From a733c0e3242d56b3bbcc0a25a23c8d9550e6da85 Mon Sep 17 00:00:00 2001
From: Rashad Kanavath <rashad.kanavath@c-s.fr>
Date: Wed, 2 Aug 2017 11:30:06 +0200
Subject: [PATCH] BUG: check if not DEFINED

---
 Packaging/prepare_search_dirs.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Packaging/prepare_search_dirs.cmake b/Packaging/prepare_search_dirs.cmake
index 4ccc875575..29d42c1bb0 100644
--- a/Packaging/prepare_search_dirs.cmake
+++ b/Packaging/prepare_search_dirs.cmake
@@ -3,7 +3,7 @@ function(prepare_search_dirs search_dirs_result)
   set(search_dirs)
   
   if(MSVC)
-    if(DEFINED ENV{UniversalCRTSdkDir})
+    if(NOT DEFINED ENV{UniversalCRTSdkDir})
       message(FATAL_ERROR "UniversalCRTSdkDir variable not set. Cannot continue")
     endif()
     if(NOT DEFINED ENV{VCINSTALLDIR})
-- 
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