oksh-noxz [fork] Portable OpenBSD ksh, based on the Public Domain Korn Shell (pdksh).
	git clone https://noxz.tech/git/oksh-noxz.git
	oksh-noxz

commit: 009e70de0d488018408bf2235acf2e0f609384b2
parent: 1484194991047799798e4078782ce535eb696d1a
author: Brian Callahan <bcallah@openbsd.org>
date:   Fri, 1 May 2020 11:58:20 -0400

Explicitly say "no" if you don't have __dead2.

diff --git a/configure b/configure
@@ -652,6 +652,7 @@ else
     echo "#define __dead __dead2" >> pconfig.h
     echo "yes"
   else
+    echo "no"
     printf "checking for __attribute__((__noreturn__))... "
     noreturncheck
     if [ $? -eq 0 ] ; then