* unix/configure:

	* unix/tcl.m4: extended test of termios vs. termio vs. sgtty to
	better detect result on Linux and when certain configure
	redirections are being used. (max) [Patch #402923; Bug #227412,
	#219194]

2 files changed, 369 insertions, 183 deletions

diff --git a/unix/configure b/unix/configure
index 18c186b..835273a 100755
--- a/unix/configure
+++ b/unix/configure
@@ -533,7 +533,7 @@ else
 fi
 
 
-# RCS: @(#) $Id: configure.in,v 1.63 2000/10/31 00:30:56 hobbs Exp $
+# RCS: @(#) $Id: configure.in,v 1.64 2001/04/02 01:59:26 hobbs Exp $
 
 TCL_VERSION=8.4
 TCL_MAJOR_VERSION=8
@@ -2290,6 +2290,129 @@ fi
 rm -fr conftest*
 fi
 
+
+    if test $tk_ok = sgtty; then
+	cat >> confdefs.h <<\EOF
+#define USE_SGTTY 1
+EOF
+
+    else
+	if test "$cross_compiling" = yes; then
+  tk_ok=no
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2305 "configure"
+#include "confdefs.h"
+
+#include <termios.h>
+#include <errno.h>
+
+main()
+{
+    struct termios t;
+    if (tcgetattr(0, &t) == 0
+	|| errno == ENOTTY || errno == ENXIO || errno == EINVAL) {
+	cfsetospeed(&t, 0);
+	t.c_cflag |= PARENB | PARODD | CSIZE | CSTOPB;
+	return 0;
+    }
+    return 1;
+}
+EOF
+if { (eval echo configure:2323: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+then
+  tk_ok=termios
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  tk_ok=no
+fi
+rm -fr conftest*
+fi
+
+
+    if test $tk_ok = termios; then
+	cat >> confdefs.h <<\EOF
+#define USE_TERMIOS 1
+EOF
+
+    else
+	if test "$cross_compiling" = yes; then
+  tk_ok=no
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2346 "configure"
+#include "confdefs.h"
+
+#include <termio.h>
+#include <errno.h>
+
+main()
+{
+    struct termio t;
+    if (ioctl(0, TCGETA, &t) == 0
+	|| errno == ENOTTY || errno == ENXIO || errno == EINVAL) {
+	t.c_cflag |= CBAUD | PARENB | PARODD | CSIZE | CSTOPB;
+	return 0;
+    }
+    return 1;
+    }
+EOF
+if { (eval echo configure:2363: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+then
+  tk_ok=termio
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  tk_ok=no
+fi
+rm -fr conftest*
+fi
+
+
+    if test $tk_ok = termio; then
+	cat >> confdefs.h <<\EOF
+#define USE_TERMIO 1
+EOF
+
+    else
+	if test "$cross_compiling" = yes; then
+  tk_ok=none
+else
+  cat > conftest.$ac_ext <<EOF
+#line 2386 "configure"
+#include "confdefs.h"
+
+#include <sgtty.h>
+#include <errno.h>
+
+main()
+{
+    struct sgttyb t;
+    if (ioctl(0, TIOCGETP, &t) == 0
+	|| errno == ENOTTY || errno == ENXIO || errno == EINVAL) {
+	t.sg_ospeed = 0;
+	t.sg_flags |= ODDP | EVENP | RAW;
+	return 0;
+    }
+    return 1;
+}
+EOF
+if { (eval echo configure:2404: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+then
+  tk_ok=sgtty
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -fr conftest*
+  tk_ok=none
+fi
+rm -fr conftest*
+fi
+
+
     if test $tk_ok = sgtty; then
 	cat >> confdefs.h <<\EOF
 #define USE_SGTTY 1
@@ -2298,6 +2421,9 @@ EOF
     fi
     fi
     fi
+    fi
+    fi
+    fi
     echo "$ac_t""$tk_ok" 1>&6
 
 
@@ -2312,16 +2438,16 @@ EOF
 #--------------------------------------------------------------------
 
 echo $ac_n "checking fd_set and sys/select""... $ac_c" 1>&6
-echo "configure:2316: checking fd_set and sys/select" >&5
+echo "configure:2442: checking fd_set and sys/select" >&5
 cat > conftest.$ac_ext <<EOF
-#line 2318 "configure"
+#line 2444 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 int main() {
 fd_set readMask, writeMask;
 ; return 0; }
 EOF
-if { (eval echo configure:2325: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2451: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tk_ok=yes
 else
@@ -2333,7 +2459,7 @@ fi
 rm -f conftest*
 if test $tk_ok = no; then
     cat > conftest.$ac_ext <<EOF
-#line 2337 "configure"
+#line 2463 "configure"
 #include "confdefs.h"
 #include <sys/select.h>
 EOF
@@ -2364,12 +2490,12 @@ fi
 #------------------------------------------------------------------------------
 
