{$IFDEF Win32}
  {$DEFINE VK_WIN}
  {$DEFINE VK_WIN32}
  {$DEFINE VK_USE_PLATFORM_WIN32_KHR}
{$ENDIF}

{$IFDEF Win64}
  {$DEFINE VK_WIN}
  {$DEFINE VK_WIN64}
  {$DEFINE VK_USE_PLATFORM_WIN32_KHR}
{$ENDIF}

{$IFDEF linux}
  {$DEFINE VK_LINUX}
  {$DEFINE VK_CDECL}
{$ENDIF}

{$IFDEF DARWIN}
  {$DEFINE VK_MAC}
  {$DEFINE VK_CDECL}
{$ENDIF}

{$IF DEFINED(CPU64)}
  {$DEFINE VK_CPU64}
{$ELSEIF DEFINED(CPU32)}
  {$DEFINE VK_CPU32}
{$ELSEIF DEFINED(CPU16)}
  {$DEFINE VK_CPU16}
{$ENDIF}