* unix/configure:

	* unix/tcl.m4 (SC_SERIAL_PORT): added sys/modem.h check and defined
	_XOPEN_SOURCE_EXTENDED for HP-11 to get updated header decls.

2 files changed, 297 insertions, 248 deletions

diff --git a/unix/configure b/unix/configure
index 5f29f1a..b3656ec 100755
--- a/unix/configure
+++ b/unix/configure
@@ -2031,11 +2031,10 @@ fi
 #--------------------------------------------------------------------
 
 
-
     echo $ac_n "checking dirent.h""... $ac_c" 1>&6
-echo "configure:2037: checking dirent.h" >&5
+echo "configure:2036: checking dirent.h" >&5
     cat > conftest.$ac_ext <<EOF
-#line 2039 "configure"
+#line 2038 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <dirent.h>
@@ -2061,7 +2060,7 @@ closedir(d);
 
 ; return 0; }
 EOF
-if { (eval echo configure:2065: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2064: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_ok=yes
 else
@@ -2082,17 +2081,17 @@ EOF
     echo "$ac_t""$tcl_ok" 1>&6
     ac_safe=`echo "errno.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for errno.h""... $ac_c" 1>&6
-echo "configure:2086: checking for errno.h" >&5
+echo "configure:2085: checking for errno.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2091 "configure"
+#line 2090 "configure"
 #include "confdefs.h"
 #include <errno.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2096: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2095: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2119,17 +2118,17 @@ fi
 
     ac_safe=`echo "float.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for float.h""... $ac_c" 1>&6
-echo "configure:2123: checking for float.h" >&5
+echo "configure:2122: checking for float.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2128 "configure"
+#line 2127 "configure"
 #include "confdefs.h"
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2133: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2132: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2156,17 +2155,17 @@ fi
 
     ac_safe=`echo "values.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for values.h""... $ac_c" 1>&6
-echo "configure:2160: checking for values.h" >&5
+echo "configure:2159: checking for values.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2165 "configure"
+#line 2164 "configure"
 #include "confdefs.h"
 #include <values.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2170: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2169: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2193,17 +2192,17 @@ fi
 
     ac_safe=`echo "limits.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for limits.h""... $ac_c" 1>&6
-echo "configure:2197: checking for limits.h" >&5
+echo "configure:2196: checking for limits.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2202 "configure"
+#line 2201 "configure"
 #include "confdefs.h"
 #include <limits.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2207: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2206: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2230,17 +2229,17 @@ fi
 
     ac_safe=`echo "stdlib.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for stdlib.h""... $ac_c" 1>&6
-echo "configure:2234: checking for stdlib.h" >&5
+echo "configure:2233: checking for stdlib.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2239 "configure"
+#line 2238 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2244: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2243: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2263,7 +2262,7 @@ tcl_ok=0
 fi
 
     cat > conftest.$ac_ext <<EOF
-#line 2267 "configure"
+#line 2266 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -2277,7 +2276,7 @@ fi
 rm -f conftest*
 
     cat > conftest.$ac_ext <<EOF
-#line 2281 "configure"
+#line 2280 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -2291,7 +2290,7 @@ fi
 rm -f conftest*
 
     cat > conftest.$ac_ext <<EOF
-#line 2295 "configure"
+#line 2294 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -2312,17 +2311,17 @@ EOF
     fi
     ac_safe=`echo "string.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for string.h""... $ac_c" 1>&6
-echo "configure:2316: checking for string.h" >&5
+echo "configure:2315: checking for string.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2321 "configure"
+#line 2320 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2326: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2325: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2345,7 +2344,7 @@ tcl_ok=0
 fi
 
     cat > conftest.$ac_ext <<EOF
-#line 2349 "configure"
+#line 2348 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -2359,7 +2358,7 @@ fi
 rm -f conftest*
 
     cat > conftest.$ac_ext <<EOF
-#line 2363 "configure"
+#line 2362 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -2385,17 +2384,17 @@ EOF
 
     ac_safe=`echo "sys/wait.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for sys/wait.h""... $ac_c" 1>&6
-echo "configure:2389: checking for sys/wait.h" >&5
+echo "configure:2388: checking for sys/wait.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2394 "configure"
+#line 2393 "configure"
 #include "confdefs.h"
 #include <sys/wait.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2399: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2398: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2422,17 +2421,17 @@ fi
 
     ac_safe=`echo "dlfcn.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for dlfcn.h""... $ac_c" 1>&6
-echo "configure:2426: checking for dlfcn.h" >&5
+echo "configure:2425: checking for dlfcn.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2431 "configure"
+#line 2430 "configure"
 #include "confdefs.h"
 #include <dlfcn.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2436: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2435: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2464,17 +2463,17 @@ fi
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:2468: checking for $ac_hdr" >&5
+echo "configure:2467: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2473 "configure"
+#line 2472 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2478: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2477: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2510,8 +2509,48 @@ done
 #---------------------------------------------------------------------------
 
 
+    for ac_hdr in sys/modem.h
+do
+ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
+echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
+echo "configure:2517: checking for $ac_hdr" >&5
+if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2522 "configure"
+#include "confdefs.h"
+#include <$ac_hdr>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:2527: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+  rm -rf conftest*
+  eval "ac_cv_header_$ac_safe=yes"
+else
+  echo "$ac_err" >&5
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_header_$ac_safe=no"
+fi
+rm -f conftest*
+fi
+if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_hdr 1
+EOF
+ 
+else
+  echo "$ac_t""no" 1>&6
+fi
+done
+
     echo $ac_n "checking termios vs. termio vs. sgtty""... $ac_c" 1>&6
-echo "configure:2515: checking termios vs. termio vs. sgtty" >&5
+echo "configure:2554: checking termios vs. termio vs. sgtty" >&5
     if eval "test \"`echo '$''{'tcl_cv_api_serial'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2520,7 +2559,7 @@ else
   tcl_cv_api_serial=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 2524 "configure"
+#line 2563 "configure"
 #include "confdefs.h"
 