 echo $ac_n "checking whether struct tm is in sys/time.h or time.h""... $ac_c" 1>&6
-echo "configure:2368: checking whether struct tm is in sys/time.h or time.h" >&5
+echo "configure:2494: checking whether struct tm is in sys/time.h or time.h" >&5
 if eval "test \"`echo '$''{'ac_cv_struct_tm'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2373 "configure"
+#line 2499 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <time.h>
@@ -2377,7 +2503,7 @@ int main() {
 struct tm *tp; tp->tm_sec;
 ; return 0; }
 EOF
-if { (eval echo configure:2381: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2507: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_struct_tm=time.h
 else
@@ -2402,17 +2528,17 @@ fi
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:2406: checking for $ac_hdr" >&5
+echo "configure:2532: 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 2411 "configure"
+#line 2537 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2416: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2542: \"$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*
@@ -2439,12 +2565,12 @@ fi
 done
 
     echo $ac_n "checking whether time.h and sys/time.h may both be included""... $ac_c" 1>&6
-echo "configure:2443: checking whether time.h and sys/time.h may both be included" >&5
+echo "configure:2569: checking whether time.h and sys/time.h may both be included" >&5
 if eval "test \"`echo '$''{'ac_cv_header_time'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2448 "configure"
+#line 2574 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/time.h>
@@ -2453,7 +2579,7 @@ int main() {
 struct tm *tp;
 ; return 0; }
 EOF
-if { (eval echo configure:2457: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2583: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_header_time=yes
 else
@@ -2474,12 +2600,12 @@ EOF
 fi
 
     echo $ac_n "checking for tm_zone in struct tm""... $ac_c" 1>&6
-echo "configure:2478: checking for tm_zone in struct tm" >&5
+echo "configure:2604: checking for tm_zone in struct tm" >&5
 if eval "test \"`echo '$''{'ac_cv_struct_tm_zone'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2483 "configure"
+#line 2609 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <$ac_cv_struct_tm>
@@ -2487,7 +2613,7 @@ int main() {
 struct tm tm; tm.tm_zone;
 ; return 0; }
 EOF
-if { (eval echo configure:2491: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2617: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_struct_tm_zone=yes
 else
@@ -2507,12 +2633,12 @@ EOF
 
 else
   echo $ac_n "checking for tzname""... $ac_c" 1>&6
-echo "configure:2511: checking for tzname" >&5
+echo "configure:2637: checking for tzname" >&5
 if eval "test \"`echo '$''{'ac_cv_var_tzname'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2516 "configure"
+#line 2642 "configure"
 #include "confdefs.h"
 #include <time.h>
 #ifndef tzname /* For SGI.  */
@@ -2522,7 +2648,7 @@ int main() {
 atoi(*tzname);
 ; return 0; }
 EOF
-if { (eval echo configure:2526: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2652: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   ac_cv_var_tzname=yes
 else
@@ -2545,16 +2671,16 @@ fi
 
 
     echo $ac_n "checking tm_tzadj in struct tm""... $ac_c" 1>&6
-echo "configure:2549: checking tm_tzadj in struct tm" >&5
+echo "configure:2675: checking tm_tzadj in struct tm" >&5
     cat > conftest.$ac_ext <<EOF
-#line 2551 "configure"
+#line 2677 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
 struct tm tm; tm.tm_tzadj;
 ; return 0; }
 EOF
-if { (eval echo configure:2558: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2684: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cat >> confdefs.h <<\EOF
 #define HAVE_TM_TZADJ 1
@@ -2570,16 +2696,16 @@ fi
 rm -f conftest*
 
     echo $ac_n "checking tm_gmtoff in struct tm""... $ac_c" 1>&6
-echo "configure:2574: checking tm_gmtoff in struct tm" >&5
+echo "configure:2700: checking tm_gmtoff in struct tm" >&5
     cat > conftest.$ac_ext <<EOF
-#line 2576 "configure"
+#line 2702 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
 struct tm tm; tm.tm_gmtoff;
 ; return 0; }
 EOF
-if { (eval echo configure:2583: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2709: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cat >> confdefs.h <<\EOF
 #define HAVE_TM_GMTOFF 1
@@ -2600,9 +2726,9 @@ rm -f conftest*
     #
     have_timezone=no
     echo $ac_n "checking long timezone variable""... $ac_c" 1>&6
-echo "configure:2604: checking long timezone variable" >&5
+echo "configure:2730: checking long timezone variable" >&5
     cat > conftest.$ac_ext <<EOF
-#line 2606 "configure"
+#line 2732 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
@@ -2611,7 +2737,7 @@ extern long timezone;
 	    exit (0);
 ; return 0; }
 EOF
-if { (eval echo configure:2615: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2741: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   have_timezone=yes
 	    cat >> confdefs.h <<\EOF
@@ -2632,9 +2758,9 @@ rm -f conftest*
     #
     if test "$have_timezone" = no; then
     echo $ac_n "checking time_t timezone variable""... $ac_c" 1>&6
-echo "configure:2636: checking time_t timezone variable" >&5
+echo "configure:2762: checking time_t timezone variable" >&5
     cat > conftest.$ac_ext <<EOF
-#line 2638 "configure"
+#line 2764 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
@@ -2643,7 +2769,7 @@ extern time_t timezone;
 	    exit (0);
 ; return 0; }
 EOF
-if { (eval echo configure:2647: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2773: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cat >> confdefs.h <<\EOF
 #define HAVE_TIMEZONE_VAR 1
@@ -2666,12 +2792,12 @@ rm -f conftest*
 #	in struct stat.  But we might be able to use fstatfs instead.
 #--------------------------------------------------------------------
 echo $ac_n "checking for st_blksize in struct stat""... $ac_c" 1>&6
-echo "configure:2670: checking for st_blksize in struct stat" >&5
+echo "configure:2796: checking for st_blksize in struct stat" >&5
 if eval "test \"`echo '$''{'ac_cv_struct_st_blksize'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2675 "configure"
+#line 2801 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -2679,7 +2805,7 @@ int main() {
 struct stat s; s.st_blksize;
 ; return 0; }
 EOF
-if { (eval echo configure:2683: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2809: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_struct_st_blksize=yes
 else
@@ -2700,12 +2826,12 @@ EOF
 fi
 
