diff -r -U3 web/ftpcopy-0.6.7/src/readwrite.h web1/ftpcopy-0.6.7/src/readwrite.h
--- a/src/readwrite.h	2002-07-14 20:28:42.000000000 +0000
+++ a/src/readwrite.h	2019-01-02 20:08:30.940117065 +0000
@@ -3,8 +3,5 @@
  */
 #ifndef READWRITE_H
 #define READWRITE_H
-
-extern int read(int, char *,unsigned int);
-extern int write(int, const char *,unsigned int);
-
+#include <unistd.h>
 #endif