From 30ec7fa9010f63d50f1e45df51ae2512625ec8ee Mon Sep 17 00:00:00 2001
From: Hugues Kamba <hugues.kamba@arm.com>
Date: Mon, 7 Sep 2020 12:35:11 +0100
Subject: [PATCH] CMake: mbed_add_cmake_directory_if_labels checks presence of
 CMakeLists.txt before adding subdirectory

---
 cmake/util.cmake | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/cmake/util.cmake b/cmake/util.cmake
index ff954b7a4e..1414421aa0 100644
--- a/cmake/util.cmake
+++ b/cmake/util.cmake
@@ -11,7 +11,9 @@ function(mbed_add_cmake_directory_if_labels PREFIX)
         # assumption: relative path, no need to check for absolute here
         set(path ${CMAKE_CURRENT_SOURCE_DIR}/${key})
         if (EXISTS ${path})
-            add_subdirectory(${path})
+            if (EXISTS  "${path}/CMakeLists.txt")
+                add_subdirectory(${path})
+            endif()
         endif()
     endforeach()
 endfunction()