From 248bded86abd421ead9928de934d19ea197a56a9 Mon Sep 17 00:00:00 2001
From: das <das>
Date: Tue, 19 Dec 2006 01:19:46 +0000
Subject: 	* unix/tcl.m4 (Darwin): --enable-64bit: verify linking with
 64bit -arch 	flag succeeds before enabling 64bit build. 	*
 unix/configure: autoconf-2.13

---
 ChangeLog      |   6 +
 unix/configure | 702 +++++++++++++++++++++++++++++++--------------------------
 unix/tcl.m4    |  28 ++-
 3 files changed, 412 insertions(+), 324 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 0716c36..12abf53 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2006-12-19  Daniel Steffen  <das@users.sourceforge.net>
+
+	* unix/tcl.m4 (Darwin): --enable-64bit: verify linking with 64bit -arch
+	flag succeeds before enabling 64bit build.
+	* unix/configure: autoconf-2.13
+
 2006-12-14  Donal K. Fellows  <donal.k.fellows@man.ac.uk>
 
 	* doc/string.n: Fix example. [Bug 1615277]
diff --git a/unix/configure b/unix/configure
index cdd213a..30bb63f 100755
--- a/unix/configure
+++ b/unix/configure
@@ -3448,15 +3448,79 @@ echo "$ac_t""$tcl_cv_ld_elf" 1>&6
 	    CFLAGS_OPTIMIZE="-Os"
 	    SHLIB_CFLAGS="-fno-common"
 	    if test $do64bit = yes; then
-		do64bit_ok=yes
 		case `arch` in
 		    ppc)
-			CFLAGS="$CFLAGS -arch ppc64 -mpowerpc64 -mcpu=G5";;
+			echo $ac_n "checking if compiler accepts -arch ppc64 flag""... $ac_c" 1>&6
+echo "configure:3455: checking if compiler accepts -arch ppc64 flag" >&5
+if eval "test \"`echo '$''{'tcl_cv_cc_arch_ppc64'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  
+			    hold_cflags=$CFLAGS
+			    CFLAGS="$CFLAGS -arch ppc64 -mpowerpc64 -mcpu=G5"
+			    cat > conftest.$ac_ext <<EOF
+#line 3463 "configure"
+#include "confdefs.h"
+
+int main() {
+
+; return 0; }
+EOF
+if { (eval echo configure:3470: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+  rm -rf conftest*
+  tcl_cv_cc_arch_ppc64=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  tcl_cv_cc_arch_ppc64=no
+fi
+rm -f conftest*
+			    CFLAGS=$hold_cflags
+fi
+
+echo "$ac_t""$tcl_cv_cc_arch_ppc64" 1>&6
+			if test $tcl_cv_cc_arch_ppc64 = yes; then
+			    CFLAGS="$CFLAGS -arch ppc64 -mpowerpc64 -mcpu=G5"
+			    do64bit_ok=yes
+			fi;;
 		    i386)
-			CFLAGS="$CFLAGS -arch x86_64";;
+			echo $ac_n "checking if compiler accepts -arch x86_64 flag""... $ac_c" 1>&6
+echo "configure:3490: checking if compiler accepts -arch x86_64 flag" >&5
+if eval "test \"`echo '$''{'tcl_cv_cc_arch_x86_64'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  
+			    hold_cflags=$CFLAGS
+			    CFLAGS="$CFLAGS -arch x86_64"
+			    cat > conftest.$ac_ext <<EOF
+#line 3498 "configure"
+#include "confdefs.h"
+
+int main() {
+
+; return 0; }
+EOF
+if { (eval echo configure:3505: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+  rm -rf conftest*
+  tcl_cv_cc_arch_x86_64=yes
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  tcl_cv_cc_arch_x86_64=no
+fi
+rm -f conftest*
+			    CFLAGS=$hold_cflags
+fi
+
+echo "$ac_t""$tcl_cv_cc_arch_x86_64" 1>&6
+			if test $tcl_cv_cc_arch_x86_64 = yes; then
+			    CFLAGS="$CFLAGS -arch x86_64"
+			    do64bit_ok=yes
+			fi;;
 		    *)
-			echo "configure: warning: Don't know how enable 64-bit on architecture `arch`" 1>&2
-			do64bit_ok=no;;
+			echo "configure: warning: Don't know how enable 64-bit on architecture `arch`" 1>&2;;
 		esac
 	    else
 		# Check for combined 32-bit and 64-bit fat build
@@ -3466,7 +3530,7 @@ echo "$ac_t""$tcl_cv_ld_elf" 1>&6
 	    fi
 	    SHLIB_LD='${CC} -dynamiclib ${CFLAGS} ${LDFLAGS}'
 	    echo $ac_n "checking if ld accepts -single_module flag""... $ac_c" 1>&6
-echo "configure:3470: checking if ld accepts -single_module flag" >&5
+echo "configure:3534: checking if ld accepts -single_module flag" >&5
 if eval "test \"`echo '$''{'tcl_cv_ld_single_module'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3474,14 +3538,14 @@ else
 		hold_ldflags=$LDFLAGS
 		LDFLAGS="$LDFLAGS -dynamiclib -Wl,-single_module"
 		cat > conftest.$ac_ext <<EOF
-#line 3478 "configure"
+#line 3542 "configure"
 #include "confdefs.h"
 
 int main() {
 int i;
 ; return 0; }
 EOF
-if { (eval echo configure:3485: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3549: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_cv_ld_single_module=yes
 else
@@ -3508,7 +3572,7 @@ echo "$ac_t""$tcl_cv_ld_single_module" 1>&6
 		LDFLAGS="$LDFLAGS -prebind"
 	    LDFLAGS="$LDFLAGS -headerpad_max_install_names"
 	    echo $ac_n "checking if ld accepts -search_paths_first flag""... $ac_c" 1>&6
-echo "configure:3512: checking if ld accepts -search_paths_first flag" >&5
+echo "configure:3576: checking if ld accepts -search_paths_first flag" >&5
 if eval "test \"`echo '$''{'tcl_cv_ld_search_paths_first'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3516,14 +3580,14 @@ else
 		hold_ldflags=$LDFLAGS
 		LDFLAGS="$LDFLAGS -Wl,-search_paths_first"
 		cat > conftest.$ac_ext <<EOF
-#line 3520 "configure"
+#line 3584 "configure"
 #include "confdefs.h"
 
 int main() {
 int i;
 ; return 0; }
 EOF
-if { (eval echo configure:3527: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3591: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_cv_ld_search_paths_first=yes
 else
@@ -3546,7 +3610,7 @@ echo "$ac_t""$tcl_cv_ld_search_paths_first" 1>&6
 	    PLAT_OBJS=\$\(MAC\_OSX_OBJS\)
 	    PLAT_SRCS=\$\(MAC\_OSX_SRCS\)
 	    echo $ac_n "checking whether to use CoreFoundation""... $ac_c" 1>&6
-echo "configure:3550: checking whether to use CoreFoundation" >&5
+echo "configure:3614: checking whether to use CoreFoundation" >&5
 	    # Check whether --enable-corefoundation or --disable-corefoundation was given.
 if test "${enable_corefoundation+set}" = set; then
   enableval="$enable_corefoundation"
@@ -3558,7 +3622,7 @@ fi
 	    echo "$ac_t""$tcl_corefoundation" 1>&6
 	    if test $tcl_corefoundation = yes; then
 		echo $ac_n "checking for CoreFoundation.framework""... $ac_c" 1>&6
-echo "configure:3562: checking for CoreFoundation.framework" >&5
+echo "configure:3626: checking for CoreFoundation.framework" >&5
 if eval "test \"`echo '$''{'tcl_cv_lib_corefoundation'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3572,14 +3636,14 @@ else
 		    fi
 		    LIBS="$LIBS -framework CoreFoundation"
 		    cat > conftest.$ac_ext <<EOF
-#line 3576 "configure"
+#line 3640 "configure"
 #include "confdefs.h"
 #include <CoreFoundation/CoreFoundation.h>
 int main() {
 CFBundleRef b = CFBundleGetMainBundle();
 ; return 0; }
 EOF
-if { (eval echo configure:3583: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3647: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_cv_lib_corefoundation=yes
 else
@@ -3604,7 +3668,7 @@ EOF
 		fi
 		if test "$fat_32_64" = yes -a $tcl_corefoundation = yes; then
 		    echo $ac_n "checking for 64-bit CoreFoundation""... $ac_c" 1>&6
-echo "configure:3608: checking for 64-bit CoreFoundation" >&5
+echo "configure:3672: checking for 64-bit CoreFoundation" >&5
 if eval "test \"`echo '$''{'tcl_cv_lib_corefoundation_64'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3612,14 +3676,14 @@ else
 			hold_cflags=$CFLAGS
 			CFLAGS="`echo "$CFLAGS " | sed -e 's/-arch ppc / /g' -e 's/-arch i386 / /g'`"
 			cat > conftest.$ac_ext <<EOF
-#line 3616 "configure"
+#line 3680 "configure"
 #include "confdefs.h"
 #include <CoreFoundation/CoreFoundation.h>
 int main() {
 CFBundleRef b = CFBundleGetMainBundle();
 ; return 0; }
 EOF
-if { (eval echo configure:3623: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3687: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_cv_lib_corefoundation_64=yes
 else
@@ -3932,7 +3996,7 @@ EOF
 	    # Some UNIX_SV* systems (unixware 1.1.2 for example) have linkers
 	    # that don't grok the -Bexport option.  Test that it does.
 	    echo $ac_n "checking for ld accepts -Bexport flag""... $ac_c" 1>&6
-echo "configure:3936: checking for ld accepts -Bexport flag" >&5
+echo "configure:4000: checking for ld accepts -Bexport flag" >&5
 if eval "test \"`echo '$''{'tcl_cv_ld_Bexport'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3940,14 +4004,14 @@ else
 		hold_ldflags=$LDFLAGS
 		LDFLAGS="$LDFLAGS -Wl,-Bexport"
 		cat > conftest.$ac_ext <<EOF
-#line 3944 "configure"
+#line 4008 "configure"
 #include "confdefs.h"
 
