY_NAMES)

  findpkg_framework(LibUSB)
  
  find_path(LibUSB_INCLUDE_DIR NAMES libusb.h HINTS ${LibUSB_INC_SEARCH_PATH} ${LibUSB_PKGC_INCLUDE_DIRS} PATH_SUFFIXES libusb NO_CMAKE_FIND_ROOT_PATH)
  find_library(LibUSB_LIBRARY_REL NAMES ${LibUSB_LIBRARY_NAMES} HINTS ${LibUSB_LIB_SEARCH_PATH} ${LibUSB_PKGC_LIBRARY_DIRS} PATH_SUFFIXES "" Release RelWithDebInfo MinSizeRel ${ANDROID_ABI} NO_CMAKE_FIND_ROOT_PATH)
  find_library(LibUSB_LIBRARY_DBG NAMES ${LibUSB_LIBRARY_NAMES_DBG} HINTS ${LibUSB_LIB_SEARCH_PATH} ${LibUSB_PKGC_LIBRARY_DIRS} PATH_SUFFIXES "" Debug ${ANDROID_ABI} NO_CMAKE_FIND_ROOT_PATH)
  set(LibUSB_LIBRARY_RELEASE ${LibUSB_LIBRARY_REL})
  set(LibUSB_LIBRARY_DEBUG ${LibUSB_LIBRARY_DBG})
  make_library_set(LibUSB_LIBRARY)

  findpkg_finish(LibUSB)

  if(LibUSB_FOUND)
    message(STATUS "libusb-1.0 found")

    add_library(LibUSB::LibUSB UNKNOWN IMPORTED)
    add_library(LibUSB::LibUSBstatic UNKNOWN IMPORTED)
    if (DEFINED LibUSB_INCLUDE_DIRS AND NOT LibUSB_INCLUDE_DIRS STREQUAL "")
      set_target_properties(LibUSB::LibUSB PROPERTIES INTERFACE_INCLUDE_DIRECTORIES ${LibUSB_INCLUDE_DIRS})
      set_target_properties(LibUSB::LibUSBstatic PROPERTIES INTERFACE_INCLUDE_DIRECTORIES ${LibUSB_INCLUDE_DIRS})
    endif()

    if(LibUSB_LIBRARIES)
        set_target_properties(LibUSB::LibUSB PROPERTIES
          IMPORTED_LINK_INTERFACE_LANGUAGES "C"
          IMPORTED_LOCATION_RELEASE ${LibUSB_LIBRARY_REL}
          IMPORTED_LOCATION_DEBUG ${LibUSB_LIBRARY_DBG}
        )
        set_target_properties(LibUSB::LibUSBstatic PROPERTIES
          IMPORTED_LINK_INTERFACE_LANGUAGES "C"
          IMPORTED_LOCATION_RELEASE ${LibUSB_LIBRARY_REL}
          IMPORTED_LOCATION_DEBUG ${LibUSB_LIBRARY_DBG}
        )
    endif()
  endif()
else()
  message(WARNING "libusb-1.0 could not be found")
endif()