 #include <termios.h>
@@ -2535,7 +2574,7 @@ int main() {
     return 1;
 }
 EOF
-if { (eval echo configure:2539: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2578: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_cv_api_serial=termios
 else
@@ -2552,7 +2591,7 @@ fi
   tcl_cv_api_serial=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 2556 "configure"
+#line 2595 "configure"
 #include "confdefs.h"
 
 #include <termio.h>
@@ -2566,7 +2605,7 @@ int main() {
     return 1;
 }
 EOF
-if { (eval echo configure:2570: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2609: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_cv_api_serial=termio
 else
@@ -2584,7 +2623,7 @@ fi
   tcl_cv_api_serial=none
 else
   cat > conftest.$ac_ext <<EOF
-#line 2588 "configure"
+#line 2627 "configure"
 #include "confdefs.h"
 
 #include <sgtty.h>
@@ -2599,7 +2638,7 @@ int main() {
     return 1;
 }
 EOF
-if { (eval echo configure:2603: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2642: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_cv_api_serial=sgtty
 else
@@ -2617,7 +2656,7 @@ fi
   tcl_cv_api_serial=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 2621 "configure"
+#line 2660 "configure"
 #include "confdefs.h"
 
 #include <termios.h>
@@ -2634,7 +2673,7 @@ int main() {
     return 1;
 }
 EOF
-if { (eval echo configure:2638: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2677: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_cv_api_serial=termios
 else
@@ -2652,7 +2691,7 @@ fi
   tcl_cv_api_serial=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 2656 "configure"
+#line 2695 "configure"
 #include "confdefs.h"
 
 #include <termio.h>
@@ -2668,7 +2707,7 @@ int main() {
     return 1;
     }
 EOF
-if { (eval echo configure:2672: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2711: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_cv_api_serial=termio
 else
@@ -2686,7 +2725,7 @@ fi
   tcl_cv_api_serial=none
 else
   cat > conftest.$ac_ext <<EOF
-#line 2690 "configure"
+#line 2729 "configure"
 #include "confdefs.h"
 
 #include <sgtty.h>
@@ -2703,7 +2742,7 @@ int main() {
     return 1;
 }
 EOF
-if { (eval echo configure:2707: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2746: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_cv_api_serial=sgtty
 else
@@ -2746,19 +2785,19 @@ EOF
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for fd_set in sys/types""... $ac_c" 1>&6
-echo "configure:2750: checking for fd_set in sys/types" >&5
+echo "configure:2789: checking for fd_set in sys/types" >&5
 if eval "test \"`echo '$''{'tcl_cv_type_fd_set'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2755 "configure"
+#line 2794 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 int main() {
 fd_set readMask, writeMask;
 ; return 0; }
 EOF
-if { (eval echo configure:2762: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2801: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_type_fd_set=yes
 else
@@ -2774,12 +2813,12 @@ echo "$ac_t""$tcl_cv_type_fd_set" 1>&6
 tk_ok=$tcl_cv_type_fd_set
 if test $tcl_cv_type_fd_set = no; then
     echo $ac_n "checking for fd_mask in sys/select""... $ac_c" 1>&6
-echo "configure:2778: checking for fd_mask in sys/select" >&5
+echo "configure:2817: checking for fd_mask in sys/select" >&5
     if eval "test \"`echo '$''{'tcl_cv_grep_fd_mask'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2783 "configure"
+#line 2822 "configure"
 #include "confdefs.h"
 #include <sys/select.h>
 EOF
@@ -2816,12 +2855,12 @@ fi
 #------------------------------------------------------------------------------
 
 echo $ac_n "checking whether struct tm is in sys/time.h or time.h""... $ac_c" 1>&6
-echo "configure:2820: checking whether struct tm is in sys/time.h or time.h" >&5
+echo "configure:2859: checking whether struct tm is in sys/time.h or time.h" >&5
 if eval "test \"`echo '$''{'ac_cv_struct_tm'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2825 "configure"
+#line 2864 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <time.h>
@@ -2829,7 +2868,7 @@ int main() {
 struct tm *tp; tp->tm_sec;
 ; return 0; }
 EOF
-if { (eval echo configure:2833: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2872: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_struct_tm=time.h
 else
@@ -2854,17 +2893,17 @@ fi
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:2858: checking for $ac_hdr" >&5
+echo "configure:2897: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2863 "configure"
+#line 2902 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2868: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2907: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2891,12 +2930,12 @@ fi
 done
 
     echo $ac_n "checking whether time.h and sys/time.h may both be included""... $ac_c" 1>&6
-echo "configure:2895: checking whether time.h and sys/time.h may both be included" >&5
+echo "configure:2934: checking whether time.h and sys/time.h may both be included" >&5
 if eval "test \"`echo '$''{'ac_cv_header_time'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2900 "configure"
+#line 2939 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/time.h>
@@ -2905,7 +2944,7 @@ int main() {
 struct tm *tp;
 ; return 0; }
 EOF
-if { (eval echo configure:2909: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2948: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_header_time=yes
 else
@@ -2926,12 +2965,12 @@ EOF
 fi
 
     echo $ac_n "checking for tm_zone in struct tm""... $ac_c" 1>&6
-echo "configure:2930: checking for tm_zone in struct tm" >&5
+echo "configure:2969: checking for tm_zone in struct tm" >&5
 if eval "test \"`echo '$''{'ac_cv_struct_tm_zone'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2935 "configure"
+#line 2974 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <$ac_cv_struct_tm>
@@ -2939,7 +2978,7 @@ int main() {
 struct tm tm; tm.tm_zone;
 ; return 0; }
 EOF
-if { (eval echo configure:2943: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2982: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_struct_tm_zone=yes
 else
@@ -2959,12 +2998,12 @@ EOF
 
 else
   echo $ac_n "checking for tzname""... $ac_c" 1>&6
-echo "configure:2963: checking for tzname" >&5
+echo "configure:3002: checking for tzname" >&5
 if eval "test \"`echo '$''{'ac_cv_var_tzname'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2968 "configure"
+#line 3007 "configure"
 #include "confdefs.h"
 #include <time.h>
 #ifndef tzname /* For SGI.  */
@@ -2974,7 +3013,7 @@ int main() {
 atoi(*tzname);
 ; return 0; }
 EOF
-if { (eval echo configure:2978: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3017: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   ac_cv_var_tzname=yes
 else
@@ -2999,12 +3038,12 @@ fi
     for ac_func in gmtime_r localtime_r
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:3003: checking for $ac_func" >&5
+echo "configure:3042: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3008 "configure"
+#line 3047 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -3027,7 +3066,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:3031: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3070: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -3053,19 +3092,19 @@ done
 
