From d023f316ac281d287a230816a4bac7bc13d1a9de Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Mon, 4 Oct 2021 14:42:08 +0200
Subject: [PATCH] fix OPENCV_DISABLE_THREAD_SUPPORT

Message was,
  CMake Error at CMakeLists.txt:1475 (message):
    Not all parallel frameworks have been disabled (using Concurrency).
---
 cmake/OpenCVFindFrameworks.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cmake/OpenCVFindFrameworks.cmake b/cmake/OpenCVFindFrameworks.cmake
index 9d673f2697..19f6d66340 100644
--- a/cmake/OpenCVFindFrameworks.cmake
+++ b/cmake/OpenCVFindFrameworks.cmake
@@ -17,7 +17,7 @@ else()
 endif()
 
 # --- Concurrency ---
-if(MSVC AND NOT HAVE_TBB)
+if(MSVC AND NOT HAVE_TBB AND NOT OPENCV_DISABLE_THREAD_SUPPORT)
   set(_fname "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/concurrencytest.cpp")
   file(WRITE "${_fname}" "#if _MSC_VER < 1600\n#error\n#endif\nint main() { return 0; }\n")
   try_compile(HAVE_CONCURRENCY "${CMAKE_BINARY_DIR}" "${_fname}")