build/parser: detect invalid defaults

enjoy-digital · May 31, 2024 · c8e6725 · c8e6725
1 parent 5630334
commit c8e6725
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/litex/build/parser.py b/litex/build/parser.py
@@ -225,6 +225,13 @@ def parse_args(self, args=None, namespace=None):
         # Injects arguments default values
         if len(self._args_default):
             argparse.ArgumentParser.set_defaults(self, **self._args_default)
+            # Catch defaults which do not match any arguments - typos?
+            remaining = list(self._args_default.keys())
+            for action in self._actions:
+                if action.dest in remaining:
+                    remaining.remove(action.dest)
+            if len(remaining) > 0:
+                raise ValueError(f"set_default() for invalid argument(s): {remaining}")
 
         # Parse args.
         self._args = argparse.ArgumentParser.parse_args(self, args, namespace)