 
     echo $ac_n "checking tm_tzadj in struct tm""... $ac_c" 1>&6
-echo "configure:3057: checking tm_tzadj in struct tm" >&5
+echo "configure:3096: checking tm_tzadj in struct tm" >&5
     if eval "test \"`echo '$''{'tcl_cv_member_tm_tzadj'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3062 "configure"
+#line 3101 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
 struct tm tm; tm.tm_tzadj;
 ; return 0; }
 EOF
-if { (eval echo configure:3069: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3108: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_member_tm_tzadj=yes
 else
@@ -3086,19 +3125,19 @@ EOF
     fi
 
     echo $ac_n "checking tm_gmtoff in struct tm""... $ac_c" 1>&6
-echo "configure:3090: checking tm_gmtoff in struct tm" >&5
+echo "configure:3129: checking tm_gmtoff in struct tm" >&5
     if eval "test \"`echo '$''{'tcl_cv_member_tm_gmtoff'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3095 "configure"
+#line 3134 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
 struct tm tm; tm.tm_gmtoff;
 ; return 0; }
 EOF
-if { (eval echo configure:3102: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3141: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_member_tm_gmtoff=yes
 else
@@ -3123,12 +3162,12 @@ EOF
     # (like convex) have timezone functions, etc.
     #
     echo $ac_n "checking long timezone variable""... $ac_c" 1>&6
-echo "configure:3127: checking long timezone variable" >&5
+echo "configure:3166: checking long timezone variable" >&5
     if eval "test \"`echo '$''{'tcl_cv_var_timezone'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3132 "configure"
+#line 3171 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
@@ -3137,7 +3176,7 @@ extern long timezone;
 	    exit (0);
 ; return 0; }
 EOF
-if { (eval echo configure:3141: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3180: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_timezone_long=yes
 else
@@ -3160,12 +3199,12 @@ EOF
 	# On some systems (eg IRIX 6.2), timezone is a time_t and not a long.
 	#
 	echo $ac_n "checking time_t timezone variable""... $ac_c" 1>&6
-echo "configure:3164: checking time_t timezone variable" >&5
+echo "configure:3203: checking time_t timezone variable" >&5
 	if eval "test \"`echo '$''{'tcl_cv_timezone_time'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3169 "configure"
+#line 3208 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
@@ -3174,7 +3213,7 @@ extern time_t timezone;
 		exit (0);
 ; return 0; }
 EOF
-if { (eval echo configure:3178: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3217: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_timezone_time=yes
 else
@@ -3201,12 +3240,12 @@ EOF
 #	in struct stat.  But we might be able to use fstatfs instead.
 #--------------------------------------------------------------------
 echo $ac_n "checking for st_blksize in struct stat""... $ac_c" 1>&6
-echo "configure:3205: checking for st_blksize in struct stat" >&5
+echo "configure:3244: checking for st_blksize in struct stat" >&5
 if eval "test \"`echo '$''{'ac_cv_struct_st_blksize'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3210 "configure"
+#line 3249 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -3214,7 +3253,7 @@ int main() {
 struct stat s; s.st_blksize;
 ; return 0; }
 EOF
-if { (eval echo configure:3218: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3257: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_struct_st_blksize=yes
 else
@@ -3235,12 +3274,12 @@ EOF
 fi
 
 echo $ac_n "checking for fstatfs""... $ac_c" 1>&6
-echo "configure:3239: checking for fstatfs" >&5
+echo "configure:3278: checking for fstatfs" >&5
 if eval "test \"`echo '$''{'ac_cv_func_fstatfs'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3244 "configure"
+#line 3283 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char fstatfs(); below.  */
@@ -3263,7 +3302,7 @@ fstatfs();
 
 ; return 0; }
 EOF
-if { (eval echo configure:3267: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3306: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_fstatfs=yes"
 else
@@ -3292,7 +3331,7 @@ fi
 #       data, this checks it and add memcmp.o to LIBOBJS if needed
 #--------------------------------------------------------------------
 echo $ac_n "checking for 8-bit clean memcmp""... $ac_c" 1>&6
-echo "configure:3296: checking for 8-bit clean memcmp" >&5
+echo "configure:3335: checking for 8-bit clean memcmp" >&5
 if eval "test \"`echo '$''{'ac_cv_func_memcmp_clean'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3300,7 +3339,7 @@ else
   ac_cv_func_memcmp_clean=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 3304 "configure"
+#line 3343 "configure"
 #include "confdefs.h"
 
 main()
@@ -3310,7 +3349,7 @@ main()
 }
 
 EOF
-if { (eval echo configure:3314: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:3353: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_func_memcmp_clean=yes
 else
@@ -3334,12 +3373,12 @@ test $ac_cv_func_memcmp_clean = no && LIBOBJS="$LIBOBJS memcmp.${ac_objext}"
 #       {The replacement define is in compat/string.h}
 #--------------------------------------------------------------------
 echo $ac_n "checking for memmove""... $ac_c" 1>&6
-echo "configure:3338: checking for memmove" >&5
+echo "configure:3377: checking for memmove" >&5
 if eval "test \"`echo '$''{'ac_cv_func_memmove'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3343 "configure"
+#line 3382 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char memmove(); below.  */
@@ -3362,7 +3401,7 @@ memmove();
 
 ; return 0; }
 EOF
-if { (eval echo configure:3366: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3405: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_memmove=yes"
 else
@@ -3395,12 +3434,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking proper strstr implementation""... $ac_c" 1>&6
-echo "configure:3399: checking proper strstr implementation" >&5
+echo "configure:3438: checking proper strstr implementation" >&5
 if test "$cross_compiling" = yes; then
   tcl_ok=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 3404 "configure"
+#line 3443 "configure"
 #include "confdefs.h"
 
 extern int strstr();
@@ -3410,7 +3449,7 @@ int main()
 }
 
 EOF
-if { (eval echo configure:3414: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:3453: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_ok=yes
 else
@@ -3436,12 +3475,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for strtoul""... $ac_c" 1>&6
-echo "configure:3440: checking for strtoul" >&5
+echo "configure:3479: checking for strtoul" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strtoul'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3445 "configure"
+#line 3484 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strtoul(); below.  */
@@ -3464,7 +3503,7 @@ strtoul();
 
