From 0dc50adf7b6c55431a8915b4cd033bd4375ad0a0 Mon Sep 17 00:00:00 2001
From: Fabio Baltieri <fabiobaltieri@google.com>
Date: Thu, 12 Dec 2024 16:21:44 +0000
Subject: [PATCH] unittest: add COMPILER_WARNINGS_AS_ERRORS handling

Add a check to set the warnings_as_errors flags in unit tests if
CONFIG_COMPILER_WARNINGS_AS_ERRORS is specified, this should catch
warnings in unit test twister runs.

Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
---
 cmake/modules/unittest.cmake | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cmake/modules/unittest.cmake b/cmake/modules/unittest.cmake
index 6565e89aec53a77..eac854bb32698b3 100644
--- a/cmake/modules/unittest.cmake
+++ b/cmake/modules/unittest.cmake
@@ -130,6 +130,10 @@ if(CONFIG_COVERAGE)
   target_link_libraries(testbinary PRIVATE $<TARGET_PROPERTY:linker,coverage>)
 endif()
 
+if (CONFIG_COMPILER_WARNINGS_AS_ERRORS)
+  target_compile_options(test_interface INTERFACE $<TARGET_PROPERTY:compiler,warnings_as_errors>)
+endif()
+
 if(LIBS)
   message(FATAL_ERROR "This variable is not supported, see SOURCES instead")
 endif()