 echo $ac_n "checking for fstatfs""... $ac_c" 1>&6
-echo "configure:2704: checking for fstatfs" >&5
+echo "configure:2830: checking for fstatfs" >&5
 if eval "test \"`echo '$''{'ac_cv_func_fstatfs'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2709 "configure"
+#line 2835 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char fstatfs(); below.  */
@@ -2728,7 +2854,7 @@ fstatfs();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2732: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2858: \"$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
@@ -2757,7 +2883,7 @@ fi
 #       data, this checks it and add memcmp.o to LIBOBJS if needed
 #--------------------------------------------------------------------
 echo $ac_n "checking for 8-bit clean memcmp""... $ac_c" 1>&6
-echo "configure:2761: checking for 8-bit clean memcmp" >&5
+echo "configure:2887: checking for 8-bit clean memcmp" >&5
 if eval "test \"`echo '$''{'ac_cv_func_memcmp_clean'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2765,7 +2891,7 @@ else
   ac_cv_func_memcmp_clean=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 2769 "configure"
+#line 2895 "configure"
 #include "confdefs.h"
 
 main()
@@ -2775,7 +2901,7 @@ main()
 }
 
 EOF
-if { (eval echo configure:2779: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2905: \"$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
@@ -2799,12 +2925,12 @@ 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""... $ac_c" 1>&6
-echo "configure:2803: checking for memmove" >&5
+echo "configure:2929: checking for memmove" >&5
 if eval "test \"`echo '$''{'ac_cv_func_memmove'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2808 "configure"
+#line 2934 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char memmove(); below.  */
@@ -2827,7 +2953,7 @@ memmove();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2831: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2957: \"$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
@@ -2860,12 +2986,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking proper strstr implementation""... $ac_c" 1>&6
-echo "configure:2864: checking proper strstr implementation" >&5
+echo "configure:2990: checking proper strstr implementation" >&5
 if test "$cross_compiling" = yes; then
   tcl_ok=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 2869 "configure"
+#line 2995 "configure"
 #include "confdefs.h"
 
 extern int strstr();
@@ -2875,7 +3001,7 @@ int main()
 }
 
 EOF
-if { (eval echo configure:2879: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:3005: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_ok=yes
 else
@@ -2901,12 +3027,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for strtoul""... $ac_c" 1>&6
-echo "configure:2905: checking for strtoul" >&5
+echo "configure:3031: checking for strtoul" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strtoul'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2910 "configure"
+#line 3036 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strtoul(); below.  */
@@ -2929,7 +3055,7 @@ strtoul();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2933: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3059: \"$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
@@ -2953,7 +3079,7 @@ if test "$cross_compiling" = yes; then
   tcl_ok=0
 else
   cat > conftest.$ac_ext <<EOF
-#line 2957 "configure"
+#line 3083 "configure"
 #include "confdefs.h"
 
 extern int strtoul();
@@ -2969,7 +3095,7 @@ int main()
     exit(0);
 }
 EOF
-if { (eval echo configure:2973: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:3099: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -2992,12 +3118,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for strtod""... $ac_c" 1>&6
-echo "configure:2996: checking for strtod" >&5
+echo "configure:3122: checking for strtod" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strtod'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3001 "configure"
+#line 3127 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strtod(); below.  */
@@ -3020,7 +3146,7 @@ strtod();
 
 ; return 0; }
 EOF
-if { (eval echo configure:3024: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3150: \"$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
@@ -3044,7 +3170,7 @@ if test "$cross_compiling" = yes; then
   tcl_ok=0
 else
   cat > conftest.$ac_ext <<EOF
-#line 3048 "configure"
+#line 3174 "configure"
 #include "confdefs.h"
 
 extern double strtod();
@@ -3060,7 +3186,7 @@ int main()
     exit(0);
 }
 EOF
-if { (eval echo configure:3064: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:3190: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -3086,12 +3212,12 @@ fi
 
 
     echo $ac_n "checking for strtod""... $ac_c" 1>&6
-echo "configure:3090: checking for strtod" >&5
+echo "configure:3216: checking for strtod" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strtod'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3095 "configure"
+#line 3221 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strtod(); below.  */
@@ -3114,7 +3240,7 @@ strtod();
 