 ; return 0; }
 EOF
-if { (eval echo configure:3468: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3507: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_strtoul=yes"
 else
@@ -3488,7 +3527,7 @@ if test "$cross_compiling" = yes; then
   tcl_ok=0
 else
   cat > conftest.$ac_ext <<EOF
-#line 3492 "configure"
+#line 3531 "configure"
 #include "confdefs.h"
 
 extern int strtoul();
@@ -3504,7 +3543,7 @@ int main()
     exit(0);
 }
 EOF
-if { (eval echo configure:3508: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:3547: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -3527,12 +3566,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for strtod""... $ac_c" 1>&6
-echo "configure:3531: checking for strtod" >&5
+echo "configure:3570: checking for strtod" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strtod'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3536 "configure"
+#line 3575 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strtod(); below.  */
@@ -3555,7 +3594,7 @@ strtod();
 
 ; return 0; }
 EOF
-if { (eval echo configure:3559: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3598: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_strtod=yes"
 else
@@ -3579,7 +3618,7 @@ if test "$cross_compiling" = yes; then
   tcl_ok=0
 else
   cat > conftest.$ac_ext <<EOF
-#line 3583 "configure"
+#line 3622 "configure"
 #include "confdefs.h"
 
 extern double strtod();
@@ -3595,7 +3634,7 @@ int main()
     exit(0);
 }
 EOF
-if { (eval echo configure:3599: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:3638: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -3621,12 +3660,12 @@ fi
 
 
     echo $ac_n "checking for strtod""... $ac_c" 1>&6
-echo "configure:3625: checking for strtod" >&5
+echo "configure:3664: checking for strtod" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strtod'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3630 "configure"
+#line 3669 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strtod(); below.  */
@@ -3649,7 +3688,7 @@ strtod();
 
 ; return 0; }
 EOF
-if { (eval echo configure:3653: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3692: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_strtod=yes"
 else
@@ -3671,12 +3710,12 @@ fi
 
     if test "$tcl_strtod" = 1; then
 	echo $ac_n "checking for Solaris2.4/Tru64 strtod bugs""... $ac_c" 1>&6
-echo "configure:3675: checking for Solaris2.4/Tru64 strtod bugs" >&5
+echo "configure:3714: checking for Solaris2.4/Tru64 strtod bugs" >&5
 	if test "$cross_compiling" = yes; then
   tcl_ok=0
 else
   cat > conftest.$ac_ext <<EOF
-#line 3680 "configure"
+#line 3719 "configure"
 #include "confdefs.h"
 
 	    extern double strtod();
@@ -3696,7 +3735,7 @@ else
 		exit(0);
 	    }
 EOF
-if { (eval echo configure:3700: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:3739: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_ok=1
 else
@@ -3727,12 +3766,12 @@ EOF
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for ANSI C header files""... $ac_c" 1>&6
-echo "configure:3731: checking for ANSI C header files" >&5
+echo "configure:3770: checking for ANSI C header files" >&5
 if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3736 "configure"
+#line 3775 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <stdarg.h>
@@ -3740,7 +3779,7 @@ else
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:3744: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:3783: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -3757,7 +3796,7 @@ rm -f conftest*
 if test $ac_cv_header_stdc = yes; then
   # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 3761 "configure"
+#line 3800 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -3775,7 +3814,7 @@ fi
 if test $ac_cv_header_stdc = yes; then
   # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 3779 "configure"
+#line 3818 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -3796,7 +3835,7 @@ if test "$cross_compiling" = yes; then
   :
 else
   cat > conftest.$ac_ext <<EOF
-#line 3800 "configure"
+#line 3839 "configure"
 #include "confdefs.h"
 #include <ctype.h>
 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
@@ -3807,7 +3846,7 @@ if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
 exit (0); }
 
 EOF
-if { (eval echo configure:3811: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:3850: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -3831,12 +3870,12 @@ EOF
 fi
 
 echo $ac_n "checking for mode_t""... $ac_c" 1>&6
-echo "configure:3835: checking for mode_t" >&5
+echo "configure:3874: checking for mode_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_mode_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3840 "configure"
+#line 3879 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -3864,12 +3903,12 @@ EOF
 fi
 
 echo $ac_n "checking for pid_t""... $ac_c" 1>&6
-echo "configure:3868: checking for pid_t" >&5
+echo "configure:3907: checking for pid_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_pid_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3873 "configure"
+#line 3912 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -3897,12 +3936,12 @@ EOF
 fi
 
 echo $ac_n "checking for size_t""... $ac_c" 1>&6
-echo "configure:3901: checking for size_t" >&5
+echo "configure:3940: checking for size_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_size_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3906 "configure"
+#line 3945 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -3930,12 +3969,12 @@ EOF
 fi
 
 echo $ac_n "checking for uid_t in sys/types.h""... $ac_c" 1>&6
-echo "configure:3934: checking for uid_t in sys/types.h" >&5
+echo "configure:3973: checking for uid_t in sys/types.h" >&5
 if eval "test \"`echo '$''{'ac_cv_type_uid_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3939 "configure"
+#line 3978 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 EOF
@@ -3972,12 +4011,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for opendir""... $ac_c" 1>&6
-echo "configure:3976: checking for opendir" >&5
+echo "configure:4015: checking for opendir" >&5
 if eval "test \"`echo '$''{'ac_cv_func_opendir'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3981 "configure"
+#line 4020 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char opendir(); below.  */
@@ -4000,7 +4039,7 @@ opendir();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4004: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4043: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_opendir=yes"
 else
@@ -4033,12 +4072,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking union wait""... $ac_c" 1>&6
-echo "configure:4037: checking union wait" >&5
+echo "configure:4076: checking union wait" >&5
 if eval "test \"`echo '$''{'tcl_cv_union_wait'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4042 "configure"
+#line 4081 "configure"
 #include "confdefs.h"
 #include <sys/types.h> 
 #include <sys/wait.h>
@@ -4050,7 +4089,7 @@ WIFEXITED(x);		/* Generates compiler error if WIFEXITED
     