 int main() {
 int i;
 ; return 0; }
 EOF
-if { (eval echo configure:3951: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4015: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_cv_ld_Bexport=yes
 else
@@ -3994,13 +4058,13 @@ echo "$ac_t""$tcl_cv_ld_Bexport" 1>&6
 
     if test "x$DL_OBJS" = "xtclLoadAout.o" ; then
 	echo $ac_n "checking sys/exec.h""... $ac_c" 1>&6
-echo "configure:3998: checking sys/exec.h" >&5
+echo "configure:4062: checking sys/exec.h" >&5
 if eval "test \"`echo '$''{'tcl_cv_sysexec_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	cat > conftest.$ac_ext <<EOF
-#line 4004 "configure"
+#line 4068 "configure"
 #include "confdefs.h"
 #include <sys/exec.h>
 int main() {
@@ -4018,7 +4082,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:4022: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4086: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_sysexec_h=usable
 else
@@ -4038,13 +4102,13 @@ EOF
 
 	else
 	    echo $ac_n "checking a.out.h""... $ac_c" 1>&6
-echo "configure:4042: checking a.out.h" >&5
+echo "configure:4106: checking a.out.h" >&5
 if eval "test \"`echo '$''{'tcl_cv_aout_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	    cat > conftest.$ac_ext <<EOF
-#line 4048 "configure"
+#line 4112 "configure"
 #include "confdefs.h"
 #include <a.out.h>
 int main() {
@@ -4062,7 +4126,7 @@ int main() {
 	    
 ; return 0; }
 EOF
-if { (eval echo configure:4066: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4130: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_aout_h=usable
 else
@@ -4082,13 +4146,13 @@ EOF
 
 	    else
 		echo $ac_n "checking sys/exec_aout.h""... $ac_c" 1>&6
-echo "configure:4086: checking sys/exec_aout.h" >&5
+echo "configure:4150: checking sys/exec_aout.h" >&5
 if eval "test \"`echo '$''{'tcl_cv_sysexecaout_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 		cat > conftest.$ac_ext <<EOF
-#line 4092 "configure"
+#line 4156 "configure"
 #include "confdefs.h"
 #include <sys/exec_aout.h>
 int main() {
@@ -4106,7 +4170,7 @@ int main() {
 		
 ; return 0; }
 EOF
-if { (eval echo configure:4110: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4174: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_sysexecaout_h=usable
 else
@@ -4259,7 +4323,7 @@ fi
 
 
     echo $ac_n "checking for build with symbols""... $ac_c" 1>&6
-echo "configure:4263: checking for build with symbols" >&5
+echo "configure:4327: checking for build with symbols" >&5
     # Check whether --enable-symbols or --disable-symbols was given.
 if test "${enable_symbols+set}" = set; then
   enableval="$enable_symbols"
@@ -4320,21 +4384,21 @@ TCL_DBGX=${DBGX}
 
 
     echo $ac_n "checking for required early compiler flags""... $ac_c" 1>&6
-echo "configure:4324: checking for required early compiler flags" >&5
+echo "configure:4388: checking for required early compiler flags" >&5
     tcl_flags=""
     
     if eval "test \"`echo '$''{'tcl_cv_flag__isoc99_source'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4331 "configure"
+#line 4395 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 int main() {
 char *p = (char *)strtoll; char *q = (char *)strtoull;
 ; return 0; }
 EOF
-if { (eval echo configure:4338: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4402: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__isoc99_source=no
 else
@@ -4342,7 +4406,7 @@ else
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   cat > conftest.$ac_ext <<EOF
-#line 4346 "configure"
+#line 4410 "configure"
 #include "confdefs.h"
 #define _ISOC99_SOURCE 1
 #include <stdlib.h>
@@ -4350,7 +4414,7 @@ int main() {
 char *p = (char *)strtoll; char *q = (char *)strtoull;
 ; return 0; }
 EOF
-if { (eval echo configure:4354: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4418: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__isoc99_source=yes
 else
@@ -4377,14 +4441,14 @@ EOF
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4381 "configure"
+#line 4445 "configure"
 #include "confdefs.h"
 #include <sys/stat.h>
 int main() {
 struct stat64 buf; int i = stat64("/", &buf);
 ; return 0; }
 EOF
-if { (eval echo configure:4388: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4452: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__largefile64_source=no
 else
@@ -4392,7 +4456,7 @@ else
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   cat > conftest.$ac_ext <<EOF
-#line 4396 "configure"
+#line 4460 "configure"
 #include "confdefs.h"
 #define _LARGEFILE64_SOURCE 1
 #include <sys/stat.h>
@@ -4400,7 +4464,7 @@ int main() {
 struct stat64 buf; int i = stat64("/", &buf);
 ; return 0; }
 EOF
-if { (eval echo configure:4404: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4468: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__largefile64_source=yes
 else
@@ -4427,14 +4491,14 @@ EOF
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4431 "configure"
+#line 4495 "configure"
 #include "confdefs.h"
 #include <sys/stat.h>
 int main() {
 char *p = (char *)open64;
 ; return 0; }
 EOF
-if { (eval echo configure:4438: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4502: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__largefile_source64=no
 else
@@ -4442,7 +4506,7 @@ else
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   cat > conftest.$ac_ext <<EOF
-#line 4446 "configure"
+#line 4510 "configure"
 #include "confdefs.h"
 #define _LARGEFILE_SOURCE64 1
 #include <sys/stat.h>
@@ -4450,7 +4514,7 @@ int main() {
 char *p = (char *)open64;
 ; return 0; }
 EOF
-if { (eval echo configure:4454: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4518: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__largefile_source64=yes
 else
@@ -4481,7 +4545,7 @@ EOF
 
 
     echo $ac_n "checking for 64-bit integer type""... $ac_c" 1>&6
-echo "configure:4485: checking for 64-bit integer type" >&5
+echo "configure:4549: checking for 64-bit integer type" >&5
     if eval "test \"`echo '$''{'tcl_cv_type_64bit'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -4489,14 +4553,14 @@ else
 	tcl_cv_type_64bit=none
 	# See if the compiler knows natively about __int64
 	cat > conftest.$ac_ext <<EOF
-#line 4493 "configure"
+#line 4557 "configure"
 #include "confdefs.h"
 
 int main() {
 __int64 value = (__int64) 0;
 ; return 0; }
 EOF
-if { (eval echo configure:4500: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4564: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_type_64bit=__int64
 else
@@ -4510,7 +4574,7 @@ rm -f conftest*
 	# type that is our current guess for a 64-bit type inside this check
 	# program, so it should be modified only carefully...
         cat > conftest.$ac_ext <<EOF
-#line 4514 "configure"
+#line 4578 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -4519,7 +4583,7 @@ switch (0) {
         }
 ; return 0; }
 EOF
-if { (eval echo configure:4523: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4587: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_type_64bit=${tcl_type_64bit}
 else
@@ -4544,13 +4608,13 @@ EOF
 
 	# Now check for auxiliary declarations
 	echo $ac_n "checking for struct dirent64""... $ac_c" 1>&6
-echo "configure:4548: checking for struct dirent64" >&5
+echo "configure:4612: checking for struct dirent64" >&5
 if eval "test \"`echo '$''{'tcl_cv_struct_dirent64'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	    cat > conftest.$ac_ext <<EOF
-#line 4554 "configure"
+#line 4618 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/dirent.h>
@@ -4558,7 +4622,7 @@ int main() {
 struct dirent64 p;
 ; return 0; }
 EOF
-if { (eval echo configure:4562: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4626: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_struct_dirent64=yes
 else
@@ -4579,13 +4643,13 @@ EOF
 	fi
 
 	echo $ac_n "checking for struct stat64""... $ac_c" 1>&6
-echo "configure:4583: checking for struct stat64" >&5
+echo "configure:4647: checking for struct stat64" >&5
 if eval "test \"`echo '$''{'tcl_cv_struct_stat64'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	    cat > conftest.$ac_ext <<EOF
-#line 4589 "configure"
+#line 4653 "configure"
 #include "confdefs.h"
 #include <sys/stat.h>
 int main() {
@@ -4593,7 +4657,7 @@ struct stat64 p;
 