 ; return 0; }
 EOF
-if { (eval echo configure:3118: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3244: \"$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
@@ -3136,12 +3262,12 @@ fi
 
     if test "$tcl_strtod" = 1; then
 	echo $ac_n "checking for Solaris2.4/Tru64 strtod bugs""... $ac_c" 1>&6
-echo "configure:3140: checking for Solaris2.4/Tru64 strtod bugs" >&5
+echo "configure:3266: checking for Solaris2.4/Tru64 strtod bugs" >&5
 	if test "$cross_compiling" = yes; then
   tcl_ok=0
 else
   cat > conftest.$ac_ext <<EOF
-#line 3145 "configure"
+#line 3271 "configure"
 #include "confdefs.h"
 
 	    extern double strtod();
@@ -3161,7 +3287,7 @@ else
 		exit(0);
 	    }
 EOF
-if { (eval echo configure:3165: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:3291: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_ok=1
 else
@@ -3192,12 +3318,12 @@ EOF
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for ANSI C header files""... $ac_c" 1>&6
-echo "configure:3196: checking for ANSI C header files" >&5
+echo "configure:3322: checking for ANSI C header files" >&5
 if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3201 "configure"
+#line 3327 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <stdarg.h>
@@ -3205,7 +3331,7 @@ else
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:3209: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:3335: \"$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*
@@ -3222,7 +3348,7 @@ 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 3226 "configure"
+#line 3352 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -3240,7 +3366,7 @@ 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 3244 "configure"
+#line 3370 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -3261,7 +3387,7 @@ if test "$cross_compiling" = yes; then
   :
 else
   cat > conftest.$ac_ext <<EOF
-#line 3265 "configure"
+#line 3391 "configure"
 #include "confdefs.h"
 #include <ctype.h>
 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
@@ -3272,7 +3398,7 @@ if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
 exit (0); }
 
 EOF
-if { (eval echo configure:3276: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:3402: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -3296,12 +3422,12 @@ EOF
 fi
 
 echo $ac_n "checking for mode_t""... $ac_c" 1>&6
-echo "configure:3300: checking for mode_t" >&5
+echo "configure:3426: checking for mode_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_mode_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3305 "configure"
+#line 3431 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -3329,12 +3455,12 @@ EOF
 fi
 
 echo $ac_n "checking for pid_t""... $ac_c" 1>&6
-echo "configure:3333: checking for pid_t" >&5
+echo "configure:3459: checking for pid_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_pid_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3338 "configure"
+#line 3464 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -3362,12 +3488,12 @@ EOF
 fi
 
 echo $ac_n "checking for size_t""... $ac_c" 1>&6
-echo "configure:3366: checking for size_t" >&5
+echo "configure:3492: checking for size_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_size_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3371 "configure"
+#line 3497 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -3395,12 +3521,12 @@ EOF
 fi
 
 echo $ac_n "checking for uid_t in sys/types.h""... $ac_c" 1>&6
-echo "configure:3399: checking for uid_t in sys/types.h" >&5
+echo "configure:3525: checking for uid_t in sys/types.h" >&5
 if eval "test \"`echo '$''{'ac_cv_type_uid_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3404 "configure"
+#line 3530 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 EOF
@@ -3437,12 +3563,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for opendir""... $ac_c" 1>&6
-echo "configure:3441: checking for opendir" >&5
+echo "configure:3567: checking for opendir" >&5
 if eval "test \"`echo '$''{'ac_cv_func_opendir'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3446 "configure"
+#line 3572 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char opendir(); below.  */
@@ -3465,7 +3591,7 @@ opendir();
 
 ; return 0; }
 EOF
-if { (eval echo configure:3469: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3595: \"$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
@@ -3498,9 +3624,9 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking union wait""... $ac_c" 1>&6
-echo "configure:3502: checking union wait" >&5
+echo "configure:3628: checking union wait" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3504 "configure"
+#line 3630 "configure"
 #include "confdefs.h"
 #include <sys/types.h> 
 #include <sys/wait.h>
@@ -3512,7 +3638,7 @@ WIFEXITED(x);		/* Generates compiler error if WIFEXITED
 
 ; return 0; }
 EOF
-if { (eval echo configure:3516: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3642: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_ok=yes
 else
@@ -3536,9 +3662,9 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking matherr support""... $ac_c" 1>&6
-echo "configure:3540: checking matherr support" >&5
+echo "configure:3666: checking matherr support" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3542 "configure"
+#line 3668 "configure"
 #include "confdefs.h"
 #include <math.h>
 int main() {
@@ -3549,7 +3675,7 @@ x.type = SING;
 
 ; return 0; }
 EOF
-if { (eval echo configure:3553: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3679: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_ok=yes
 else
@@ -3574,12 +3700,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for strncasecmp""... $ac_c" 1>&6
-echo "configure:3578: checking for strncasecmp" >&5
+echo "configure:3704: checking for strncasecmp" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strncasecmp'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3583 "configure"
+#line 3709 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strncasecmp(); below.  */
@@ -3602,7 +3728,7 @@ strncasecmp();
 