 ; return 0; }
 EOF
-if { (eval echo configure:4054: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4093: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_cv_union_wait=yes
 else
@@ -4076,12 +4115,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking matherr support""... $ac_c" 1>&6
-echo "configure:4080: checking matherr support" >&5
+echo "configure:4119: checking matherr support" >&5
 if eval "test \"`echo '$''{'tcl_cv_func_matherr'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4085 "configure"
+#line 4124 "configure"
 #include "confdefs.h"
 #include <math.h>
 int main() {
@@ -4092,7 +4131,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:4096: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4135: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_func_matherr=yes
 else
@@ -4119,12 +4158,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for strncasecmp""... $ac_c" 1>&6
-echo "configure:4123: checking for strncasecmp" >&5
+echo "configure:4162: checking for strncasecmp" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strncasecmp'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4128 "configure"
+#line 4167 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strncasecmp(); below.  */
@@ -4147,7 +4186,7 @@ strncasecmp();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4151: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4190: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_strncasecmp=yes"
 else
@@ -4169,7 +4208,7 @@ fi
 
 if test "$tcl_ok" = 0; then
     echo $ac_n "checking for strncasecmp in -lsocket""... $ac_c" 1>&6
-echo "configure:4173: checking for strncasecmp in -lsocket" >&5
+echo "configure:4212: checking for strncasecmp in -lsocket" >&5
 ac_lib_var=`echo socket'_'strncasecmp | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -4177,7 +4216,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lsocket  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4181 "configure"
+#line 4220 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -4188,7 +4227,7 @@ int main() {
 strncasecmp()
 ; return 0; }
 EOF
-if { (eval echo configure:4192: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4231: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -4212,7 +4251,7 @@ fi
 fi
 if test "$tcl_ok" = 0; then
     echo $ac_n "checking for strncasecmp in -linet""... $ac_c" 1>&6
-echo "configure:4216: checking for strncasecmp in -linet" >&5
+echo "configure:4255: checking for strncasecmp in -linet" >&5
 ac_lib_var=`echo inet'_'strncasecmp | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -4220,7 +4259,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-linet  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4224 "configure"
+#line 4263 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -4231,7 +4270,7 @@ int main() {
 strncasecmp()
 ; return 0; }
 EOF
-if { (eval echo configure:4235: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4274: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -4269,12 +4308,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for BSDgettimeofday""... $ac_c" 1>&6
-echo "configure:4273: checking for BSDgettimeofday" >&5
+echo "configure:4312: checking for BSDgettimeofday" >&5
 if eval "test \"`echo '$''{'ac_cv_func_BSDgettimeofday'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4278 "configure"
+#line 4317 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char BSDgettimeofday(); below.  */
@@ -4297,7 +4336,7 @@ BSDgettimeofday();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4301: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4340: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_BSDgettimeofday=yes"
 else
@@ -4319,12 +4358,12 @@ else
   echo "$ac_t""no" 1>&6
 
     echo $ac_n "checking for gettimeofday""... $ac_c" 1>&6
-echo "configure:4323: checking for gettimeofday" >&5
+echo "configure:4362: checking for gettimeofday" >&5
 if eval "test \"`echo '$''{'ac_cv_func_gettimeofday'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4328 "configure"
+#line 4367 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char gettimeofday(); below.  */
@@ -4347,7 +4386,7 @@ gettimeofday();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4351: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4390: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_gettimeofday=yes"
 else
@@ -4374,12 +4413,12 @@ fi
 fi
 
 echo $ac_n "checking for gettimeofday declaration""... $ac_c" 1>&6
-echo "configure:4378: checking for gettimeofday declaration" >&5
+echo "configure:4417: checking for gettimeofday declaration" >&5
 if eval "test \"`echo '$''{'tcl_cv_grep_gettimeofday'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4383 "configure"
+#line 4422 "configure"
 #include "confdefs.h"
 #include <sys/time.h>
 EOF
@@ -4410,14 +4449,14 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking whether char is unsigned""... $ac_c" 1>&6
-echo "configure:4414: checking whether char is unsigned" >&5
+echo "configure:4453: checking whether char is unsigned" >&5
 if eval "test \"`echo '$''{'ac_cv_c_char_unsigned'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test "$GCC" = yes; then
   # GCC predefines this symbol on systems where it applies.
 cat > conftest.$ac_ext <<EOF
-#line 4421 "configure"
+#line 4460 "configure"
 #include "confdefs.h"
 #ifdef __CHAR_UNSIGNED__
   yes
@@ -4439,7 +4478,7 @@ if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 4443 "configure"
+#line 4482 "configure"
 #include "confdefs.h"
 /* volatile prevents gcc2 from optimizing the test away on sparcs.  */
 #if !defined(__STDC__) || __STDC__ != 1
@@ -4449,7 +4488,7 @@ main() {
   volatile char c = 255; exit(c < 0);
 }
 EOF
-if { (eval echo configure:4453: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:4492: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_c_char_unsigned=yes
 else
@@ -4473,12 +4512,12 @@ EOF
 fi
 
 echo $ac_n "checking signed char declarations""... $ac_c" 1>&6
-echo "configure:4477: checking signed char declarations" >&5
+echo "configure:4516: checking signed char declarations" >&5
 if eval "test \"`echo '$''{'tcl_cv_char_signed'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4482 "configure"
+#line 4521 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -4488,7 +4527,7 @@ int main() {
 	
