#.rst:
# FindLibRt
# --------
#
# Find the native realtime includes and library.
#
# IMPORTED Targets
# ^^^^^^^^^^^^^^^^
#
# This module defines :prop_tgt:`IMPORTED` target ``System::LibRt``, if
# LIBRT has been found.
#
# Result Variables
# ^^^^^^^^^^^^^^^^
#
# This module defines the following variables:
#
# ::
#
#   LIBRT_INCLUDE_DIRS  - where to find time.h, etc.
#   LIBRT_LIBRARIES     - List of libraries when using librt.
#   LIBRT_FOUND         - True if realtime library found.
#
# Hints
# ^^^^^
#
# A user may set ``LIBRT_ROOT`` to a realtime installation root to tell this
# module where to look.

find_path(LIBRT_INCLUDE_DIRS
  NAMES time.h
  PATHS ${LIBRT_ROOT}/include/
)
find_library(LIBRT_LIBRARIES rt)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(LibRt DEFAULT_MSG LIBRT_LIBRARIES LIBRT_INCLUDE_DIRS)
mark_as_advanced(LIBRT_INCLUDE_DIRS LIBRT_LIBRARIES)

if(LIBRT_FOUND)
    if(NOT TARGET System::LibRt)
      add_library(System::LibRt UNKNOWN IMPORTED)
      set_target_properties(System::LibRt PROPERTIES
        IMPORTED_LOCATION "${LIBRT_LIBRARIES}"
        INTERFACE_INCLUDE_DIRECTORIES "${LIBRT_INCLUDE_DIRS}")
    endif()
endif()
