* unix/tcl.m4 (Darwin): add support for --enable-64bit on x86_64, for

	universal builds including x86_64, for 64-bit CoreFoundation on Leopard
	and for use of -mmacosx-version-min instead of MACOSX_DEPLOYMENT_TARGET.
	* unix/configure: autoconf-2.13

	* generic/tcl.h:      add fixes for building on Leopard and support for
	* unix/tclUnixPort.h: 64-bit CoreFoundation on Leopard.

	* unix/tclUnixPort.h: on Darwin x86_64, disable use of vfork as it
	causes execve to fail intermittently. (rdar://4685553)

	* macosx/README: updates for x86_64 support and Xcode 2.3.

1 files changed, 313 insertions, 262 deletions

diff --git a/unix/configure b/unix/configure
index ef629ee..e2b2850 100755
--- a/unix/configure
+++ b/unix/configure
@@ -3413,11 +3413,24 @@ echo "$ac_t""$tcl_cv_ld_elf" 1>&6
 	    SHLIB_CFLAGS="-fno-common"
 	    if test $do64bit = yes; then
 		do64bit_ok=yes
-		CFLAGS="$CFLAGS -arch ppc64 -mpowerpc64 -mcpu=G5"
+		case `arch` in
+		    ppc)
+			CFLAGS="$CFLAGS -arch ppc64 -mpowerpc64 -mcpu=G5";;
+		    i386)
+			CFLAGS="$CFLAGS -arch x86_64";;
+		    *)
+			echo "configure: warning: Don't know how enable 64-bit on architecture `arch`" 1>&2
+			do64bit_ok=no;;
+		esac
+	    else
+		# Check for combined 32-bit and 64-bit fat build
+		echo "$CFLAGS " | grep -E -q -- '-arch (ppc64|x86_64) ' && \
+		    echo "$CFLAGS " | grep -E -q -- '-arch (ppc|i386) ' && \
+		    fat_32_64=yes
 	    fi
 	    SHLIB_LD='${CC} -dynamiclib ${CFLAGS} ${LDFLAGS}'
 	    echo $ac_n "checking if ld accepts -single_module flag""... $ac_c" 1>&6
-echo "configure:3421: checking if ld accepts -single_module flag" >&5
+echo "configure:3434: checking if ld accepts -single_module flag" >&5
 if eval "test \"`echo '$''{'tcl_cv_ld_single_module'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3425,14 +3438,14 @@ else
 		hold_ldflags=$LDFLAGS
 		LDFLAGS="$LDFLAGS -dynamiclib -Wl,-single_module"
 		cat > conftest.$ac_ext <<EOF
-#line 3429 "configure"
+#line 3442 "configure"
 #include "confdefs.h"
 
 int main() {
 int i;
 ; return 0; }
 EOF
-if { (eval echo configure:3436: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3449: \"$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
@@ -3454,12 +3467,12 @@ echo "$ac_t""$tcl_cv_ld_single_module" 1>&6
 	    DL_OBJS="tclLoadDyld.o"
 	    DL_LIBS=""
 	    # Don't use -prebind when building for Mac OS X 10.4 or later only:
-	    test -z "${MACOSX_DEPLOYMENT_TARGET}" || \
-		test "`echo "${MACOSX_DEPLOYMENT_TARGET}" | awk -F. '{print $2}'`" -lt 4 && \
+	    test "`echo "${MACOSX_DEPLOYMENT_TARGET}" | awk -F '10\\.' '{print int($2)}'`" -lt 4 -a \
+		"`echo "${CFLAGS}" | awk -F '-mmacosx-version-min=10\\.' '{print int($2)}'`" -lt 4 && \
 		LDFLAGS="$LDFLAGS -prebind"
 	    LDFLAGS="$LDFLAGS -headerpad_max_install_names"
 	    echo $ac_n "checking if ld accepts -search_paths_first flag""... $ac_c" 1>&6
-echo "configure:3463: checking if ld accepts -search_paths_first flag" >&5
+echo "configure:3476: checking if ld accepts -search_paths_first flag" >&5
 if eval "test \"`echo '$''{'tcl_cv_ld_search_paths_first'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3467,14 +3480,14 @@ else
 		hold_ldflags=$LDFLAGS
 		LDFLAGS="$LDFLAGS -Wl,-search_paths_first"
 		cat > conftest.$ac_ext <<EOF
-#line 3471 "configure"
+#line 3484 "configure"
 #include "confdefs.h"
 
