fix warnings.

packages/PLStream/pl-tai.c

@@ -117,7 +117,7 @@ tz_offset() returns the offset from UTC in seconds.
 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
 
 static void
-do_tzset()
+do_tzset(void)
 { static int done = FALSE;
 
   if ( !done )
@@ -135,7 +135,7 @@ value is EAST and includes the DST offset.
 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
 
 static int
-tz_offset()
+tz_offset(void)
 {
 #ifdef HAVE_VAR_TIMEZONE
   do_tzset();
@@ -346,7 +346,7 @@ get_ftm(term_t t, ftm *ftm)
     compute missing fields from fmt
 */
 
-void
+static void
 cal_ftm(ftm *ftm, int required)
 { int missing = ftm->flags^required;
 

packages/PLStream/pl-yap.c

@@ -1092,10 +1092,12 @@ Yap_fetch_module_for_format(term_t args, YAP_Term *modp) {
   return YAP_InitSlot(nt);
 }
 
+extern word pl_readline(term_t flag);
+
 word
 pl_readline(term_t flag)
 {
-  
+  return 0;
 }
 
 static Term
@@ -1111,6 +1113,8 @@ StreamPosition(IOSTREAM *st)
   return Yap_MkApplTerm(FunctorStreamPos,4,t);
 }
 
+extern Term Yap_StreamPosition(IOSTREAM *st);
+
 Term
 Yap_StreamPosition(IOSTREAM *st)
 {