From 5a9b2b3b116a401b752a7a48c0bcae56eb2bf89b Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Mon, 2 May 2016 11:40:01 -0400
Subject: [PATCH] FindBoost: Fix Boost_NO_SYSTEM_PATHS to not consider
 environment (#15702)

Previously we added only NO_CMAKE_SYSTEM_PATH to find command calls.
Add NO_SYSTEM_ENVIRONMENT_PATH too so that paths found from system
environment variables are not considered either.
---
 Modules/FindBoost.cmake | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Modules/FindBoost.cmake b/Modules/FindBoost.cmake
index 38ccf78ec0..3d573b83ec 100644
--- a/Modules/FindBoost.cmake
+++ b/Modules/FindBoost.cmake
@@ -982,7 +982,7 @@ if(NOT Boost_INCLUDE_DIR)
   endif()
 
   if( Boost_NO_SYSTEM_PATHS)
-    list(APPEND _boost_INCLUDE_SEARCH_DIRS NO_CMAKE_SYSTEM_PATH)
+    list(APPEND _boost_INCLUDE_SEARCH_DIRS NO_CMAKE_SYSTEM_PATH NO_SYSTEM_ENVIRONMENT_PATH)
   else()
     list(APPEND _boost_INCLUDE_SEARCH_DIRS PATHS
       C:/boost/include
@@ -1251,7 +1251,7 @@ foreach(c DEBUG RELEASE)
       ${Boost_INCLUDE_DIR}/stage/lib
       )
     if( Boost_NO_SYSTEM_PATHS )
-      list(APPEND _boost_LIBRARY_SEARCH_DIRS_${c} NO_CMAKE_SYSTEM_PATH)
+      list(APPEND _boost_LIBRARY_SEARCH_DIRS_${c} NO_CMAKE_SYSTEM_PATH NO_SYSTEM_ENVIRONMENT_PATH)
     else()
       list(APPEND _boost_LIBRARY_SEARCH_DIRS_${c} PATHS
         C:/boost/lib
-- 
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