 ; return 0; }
 EOF
-if { (eval echo configure:4492: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4531: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_char_signed=yes
 else
@@ -4527,17 +4566,17 @@ fi
 	if test "$langinfo_ok" = "yes"; then
 	    ac_safe=`echo "langinfo.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for langinfo.h""... $ac_c" 1>&6
-echo "configure:4531: checking for langinfo.h" >&5
+echo "configure:4570: checking for langinfo.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4536 "configure"
+#line 4575 "configure"
 #include "confdefs.h"
 #include <langinfo.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:4541: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:4580: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -4562,17 +4601,17 @@ fi
 	fi
     fi
     echo $ac_n "checking whether to use nl_langinfo""... $ac_c" 1>&6
-echo "configure:4566: checking whether to use nl_langinfo" >&5
+echo "configure:4605: checking whether to use nl_langinfo" >&5
     if test "$langinfo_ok" = "yes"; then
 	cat > conftest.$ac_ext <<EOF
-#line 4569 "configure"
+#line 4608 "configure"
 #include "confdefs.h"
 #include <langinfo.h>
 int main() {
 nl_langinfo(CODESET);
 ; return 0; }
 EOF
-if { (eval echo configure:4576: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4615: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   langinfo_ok=yes
 else
@@ -4608,12 +4647,12 @@ EOF
     #--------------------------------------------------------------------
 
     echo $ac_n "checking for sin""... $ac_c" 1>&6
-echo "configure:4612: checking for sin" >&5
+echo "configure:4651: checking for sin" >&5
 if eval "test \"`echo '$''{'ac_cv_func_sin'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4617 "configure"
+#line 4656 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char sin(); below.  */
@@ -4636,7 +4675,7 @@ sin();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4640: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4679: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_sin=yes"
 else
@@ -4657,7 +4696,7 @@ MATH_LIBS="-lm"
 fi
 
     echo $ac_n "checking for main in -lieee""... $ac_c" 1>&6
-echo "configure:4661: checking for main in -lieee" >&5
+echo "configure:4700: checking for main in -lieee" >&5
 ac_lib_var=`echo ieee'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -4665,14 +4704,14 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lieee  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4669 "configure"
+#line 4708 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:4676: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4715: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -4699,7 +4738,7 @@ fi
     #--------------------------------------------------------------------
 
     echo $ac_n "checking for main in -linet""... $ac_c" 1>&6
-echo "configure:4703: checking for main in -linet" >&5
+echo "configure:4742: checking for main in -linet" >&5
 ac_lib_var=`echo inet'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -4707,14 +4746,14 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-linet  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4711 "configure"
+#line 4750 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:4718: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4757: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -4736,17 +4775,17 @@ fi
 
     ac_safe=`echo "net/errno.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for net/errno.h""... $ac_c" 1>&6
-echo "configure:4740: checking for net/errno.h" >&5
+echo "configure:4779: checking for net/errno.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4745 "configure"
+#line 4784 "configure"
 #include "confdefs.h"
 #include <net/errno.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:4750: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:4789: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -4791,12 +4830,12 @@ fi
 
     tcl_checkBoth=0
     echo $ac_n "checking for connect""... $ac_c" 1>&6
-echo "configure:4795: checking for connect" >&5
+echo "configure:4834: checking for connect" >&5
 if eval "test \"`echo '$''{'ac_cv_func_connect'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4800 "configure"
+#line 4839 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char connect(); below.  */
@@ -4819,7 +4858,7 @@ connect();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4823: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4862: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_connect=yes"
 else
@@ -4841,12 +4880,12 @@ fi
 
     if test "$tcl_checkSocket" = 1; then
 	echo $ac_n "checking for setsockopt""... $ac_c" 1>&6
-echo "configure:4845: checking for setsockopt" >&5
+echo "configure:4884: checking for setsockopt" >&5
 if eval "test \"`echo '$''{'ac_cv_func_setsockopt'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4850 "configure"
+#line 4889 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char setsockopt(); below.  */
@@ -4869,7 +4908,7 @@ setsockopt();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4873: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4912: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_setsockopt=yes"
 else
@@ -4887,7 +4926,7 @@ if eval "test \"`echo '$ac_cv_func_'setsockopt`\" = yes"; then
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for setsockopt in -lsocket""... $ac_c" 1>&6
-echo "configure:4891: checking for setsockopt in -lsocket" >&5
+echo "configure:4930: checking for setsockopt in -lsocket" >&5
 ac_lib_var=`echo socket'_'setsockopt | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -4895,7 +4934,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lsocket  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4899 "configure"
+#line 4938 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -4906,7 +4945,7 @@ int main() {
 setsockopt()
 ; return 0; }
 EOF
-if { (eval echo configure:4910: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4949: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -4934,12 +4973,12 @@ fi
 	tk_oldLibs=$LIBS
 	LIBS="$LIBS -lsocket -lnsl"
 	echo $ac_n "checking for accept""... $ac_c" 1>&6
-echo "configure:4938: checking for accept" >&5
+echo "configure:4977: checking for accept" >&5
 if eval "test \"`echo '$''{'ac_cv_func_accept'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4943 "configure"
+#line 4982 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char accept(); below.  */
@@ -4962,7 +5001,7 @@ accept();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4966: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5005: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_accept=yes"
 else
@@ -4984,12 +5023,12 @@ fi
 
     fi
     echo $ac_n "checking for gethostbyname""... $ac_c" 1>&6
-echo "configure:4988: checking for gethostbyname" >&5
+echo "configure:5027: checking for gethostbyname" >&5
 if eval "test \"`echo '$''{'ac_cv_func_gethostbyname'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4993 "configure"
+#line 5032 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char gethostbyname(); below.  */
@@ -5012,7 +5051,7 @@ gethostbyname();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5016: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5055: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_gethostbyname=yes"
 else
@@ -5030,7 +5069,7 @@ if eval "test \"`echo '$ac_cv_func_'gethostbyname`\" = yes"; then
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for gethostbyname in -lnsl""... $ac_c" 1>&6
-echo "configure:5034: checking for gethostbyname in -lnsl" >&5
+echo "configure:5073: checking for gethostbyname in -lnsl" >&5
 ac_lib_var=`echo nsl'_'gethostbyname | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5038,7 +5077,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lnsl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5042 "configure"
+#line 5081 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -5049,7 +5088,7 @@ int main() {
 gethostbyname()
 ; return 0; }
 EOF
-if { (eval echo configure:5053: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5092: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -5095,7 +5134,7 @@ LIBS="$LIBS$THREADS_LIBS"
     # Step 0.a: Enable 64 bit support?
 
