$OpenBSD: patch-configure_ac,v 1.2 2017/12/12 01:10:50 jca Exp $
Index: configure.ac
--- configure.ac.orig
+++ configure.ac
@@ -60,6 +60,7 @@ dnl Checks for library functions.
 AC_FUNC_MEMCMP
 AC_CHECK_FUNCS([stricmp] [strcasecmp])
 AC_CHECK_FUNCS([strchr] [memcpy])
+AC_CHECK_FUNCS([pledge])
 
 AC_CHECK_FUNCS([getopt] [getopt_long])
 
