Move all to deprecated folder.

deprecated/3P/civetweb/cmake/FindLibDl.cmake

@@ -0,0 +1,46 @@
+#.rst:
+# FindLibDl
+# --------
+#
+# Find the native realtime includes and library.
+#
+# IMPORTED Targets
+# ^^^^^^^^^^^^^^^^
+#
+# This module defines :prop_tgt:`IMPORTED` target ``LIBDL::LIBDL``, if
+# LIBDL has been found.
+#
+# Result Variables
+# ^^^^^^^^^^^^^^^^
+#
+# This module defines the following variables:
+#
+# ::
+#
+#   LIBDL_INCLUDE_DIRS  - where to find dlfcn.h, etc.
+#   LIBDL_LIBRARIES     - List of libraries when using libdl.
+#   LIBDL_FOUND         - True if dynamic linking library found.
+#
+# Hints
+# ^^^^^
+#
+# A user may set ``LIBDL_ROOT`` to a library installation root to tell this
+# module where to look.
+
+find_path(LIBDL_INCLUDE_DIRS
+  NAMES dlfcn.h
+  PATHS ${LIBDL_ROOT}/include/
+)
+find_library(LIBDL_LIBRARIES dl)
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(LibDl DEFAULT_MSG LIBDL_LIBRARIES LIBDL_INCLUDE_DIRS)
+mark_as_advanced(LIBDL_INCLUDE_DIRS LIBDL_LIBRARIES)
+
+if(LIBDL_FOUND)
+    if(NOT TARGET LIBDL::LIBDL)
+      add_library(LIBDL::LIBDL UNKNOWN IMPORTED)
+      set_target_properties(LIBDL::LIBDL PROPERTIES
+        IMPORTED_LOCATION "${LIBDL_LIBRARIES}"
+        INTERFACE_INCLUDE_DIRECTORIES "${LIBDL_INCLUDE_DIRS}")
+    endif()
+endif()