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The C and C++ Include Header Files

cat -n /usr/include/X11/dri/xf86dristr.h

     1	#warning "xf86dristr.h is obsolete and may be removed in the future."
     2	#warning "include <X11/dri/xf86driproto.h> for the protocol defines."
     3	#include <X11/dri/xf86driproto.h>