 ; return 0; }
 EOF
-if { (eval echo configure:4597: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4661: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_struct_stat64=yes
 else
@@ -4616,12 +4680,12 @@ EOF
 	for ac_func in open64 lseek64
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:4620: checking for $ac_func" >&5
+echo "configure:4684: 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 4625 "configure"
+#line 4689 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -4644,7 +4708,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4648: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4712: \"$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
@@ -4669,13 +4733,13 @@ fi
 done
 
 	echo $ac_n "checking for off64_t""... $ac_c" 1>&6
-echo "configure:4673: checking for off64_t" >&5
+echo "configure:4737: checking for off64_t" >&5
 	if eval "test \"`echo '$''{'tcl_cv_type_off64_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	    cat > conftest.$ac_ext <<EOF
-#line 4679 "configure"
+#line 4743 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 int main() {
@@ -4683,7 +4747,7 @@ off64_t offset;
 
 ; return 0; }
 EOF
-if { (eval echo configure:4687: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4751: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_type_off64_t=yes
 else
@@ -4715,14 +4779,14 @@ EOF
 #--------------------------------------------------------------------
 
 echo $ac_n "checking whether byte ordering is bigendian""... $ac_c" 1>&6
-echo "configure:4719: checking whether byte ordering is bigendian" >&5
+echo "configure:4783: checking whether byte ordering is bigendian" >&5
 if eval "test \"`echo '$''{'ac_cv_c_bigendian'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_cv_c_bigendian=unknown
 # See if sys/param.h defines the BYTE_ORDER macro.
 cat > conftest.$ac_ext <<EOF
-#line 4726 "configure"
+#line 4790 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/param.h>
@@ -4733,11 +4797,11 @@ int main() {
 #endif
 ; return 0; }
 EOF
-if { (eval echo configure:4737: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4801: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   # It does; now see whether it defined to BIG_ENDIAN or not.
 cat > conftest.$ac_ext <<EOF
-#line 4741 "configure"
+#line 4805 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/param.h>
@@ -4748,7 +4812,7 @@ int main() {
 #endif
 ; return 0; }
 EOF
-if { (eval echo configure:4752: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4816: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_bigendian=yes
 else
@@ -4768,7 +4832,7 @@ if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 4772 "configure"
+#line 4836 "configure"
 #include "confdefs.h"
 main () {
   /* Are we little or big endian?  From Harbison&Steele.  */
@@ -4781,7 +4845,7 @@ main () {
   exit (u.c[sizeof (long) - 1] == 1);
 }
 EOF
-if { (eval echo configure:4785: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:4849: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_c_bigendian=no
 else
@@ -4814,12 +4878,12 @@ fi
 for ac_func in getcwd
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:4818: checking for $ac_func" >&5
+echo "configure:4882: 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 4823 "configure"
+#line 4887 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -4842,7 +4906,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4846: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4910: \"$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
@@ -4876,12 +4940,12 @@ done
 for ac_func in opendir strstr strtol strtoll strtoull tmpnam waitpid
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:4880: checking for $ac_func" >&5
+echo "configure:4944: 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 4885 "configure"
+#line 4949 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -4904,7 +4968,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4908: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4972: \"$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
@@ -4931,12 +4995,12 @@ done
 
 
 echo $ac_n "checking for strerror""... $ac_c" 1>&6
-echo "configure:4935: checking for strerror" >&5
+echo "configure:4999: checking for strerror" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strerror'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4940 "configure"
+#line 5004 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strerror(); below.  */
@@ -4959,7 +5023,7 @@ strerror();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4963: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5027: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_strerror=yes"
 else
@@ -4983,12 +5047,12 @@ EOF
 fi
 
 echo $ac_n "checking for getwd""... $ac_c" 1>&6
-echo "configure:4987: checking for getwd" >&5
+echo "configure:5051: checking for getwd" >&5
 if eval "test \"`echo '$''{'ac_cv_func_getwd'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4992 "configure"
+#line 5056 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char getwd(); below.  */
@@ -5011,7 +5075,7 @@ getwd();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5015: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5079: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_getwd=yes"
 else
@@ -5035,12 +5099,12 @@ EOF
 fi
 
 echo $ac_n "checking for wait3""... $ac_c" 1>&6
-echo "configure:5039: checking for wait3" >&5
+echo "configure:5103: checking for wait3" >&5
 if eval "test \"`echo '$''{'ac_cv_func_wait3'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5044 "configure"
+#line 5108 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char wait3(); below.  */
@@ -5063,7 +5127,7 @@ wait3();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5067: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5131: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_wait3=yes"
 else
@@ -5087,12 +5151,12 @@ EOF
 fi
 
 echo $ac_n "checking for uname""... $ac_c" 1>&6
-echo "configure:5091: checking for uname" >&5
+echo "configure:5155: checking for uname" >&5
 if eval "test \"`echo '$''{'ac_cv_func_uname'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5096 "configure"
+#line 5160 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char uname(); below.  */
@@ -5115,7 +5179,7 @@ uname();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5119: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5183: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_uname=yes"
 else
@@ -5146,12 +5210,12 @@ if test "`uname -s`" = "Darwin" && test "${TCL_THREADS}" = 1 && \
     ac_cv_func_realpath=no
 fi
 echo $ac_n "checking for realpath""... $ac_c" 1>&6
-echo "configure:5150: checking for realpath" >&5
+echo "configure:5214: checking for realpath" >&5
 if eval "test \"`echo '$''{'ac_cv_func_realpath'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5155 "configure"
+#line 5219 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char realpath(); below.  */
@@ -5174,7 +5238,7 @@ realpath();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5178: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5242: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_realpath=yes"
 else
@@ -5204,12 +5268,12 @@ fi
 
 if test "${TCL_THREADS}" = 1; then
     echo $ac_n "checking for getpwuid_r""... $ac_c" 1>&6
-echo "configure:5208: checking for getpwuid_r" >&5
+echo "configure:5272: checking for getpwuid_r" >&5
 if eval "test \"`echo '$''{'ac_cv_func_getpwuid_r'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5213 "configure"
+#line 5277 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char getpwuid_r(); below.  */
@@ -5232,7 +5296,7 @@ getpwuid_r();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5236: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5300: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_getpwuid_r=yes"
 else
@@ -5248,13 +5312,13 @@ if eval "test \"`echo '$ac_cv_func_'getpwuid_r`\" = yes"; then
   echo "$ac_t""yes" 1>&6
   
     echo $ac_n "checking for getpwuid_r with 5 args""... $ac_c" 1>&6
-echo "configure:5252: checking for getpwuid_r with 5 args" >&5
+echo "configure:5316: checking for getpwuid_r with 5 args" >&5
 if eval "test \"`echo '$''{'tcl_cv_api_getpwuid_r_5'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
     cat > conftest.$ac_ext <<EOF
-#line 5258 "configure"
+#line 5322 "configure"
 #include "confdefs.h"
 
 	#include <sys/types.h>
@@ -5271,7 +5335,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:5275: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5339: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_api_getpwuid_r_5=yes
 else
@@ -5292,13 +5356,13 @@ EOF
 
     else
 	echo $ac_n "checking for getpwuid_r with 4 args""... $ac_c" 1>&6
-echo "configure:5296: checking for getpwuid_r with 4 args" >&5
+echo "configure:5360: checking for getpwuid_r with 4 args" >&5
 if eval "test \"`echo '$''{'tcl_cv_api_getpwuid_r_4'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	cat > conftest.$ac_ext <<EOF
-#line 5302 "configure"
+#line 5366 "configure"
 #include "confdefs.h"
 
 	    #include <sys/types.h>
@@ -5315,7 +5379,7 @@ int main() {
 	
 ; return 0; }
 EOF
-if { (eval echo configure:5319: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5383: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_api_getpwuid_r_4=yes
 else
@@ -5348,12 +5412,12 @@ else
 fi
 
     echo $ac_n "checking for getpwnam_r""... $ac_c" 1>&6
-echo "configure:5352: checking for getpwnam_r" >&5
+echo "configure:5416: checking for getpwnam_r" >&5
 if eval "test \"`echo '$''{'ac_cv_func_getpwnam_r'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5357 "configure"
+#line 5421 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char getpwnam_r(); below.  */
@@ -5376,7 +5440,7 @@ getpwnam_r();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5380: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5444: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_getpwnam_r=yes"
 else
@@ -5392,13 +5456,13 @@ if eval "test \"`echo '$ac_cv_func_'getpwnam_r`\" = yes"; then
   echo "$ac_t""yes" 1>&6
   
     echo $ac_n "checking for getpwnam_r with 5 args""... $ac_c" 1>&6
-echo "configure:5396: checking for getpwnam_r with 5 args" >&5
+echo "configure:5460: checking for getpwnam_r with 5 args" >&5
 if eval "test \"`echo '$''{'tcl_cv_api_getpwnam_r_5'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
     cat > conftest.$ac_ext <<EOF
-#line 5402 "configure"
+#line 5466 "configure"
 #include "confdefs.h"
 