 int main() {
 int i;
 ; return 0; }
 EOF
-if { (eval echo configure:3478: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3491: \"$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
@@ -3497,7 +3510,7 @@ 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""... $ac_c" 1>&6
-echo "configure:3501: checking whether to use CoreFoundation" >&5
+echo "configure:3514: checking whether to use CoreFoundation" >&5
 	    # Check whether --enable-corefoundation or --disable-corefoundation was given.
 if test "${enable_corefoundation+set}" = set; then
   enableval="$enable_corefoundation"
@@ -3509,28 +3522,28 @@ fi
 	    echo "$ac_t""$tcl_corefoundation" 1>&6
 	    if test $tcl_corefoundation = yes; then
 		echo $ac_n "checking for CoreFoundation.framework""... $ac_c" 1>&6
-echo "configure:3513: checking for CoreFoundation.framework" >&5
+echo "configure:3526: checking for CoreFoundation.framework" >&5
 if eval "test \"`echo '$''{'tcl_cv_lib_corefoundation'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 		    hold_libs=$LIBS; hold_cflags=$CFLAGS
-		    if test $do64bit_ok = no ; then
-			# remove -arch ppc64 from CFLAGS while testing presence
-			# of CF, otherwise all archs will have CF disabled.
-			# CF for ppc64 is disabled in tclUnixPort.h instead.
-			CFLAGS="`echo "$CFLAGS" | sed -e 's/-arch ppc64/-arch ppc/'`"
+		    if test "$fat_32_64" = yes; then
+			# On Tiger there is no 64-bit CF, so remove 64-bit archs
+			# from CFLAGS while testing for presence of CF.
+			# 64-bit CF is disabled in tclUnixPort.h if necessary.
+			CFLAGS="`echo "$CFLAGS " | sed -e 's/-arch ppc64 / /g' -e 's/-arch x86_64 / /g'`"
 		    fi
 		    LIBS="$LIBS -framework CoreFoundation"
 		    cat > conftest.$ac_ext <<EOF
-#line 3527 "configure"
+#line 3540 "configure"
 #include "confdefs.h"
 #include <CoreFoundation/CoreFoundation.h>
 int main() {
 CFBundleRef b = CFBundleGetMainBundle();
 ; return 0; }
 EOF
-if { (eval echo configure:3534: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3547: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_cv_lib_corefoundation=yes
 else
@@ -3553,6 +3566,44 @@ EOF
 		else
 		    tcl_corefoundation=no
 		fi
+		if test "$fat_32_64" = yes -a $tcl_corefoundation = yes; then
+		    echo $ac_n "checking for 64-bit CoreFoundation""... $ac_c" 1>&6
+echo "configure:3572: checking for 64-bit CoreFoundation" >&5
+if eval "test \"`echo '$''{'tcl_cv_lib_corefoundation_64'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  
+			hold_cflags=$CFLAGS
+			CFLAGS="`echo "$CFLAGS " | sed -e 's/-arch ppc / /g' -e 's/-arch i386 / /g'`"
+			cat > conftest.$ac_ext <<EOF
+#line 3580 "configure"
+#include "confdefs.h"
+#include <CoreFoundation/CoreFoundation.h>
+int main() {
+CFBundleRef b = CFBundleGetMainBundle();
+; return 0; }
+EOF
+if { (eval echo configure:3587: \"$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
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  tcl_cv_lib_corefoundation_64=no
+fi
+rm -f conftest*
+			CFLAGS=$hold_cflags
+fi
+
+echo "$ac_t""$tcl_cv_lib_corefoundation_64" 1>&6
+		    if test $tcl_cv_lib_corefoundation_64 = no; then
+			cat >> confdefs.h <<\EOF
+#define NO_COREFOUNDATION_64 1
+EOF
+
+		    fi
+		fi
 	    fi
 	    cat >> confdefs.h <<\EOF
 #define MAC_OSX_TCL 1
@@ -3845,7 +3896,7 @@ 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""... $ac_c" 1>&6
-echo "configure:3849: checking for ld accepts -Bexport flag" >&5
+echo "configure:3900: checking for ld accepts -Bexport flag" >&5
 if eval "test \"`echo '$''{'tcl_cv_ld_Bexport'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3853,14 +3904,14 @@ else
 		hold_ldflags=$LDFLAGS
 		LDFLAGS="$LDFLAGS -Wl,-Bexport"
 		cat > conftest.$ac_ext <<EOF
-#line 3857 "configure"
+#line 3908 "configure"
 #include "confdefs.h"
 
