CMake Module for finding librt

cmake/FindLibRt.cmake

@@ -0,0 +1,46 @@
+#.rst:
+# FindLibRt
+# --------
+#
+# Find the native realtime includes and library.
+#
+# IMPORTED Targets
+# ^^^^^^^^^^^^^^^^
+#
+# This module defines :prop_tgt:`IMPORTED` target ``LIBRT::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 ${LIBRT_ROOT}/include/
+)
+find_library(LIBRT_LIBRARIES rt)
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(LibRt DEFAULT_MSG LIBRT_LIBRARIES LIBRT_INCLUDE_DIRS)
+mark_as_advanced(LIBRT_INCLUDE_DIRS LIBRT_LIBRARIES)
+
+if(LIBRT_FOUND)
+    if(NOT TARGET LIBRT::LIBRT)
+      add_library(LIBRT::LIBRT UNKNOWN IMPORTED)
+      set_target_properties(LIBRT::LIBRT PROPERTIES
+        IMPORTED_LOCATION "${LIBRT_LIBRARIES}"
+        INTERFACE_INCLUDE_DIRECTORIES "${LIBRT_INCLUDE_DIRS}")
+    endif()
+endif()