From 7dbf15eeaeb3b48930d120386508c2787928f372 Mon Sep 17 00:00:00 2001
From: Chord <chord@tuta.io>
Date: Mon, 25 Jul 2016 01:18:14 -0400
Subject: [PATCH] Fix Makefile if

---
 Makefile.inc | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Makefile.inc b/Makefile.inc
index 6ea1ef7..4075a9e 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -20,8 +20,10 @@ ifeq "$(ARCH)" ""
   endif
 endif
 
-ifeq "$(OS)" ""
-$(error "Unable to determine operating system")
+ifeq "$(OS1)" ""
+  ifeq "$(OS2)" ""
+    $(error "Unable to determine operating system")
+  endif
 endif
 
 # Consolidate the GCC architecture value.