--- a/tparam.c	2002-02-25 14:37:24.000000000 -0300
+++ b/tparam.c	2024-02-06 16:26:17.200098056 -0300
@@ -33,6 +33,8 @@
 char *realloc ();
 #endif
 
+#include <unistd.h>
+
 /* Do this after the include, in case string.h prototypes bcopy.  */
 #if (defined(HAVE_STRING_H) || defined(STDC_HEADERS)) && !defined(bcopy)
 #define bcopy(s, d, n) memcpy ((d), (s), (n))