 	#include <sys/types.h>
@@ -5415,7 +5479,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:5419: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5483: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_api_getpwnam_r_5=yes
 else
@@ -5436,13 +5500,13 @@ EOF
 
     else
 	echo $ac_n "checking for getpwnam_r with 4 args""... $ac_c" 1>&6
-echo "configure:5440: checking for getpwnam_r with 4 args" >&5
+echo "configure:5504: checking for getpwnam_r with 4 args" >&5
 if eval "test \"`echo '$''{'tcl_cv_api_getpwnam_r_4'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	cat > conftest.$ac_ext <<EOF
-#line 5446 "configure"
+#line 5510 "configure"
 #include "confdefs.h"
 
 	    #include <sys/types.h>
@@ -5459,7 +5523,7 @@ int main() {
 	
 ; return 0; }
 EOF
-if { (eval echo configure:5463: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5527: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_api_getpwnam_r_4=yes
 else
@@ -5492,12 +5556,12 @@ else
 fi
 
     echo $ac_n "checking for getgrgid_r""... $ac_c" 1>&6
-echo "configure:5496: checking for getgrgid_r" >&5
+echo "configure:5560: checking for getgrgid_r" >&5
 if eval "test \"`echo '$''{'ac_cv_func_getgrgid_r'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5501 "configure"
+#line 5565 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char getgrgid_r(); below.  */
@@ -5520,7 +5584,7 @@ getgrgid_r();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5524: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5588: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_getgrgid_r=yes"
 else
@@ -5536,13 +5600,13 @@ if eval "test \"`echo '$ac_cv_func_'getgrgid_r`\" = yes"; then
   echo "$ac_t""yes" 1>&6
   
     echo $ac_n "checking for getgrgid_r with 5 args""... $ac_c" 1>&6
-echo "configure:5540: checking for getgrgid_r with 5 args" >&5
+echo "configure:5604: checking for getgrgid_r with 5 args" >&5
 if eval "test \"`echo '$''{'tcl_cv_api_getgrgid_r_5'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
     cat > conftest.$ac_ext <<EOF
-#line 5546 "configure"
+#line 5610 "configure"
 #include "confdefs.h"
 
 	#include <sys/types.h>
@@ -5559,7 +5623,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:5563: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5627: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_api_getgrgid_r_5=yes
 else
@@ -5580,13 +5644,13 @@ EOF
 
     else
 	echo $ac_n "checking for getgrgid_r with 4 args""... $ac_c" 1>&6
-echo "configure:5584: checking for getgrgid_r with 4 args" >&5
+echo "configure:5648: checking for getgrgid_r with 4 args" >&5
 if eval "test \"`echo '$''{'tcl_cv_api_getgrgid_r_4'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	cat > conftest.$ac_ext <<EOF
-#line 5590 "configure"
+#line 5654 "configure"
 #include "confdefs.h"
 
 	    #include <sys/types.h>
@@ -5603,7 +5667,7 @@ int main() {
 	
 ; return 0; }
 EOF
-if { (eval echo configure:5607: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5671: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_api_getgrgid_r_4=yes
 else
@@ -5636,12 +5700,12 @@ else
 fi
 
     echo $ac_n "checking for getgrnam_r""... $ac_c" 1>&6
-echo "configure:5640: checking for getgrnam_r" >&5
+echo "configure:5704: checking for getgrnam_r" >&5
 if eval "test \"`echo '$''{'ac_cv_func_getgrnam_r'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5645 "configure"
+#line 5709 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char getgrnam_r(); below.  */
@@ -5664,7 +5728,7 @@ getgrnam_r();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5668: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5732: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_getgrnam_r=yes"
 else
@@ -5680,13 +5744,13 @@ if eval "test \"`echo '$ac_cv_func_'getgrnam_r`\" = yes"; then
   echo "$ac_t""yes" 1>&6
   
     echo $ac_n "checking for getgrnam_r with 5 args""... $ac_c" 1>&6
-echo "configure:5684: checking for getgrnam_r with 5 args" >&5
+echo "configure:5748: checking for getgrnam_r with 5 args" >&5
 if eval "test \"`echo '$''{'tcl_cv_api_getgrnam_r_5'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
     cat > conftest.$ac_ext <<EOF
-#line 5690 "configure"
+#line 5754 "configure"
 #include "confdefs.h"
 
 	#include <sys/types.h>
@@ -5703,7 +5767,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:5707: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5771: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_api_getgrnam_r_5=yes
 else
@@ -5724,13 +5788,13 @@ EOF
 
     else
 	echo $ac_n "checking for getgrnam_r with 4 args""... $ac_c" 1>&6
-echo "configure:5728: checking for getgrnam_r with 4 args" >&5
+echo "configure:5792: checking for getgrnam_r with 4 args" >&5
 if eval "test \"`echo '$''{'tcl_cv_api_getgrnam_r_4'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	cat > conftest.$ac_ext <<EOF
-#line 5734 "configure"
+#line 5798 "configure"
 #include "confdefs.h"
 
 	    #include <sys/types.h>
@@ -5747,7 +5811,7 @@ int main() {
 	
 ; return 0; }
 EOF
-if { (eval echo configure:5751: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5815: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_api_getgrnam_r_4=yes
 else
@@ -5807,12 +5871,12 @@ EOF
 
     else
 	echo $ac_n "checking for gethostbyname_r""... $ac_c" 1>&6
-echo "configure:5811: checking for gethostbyname_r" >&5
+echo "configure:5875: checking for gethostbyname_r" >&5
 if eval "test \"`echo '$''{'ac_cv_func_gethostbyname_r'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5816 "configure"
+#line 5880 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char gethostbyname_r(); below.  */
@@ -5835,7 +5899,7 @@ gethostbyname_r();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5839: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5903: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_gethostbyname_r=yes"
 else
@@ -5851,13 +5915,13 @@ if eval "test \"`echo '$ac_cv_func_'gethostbyname_r`\" = yes"; then
   echo "$ac_t""yes" 1>&6
   
     echo $ac_n "checking for gethostbyname_r with 6 args""... $ac_c" 1>&6
-echo "configure:5855: checking for gethostbyname_r with 6 args" >&5
+echo "configure:5919: checking for gethostbyname_r with 6 args" >&5
 if eval "test \"`echo '$''{'tcl_cv_api_gethostbyname_r_6'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
     cat > conftest.$ac_ext <<EOF
-#line 5861 "configure"
+#line 5925 "configure"
 #include "confdefs.h"
 
 	#include <netdb.h>
@@ -5874,7 +5938,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:5878: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5942: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_api_gethostbyname_r_6=yes
 else
@@ -5895,13 +5959,13 @@ EOF
 
     else
 	echo $ac_n "checking for gethostbyname_r with 5 args""... $ac_c" 1>&6
-echo "configure:5899: checking for gethostbyname_r with 5 args" >&5
+echo "configure:5963: checking for gethostbyname_r with 5 args" >&5
 if eval "test \"`echo '$''{'tcl_cv_api_gethostbyname_r_5'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	cat > conftest.$ac_ext <<EOF
-#line 5905 "configure"
+#line 5969 "configure"
 #include "confdefs.h"
 
 	    #include <netdb.h>
@@ -5918,7 +5982,7 @@ int main() {
 	
 ; return 0; }
 EOF
-if { (eval echo configure:5922: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5986: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_api_gethostbyname_r_5=yes
 else
@@ -5939,13 +6003,13 @@ EOF
 
 	else
 	    echo $ac_n "checking for gethostbyname_r with 3 args""... $ac_c" 1>&6
-echo "configure:5943: checking for gethostbyname_r with 3 args" >&5
+echo "configure:6007: checking for gethostbyname_r with 3 args" >&5
 if eval "test \"`echo '$''{'tcl_cv_api_gethostbyname_r_3'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	    cat > conftest.$ac_ext <<EOF
-#line 5949 "configure"
+#line 6013 "configure"
 #include "confdefs.h"
 
 		#include <netdb.h>
@@ -5960,7 +6024,7 @@ int main() {
 	    
 ; return 0; }
 EOF
-if { (eval echo configure:5964: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6028: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_api_gethostbyname_r_3=yes
 else
@@ -5994,12 +6058,12 @@ else
 fi
 
 	echo $ac_n "checking for gethostbyaddr_r""... $ac_c" 1>&6
-echo "configure:5998: checking for gethostbyaddr_r" >&5
+echo "configure:6062: checking for gethostbyaddr_r" >&5
 if eval "test \"`echo '$''{'ac_cv_func_gethostbyaddr_r'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6003 "configure"
+#line 6067 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char gethostbyaddr_r(); below.  */
@@ -6022,7 +6086,7 @@ gethostbyaddr_r();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6026: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6090: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_gethostbyaddr_r=yes"
 else
@@ -6038,13 +6102,13 @@ if eval "test \"`echo '$ac_cv_func_'gethostbyaddr_r`\" = yes"; then
   echo "$ac_t""yes" 1>&6
   
     echo $ac_n "checking for gethostbyaddr_r with 7 args""... $ac_c" 1>&6
-echo "configure:6042: checking for gethostbyaddr_r with 7 args" >&5
+echo "configure:6106: checking for gethostbyaddr_r with 7 args" >&5
 if eval "test \"`echo '$''{'tcl_cv_api_gethostbyaddr_r_7'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
     cat > conftest.$ac_ext <<EOF
-#line 6048 "configure"
+#line 6112 "configure"
 #include "confdefs.h"
 
