SDL: cmake: OpenIndiana announces SunOS, which is the former name of Solaris

SDL Commits
1 
From 032ff64041f1418da24afb1da42af8d2e6a69e9f Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Fri, 26 Aug 2022 02:37:17 +0200
Subject: [PATCH] cmake: OpenIndiana announces SunOS, which is the former name
 of Solaris

---
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5f3d917a0c9..b46bfe8fc4d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -169,7 +169,7 @@ elseif(UNIX AND NOT APPLE)
     set(FREEBSD TRUE)
   elseif(CMAKE_SYSTEM_NAME MATCHES "SYSV5.*")
     set(SYSV5 TRUE)
-  elseif(CMAKE_SYSTEM_NAME MATCHES "Solaris.*")
+  elseif(CMAKE_SYSTEM_NAME MATCHES "Solaris.*|SunOS.*")
     set(SOLARIS TRUE)
   elseif(CMAKE_SYSTEM_NAME MATCHES "HP-UX.*")
     set(HPUX TRUE)