 ; return 0; }
 EOF
-if { (eval echo configure:3606: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3732: \"$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
@@ -3624,7 +3750,7 @@ fi
 
 if test "$tcl_ok" = 0; then
     echo $ac_n "checking for strncasecmp in -lsocket""... $ac_c" 1>&6
-echo "configure:3628: checking for strncasecmp in -lsocket" >&5
+echo "configure:3754: checking for strncasecmp in -lsocket" >&5
 ac_lib_var=`echo socket'_'strncasecmp | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -3632,7 +3758,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lsocket  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 3636 "configure"
+#line 3762 "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
@@ -3643,7 +3769,7 @@ int main() {
 strncasecmp()
 ; return 0; }
 EOF
-if { (eval echo configure:3647: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3773: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -3667,7 +3793,7 @@ fi
 fi
 if test "$tcl_ok" = 0; then
     echo $ac_n "checking for strncasecmp in -linet""... $ac_c" 1>&6
-echo "configure:3671: checking for strncasecmp in -linet" >&5
+echo "configure:3797: checking for strncasecmp in -linet" >&5
 ac_lib_var=`echo inet'_'strncasecmp | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -3675,7 +3801,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-linet  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 3679 "configure"
+#line 3805 "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
@@ -3686,7 +3812,7 @@ int main() {
 strncasecmp()
 ; return 0; }
 EOF
-if { (eval echo configure:3690: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3816: \"$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
@@ -3724,12 +3850,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for BSDgettimeofday""... $ac_c" 1>&6
-echo "configure:3728: checking for BSDgettimeofday" >&5
+echo "configure:3854: checking for BSDgettimeofday" >&5
 if eval "test \"`echo '$''{'ac_cv_func_BSDgettimeofday'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3733 "configure"
+#line 3859 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char BSDgettimeofday(); below.  */
@@ -3752,7 +3878,7 @@ BSDgettimeofday();
 
 ; return 0; }
 EOF
-if { (eval echo configure:3756: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3882: \"$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
@@ -3774,12 +3900,12 @@ else
   echo "$ac_t""no" 1>&6
 
     echo $ac_n "checking for gettimeofday""... $ac_c" 1>&6
-echo "configure:3778: checking for gettimeofday" >&5
+echo "configure:3904: checking for gettimeofday" >&5
 if eval "test \"`echo '$''{'ac_cv_func_gettimeofday'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3783 "configure"
+#line 3909 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char gettimeofday(); below.  */
@@ -3802,7 +3928,7 @@ gettimeofday();
 
 ; return 0; }
 EOF
-if { (eval echo configure:3806: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3932: \"$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
@@ -3829,9 +3955,9 @@ fi
 fi
 
 echo $ac_n "checking for gettimeofday declaration""... $ac_c" 1>&6
-echo "configure:3833: checking for gettimeofday declaration" >&5
+echo "configure:3959: checking for gettimeofday declaration" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3835 "configure"
+#line 3961 "configure"
 #include "confdefs.h"
 #include <sys/time.h>
 EOF
@@ -3859,14 +3985,14 @@ rm -f conftest*
 #--------------------------------------------------------------------
 
 echo $ac_n "checking whether char is unsigned""... $ac_c" 1>&6
-echo "configure:3863: checking whether char is unsigned" >&5
+echo "configure:3989: checking whether char is unsigned" >&5
 if eval "test \"`echo '$''{'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.$ac_ext <<EOF
-#line 3870 "configure"
+#line 3996 "configure"
 #include "confdefs.h"
 #ifdef __CHAR_UNSIGNED__
   yes
@@ -3888,7 +4014,7 @@ if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 3892 "configure"
+#line 4018 "configure"
 #include "confdefs.h"
 /* volatile prevents gcc2 from optimizing the test away on sparcs.  */
 #if !defined(__STDC__) || __STDC__ != 1
@@ -3898,7 +4024,7 @@ main() {
   volatile char c = 255; exit(c < 0);
 }
 EOF
-if { (eval echo configure:3902: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:4028: \"$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
@@ -3922,9 +4048,9 @@ EOF
 fi
 
 echo $ac_n "checking signed char declarations""... $ac_c" 1>&6
-echo "configure:3926: checking signed char declarations" >&5
+echo "configure:4052: checking signed char declarations" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3928 "configure"
+#line 4054 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -3934,7 +4060,7 @@ p = 0;
 
 ; return 0; }
 EOF
-if { (eval echo configure:3938: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4064: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_ok=yes
 else
@@ -3965,12 +4091,12 @@ fi
     #--------------------------------------------------------------------
 
     echo $ac_n "checking for sin""... $ac_c" 1>&6
-echo "configure:3969: checking for sin" >&5
+echo "configure:4095: checking for sin" >&5
 if eval "test \"`echo '$''{'ac_cv_func_sin'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3974 "configure"
+#line 4100 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char sin(); below.  */
@@ -3993,7 +4119,7 @@ sin();
 
 ; return 0; }
 EOF
-if { (eval echo configure:3997: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4123: \"$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
@@ -4014,7 +4140,7 @@ MATH_LIBS="-lm"
 fi
 
     echo $ac_n "checking for main in -lieee""... $ac_c" 1>&6
-echo "configure:4018: checking for main in -lieee" >&5
+echo "configure:4144: checking for main in -lieee" >&5
 ac_lib_var=`echo ieee'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -4022,14 +4148,14 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lieee  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4026 "configure"
+#line 4152 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:4033: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4159: \"$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
@@ -4056,7 +4182,7 @@ fi
     #--------------------------------------------------------------------
 