 	#include <netdb.h>
@@ -6064,7 +6128,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:6068: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6132: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_api_gethostbyaddr_r_7=yes
 else
@@ -6085,13 +6149,13 @@ EOF
 
     else
 	echo $ac_n "checking for gethostbyaddr_r with 8 args""... $ac_c" 1>&6
-echo "configure:6089: checking for gethostbyaddr_r with 8 args" >&5
+echo "configure:6153: checking for gethostbyaddr_r with 8 args" >&5
 if eval "test \"`echo '$''{'tcl_cv_api_gethostbyaddr_r_8'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	cat > conftest.$ac_ext <<EOF
-#line 6095 "configure"
+#line 6159 "configure"
 #include "confdefs.h"
 
 	    #include <netdb.h>
@@ -6111,7 +6175,7 @@ int main() {
 	
 ; return 0; }
 EOF
-if { (eval echo configure:6115: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6179: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_api_gethostbyaddr_r_8=yes
 else
@@ -6157,17 +6221,17 @@ fi
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:6161: checking for $ac_hdr" >&5
+echo "configure:6225: 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 6166 "configure"
+#line 6230 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:6171: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:6235: \"$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*
@@ -6194,7 +6258,7 @@ fi
 done
 
     echo $ac_n "checking termios vs. termio vs. sgtty""... $ac_c" 1>&6
-echo "configure:6198: checking termios vs. termio vs. sgtty" >&5
+echo "configure:6262: checking termios vs. termio vs. sgtty" >&5
 if eval "test \"`echo '$''{'tcl_cv_api_serial'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6203,7 +6267,7 @@ else
   tcl_cv_api_serial=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 6207 "configure"
+#line 6271 "configure"
 #include "confdefs.h"
 
 #include <termios.h>
@@ -6218,7 +6282,7 @@ int main() {
     return 1;
 }
 EOF
-if { (eval echo configure:6222: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6286: \"$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
@@ -6235,7 +6299,7 @@ fi
   tcl_cv_api_serial=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 6239 "configure"
+#line 6303 "configure"
 #include "confdefs.h"
 
 #include <termio.h>
@@ -6249,7 +6313,7 @@ int main() {
     return 1;
 }
 EOF
-if { (eval echo configure:6253: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6317: \"$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
@@ -6267,7 +6331,7 @@ fi
   tcl_cv_api_serial=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 6271 "configure"
+#line 6335 "configure"
 #include "confdefs.h"
 
 #include <sgtty.h>
@@ -6282,7 +6346,7 @@ int main() {
     return 1;
 }
 EOF
-if { (eval echo configure:6286: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6350: \"$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
@@ -6300,7 +6364,7 @@ fi
   tcl_cv_api_serial=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 6304 "configure"
+#line 6368 "configure"
 #include "confdefs.h"
 
 #include <termios.h>
@@ -6317,7 +6381,7 @@ int main() {
     return 1;
 }
 EOF
-if { (eval echo configure:6321: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6385: \"$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
@@ -6335,7 +6399,7 @@ fi
   tcl_cv_api_serial=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 6339 "configure"
+#line 6403 "configure"
 #include "confdefs.h"
 
 #include <termio.h>
@@ -6351,7 +6415,7 @@ int main() {
     return 1;
     }
 EOF
-if { (eval echo configure:6355: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6419: \"$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
@@ -6369,7 +6433,7 @@ fi
   tcl_cv_api_serial=none
 else
   cat > conftest.$ac_ext <<EOF
-#line 6373 "configure"
+#line 6437 "configure"
 #include "confdefs.h"
 
 #include <sgtty.h>
@@ -6386,7 +6450,7 @@ int main() {
     return 1;
 }
 EOF
-if { (eval echo configure:6390: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6454: \"$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
@@ -6429,20 +6493,20 @@ EOF
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for fd_set in sys/types""... $ac_c" 1>&6
-echo "configure:6433: checking for fd_set in sys/types" >&5
+echo "configure:6497: checking for fd_set in sys/types" >&5
 if eval "test \"`echo '$''{'tcl_cv_type_fd_set'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
     cat > conftest.$ac_ext <<EOF
-#line 6439 "configure"
+#line 6503 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 int main() {
 fd_set readMask, writeMask;
 ; return 0; }
 EOF
-if { (eval echo configure:6446: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6510: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_type_fd_set=yes
 else
@@ -6458,13 +6522,13 @@ echo "$ac_t""$tcl_cv_type_fd_set" 1>&6
 tcl_ok=$tcl_cv_type_fd_set
 if test $tcl_ok = no; then
     echo $ac_n "checking for fd_mask in sys/select""... $ac_c" 1>&6
-echo "configure:6462: checking for fd_mask in sys/select" >&5
+echo "configure:6526: checking for fd_mask in sys/select" >&5
 if eval "test \"`echo '$''{'tcl_cv_grep_fd_mask'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	cat > conftest.$ac_ext <<EOF
-#line 6468 "configure"
+#line 6532 "configure"
 #include "confdefs.h"
 #include <sys/select.h>
 EOF
@@ -6501,12 +6565,12 @@ fi
 #------------------------------------------------------------------------------
 
 echo $ac_n "checking whether struct tm is in sys/time.h or time.h""... $ac_c" 1>&6
-echo "configure:6505: checking whether struct tm is in sys/time.h or time.h" >&5
+echo "configure:6569: checking whether struct tm is in sys/time.h or time.h" >&5
 if eval "test \"`echo '$''{'ac_cv_struct_tm'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6510 "configure"
+#line 6574 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <time.h>
@@ -6514,7 +6578,7 @@ int main() {
 struct tm *tp; tp->tm_sec;
 ; return 0; }
 EOF
-if { (eval echo configure:6518: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6582: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_struct_tm=time.h
 else
@@ -6539,17 +6603,17 @@ fi
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:6543: checking for $ac_hdr" >&5
+echo "configure:6607: 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 6548 "configure"
+#line 6612 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:6553: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:6617: \"$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*
@@ -6576,12 +6640,12 @@ fi
 done
 
     echo $ac_n "checking whether time.h and sys/time.h may both be included""... $ac_c" 1>&6
-echo "configure:6580: checking whether time.h and sys/time.h may both be included" >&5
+echo "configure:6644: checking whether time.h and sys/time.h may both be included" >&5
 if eval "test \"`echo '$''{'ac_cv_header_time'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6585 "configure"
+#line 6649 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/time.h>
@@ -6590,7 +6654,7 @@ int main() {
 struct tm *tp;
 ; return 0; }
 EOF
-if { (eval echo configure:6594: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6658: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_header_time=yes
 else
@@ -6611,12 +6675,12 @@ EOF
 fi
 
     echo $ac_n "checking for tm_zone in struct tm""... $ac_c" 1>&6
-echo "configure:6615: checking for tm_zone in struct tm" >&5
+echo "configure:6679: checking for tm_zone in struct tm" >&5
 if eval "test \"`echo '$''{'ac_cv_struct_tm_zone'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6620 "configure"
+#line 6684 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <$ac_cv_struct_tm>
@@ -6624,7 +6688,7 @@ int main() {
 struct tm tm; tm.tm_zone;
 ; return 0; }
 EOF
-if { (eval echo configure:6628: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6692: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_struct_tm_zone=yes
 else
@@ -6644,12 +6708,12 @@ EOF
 
 else
   echo $ac_n "checking for tzname""... $ac_c" 1>&6
-echo "configure:6648: checking for tzname" >&5
+echo "configure:6712: checking for tzname" >&5
 if eval "test \"`echo '$''{'ac_cv_var_tzname'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6653 "configure"
+#line 6717 "configure"
 #include "confdefs.h"
 #include <time.h>
 #ifndef tzname /* For SGI.  */
@@ -6659,7 +6723,7 @@ int main() {
 atoi(*tzname);
 ; return 0; }
 EOF
-if { (eval echo configure:6663: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6727: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   ac_cv_var_tzname=yes
 else
@@ -6684,12 +6748,12 @@ fi
     for ac_func in gmtime_r localtime_r
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:6688: checking for $ac_func" >&5
+echo "configure:6752: 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 6693 "configure"
+#line 6757 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -6712,7 +6776,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6716: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6780: \"$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
@@ -6738,20 +6802,20 @@ done
 
 
     echo $ac_n "checking tm_tzadj in struct tm""... $ac_c" 1>&6
-echo "configure:6742: checking tm_tzadj in struct tm" >&5
+echo "configure:6806: checking tm_tzadj in struct tm" >&5
 if eval "test \"`echo '$''{'tcl_cv_member_tm_tzadj'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	cat > conftest.$ac_ext <<EOF
-#line 6748 "configure"
+#line 6812 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
 struct tm tm; tm.tm_tzadj;
 ; return 0; }
 EOF
-if { (eval echo configure:6755: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6819: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_member_tm_tzadj=yes
 else
@@ -6772,20 +6836,20 @@ EOF
     fi
 
