-#include "lisp.h" /* Needed for VALBITS. */
-#include "blockinput.h"
-
-#include <unistd.h>
-
-#ifdef DOUG_LEA_MALLOC
-#define M_TOP_PAD -2
-extern int mallopt (int, int);
-#else /* not DOUG_LEA_MALLOC */
-#if !defined SYSTEM_MALLOC && !defined HYBRID_MALLOC
-extern size_t __malloc_extra_blocks;
-#endif /* not SYSTEM_MALLOC and not HYBRID_MALLOC */
-#endif /* not DOUG_LEA_MALLOC */
-
-#else /* not emacs */
-