undefined variables (defaults to "ignore"). "--warn-undefined-variables" is
deprecated, and is translated to "--warn=undefined-vars" internally.
+* New feature: Control warnings with the .WARNINGS variable
+ In addition to --warn from the command line, which take effect for make
+ invoked recursively, warnings can be controlled only for the current
+ instance of make using the .WARNINGS variable.
+
\f
Version 4.4.1 (26 Feb 2023)