Make all available warnings be treated as errors

Author: TheAssassin

CMakeLists.txt

@@ -4,6 +4,12 @@ project(linuxdeploy-plugin-appimage)
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
+# can be enabled globally, we do not expose any libraries
+set(flags "-Wall -Wextra -Werror")
+mark_as_advanced(flags)
+set(CMAKE_C_FLAGS ${flags})
+set(CMAKE_CXX_FLAGS ${flags})
+
 add_subdirectory(lib)
 
 add_subdirectory(src)