     echo $ac_n "checking if 64bit support is requested""... $ac_c" 1>&6
-echo "configure:5099: checking if 64bit support is requested" >&5
+echo "configure:5138: checking if 64bit support is requested" >&5
     # Check whether --enable-64bit or --disable-64bit was given.
 if test "${enable_64bit+set}" = set; then
   enableval="$enable_64bit"
@@ -5115,7 +5154,7 @@ fi
     # Step 0.b: Enable Solaris 64 bit VIS support?
 
     echo $ac_n "checking if 64bit Sparc VIS support is requested""... $ac_c" 1>&6
-echo "configure:5119: checking if 64bit Sparc VIS support is requested" >&5
+echo "configure:5158: checking if 64bit Sparc VIS support is requested" >&5
     # Check whether --enable-64bit-vis or --disable-64bit-vis was given.
 if test "${enable_64bit_vis+set}" = set; then
   enableval="$enable_64bit_vis"
@@ -5139,7 +5178,7 @@ fi
     # there are a few systems, like Next, where this doesn't work.
 
     echo $ac_n "checking system version (for dynamic loading)""... $ac_c" 1>&6
-echo "configure:5143: checking system version (for dynamic loading)" >&5
+echo "configure:5182: checking system version (for dynamic loading)" >&5
     if test -f /usr/lib/NextStep/software_version; then
 	system=NEXTSTEP-`awk '/3/,/3/' /usr/lib/NextStep/software_version`
     else
@@ -5165,7 +5204,7 @@ echo "configure:5143: checking system version (for dynamic loading)" >&5
     # Linux can use either -ldl or -ldld for dynamic loading.
 
     echo $ac_n "checking for dlopen in -ldl""... $ac_c" 1>&6
-echo "configure:5169: checking for dlopen in -ldl" >&5
+echo "configure:5208: checking for dlopen in -ldl" >&5
 ac_lib_var=`echo dl'_'dlopen | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5173,7 +5212,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ldl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5177 "configure"
+#line 5216 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -5184,7 +5223,7 @@ int main() {
 dlopen()
 ; return 0; }
 EOF
-if { (eval echo configure:5188: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5227: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -5228,7 +5267,7 @@ fi
     # Extract the first word of "ar", so it can be a program name with args.
 set dummy ar; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:5232: checking for $ac_word" >&5
+echo "configure:5271: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_AR'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -5334,7 +5373,7 @@ fi
 	    # known GMT value.
 
 	    echo $ac_n "checking for gettimeofday in -lbsd""... $ac_c" 1>&6
-echo "configure:5338: checking for gettimeofday in -lbsd" >&5
+echo "configure:5377: checking for gettimeofday in -lbsd" >&5
 ac_lib_var=`echo bsd'_'gettimeofday | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5342,7 +5381,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lbsd  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5346 "configure"
+#line 5385 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -5353,7 +5392,7 @@ int main() {
 gettimeofday()
 ; return 0; }
 EOF
-if { (eval echo configure:5357: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5396: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -5424,9 +5463,15 @@ EOF
 	    LD_SEARCH_FLAGS=""
 	    ;;
 	HP-UX-*.11.*)
+	    # Use updated header definitions where possible
+	    cat >> confdefs.h <<\EOF
+#define _XOPEN_SOURCE_EXTENDED 1
+EOF
+
+
 	    SHLIB_SUFFIX=".sl"
 	    echo $ac_n "checking for shl_load in -ldld""... $ac_c" 1>&6
-echo "configure:5430: checking for shl_load in -ldld" >&5
+echo "configure:5475: checking for shl_load in -ldld" >&5
 ac_lib_var=`echo dld'_'shl_load | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5434,7 +5479,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ldld  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5438 "configure"
+#line 5483 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -5445,7 +5490,7 @@ int main() {
 shl_load()
 ; return 0; }
 EOF
-if { (eval echo configure:5449: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5494: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -5490,7 +5535,7 @@ fi
 	HP-UX-*.08.*|HP-UX-*.09.*|HP-UX-*.10.*)
 	    SHLIB_SUFFIX=".sl"
 	    echo $ac_n "checking for shl_load in -ldld""... $ac_c" 1>&6
-echo "configure:5494: checking for shl_load in -ldld" >&5
+echo "configure:5539: checking for shl_load in -ldld" >&5
 ac_lib_var=`echo dld'_'shl_load | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5498,7 +5543,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ldld  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5502 "configure"
+#line 5547 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -5509,7 +5554,7 @@ int main() {
 shl_load()
 ; return 0; }
 EOF
-if { (eval echo configure:5513: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5558: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -5616,17 +5661,17 @@ fi
 	    else
 		ac_safe=`echo "dld.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for dld.h""... $ac_c" 1>&6
-echo "configure:5620: checking for dld.h" >&5
+echo "configure:5665: checking for dld.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5625 "configure"
+#line 5670 "configure"
 #include "confdefs.h"
 #include <dld.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:5630: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5675: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -5683,17 +5728,17 @@ fi
 	    else
 		ac_safe=`echo "dld.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for dld.h""... $ac_c" 1>&6
-echo "configure:5687: checking for dld.h" >&5
+echo "configure:5732: checking for dld.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5692 "configure"
+#line 5737 "configure"
 #include "confdefs.h"
 #include <dld.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:5697: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5742: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -5748,17 +5793,17 @@ fi
 	    # Not available on all versions:  check for include file.
 	    ac_safe=`echo "dlfcn.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for dlfcn.h""... $ac_c" 1>&6
-echo "configure:5752: checking for dlfcn.h" >&5
+echo "configure:5797: checking for dlfcn.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5757 "configure"
+#line 5802 "configure"
 #include "confdefs.h"
 #include <dlfcn.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:5762: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5807: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -5785,9 +5830,9 @@ if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
 		LDFLAGS=""
 		LD_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
 		echo $ac_n "checking for ELF""... $ac_c" 1>&6
-echo "configure:5789: checking for ELF" >&5
+echo "configure:5834: checking for ELF" >&5
 		cat > conftest.$ac_ext <<EOF
-#line 5791 "configure"
+#line 5836 "configure"
 #include "confdefs.h"
 
