CMake: bump the minimal required version to 3.5

[libftdi] / cmake / FindLibUSB.cmake

# - Try to find the libusb library
# Once done this defines
#
#  LIBUSB_FOUND - system has libusb
#  LIBUSB_INCLUDE_DIR - the libusb include directory
#  LIBUSB_LIBRARIES - Link these to use libusb

# Copyright (c) 2006, 2008  Laurent Montel, <montel@kde.org>
#
# Redistribution and use is allowed according to the terms of the BSD license.
# For details see the accompanying COPYING-CMAKE-SCRIPTS file.

if (LIBUSB_INCLUDE_DIR AND LIBUSB_LIBRARIES)

  # in cache already
  set(LIBUSB_FOUND TRUE)

else (LIBUSB_INCLUDE_DIR AND LIBUSB_LIBRARIES)
  # use pkg-config to get the directories and then use these values
  # in the FIND_PATH() and FIND_LIBRARY() calls
  find_package(PkgConfig)
  pkg_check_modules(PC_LIBUSB libusb-1.0)

  find_path(LIBUSB_INCLUDE_DIR libusb.h
    PATH_SUFFIXES libusb-1.0
    PATHS ${PC_LIBUSB_INCLUDEDIR} ${PC_LIBUSB_INCLUDE_DIRS})

  find_library(LIBUSB_LIBRARIES NAMES ${PC_LIBUSB_LIBRARIES}
    PATHS ${PC_LIBUSB_LIBDIR} ${PC_LIBUSB_LIBRARY_DIRS})

  include(FindPackageHandleStandardArgs)
  find_package_handle_standard_args(
    LibUSB DEFAULT_MSG LIBUSB_LIBRARIES LIBUSB_INCLUDE_DIR
  )

  mark_as_advanced(LIBUSB_INCLUDE_DIR LIBUSB_LIBRARIES)

endif (LIBUSB_INCLUDE_DIR AND LIBUSB_LIBRARIES)