Use compile option -fno-strict-aliasing to prevent breaking optimizat…

…ions due to using reinterpret_cast

CMakeLists.txt

@@ -63,6 +63,7 @@ function( vulkan_hpp__setup_platform )
 	else()
 		message( FATAL_ERROR, "Vulkan-Hpp: unhandled platform!" )
 	endif()
+	target_compile_options( ${TARGET_NAME} PRIVATE -fno-strict-aliasing )
 endfunction()
 
 function( vulkan_hpp__setup_vulkan_include )

README.md

@@ -846,6 +846,10 @@ Currently, there are just a couple of such defines:
 - `VULKAN_HPP_NO_TO_STRING`, which removes the various `vk::to_string` functions on enums and bitmasks.
 - `VULKAN_HPP_USE_REFLECT`, this one needs to be defined to use the reflection function on structures. It's very slow to compile, though!
 
+### Strict aliasing issue
+
+As Vulkan-Hpp often needs to switch between C++ vk-types and corresponding bit-identical C-types, using `reinterpret_cast`, it is highly recommended to use the compile option `-fno-strict-aliasing` to prevent potentially breaking compile optimizations.
+
 ## Configuration Options
 
 There are a couple of defines you can use to control the feature set and behaviour of `vulkan.hpp`: