From 7e36ab18482ab0e0c9f2971dbacaca23f5ca06f7 Mon Sep 17 00:00:00 2001
From: Laurent Rineau <laurent.rineau@cgal.org>
Date: Thu, 26 Sep 2019 15:52:20 +0200
Subject: [PATCH] FindTBB.cmake: read both TBBROOT and TBB_ROOT

Fix #4240
---
 Installation/cmake/modules/FindTBB.cmake | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Installation/cmake/modules/FindTBB.cmake b/Installation/cmake/modules/FindTBB.cmake
index b1a3d884c65..23caa1cbf9a 100644
--- a/Installation/cmake/modules/FindTBB.cmake
+++ b/Installation/cmake/modules/FindTBB.cmake
@@ -192,6 +192,11 @@ endmacro()
 # Get path, convert backslashes as ${ENV_${var}}
 getenv_path(TBB_ROOT)
 
+if(NOT ENV_TBB_ROOT)
+  getenv_path(TBBROOT)
+  set(ENV_TBB_ROOT ${ENV_TBBROOT})
+endif()
+
 # initialize search paths
 set(TBB_PREFIX_PATH ${TBB_ROOT} ${ENV_TBB_ROOT})
 set(TBB_INC_SEARCH_PATH "")