     echo $ac_n "checking for main in -linet""... $ac_c" 1>&6
-echo "configure:4060: checking for main in -linet" >&5
+echo "configure:4186: checking for main in -linet" >&5
 ac_lib_var=`echo inet'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -4064,14 +4190,14 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-linet  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4068 "configure"
+#line 4194 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:4075: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4201: \"$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
@@ -4093,17 +4219,17 @@ fi
 
     ac_safe=`echo "net/errno.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for net/errno.h""... $ac_c" 1>&6
-echo "configure:4097: checking for net/errno.h" >&5
+echo "configure:4223: checking for net/errno.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4102 "configure"
+#line 4228 "configure"
 #include "confdefs.h"
 #include <net/errno.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:4107: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:4233: \"$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*
@@ -4148,12 +4274,12 @@ fi
 
     tcl_checkBoth=0
     echo $ac_n "checking for connect""... $ac_c" 1>&6
-echo "configure:4152: checking for connect" >&5
+echo "configure:4278: checking for connect" >&5
 if eval "test \"`echo '$''{'ac_cv_func_connect'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4157 "configure"
+#line 4283 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char connect(); below.  */
@@ -4176,7 +4302,7 @@ connect();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4180: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4306: \"$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
@@ -4198,12 +4324,12 @@ fi
 
     if test "$tcl_checkSocket" = 1; then
 	echo $ac_n "checking for setsockopt""... $ac_c" 1>&6
-echo "configure:4202: checking for setsockopt" >&5
+echo "configure:4328: checking for setsockopt" >&5
 if eval "test \"`echo '$''{'ac_cv_func_setsockopt'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4207 "configure"
+#line 4333 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char setsockopt(); below.  */
@@ -4226,7 +4352,7 @@ setsockopt();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4230: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4356: \"$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
@@ -4244,7 +4370,7 @@ 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""... $ac_c" 1>&6
-echo "configure:4248: checking for setsockopt in -lsocket" >&5
+echo "configure:4374: checking for setsockopt in -lsocket" >&5
 ac_lib_var=`echo socket'_'setsockopt | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -4252,7 +4378,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lsocket  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4256 "configure"
+#line 4382 "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
@@ -4263,7 +4389,7 @@ int main() {
 setsockopt()
 ; return 0; }
 EOF
-if { (eval echo configure:4267: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4393: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -4291,12 +4417,12 @@ fi
 	tk_oldLibs=$LIBS
 	LIBS="$LIBS -lsocket -lnsl"
 	echo $ac_n "checking for accept""... $ac_c" 1>&6
-echo "configure:4295: checking for accept" >&5
+echo "configure:4421: checking for accept" >&5
 if eval "test \"`echo '$''{'ac_cv_func_accept'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4300 "configure"
+#line 4426 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char accept(); below.  */
@@ -4319,7 +4445,7 @@ accept();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4323: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4449: \"$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
@@ -4341,12 +4467,12 @@ fi
 
     fi
     echo $ac_n "checking for gethostbyname""... $ac_c" 1>&6
-echo "configure:4345: checking for gethostbyname" >&5
+echo "configure:4471: checking for gethostbyname" >&5
 if eval "test \"`echo '$''{'ac_cv_func_gethostbyname'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4350 "configure"
+#line 4476 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char gethostbyname(); below.  */
@@ -4369,7 +4495,7 @@ gethostbyname();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4373: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4499: \"$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
@@ -4387,7 +4513,7 @@ 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""... $ac_c" 1>&6
-echo "configure:4391: checking for gethostbyname in -lnsl" >&5
+echo "configure:4517: checking for gethostbyname in -lnsl" >&5
 ac_lib_var=`echo nsl'_'gethostbyname | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -4395,7 +4521,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lnsl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4399 "configure"
+#line 4525 "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
@@ -4406,7 +4532,7 @@ int main() {
 gethostbyname()
 ; return 0; }
 EOF
-if { (eval echo configure:4410: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4536: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -4452,7 +4578,7 @@ LIBS="$LIBS$THREADS_LIBS"
     # Step 0.a: Enable 64 bit support?
 
     echo $ac_n "checking if 64bit support is requested""... $ac_c" 1>&6
-echo "configure:4456: checking if 64bit support is requested" >&5
+echo "configure:4582: checking if 64bit support is requested" >&5
     # Check whether --enable-64bit or --disable-64bit was given.
 if test "${enable_64bit+set}" = set; then
   enableval="$enable_64bit"
@@ -4472,7 +4598,7 @@ fi
     # Step 0.b: Enable Solaris 64 bit VIS support?
 
     echo $ac_n "checking if 64bit Sparc VIS support is requested""... $ac_c" 1>&6
-echo "configure:4476: checking if 64bit Sparc VIS support is requested" >&5
+echo "configure:4602: checking if 64bit Sparc VIS support is requested" >&5
     # Check whether --enable-64bit-vis or --disable-64bit-vis was given.
 if test "${enable_64bit_vis+set}" = set; then
   enableval="$enable_64bit_vis"
@@ -4496,7 +4622,7 @@ 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:4500: checking system version (for dynamic loading)" >&5
+echo "configure:4626: 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
@@ -4519,7 +4645,7 @@ echo "configure:4500: checking system version (for dynamic loading)" >&5
     fi
 
     echo $ac_n "checking if gcc is being used""... $ac_c" 1>&6
-echo "configure:4523: checking if gcc is being used" >&5
+echo "configure:4649: checking if gcc is being used" >&5
     if test "$CC" = "gcc" -o `$CC -v 2>&1 | grep -c gcc` != "0" ; then
 	using_gcc="yes"
     else
@@ -4532,7 +4658,7 @@ echo "configure:4523: checking if gcc is being used" >&5
     # Linux can use either -ldl or -ldld for dynamic loading.
 
