# - try to find the udev library
#
# Cache Variables: (probably not for direct use in your scripts)
#  UDEV_INCLUDE_DIR
#  UDEV_SOURCE_DIR
#  UDEV_LIBRARY
#
# Non-cache variables you might use in your CMakeLists.txt:
#  UDEV_FOUND
#  UDEV_INCLUDE_DIRS
#  UDEV_LIBRARIES
#
# Requires these CMake modules:
#  FindPackageHandleStandardArgs (known included with CMake >=2.6.2)
#
# Original Author:
# 2014 Kevin M. Godby <kevin@godby.org>
#
# Distributed under the Boost Software License, Version 1.0.
# (See accompanying file LICENSE_1_0.txt or copy at
# http://www.boost.org/LICENSE_1_0.txt)

set(UDEV_ROOT_DIR
  "${UDEV_ROOT_DIR}"
  CACHE
  PATH
  "Directory to search for udev")

find_package(PkgConfig QUIET)
if(PKG_CONFIG_FOUND)
  pkg_check_modules(PC_LIBUDEV libudev)
endif()

find_library(UDEV_LIBRARY
  NAMES
  udev
  PATHS
  ${PC_LIBUDEV_LIBRARY_DIRS}
  ${PC_LIBUDEV_LIBDIR}
  /usr/lib64
  /usr/lib
  /usr/local/lib
  HINTS
  "${UDEV_ROOT_DIR}"
  PATH_SUFFIXES
  lib
  )

get_filename_component(_libdir "${UDEV_LIBRARY}" PATH)

find_path(UDEV_INCLUDE_DIR
  NAMES
  libudev.h
  PATHS
  /usr/include
  /usr/local/include
  ${PC_LIBUDEV_INCLUDE_DIRS}
  ${PC_LIBUDEV_INCLUDEDIR}
  HINTS
  "${_libdir}"
  "${_libdir}/.."
  "${UDEV_ROOT_DIR}"
  PATH_SUFFIXES
  include
  )

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(udev
  DEFAULT_MSG
  UDEV_LIBRARY
  UDEV_INCLUDE_DIR
  )

if (UDEV_INCLUDE_DIR AND UDEV_LIBRARY)
  set(UDEV_FOUND TRUE)
endif (UDEV_INCLUDE_DIR AND UDEV_LIBRARY)

if(UDEV_FOUND)
  list(APPEND UDEV_LIBRARIES ${UDEV_LIBRARY})
  list(APPEND UDEV_INCLUDE_DIRS ${UDEV_INCLUDE_DIR})
  mark_as_advanced(UDEV_ROOT_DIR)
endif()

mark_as_advanced(UDEV_INCLUDE_DIR
  UDEV_LIBRARY)