 int main() {
 int i;
 ; return 0; }
 EOF
-if { (eval echo configure:3864: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3915: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_cv_ld_Bexport=yes
 else
@@ -3907,13 +3958,13 @@ echo "$ac_t""$tcl_cv_ld_Bexport" 1>&6
 
     if test "x$DL_OBJS" = "xtclLoadAout.o" ; then
 	echo $ac_n "checking sys/exec.h""... $ac_c" 1>&6
-echo "configure:3911: checking sys/exec.h" >&5
+echo "configure:3962: checking sys/exec.h" >&5
 if eval "test \"`echo '$''{'tcl_cv_sysexec_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	cat > conftest.$ac_ext <<EOF
-#line 3917 "configure"
+#line 3968 "configure"
 #include "confdefs.h"
 #include <sys/exec.h>
 int main() {
@@ -3931,7 +3982,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:3935: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3986: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_sysexec_h=usable
 else
@@ -3951,13 +4002,13 @@ EOF
 
 	else
 	    echo $ac_n "checking a.out.h""... $ac_c" 1>&6
-echo "configure:3955: checking a.out.h" >&5
+echo "configure:4006: checking a.out.h" >&5
 if eval "test \"`echo '$''{'tcl_cv_aout_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	    cat > conftest.$ac_ext <<EOF
-#line 3961 "configure"
+#line 4012 "configure"
 #include "confdefs.h"
 #include <a.out.h>
 int main() {
@@ -3975,7 +4026,7 @@ int main() {
 	    
 ; return 0; }
 EOF
-if { (eval echo configure:3979: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4030: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_aout_h=usable
 else
@@ -3995,13 +4046,13 @@ EOF
 
 	    else
 		echo $ac_n "checking sys/exec_aout.h""... $ac_c" 1>&6
-echo "configure:3999: checking sys/exec_aout.h" >&5
+echo "configure:4050: checking sys/exec_aout.h" >&5
 if eval "test \"`echo '$''{'tcl_cv_sysexecaout_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 		cat > conftest.$ac_ext <<EOF
-#line 4005 "configure"
+#line 4056 "configure"
 #include "confdefs.h"
 #include <sys/exec_aout.h>
 int main() {
@@ -4019,7 +4070,7 @@ int main() {
 		
 ; return 0; }
 EOF
-if { (eval echo configure:4023: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4074: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_sysexecaout_h=usable
 else
@@ -4172,7 +4223,7 @@ fi
 
 
     echo $ac_n "checking for build with symbols""... $ac_c" 1>&6
-echo "configure:4176: checking for build with symbols" >&5
+echo "configure:4227: checking for build with symbols" >&5
     # Check whether --enable-symbols or --disable-symbols was given.
 if test "${enable_symbols+set}" = set; then
   enableval="$enable_symbols"
@@ -4233,21 +4284,21 @@ TCL_DBGX=${DBGX}
 
