#ifndef SYSTEM_MALLOC
real_morecore = __morecore;
__morecore = r_alloc_sbrk;
-#endif
-#ifndef REL_ALLOC_MMAP
first_heap = last_heap = &heap_base;
first_heap->next = first_heap->prev = NIL_HEAP;
first_heap->start = first_heap->bloc_start
#endif
#endif
-#ifndef REL_ALLOC_MMAP
+#ifndef SYSTEM_MALLOC
first_heap->end = (POINTER) ROUNDUP (first_heap->start);
/* The extra call to real_morecore guarantees that the end of the