From 56dcafece8e3282c492c6004b948fde032bd61d7 Mon Sep 17 00:00:00 2001
From: Fabio Baltieri <fabiobaltieri@google.com>
Date: Fri, 13 Sep 2024 19:59:40 +0000
Subject: [PATCH] cmake: use the warnings_as_errors flag for cpp files

C++ file compilation is actually missing the warning-as-error handling,
causing warnings in build files to be unnoticed in CI. Add a flag to
handle them as well.

Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
---
 CMakeLists.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 952acccbba8..d01529f496d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -152,6 +152,7 @@ zephyr_compile_options($<$<COMPILE_LANGUAGE:CXX>:$<TARGET_PROPERTY:compiler-cpp,
 # Extra warnings options for twister run
 if (CONFIG_COMPILER_WARNINGS_AS_ERRORS)
   zephyr_compile_options($<$<COMPILE_LANGUAGE:C>:$<TARGET_PROPERTY:compiler,warnings_as_errors>>)
+  zephyr_compile_options($<$<COMPILE_LANGUAGE:CXX>:$<TARGET_PROPERTY:compiler,warnings_as_errors>>)
   zephyr_compile_options($<$<COMPILE_LANGUAGE:ASM>:$<TARGET_PROPERTY:asm,warnings_as_errors>>)
   zephyr_link_libraries($<TARGET_PROPERTY:linker,warnings_as_errors>)
 endif()