 
     echo $ac_n "checking for required early compiler flags""... $ac_c" 1>&6
-echo "configure:4237: checking for required early compiler flags" >&5
+echo "configure:4288: 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 4244 "configure"
+#line 4295 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 int main() {
 char *p = (char *)strtoll; char *q = (char *)strtoull;
 ; return 0; }
 EOF
-if { (eval echo configure:4251: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4302: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__isoc99_source=no
 else
@@ -4255,7 +4306,7 @@ else
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   cat > conftest.$ac_ext <<EOF
-#line 4259 "configure"
+#line 4310 "configure"
 #include "confdefs.h"
 #define _ISOC99_SOURCE 1
 #include <stdlib.h>
@@ -4263,7 +4314,7 @@ int main() {
 char *p = (char *)strtoll; char *q = (char *)strtoull;
 ; return 0; }
 EOF
-if { (eval echo configure:4267: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4318: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__isoc99_source=yes
 else
@@ -4290,14 +4341,14 @@ EOF
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4294 "configure"
+#line 4345 "configure"
 #include "confdefs.h"
 #include <sys/stat.h>
 int main() {
 struct stat64 buf; int i = stat64("/", &buf);
 ; return 0; }
 EOF
-if { (eval echo configure:4301: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4352: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__largefile64_source=no
 else
@@ -4305,7 +4356,7 @@ else
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   cat > conftest.$ac_ext <<EOF
-#line 4309 "configure"
+#line 4360 "configure"
 #include "confdefs.h"
 #define _LARGEFILE64_SOURCE 1
 #include <sys/stat.h>
@@ -4313,7 +4364,7 @@ int main() {
 struct stat64 buf; int i = stat64("/", &buf);
 ; return 0; }
 EOF
-if { (eval echo configure:4317: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4368: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__largefile64_source=yes
 else
@@ -4340,14 +4391,14 @@ EOF
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4344 "configure"
+#line 4395 "configure"
 #include "confdefs.h"
 #include <sys/stat.h>
 int main() {
 char *p = (char *)open64;
 ; return 0; }
 EOF
-if { (eval echo configure:4351: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4402: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__largefile_source64=no
 else
@@ -4355,7 +4406,7 @@ else
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   cat > conftest.$ac_ext <<EOF
-#line 4359 "configure"
+#line 4410 "configure"
 #include "confdefs.h"
 #define _LARGEFILE_SOURCE64 1
 #include <sys/stat.h>
@@ -4363,7 +4414,7 @@ int main() {
 char *p = (char *)open64;
 ; return 0; }
 EOF
-if { (eval echo configure:4367: \"$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__largefile_source64=yes
 else
@@ -4394,7 +4445,7 @@ EOF
 
 
     echo $ac_n "checking for 64-bit integer type""... $ac_c" 1>&6
-echo "configure:4398: checking for 64-bit integer type" >&5
+echo "configure:4449: checking for 64-bit integer type" >&5
     if eval "test \"`echo '$''{'tcl_cv_type_64bit'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -4402,14 +4453,14 @@ else
 	tcl_cv_type_64bit=none
 	# See if the compiler knows natively about __int64
 	cat > conftest.$ac_ext <<EOF
-#line 4406 "configure"
+#line 4457 "configure"
 #include "confdefs.h"
 
 int main() {
 __int64 value = (__int64) 0;
 ; return 0; }
 EOF
-if { (eval echo configure:4413: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4464: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_type_64bit=__int64
 else
@@ -4423,7 +4474,7 @@ rm -f conftest*
 	# type that is our current guess for a 64-bit type inside this check
 	# program, so it should be modified only carefully...
         cat > conftest.$ac_ext <<EOF
-#line 4427 "configure"
+#line 4478 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -4432,7 +4483,7 @@ switch (0) {
         }
 ; return 0; }
 EOF
-if { (eval echo configure:4436: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4487: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_type_64bit=${tcl_type_64bit}
 else
@@ -4457,13 +4508,13 @@ EOF
 
 	# Now check for auxiliary declarations
 	echo $ac_n "checking for struct dirent64""... $ac_c" 1>&6
-echo "configure:4461: checking for struct dirent64" >&5
+echo "configure:4512: checking for struct dirent64" >&5
 if eval "test \"`echo '$''{'tcl_cv_struct_dirent64'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	    cat > conftest.$ac_ext <<EOF
-#line 4467 "configure"
+#line 4518 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/dirent.h>
@@ -4471,7 +4522,7 @@ int main() {
 struct dirent64 p;
 ; return 0; }
 EOF
-if { (eval echo configure:4475: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4526: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_struct_dirent64=yes
 else
@@ -4492,13 +4543,13 @@ EOF
 	fi
 
 	echo $ac_n "checking for struct stat64""... $ac_c" 1>&6
-echo "configure:4496: checking for struct stat64" >&5
+echo "configure:4547: checking for struct stat64" >&5
 if eval "test \"`echo '$''{'tcl_cv_struct_stat64'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	    cat > conftest.$ac_ext <<EOF
-#line 4502 "configure"
+#line 4553 "configure"
 #include "confdefs.h"
 #include <sys/stat.h>
 int main() {
@@ -4506,7 +4557,7 @@ struct stat64 p;
 
