$NetBSD$

--- configure.orig	2020-04-01 09:32:37.000000000 +0000
+++ configure
@@ -275,7 +275,7 @@ fi
 #
 # Check for some compiler warning flags.
 #
-for f in all extra error shadow "format=2" missing-prototypes \
+for f in all extra shadow "format=2" missing-prototypes \
 	missing-declarations nested-externs vla overlength-strings \
 	unsafe-loop-optimizations undef sign-compare \
 	missing-include-dirs old-style-definition \