*** test/cspice/src/cspice/inquire.c	Sat Apr  8 05:10:07 2017
--- spice/cspice/src/cspice/inquire.c	Wed Apr  7 22:18:57 2021
***************
*** 1,6 ****
--- 1,7 ----
  #include "f2c.h"
  #include "fio.h"
  #include "string.h"
+ #include <unistd.h>
  #ifdef KR_headers
  integer f_inqu(a) inlist *a;
  #else