From 842d4fe071fc58dc1f9057ea3f62d86b56f03a8d Mon Sep 17 00:00:00 2001
From: Andy Fiddaman <illumos@fiddaman.net>
Date: Mon, 8 Aug 2022 13:25:39 +0000
Subject: [PATCH] Add __illumos__ definition

---
 src/cpp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/cpp.c b/src/cpp.c
index 93db7e9..471d9d1 100644
--- a/src/cpp.c
+++ b/src/cpp.c
@@ -1568,6 +1568,7 @@ main(argc,argv)
 	if (! nopredef) {
 	ysysloc=stsym("unix");
 	ysysloc=stsym("sun");
+	ysysloc=stsym("__illumos__");
 # if __sparc__
 	varloc=stsym ("sparc");
 # endif