 #ifdef __ELF__
@@ -6110,17 +6155,17 @@ EOF
 	    # that don't grok the -Bexport option.  Test that it does.
 	    hold_ldflags=$LDFLAGS
 	    echo $ac_n "checking for ld accepts -Bexport flag""... $ac_c" 1>&6
-echo "configure:6114: checking for ld accepts -Bexport flag" >&5
+echo "configure:6159: checking for ld accepts -Bexport flag" >&5
 	    LDFLAGS="${LDFLAGS} -Wl,-Bexport"
 	    cat > conftest.$ac_ext <<EOF
-#line 6117 "configure"
+#line 6162 "configure"
 #include "confdefs.h"
 
 int main() {
 int i;
 ; return 0; }
 EOF
-if { (eval echo configure:6124: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6169: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   found=yes
 else
@@ -6166,9 +6211,9 @@ rm -f conftest*
 
     if test "x$DL_OBJS" = "xtclLoadAout.o" ; then
 	echo $ac_n "checking sys/exec.h""... $ac_c" 1>&6
-echo "configure:6170: checking sys/exec.h" >&5
+echo "configure:6215: checking sys/exec.h" >&5
 	cat > conftest.$ac_ext <<EOF
-#line 6172 "configure"
+#line 6217 "configure"
 #include "confdefs.h"
 #include <sys/exec.h>
 int main() {
@@ -6186,7 +6231,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:6190: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6235: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_ok=usable
 else
@@ -6204,9 +6249,9 @@ EOF
 
 	else
 	    echo $ac_n "checking a.out.h""... $ac_c" 1>&6
-echo "configure:6208: checking a.out.h" >&5
+echo "configure:6253: checking a.out.h" >&5
 	    cat > conftest.$ac_ext <<EOF
-#line 6210 "configure"
+#line 6255 "configure"
 #include "confdefs.h"
 #include <a.out.h>
 int main() {
@@ -6224,7 +6269,7 @@ int main() {
 	    
 ; return 0; }
 EOF
-if { (eval echo configure:6228: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6273: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_ok=usable
 else
@@ -6242,9 +6287,9 @@ EOF
 
 	    else
 		echo $ac_n "checking sys/exec_aout.h""... $ac_c" 1>&6
-echo "configure:6246: checking sys/exec_aout.h" >&5
+echo "configure:6291: checking sys/exec_aout.h" >&5
 		cat > conftest.$ac_ext <<EOF
-#line 6248 "configure"
+#line 6293 "configure"
 #include "confdefs.h"
 #include <sys/exec_aout.h>
 int main() {
@@ -6262,7 +6307,7 @@ int main() {
 		
 ; return 0; }
 EOF
-if { (eval echo configure:6266: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6311: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_ok=usable
 else
@@ -6359,7 +6404,7 @@ fi
 
 
     echo $ac_n "checking for build with symbols""... $ac_c" 1>&6
-echo "configure:6363: checking for build with symbols" >&5
+echo "configure:6408: checking for build with symbols" >&5
     # Check whether --enable-symbols or --disable-symbols was given.
 if test "${enable_symbols+set}" = set; then
   enableval="$enable_symbols"
@@ -6396,17 +6441,17 @@ TCL_DBGX=${DBGX}
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:6400: checking for $ac_hdr" >&5
+echo "configure:6445: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6405 "configure"
+#line 6450 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:6410: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:6455: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -6436,17 +6481,17 @@ done
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:6440: checking for $ac_hdr" >&5
+echo "configure:6485: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6445 "configure"
+#line 6490 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:6450: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:6495: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -6473,7 +6518,7 @@ fi
 done
 
     echo $ac_n "checking FIONBIO vs. O_NONBLOCK for nonblocking I/O""... $ac_c" 1>&6
-echo "configure:6477: checking FIONBIO vs. O_NONBLOCK for nonblocking I/O" >&5
+echo "configure:6522: checking FIONBIO vs. O_NONBLOCK for nonblocking I/O" >&5
     if test -f /usr/lib/NextStep/software_version; then
 	system=NEXTSTEP-`awk '/3/,/3/' /usr/lib/NextStep/software_version`
     else
@@ -6535,7 +6580,7 @@ TCL_SHARED_LIB_SUFFIX=${SHARED_LIB_SUFFIX}
 
 
     echo $ac_n "checking how to build libraries""... $ac_c" 1>&6
-echo "configure:6539: checking how to build libraries" >&5
+echo "configure:6584: checking how to build libraries" >&5
     # Check whether --enable-shared or --disable-shared was given.
 if test "${enable_shared+set}" = set; then
   enableval="$enable_shared"
diff --git a/unix/tcl.m4 b/unix/tcl.m4
index 5640546..13234da 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -791,6 +791,9 @@ dnl AC_CHECK_TOOL(AR, ar, :)
 	    LD_SEARCH_FLAGS=""
 	    ;;
 	HP-UX-*.11.*)
+	    # Use updated header definitions where possible
+	    AC_DEFINE(_XOPEN_SOURCE_EXTENDED)
+
 	    SHLIB_SUFFIX=".sl"
 	    AC_CHECK_LIB(dld, shl_load, tcl_ok=yes, tcl_ok=no)
 	    if test "$tcl_ok" = yes; then
@@ -1447,6 +1450,7 @@ dnl AC_CHECK_TOOL(AR, ar, :)
 # Results:
 #
 #	Defines only one of the following vars:
+#		HAVE_SYS_MODEM_H
 #		USE_TERMIOS
 #		USE_TERMIO
 #		USE_SGTTY
@@ -1454,6 +1458,7 @@ dnl AC_CHECK_TOOL(AR, ar, :)
 #--------------------------------------------------------------------
 
 AC_DEFUN(SC_SERIAL_PORT, [
+    AC_CHECK_HEADERS(sys/modem.h)
     AC_MSG_CHECKING([termios vs. termio vs. sgtty])
     AC_CACHE_VAL(tcl_cv_api_serial, [
     AC_TRY_RUN([
@@ -1582,7 +1587,6 @@ int main() {
 #--------------------------------------------------------------------
 
 AC_DEFUN(SC_MISSING_POSIX_HEADERS, [
-
     AC_MSG_CHECKING(dirent.h)
     AC_TRY_LINK([#include <sys/types.h>
 #include <dirent.h>], [