     echo $ac_n "checking for dlopen in -ldl""... $ac_c" 1>&6
-echo "configure:4536: checking for dlopen in -ldl" >&5
+echo "configure:4662: checking for dlopen in -ldl" >&5
 ac_lib_var=`echo dl'_'dlopen | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -4540,7 +4666,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ldl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4544 "configure"
+#line 4670 "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
@@ -4551,7 +4677,7 @@ int main() {
 dlopen()
 ; return 0; }
 EOF
-if { (eval echo configure:4555: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4681: \"$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
@@ -4670,7 +4796,7 @@ fi
 	    # known GMT value.
 
 	    echo $ac_n "checking for gettimeofday in -lbsd""... $ac_c" 1>&6
-echo "configure:4674: checking for gettimeofday in -lbsd" >&5
+echo "configure:4800: checking for gettimeofday in -lbsd" >&5
 ac_lib_var=`echo bsd'_'gettimeofday | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -4678,7 +4804,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lbsd  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4682 "configure"
+#line 4808 "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
@@ -4689,7 +4815,7 @@ int main() {
 gettimeofday()
 ; return 0; }
 EOF
-if { (eval echo configure:4693: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4819: \"$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
@@ -4751,7 +4877,7 @@ EOF
 	HP-UX-*.08.*|HP-UX-*.09.*|HP-UX-*.10.*|HP-UX-*.11.*)
 	    SHLIB_SUFFIX=".sl"
 	    echo $ac_n "checking for shl_load in -ldld""... $ac_c" 1>&6
-echo "configure:4755: checking for shl_load in -ldld" >&5
+echo "configure:4881: checking for shl_load in -ldld" >&5
 ac_lib_var=`echo dld'_'shl_load | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -4759,7 +4885,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ldld  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4763 "configure"
+#line 4889 "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
@@ -4770,7 +4896,7 @@ int main() {
 shl_load()
 ; return 0; }
 EOF
-if { (eval echo configure:4774: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4900: \"$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
@@ -4877,17 +5003,17 @@ fi
 	    else
 		ac_safe=`echo "dld.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for dld.h""... $ac_c" 1>&6
-echo "configure:4881: checking for dld.h" >&5
+echo "configure:5007: checking for dld.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4886 "configure"
+#line 5012 "configure"
 #include "confdefs.h"
 #include <dld.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:4891: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5017: \"$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*
@@ -4942,17 +5068,17 @@ 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""... $ac_c" 1>&6
-echo "configure:4946: checking for dlfcn.h" >&5
+echo "configure:5072: checking for dlfcn.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4951 "configure"
+#line 5077 "configure"
 #include "confdefs.h"
 #include <dlfcn.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:4956: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5082: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -4979,9 +5105,9 @@ if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
 		LDFLAGS=""
 		LD_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
 		echo $ac_n "checking for ELF""... $ac_c" 1>&6
-echo "configure:4983: checking for ELF" >&5
+echo "configure:5109: checking for ELF" >&5
 		cat > conftest.$ac_ext <<EOF
-#line 4985 "configure"
+#line 5111 "configure"
 #include "confdefs.h"
 
 #ifdef __ELF__
@@ -5234,17 +5360,17 @@ EOF
 	    # that don't grok the -Bexport option.  Test that it does.
 	    hold_ldflags=$LDFLAGS
 	    echo $ac_n "checking for ld accepts -Bexport flag""... $ac_c" 1>&6
-echo "configure:5238: checking for ld accepts -Bexport flag" >&5
+echo "configure:5364: checking for ld accepts -Bexport flag" >&5
 	    LDFLAGS="${LDFLAGS} -Wl,-Bexport"
 	    cat > conftest.$ac_ext <<EOF
-#line 5241 "configure"
+#line 5367 "configure"
 #include "confdefs.h"
 
 int main() {
 int i;
 ; return 0; }
 EOF
-if { (eval echo configure:5248: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5374: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   found=yes
 else
@@ -5290,9 +5416,9 @@ rm -f conftest*
 
     if test "x$DL_OBJS" = "xtclLoadAout.o" ; then
 	echo $ac_n "checking sys/exec.h""... $ac_c" 1>&6
-echo "configure:5294: checking sys/exec.h" >&5
+echo "configure:5420: checking sys/exec.h" >&5
 	cat > conftest.$ac_ext <<EOF
-#line 5296 "configure"
+#line 5422 "configure"
 #include "confdefs.h"
 #include <sys/exec.h>
 int main() {
@@ -5310,7 +5436,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:5314: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5440: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_ok=usable
 else
@@ -5328,9 +5454,9 @@ EOF
 
 	else
 	    echo $ac_n "checking a.out.h""... $ac_c" 1>&6
-echo "configure:5332: checking a.out.h" >&5
+echo "configure:5458: checking a.out.h" >&5
 	    cat > conftest.$ac_ext <<EOF
-#line 5334 "configure"
+#line 5460 "configure"
 #include "confdefs.h"
 #include <a.out.h>
 int main() {
@@ -5348,7 +5474,7 @@ int main() {
 	    