     echo $ac_n "checking tm_gmtoff in struct tm""... $ac_c" 1>&6
-echo "configure:6776: checking tm_gmtoff in struct tm" >&5
+echo "configure:6840: checking tm_gmtoff in struct tm" >&5
 if eval "test \"`echo '$''{'tcl_cv_member_tm_gmtoff'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	cat > conftest.$ac_ext <<EOF
-#line 6782 "configure"
+#line 6846 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
 struct tm tm; tm.tm_gmtoff;
 ; return 0; }
 EOF
-if { (eval echo configure:6789: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6853: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_member_tm_gmtoff=yes
 else
@@ -6810,13 +6874,13 @@ EOF
     # (like convex) have timezone functions, etc.
     #
     echo $ac_n "checking long timezone variable""... $ac_c" 1>&6
-echo "configure:6814: checking long timezone variable" >&5
+echo "configure:6878: checking long timezone variable" >&5
 if eval "test \"`echo '$''{'tcl_cv_timezone_long'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	cat > conftest.$ac_ext <<EOF
-#line 6820 "configure"
+#line 6884 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
@@ -6825,7 +6889,7 @@ extern long timezone;
 	    exit (0);
 ; return 0; }
 EOF
-if { (eval echo configure:6829: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6893: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_timezone_long=yes
 else
@@ -6848,13 +6912,13 @@ 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""... $ac_c" 1>&6
-echo "configure:6852: checking time_t timezone variable" >&5
+echo "configure:6916: checking time_t timezone variable" >&5
 if eval "test \"`echo '$''{'tcl_cv_timezone_time'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	    cat > conftest.$ac_ext <<EOF
-#line 6858 "configure"
+#line 6922 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
@@ -6863,7 +6927,7 @@ extern time_t timezone;
 		exit (0);
 ; return 0; }
 EOF
-if { (eval echo configure:6867: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6931: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_timezone_time=yes
 else
@@ -6890,12 +6954,12 @@ EOF
 #	in struct stat.  But we might be able to use fstatfs instead.
 #--------------------------------------------------------------------
 echo $ac_n "checking for st_blksize in struct stat""... $ac_c" 1>&6
-echo "configure:6894: checking for st_blksize in struct stat" >&5
+echo "configure:6958: checking for st_blksize in struct stat" >&5
 if eval "test \"`echo '$''{'ac_cv_struct_st_blksize'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6899 "configure"
+#line 6963 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -6903,7 +6967,7 @@ int main() {
 struct stat s; s.st_blksize;
 ; return 0; }
 EOF
-if { (eval echo configure:6907: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:6971: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_struct_st_blksize=yes
 else
@@ -6924,12 +6988,12 @@ EOF
 fi
 
 echo $ac_n "checking for fstatfs""... $ac_c" 1>&6
-echo "configure:6928: checking for fstatfs" >&5
+echo "configure:6992: checking for fstatfs" >&5
 if eval "test \"`echo '$''{'ac_cv_func_fstatfs'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6933 "configure"
+#line 6997 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char fstatfs(); below.  */
@@ -6952,7 +7016,7 @@ fstatfs();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6956: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7020: \"$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
@@ -6981,7 +7045,7 @@ fi
 #       data, this checks it and add memcmp.o to LIBOBJS if needed
 #--------------------------------------------------------------------
 echo $ac_n "checking for 8-bit clean memcmp""... $ac_c" 1>&6
-echo "configure:6985: checking for 8-bit clean memcmp" >&5
+echo "configure:7049: checking for 8-bit clean memcmp" >&5
 if eval "test \"`echo '$''{'ac_cv_func_memcmp_clean'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6989,7 +7053,7 @@ else
   ac_cv_func_memcmp_clean=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 6993 "configure"
+#line 7057 "configure"
 #include "confdefs.h"
 
 main()
@@ -6999,7 +7063,7 @@ main()
 }
 
 EOF
-if { (eval echo configure:7003: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:7067: \"$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
@@ -7023,12 +7087,12 @@ 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""... $ac_c" 1>&6
-echo "configure:7027: checking for memmove" >&5
+echo "configure:7091: checking for memmove" >&5
 if eval "test \"`echo '$''{'ac_cv_func_memmove'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7032 "configure"
+#line 7096 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char memmove(); below.  */
@@ -7051,7 +7115,7 @@ memmove();
 
 ; return 0; }
 EOF
-if { (eval echo configure:7055: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7119: \"$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
@@ -7084,7 +7148,7 @@ fi
 #--------------------------------------------------------------------
 if test "x${ac_cv_func_strstr}" = "xyes"; then
     echo $ac_n "checking proper strstr implementation""... $ac_c" 1>&6
-echo "configure:7088: checking proper strstr implementation" >&5
+echo "configure:7152: checking proper strstr implementation" >&5
 if eval "test \"`echo '$''{'tcl_cv_strstr_unbroken'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7093,7 +7157,7 @@ else
   tcl_cv_strstr_unbroken=broken
 else
   cat > conftest.$ac_ext <<EOF
-#line 7097 "configure"
+#line 7161 "configure"
 #include "confdefs.h"
 
 	extern int strstr();
@@ -7102,7 +7166,7 @@ else
 	    exit(strstr("\0test", "test") ? 1 : 0);
 	}
 EOF
-if { (eval echo configure:7106: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:7170: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_cv_strstr_unbroken=ok
 else
@@ -7129,12 +7193,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for strtoul""... $ac_c" 1>&6
-echo "configure:7133: checking for strtoul" >&5
+echo "configure:7197: checking for strtoul" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strtoul'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7138 "configure"
+#line 7202 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strtoul(); below.  */
@@ -7157,7 +7221,7 @@ strtoul();
 
 ; return 0; }
 EOF
-if { (eval echo configure:7161: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7225: \"$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
@@ -7179,7 +7243,7 @@ fi
 
 if test $tcl_ok = 1; then
     echo $ac_n "checking proper strtoul implementation""... $ac_c" 1>&6
-echo "configure:7183: checking proper strtoul implementation" >&5
+echo "configure:7247: checking proper strtoul implementation" >&5
 if eval "test \"`echo '$''{'tcl_cv_strtoul_unbroken'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7188,7 +7252,7 @@ else
   tcl_cv_strtoul_unbroken=broken
 else
   cat > conftest.$ac_ext <<EOF
-#line 7192 "configure"
+#line 7256 "configure"
 #include "confdefs.h"
 
 	extern int strtoul();
@@ -7204,7 +7268,7 @@ else
 	    exit(0);
 	}
 EOF
-if { (eval echo configure:7208: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:7272: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_cv_strtoul_unbroken=ok 
 else
@@ -7233,12 +7297,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for strtod""... $ac_c" 1>&6
-echo "configure:7237: checking for strtod" >&5
+echo "configure:7301: checking for strtod" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strtod'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7242 "configure"
+#line 7306 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strtod(); below.  */
@@ -7261,7 +7325,7 @@ strtod();
 
 ; return 0; }
 EOF
-if { (eval echo configure:7265: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7329: \"$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
@@ -7283,7 +7347,7 @@ fi
 
 if test $tcl_ok = 1; then
     echo $ac_n "checking proper strtod implementation""... $ac_c" 1>&6
-echo "configure:7287: checking proper strtod implementation" >&5
+echo "configure:7351: checking proper strtod implementation" >&5
 if eval "test \"`echo '$''{'tcl_cv_strtod_unbroken'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7292,7 +7356,7 @@ else
   tcl_cv_strtod_unbroken=broken
 else
   cat > conftest.$ac_ext <<EOF
-#line 7296 "configure"
+#line 7360 "configure"
 #include "confdefs.h"
 
 	extern double strtod();
@@ -7308,7 +7372,7 @@ else
 	    exit(0);
 	}
 EOF
-if { (eval echo configure:7312: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:7376: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_cv_strtod_unbroken=ok 
 else
@@ -7340,12 +7404,12 @@ fi
 
 
     echo $ac_n "checking for strtod""... $ac_c" 1>&6
-echo "configure:7344: checking for strtod" >&5
+echo "configure:7408: checking for strtod" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strtod'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7349 "configure"
+#line 7413 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strtod(); below.  */
@@ -7368,7 +7432,7 @@ strtod();
 
