+
+# if defined (__MMX__)
+# define VLC_MMX
+# elif VLC_GCC_VERSION(4, 4)
+# define VLC_MMX __attribute__ ((__target__ ("mmx")))
+# else
+# define VLC_MMX VLC_MMX_is_not_implemented_on_this_compiler
+# endif
+
+# if defined (__SSE__)
+# define VLC_SSE
+# elif VLC_GCC_VERSION(4, 4)
+# define VLC_SSE __attribute__ ((__target__ ("sse")))
+# else
+# define VLC_SSE VLC_SSE_is_not_implemented_on_this_compiler
+# endif
+