 ; return 0; }
 EOF
-if { (eval echo configure:5352: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5478: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_ok=usable
 else
@@ -5366,9 +5492,9 @@ EOF
 
 	    else
 		echo $ac_n "checking sys/exec_aout.h""... $ac_c" 1>&6
-echo "configure:5370: checking sys/exec_aout.h" >&5
+echo "configure:5496: checking sys/exec_aout.h" >&5
 		cat > conftest.$ac_ext <<EOF
-#line 5372 "configure"
+#line 5498 "configure"
 #include "confdefs.h"
 #include <sys/exec_aout.h>
 int main() {
@@ -5386,7 +5512,7 @@ int main() {
 		
 ; return 0; }
 EOF
-if { (eval echo configure:5390: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5516: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_ok=usable
 else
@@ -5481,7 +5607,7 @@ fi
 
 
     echo $ac_n "checking for build with symbols""... $ac_c" 1>&6
-echo "configure:5485: checking for build with symbols" >&5
+echo "configure:5611: checking for build with symbols" >&5
     # Check whether --enable-symbols or --disable-symbols was given.
 if test "${enable_symbols+set}" = set; then
   enableval="$enable_symbols"
@@ -5518,17 +5644,17 @@ CFLAGS=${CFLAGS_DEFAULT}
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:5522: checking for $ac_hdr" >&5
+echo "configure:5648: 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 5527 "configure"
+#line 5653 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:5532: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5658: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -5558,17 +5684,17 @@ done
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:5562: checking for $ac_hdr" >&5
+echo "configure:5688: 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 5567 "configure"
+#line 5693 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:5572: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5698: \"$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*
@@ -5595,7 +5721,7 @@ fi
 done
 
     echo $ac_n "checking FIONBIO vs. O_NONBLOCK for nonblocking I/O""... $ac_c" 1>&6
-echo "configure:5599: checking FIONBIO vs. O_NONBLOCK for nonblocking I/O" >&5
+echo "configure:5725: checking FIONBIO vs. O_NONBLOCK for nonblocking I/O" >&5
     if test -f /usr/lib/NextStep/software_version; then
 	system=NEXTSTEP-`awk '/3/,/3/' /usr/lib/NextStep/software_version`
     else
@@ -5657,7 +5783,7 @@ TCL_SHARED_LIB_SUFFIX=${SHARED_LIB_SUFFIX}
 
 
     echo $ac_n "checking how to build libraries""... $ac_c" 1>&6
-echo "configure:5661: checking how to build libraries" >&5
+echo "configure:5787: checking how to build libraries" >&5
     # Check whether --enable-shared or --disable-shared was given.
 if test "${enable_shared+set}" = set; then
   enableval="$enable_shared"
diff --git a/unix/tcl.m4 b/unix/tcl.m4
index e4587ea..0bef313 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -1287,8 +1287,68 @@ main()
     }
     return 1;
 }], tk_ok=sgtty, tk_ok=none, tk_ok=none)
+
     if test $tk_ok = sgtty; then
 	AC_DEFINE(USE_SGTTY)
+    else
+	AC_TRY_RUN([
+#include <termios.h>
+#include <errno.h>
+
+main()
+{
+    struct termios t;
+    if (tcgetattr(0, &t) == 0
+	|| errno == ENOTTY || errno == ENXIO || errno == EINVAL) {
+	cfsetospeed(&t, 0);
+	t.c_cflag |= PARENB | PARODD | CSIZE | CSTOPB;
+	return 0;
+    }
+    return 1;
+}], tk_ok=termios, tk_ok=no, tk_ok=no)
+
+    if test $tk_ok = termios; then
+	AC_DEFINE(USE_TERMIOS)
+    else
+	AC_TRY_RUN([
+#include <termio.h>
+#include <errno.h>
+
+main()
+{
+    struct termio t;
+    if (ioctl(0, TCGETA, &t) == 0
+	|| errno == ENOTTY || errno == ENXIO || errno == EINVAL) {
+	t.c_cflag |= CBAUD | PARENB | PARODD | CSIZE | CSTOPB;
+	return 0;
+    }
+    return 1;
+    }], tk_ok=termio, tk_ok=no, tk_ok=no)
+
+    if test $tk_ok = termio; then
+	AC_DEFINE(USE_TERMIO)
+    else
+	AC_TRY_RUN([
+#include <sgtty.h>
+#include <errno.h>
+
+main()
+{
+    struct sgttyb t;
+    if (ioctl(0, TIOCGETP, &t) == 0
+	|| errno == ENOTTY || errno == ENXIO || errno == EINVAL) {
+	t.sg_ospeed = 0;
+	t.sg_flags |= ODDP | EVENP | RAW;
+	return 0;
+    }
+    return 1;
+}], tk_ok=sgtty, tk_ok=none, tk_ok=none)
+
+    if test $tk_ok = sgtty; then
+	AC_DEFINE(USE_SGTTY)
+    fi
+    fi
+    fi
     fi
     fi
     fi