 ; return 0; }
 EOF
-if { (eval echo configure:7372: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7436: \"$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
@@ -7390,7 +7454,7 @@ fi
 
     if test "$tcl_strtod" = 1; then
 	echo $ac_n "checking for Solaris2.4/Tru64 strtod bugs""... $ac_c" 1>&6
-echo "configure:7394: checking for Solaris2.4/Tru64 strtod bugs" >&5
+echo "configure:7458: checking for Solaris2.4/Tru64 strtod bugs" >&5
 if eval "test \"`echo '$''{'tcl_cv_strtod_buggy'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7399,7 +7463,7 @@ else
   tcl_cv_strtod_buggy=buggy
 else
   cat > conftest.$ac_ext <<EOF
-#line 7403 "configure"
+#line 7467 "configure"
 #include "confdefs.h"
 
 		extern double strtod();
@@ -7422,7 +7486,7 @@ else
 		    exit(0);
 		}
 EOF
-if { (eval echo configure:7426: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:7490: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_cv_strtod_buggy=ok
 else
@@ -7453,12 +7517,12 @@ EOF
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for ANSI C header files""... $ac_c" 1>&6
-echo "configure:7457: checking for ANSI C header files" >&5
+echo "configure:7521: checking for ANSI C header files" >&5
 if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7462 "configure"
+#line 7526 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <stdarg.h>
@@ -7466,7 +7530,7 @@ else
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:7470: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:7534: \"$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*
@@ -7483,7 +7547,7 @@ 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 7487 "configure"
+#line 7551 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -7501,7 +7565,7 @@ 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 7505 "configure"
+#line 7569 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -7522,7 +7586,7 @@ if test "$cross_compiling" = yes; then
   :
 else
   cat > conftest.$ac_ext <<EOF
-#line 7526 "configure"
+#line 7590 "configure"
 #include "confdefs.h"
 #include <ctype.h>
 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
@@ -7533,7 +7597,7 @@ if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
 exit (0); }
 
 EOF
-if { (eval echo configure:7537: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:7601: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -7557,12 +7621,12 @@ EOF
 fi
 
 echo $ac_n "checking for mode_t""... $ac_c" 1>&6
-echo "configure:7561: checking for mode_t" >&5
+echo "configure:7625: checking for mode_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_mode_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7566 "configure"
+#line 7630 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -7590,12 +7654,12 @@ EOF
 fi
 
 echo $ac_n "checking for pid_t""... $ac_c" 1>&6
-echo "configure:7594: checking for pid_t" >&5
+echo "configure:7658: checking for pid_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_pid_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7599 "configure"
+#line 7663 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -7623,12 +7687,12 @@ EOF
 fi
 
 echo $ac_n "checking for size_t""... $ac_c" 1>&6
-echo "configure:7627: checking for size_t" >&5
+echo "configure:7691: checking for size_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_size_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7632 "configure"
+#line 7696 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -7656,12 +7720,12 @@ EOF
 fi
 
 echo $ac_n "checking for uid_t in sys/types.h""... $ac_c" 1>&6
-echo "configure:7660: checking for uid_t in sys/types.h" >&5
+echo "configure:7724: checking for uid_t in sys/types.h" >&5
 if eval "test \"`echo '$''{'ac_cv_type_uid_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7665 "configure"
+#line 7729 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 EOF
@@ -7691,13 +7755,13 @@ fi
 
 
 echo $ac_n "checking for socklen_t""... $ac_c" 1>&6
-echo "configure:7695: checking for socklen_t" >&5
+echo "configure:7759: checking for socklen_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_socklen_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
     cat > conftest.$ac_ext <<EOF
-#line 7701 "configure"
+#line 7765 "configure"
 #include "confdefs.h"
 
     #include <sys/types.h>
@@ -7736,12 +7800,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for opendir""... $ac_c" 1>&6
-echo "configure:7740: checking for opendir" >&5
+echo "configure:7804: checking for opendir" >&5
 if eval "test \"`echo '$''{'ac_cv_func_opendir'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7745 "configure"
+#line 7809 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char opendir(); below.  */
@@ -7764,7 +7828,7 @@ opendir();
 
 ; return 0; }
 EOF
-if { (eval echo configure:7768: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7832: \"$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
@@ -7797,13 +7861,13 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking union wait""... $ac_c" 1>&6
-echo "configure:7801: checking union wait" >&5
+echo "configure:7865: checking union wait" >&5
 if eval "test \"`echo '$''{'tcl_cv_union_wait'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
     cat > conftest.$ac_ext <<EOF
-#line 7807 "configure"
+#line 7871 "configure"
 #include "confdefs.h"
 #include <sys/types.h> 
 #include <sys/wait.h>
@@ -7815,7 +7879,7 @@ WIFEXITED(x);		/* Generates compiler error if WIFEXITED
     
 ; return 0; }
 EOF
-if { (eval echo configure:7819: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7883: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_cv_union_wait=yes
 else
@@ -7842,12 +7906,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for strncasecmp""... $ac_c" 1>&6
-echo "configure:7846: checking for strncasecmp" >&5
+echo "configure:7910: checking for strncasecmp" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strncasecmp'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7851 "configure"
+#line 7915 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strncasecmp(); below.  */
@@ -7870,7 +7934,7 @@ strncasecmp();
 
 ; return 0; }
 EOF
-if { (eval echo configure:7874: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7938: \"$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
@@ -7892,7 +7956,7 @@ fi
 
 if test "$tcl_ok" = 0; then
     echo $ac_n "checking for strncasecmp in -lsocket""... $ac_c" 1>&6
-echo "configure:7896: checking for strncasecmp in -lsocket" >&5
+echo "configure:7960: checking for strncasecmp in -lsocket" >&5
 ac_lib_var=`echo socket'_'strncasecmp | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7900,7 +7964,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lsocket  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7904 "configure"
+#line 7968 "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
@@ -7911,7 +7975,7 @@ int main() {
 strncasecmp()
 ; return 0; }
 EOF
-if { (eval echo configure:7915: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7979: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -7935,7 +7999,7 @@ fi
 fi
 if test "$tcl_ok" = 0; then
     echo $ac_n "checking for strncasecmp in -linet""... $ac_c" 1>&6
-echo "configure:7939: checking for strncasecmp in -linet" >&5
+echo "configure:8003: checking for strncasecmp in -linet" >&5
 ac_lib_var=`echo inet'_'strncasecmp | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -7943,7 +8007,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-linet  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 7947 "configure"
+#line 8011 "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
@@ -7954,7 +8018,7 @@ int main() {
 strncasecmp()
 ; return 0; }
 EOF
-if { (eval echo configure:7958: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:8022: \"$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
@@ -7992,12 +8056,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for BSDgettimeofday""... $ac_c" 1>&6
-echo "configure:7996: checking for BSDgettimeofday" >&5
+echo "configure:8060: checking for BSDgettimeofday" >&5
 if eval "test \"`echo '$''{'ac_cv_func_BSDgettimeofday'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 8001 "configure"
+#line 8065 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char BSDgettimeofday(); below.  */
@@ -8020,7 +8084,7 @@ BSDgettimeofday();
 
 ; return 0; }
 EOF
-if { (eval echo configure:8024: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:8088: \"$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
@@ -8042,12 +8106,12 @@ else
   echo "$ac_t""no" 1>&6
 
     echo $ac_n "checking for gettimeofday""... $ac_c" 1>&6
-echo "configure:8046: checking for gettimeofday" >&5
+echo "configure:8110: checking for gettimeofday" >&5
 if eval "test \"`echo '$''{'ac_cv_func_gettimeofday'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 8051 "configure"
+#line 8115 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char gettimeofday(); below.  */
@@ -8070,7 +8134,7 @@ gettimeofday();
 
 ; return 0; }
 EOF
-if { (eval echo configure:8074: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:8138: \"$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
@@ -8097,13 +8161,13 @@ fi
 fi
 
 echo $ac_n "checking for gettimeofday declaration""... $ac_c" 1>&6
-echo "configure:8101: checking for gettimeofday declaration" >&5
+echo "configure:8165: checking for gettimeofday declaration" >&5
 if eval "test \"`echo '$''{'tcl_cv_grep_gettimeofday'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
     cat > conftest.$ac_ext <<EOF
-#line 8107 "configure"
+#line 8171 "configure"
 #include "confdefs.h"
 #include <sys/time.h>
 EOF
@@ -8134,14 +8198,14 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking whether char is unsigned""... $ac_c" 1>&6
-echo "configure:8138: checking whether char is unsigned" >&5
+echo "configure:8202: checking whether char is unsigned" >&5
 if eval "test \"`echo '$''{'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.$ac_ext <<EOF
-#line 8145 "configure"
+#line 8209 "configure"
 #include "confdefs.h"
 #ifdef __CHAR_UNSIGNED__
   yes
@@ -8163,7 +8227,7 @@ if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 8167 "configure"
+#line 8231 "configure"
 #include "confdefs.h"
 /* volatile prevents gcc2 from optimizing the test away on sparcs.  */
 #if !defined(__STDC__) || __STDC__ != 1
@@ -8173,7 +8237,7 @@ main() {
   volatile char c = 255; exit(c < 0);
 }
 EOF
-if { (eval echo configure:8177: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:8241: \"$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
@@ -8197,13 +8261,13 @@ EOF
 fi
 
 echo $ac_n "checking signed char declarations""... $ac_c" 1>&6
-echo "configure:8201: checking signed char declarations" >&5
+echo "configure:8265: checking signed char declarations" >&5
 if eval "test \"`echo '$''{'tcl_cv_char_signed'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
     cat > conftest.$ac_ext <<EOF
-#line 8207 "configure"
+#line 8271 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -8213,7 +8277,7 @@ int main() {
 	
