FindUdev.cmake

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#[=======================================================================[.rst:
FindUdev
--------

Find udev headers and libraries.

Imported Targets
^^^^^^^^^^^^^^^^

``Udev::Udev``
  The udev library, if found.

Result Variables
^^^^^^^^^^^^^^^^

This will define the following variables in your project:

``Udev_FOUND``
  true if (the requested version of) udev is available.
``Udev_VERSION``
  the udev version.
``Udev_LIBRARIES``
  the library to link against to use udev.
``Udev_INCLUDE_DIRS``
  where to find the udev headers.
``Udev_COMPILE_OPTIONS``
  this should be passed to target_compile_options(), if the imported
  target is not used for linking.

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

find_package(PkgConfig QUIET)
pkg_check_modules(PC_LIBUDEV QUIET libusev)
set(Udev_COMPILE_OPTIONS ${PC_LIBUDEV_CFLAGS_OTHER})
set(Udev_VERSION ${PC_LIBUDEV_VERSION})

find_path(Udev_INCLUDE_DIR
    NAMES libudev.h
    HINTS ${PC_LIBUDEV_INCLUDEDIR}
          ${PC_LIBUDEV_INCLUDE_DIRS}
)

find_library(Udev_LIBRARY
    NAMES udev
    HINTS ${PC_LIBUDEV_LIBDIR}
          ${PC_LIBUDEV_LIBRARY_DIRS}
)

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Udev
    REQUIRED_VARS Udev_LIBRARY Udev_INCLUDE_DIR
    VERSION_VAR Udev_VERSION
)

if (Udev_LIBRARY AND NOT TARGET Udev::Udev)
    add_library(Udev::Udev UNKNOWN IMPORTED GLOBAL)
    set_target_properties(Udev::Udev PROPERTIES
        IMPORTED_LOCATION "${Udev_LIBRARY}"
        INTERFACE_COMPILE_OPTIONS "${Udev_COMPILE_OPTIONS}"
        INTERFACE_INCLUDE_DIRECTORIES "${Udev_INCLUDE_DIR}"
    )
endif ()

mark_as_advanced(
    Udev_INCLUDE_DIR
    Udev_LIBRARY
)

if (Udev_FOUND)
    set(Udev_LIBRARIES ${Udev_LIBRARY})
    set(Udev_INCLUDE_DIRS ${Udev_INCLUDE_DIR})
endif ()