From a1825980c496eb100e719a918ab2cc9f96389f52 Mon Sep 17 00:00:00 2001
From: Evil Eye <malusluminis@hotmail.com>
Date: Wed, 6 Oct 2021 17:28:48 +0200
Subject: [PATCH] Define OpenMW specific C++ flags

---
 CI/before_script.linux.sh | 1 +
 CMakeLists.txt            | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/CI/before_script.linux.sh b/CI/before_script.linux.sh
index bc0eb0013d..5d20fa75ce 100755
--- a/CI/before_script.linux.sh
+++ b/CI/before_script.linux.sh
@@ -32,6 +32,7 @@ declare -a CMAKE_CONF_OPTS=(
     -DCMAKE_INSTALL_PREFIX=install
     -DCMAKE_C_FLAGS='-Werror'
     -DCMAKE_CXX_FLAGS="${CXX_FLAGS}"
+    -DOPENMW_CXX_FLAGS="-Werror=implicit-fallthrough"
 )
 
 if [[ $CI_OPENMW_USE_STATIC_DEPS ]]; then
diff --git a/CMakeLists.txt b/CMakeLists.txt
index ae4584a4cd..2564379847 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -543,8 +543,8 @@ if (BUILD_OPENCS)
     add_subdirectory (extern/osgQt)
 endif()
 
-if (CMAKE_CXX_COMPILER_ID STREQUAL GNU OR CMAKE_CXX_COMPILER_ID STREQUAL Clang)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror=implicit-fallthrough")
+if (OPENMW_CXX_FLAGS)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OPENMW_CXX_FLAGS}")
 endif()
 
 # Components