 ; return 0; }
 EOF
-if { (eval echo configure:8217: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:8281: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_char_signed=yes
 else
@@ -8238,7 +8302,7 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for a putenv() that copies the buffer""... $ac_c" 1>&6
-echo "configure:8242: checking for a putenv() that copies the buffer" >&5
+echo "configure:8306: checking for a putenv() that copies the buffer" >&5
 if eval "test \"`echo '$''{'tcl_cv_putenv_copy'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -8247,7 +8311,7 @@ else
   tcl_cv_putenv_copy=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 8251 "configure"
+#line 8315 "configure"
 #include "confdefs.h"
 
 	#include <stdlib.h>
@@ -8269,7 +8333,7 @@ else
 	}
     
 EOF
-if { (eval echo configure:8273: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:8337: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_cv_putenv_copy=no
 else
@@ -8309,17 +8373,17 @@ fi
     if test "$langinfo_ok" = "yes"; then
 	ac_safe=`echo "langinfo.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for langinfo.h""... $ac_c" 1>&6
-echo "configure:8313: checking for langinfo.h" >&5
+echo "configure:8377: checking for langinfo.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 8318 "configure"
+#line 8382 "configure"
 #include "confdefs.h"
 #include <langinfo.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:8323: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:8387: \"$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*
@@ -8343,21 +8407,21 @@ fi
 
     fi
     echo $ac_n "checking whether to use nl_langinfo""... $ac_c" 1>&6
-echo "configure:8347: checking whether to use nl_langinfo" >&5
+echo "configure:8411: checking whether to use nl_langinfo" >&5
     if test "$langinfo_ok" = "yes"; then
 	if eval "test \"`echo '$''{'tcl_cv_langinfo_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	    cat > conftest.$ac_ext <<EOF
-#line 8354 "configure"
+#line 8418 "configure"
 #include "confdefs.h"
 #include <langinfo.h>
 int main() {
 nl_langinfo(CODESET);
 ; return 0; }
 EOF
-if { (eval echo configure:8361: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:8425: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_langinfo_h=yes
 else
@@ -8390,17 +8454,17 @@ if test "`uname -s`" = "Darwin" ; then
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:8394: checking for $ac_hdr" >&5
+echo "configure:8458: 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 8399 "configure"
+#line 8463 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:8404: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:8468: \"$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*
@@ -8429,12 +8493,12 @@ done
     for ac_func in copyfile
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:8433: checking for $ac_func" >&5
+echo "configure:8497: 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 8438 "configure"
+#line 8502 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -8457,7 +8521,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:8461: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:8525: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -8486,17 +8550,17 @@ done
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:8490: checking for $ac_hdr" >&5
+echo "configure:8554: 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 8495 "configure"
+#line 8559 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:8500: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:8564: \"$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*
@@ -8525,12 +8589,12 @@ done
 	for ac_func in OSSpinLockLock
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:8529: checking for $ac_func" >&5
+echo "configure:8593: 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 8534 "configure"
+#line 8598 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -8553,7 +8617,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:8557: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:8621: \"$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
@@ -8580,12 +8644,12 @@ done
 	for ac_func in pthread_atfork
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:8584: checking for $ac_func" >&5
+echo "configure:8648: 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 8589 "configure"
+#line 8653 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -8608,7 +8672,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:8612: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:8676: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -8649,17 +8713,17 @@ EOF
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:8653: checking for $ac_hdr" >&5
+echo "configure:8717: 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 8658 "configure"
+#line 8722 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:8663: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:8727: \"$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*
@@ -8687,14 +8751,14 @@ done
 
     if test "$ac_cv_header_AvailabilityMacros_h" = yes; then
 	echo $ac_n "checking if weak import is available""... $ac_c" 1>&6
-echo "configure:8691: checking if weak import is available" >&5
+echo "configure:8755: checking if weak import is available" >&5
 if eval "test \"`echo '$''{'tcl_cv_cc_weak_import'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	    hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -Werror"
 	    cat > conftest.$ac_ext <<EOF
-#line 8698 "configure"
+#line 8762 "configure"
 #include "confdefs.h"
 
 		    #ifdef __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
@@ -8710,7 +8774,7 @@ int main() {
 rand();
 ; return 0; }
 EOF
-if { (eval echo configure:8714: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:8778: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_cv_cc_weak_import=yes
 else
@@ -8738,13 +8802,13 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for fts""... $ac_c" 1>&6
-echo "configure:8742: checking for fts" >&5
+echo "configure:8806: checking for fts" >&5
 if eval "test \"`echo '$''{'tcl_cv_api_fts'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
     cat > conftest.$ac_ext <<EOF
-#line 8748 "configure"
+#line 8812 "configure"
 #include "confdefs.h"
 
 	    #include <sys/param.h>
@@ -8759,7 +8823,7 @@ int main() {
 	
 ; return 0; }
 EOF
-if { (eval echo configure:8763: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:8827: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_cv_api_fts=yes
 else
@@ -8791,17 +8855,17 @@ fi
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:8795: checking for $ac_hdr" >&5
+echo "configure:8859: 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 8800 "configure"
+#line 8864 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:8805: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:8869: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -8831,17 +8895,17 @@ done
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:8835: checking for $ac_hdr" >&5
+echo "configure:8899: 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 8840 "configure"
+#line 8904 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:8845: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:8909: \"$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*
@@ -8869,7 +8933,7 @@ done
 
     
     echo $ac_n "checking system version""... $ac_c" 1>&6
-echo "configure:8873: checking system version" >&5
+echo "configure:8937: checking system version" >&5
 if eval "test \"`echo '$''{'tcl_cv_sys_version'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -8900,7 +8964,7 @@ echo "$ac_t""$tcl_cv_sys_version" 1>&6
     system=$tcl_cv_sys_version
 
     echo $ac_n "checking FIONBIO vs. O_NONBLOCK for nonblocking I/O""... $ac_c" 1>&6
-echo "configure:8904: checking FIONBIO vs. O_NONBLOCK for nonblocking I/O" >&5
+echo "configure:8968: checking FIONBIO vs. O_NONBLOCK for nonblocking I/O" >&5
     case $system in
 	# There used to be code here to use FIONBIO under AIX.  However, it
 	# was reported that FIONBIO doesn't work under AIX 3.2.5.  Since
@@ -8963,7 +9027,7 @@ if test "`uname -s`" = "Darwin" ; then
     
     if test "`uname -s`" = "Darwin" ; then
 	echo $ac_n "checking how to package libraries""... $ac_c" 1>&6
-echo "configure:8967: checking how to package libraries" >&5
+echo "configure:9031: checking how to package libraries" >&5
 	# Check whether --enable-framework or --disable-framework was given.
 if test "${enable_framework+set}" = set; then
   enableval="$enable_framework"
diff --git a/unix/tcl.m4 b/unix/tcl.m4
index f3d9f1b..13f533a 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -1560,15 +1560,33 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    CFLAGS_OPTIMIZE="-Os"
 	    SHLIB_CFLAGS="-fno-common"
 	    if test $do64bit = yes; then
-		do64bit_ok=yes
 		case `arch` in
 		    ppc)
-			CFLAGS="$CFLAGS -arch ppc64 -mpowerpc64 -mcpu=G5";;
+			AC_CACHE_CHECK([if compiler accepts -arch ppc64 flag],
+				tcl_cv_cc_arch_ppc64, [
+			    hold_cflags=$CFLAGS
+			    CFLAGS="$CFLAGS -arch ppc64 -mpowerpc64 -mcpu=G5"
+			    AC_TRY_LINK(,, tcl_cv_cc_arch_ppc64=yes,
+				    tcl_cv_cc_arch_ppc64=no)
+			    CFLAGS=$hold_cflags])
+			if test $tcl_cv_cc_arch_ppc64 = yes; then
+			    CFLAGS="$CFLAGS -arch ppc64 -mpowerpc64 -mcpu=G5"
+			    do64bit_ok=yes
+			fi;;
 		    i386)
-			CFLAGS="$CFLAGS -arch x86_64";;
+			AC_CACHE_CHECK([if compiler accepts -arch x86_64 flag],
+				tcl_cv_cc_arch_x86_64, [
+			    hold_cflags=$CFLAGS
+			    CFLAGS="$CFLAGS -arch x86_64"
+			    AC_TRY_LINK(,, tcl_cv_cc_arch_x86_64=yes,
+				    tcl_cv_cc_arch_x86_64=no)
+			    CFLAGS=$hold_cflags])
+			if test $tcl_cv_cc_arch_x86_64 = yes; then
+			    CFLAGS="$CFLAGS -arch x86_64"
+			    do64bit_ok=yes
+			fi;;
 		    *)
-			AC_MSG_WARN([Don't know how enable 64-bit on architecture `arch`])
-			do64bit_ok=no;;
+			AC_MSG_WARN([Don't know how enable 64-bit on architecture `arch`]);;
 		esac
 	    else
 		# Check for combined 32-bit and 64-bit fat build
-- 
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