From 472f3b734736347a6824780aa25a8119a843e05b Mon Sep 17 00:00:00 2001
From: Maksim Shabunin <maksim.shabunin@gmail.com>
Date: Fri, 24 May 2019 18:29:29 +0300
Subject: [PATCH] Fix TBB debug

---
 cmake/OpenCVDetectTBB.cmake | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/cmake/OpenCVDetectTBB.cmake b/cmake/OpenCVDetectTBB.cmake
index 403b446116..38137f44f0 100644
--- a/cmake/OpenCVDetectTBB.cmake
+++ b/cmake/OpenCVDetectTBB.cmake
@@ -70,9 +70,13 @@ function(ocv_tbb_env_guess _found)
     add_library(tbb UNKNOWN IMPORTED)
     set_target_properties(tbb PROPERTIES
       IMPORTED_LOCATION "${TBB_ENV_LIB}"
-      IMPORTED_LOCATION_DEBUG "${TBB_ENV_LIB_DEBUG}"
       INTERFACE_INCLUDE_DIRECTORIES "${TBB_ENV_INCLUDE}"
     )
+    if (TBB_ENV_LIB_DEBUG)
+      set_target_properties(tbb PROPERTIES
+        IMPORTED_LOCATION_DEBUG "${TBB_ENV_LIB_DEBUG}"
+      )
+    endif()
     # workaround: system TBB library is used for linking instead of provided
     if(CV_GCC)
       get_filename_component(_dir "${TBB_ENV_LIB}" DIRECTORY)