$NetBSD$

--- include/sm/config.h.orig	2020-05-19 21:54:32.000000000 +0200
+++ include/sm/config.h	2021-03-18 15:31:07.604319123 +0100
@@ -23,16 +23,14 @@
 #  include "sm_os.h"
 
 /*
 **  SM_CONF_STDBOOL_H is 1 if <stdbool.h> exists
-**
-**  Note, unlike gcc, clang doesn't apply full prototypes to K&R definitions.
 */
 
 # ifndef SM_CONF_STDBOOL_H
-#  if !defined(__clang__) && defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
+#  if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
 #   define SM_CONF_STDBOOL_H		1
-#  else
+#  else 
 #   define SM_CONF_STDBOOL_H		0
 #  endif
 # endif /* ! SM_CONF_STDBOOL_H */
 
