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: 31dee66265f39a8ad96fd2f0f24e9f66389a995a
parent: 7ccd41fdb627aabfe125caa8ef436d0a1e90eebf
author: Brian Callahan <bcallah@openbsd.org>
date:   Fri, 26 Jan 2018 11:22:21 -0500

Fix cygwin build

diff --git a/portable.h b/portable.h
@@ -95,7 +95,7 @@
 
 /* Cygwin already has a sys_signame but we want to use our own */
 #ifdef __CYGWIN__
-#define sys_signame	esys_signame
+#undef sys_signame
 #endif /* __CYGWIN__ */
 
 /* From OpenBSD sys/time.h */