From eddcebf929c507b0a37c96b29a20f877e405dc55 Mon Sep 17 00:00:00 2001
From: tamasmeszaros <meszaros.q@gmail.com>
Date: Thu, 16 Dec 2021 10:56:59 +0100
Subject: [PATCH] Fix repeated calls to FindTBB in module mode.

fixes #6355
---
 cmake/modules/FindTBB.cmake.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cmake/modules/FindTBB.cmake.in b/cmake/modules/FindTBB.cmake.in
index a7eafa545..49e405c18 100644
--- a/cmake/modules/FindTBB.cmake.in
+++ b/cmake/modules/FindTBB.cmake.in
@@ -293,7 +293,7 @@ if(NOT TBB_FOUND)
   # Create targets
   ##################################
 
-  if(NOT CMAKE_VERSION VERSION_LESS 3.0 AND TBB_FOUND)
+  if(NOT CMAKE_VERSION VERSION_LESS 3.0 AND TBB_FOUND AND NOT TARGET TBB::tbb)
     add_library(TBB::tbb UNKNOWN IMPORTED)
     set_target_properties(TBB::tbb PROPERTIES
           INTERFACE_COMPILE_DEFINITIONS "${TBB_DEFINITIONS}"