 ; return 0; }
 EOF
-if { (eval echo configure:4510: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4561: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_struct_stat64=yes
 else
@@ -4529,12 +4580,12 @@ EOF
 	for ac_func in open64 lseek64
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:4533: checking for $ac_func" >&5
+echo "configure:4584: 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 4538 "configure"
+#line 4589 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -4557,7 +4608,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4561: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4612: \"$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
@@ -4582,13 +4633,13 @@ fi
 done
 
 	echo $ac_n "checking for off64_t""... $ac_c" 1>&6
-echo "configure:4586: checking for off64_t" >&5
+echo "configure:4637: checking for off64_t" >&5
 	if eval "test \"`echo '$''{'tcl_cv_type_off64_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	    cat > conftest.$ac_ext <<EOF
-#line 4592 "configure"
+#line 4643 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 int main() {
@@ -4596,7 +4647,7 @@ off64_t offset;
 
 ; return 0; }
 EOF
-if { (eval echo configure:4600: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4651: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_type_off64_t=yes
 else
@@ -4628,14 +4679,14 @@ EOF
 #--------------------------------------------------------------------
 
 echo $ac_n "checking whether byte ordering is bigendian""... $ac_c" 1>&6
-echo "configure:4632: checking whether byte ordering is bigendian" >&5
+echo "configure:4683: checking whether byte ordering is bigendian" >&5
 if eval "test \"`echo '$''{'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 4639 "configure"
+#line 4690 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/param.h>
@@ -4646,11 +4697,11 @@ int main() {
 #endif
 ; return 0; }
 EOF
-if { (eval echo configure:4650: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4701: \"$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 4654 "configure"
+#line 4705 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/param.h>
@@ -4661,7 +4712,7 @@ int main() {
 #endif
 ; return 0; }
 EOF
-if { (eval echo configure:4665: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4716: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_bigendian=yes
 else
@@ -4681,7 +4732,7 @@ if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 4685 "configure"
+#line 4736 "configure"
 #include "confdefs.h"
 main () {
   /* Are we little or big endian?  From Harbison&Steele.  */
@@ -4694,7 +4745,7 @@ main () {
   exit (u.c[sizeof (long) - 1] == 1);
 }
 EOF
-if { (eval echo configure:4698: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:4749: \"$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
@@ -4727,12 +4778,12 @@ fi
 for ac_func in getcwd
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:4731: checking for $ac_func" >&5
+echo "configure:4782: 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 4736 "configure"
+#line 4787 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -4755,7 +4806,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4759: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4810: \"$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
@@ -4789,12 +4840,12 @@ 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:4793: checking for $ac_func" >&5
+echo "configure:4844: 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 4798 "configure"
+#line 4849 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -4817,7 +4868,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4821: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4872: \"$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
@@ -4844,12 +4895,12 @@ done
 
 
 echo $ac_n "checking for strerror""... $ac_c" 1>&6
-echo "configure:4848: checking for strerror" >&5
+echo "configure:4899: checking for strerror" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strerror'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4853 "configure"
+#line 4904 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strerror(); below.  */
@@ -4872,7 +4923,7 @@ strerror();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4876: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4927: \"$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
@@ -4896,12 +4947,12 @@ EOF
 fi
 
 echo $ac_n "checking for getwd""... $ac_c" 1>&6
-echo "configure:4900: checking for getwd" >&5
+echo "configure:4951: checking for getwd" >&5
 if eval "test \"`echo '$''{'ac_cv_func_getwd'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4905 "configure"
+#line 4956 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char getwd(); below.  */
@@ -4924,7 +4975,7 @@ getwd();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4928: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4979: \"$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
@@ -4948,12 +4999,12 @@ EOF
 fi
 
 echo $ac_n "checking for wait3""... $ac_c" 1>&6
-echo "configure:4952: checking for wait3" >&5
+echo "configure:5003: checking for wait3" >&5
 if eval "test \"`echo '$''{'ac_cv_func_wait3'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4957 "configure"
+#line 5008 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char wait3(); below.  */
@@ -4976,7 +5027,7 @@ wait3();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4980: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5031: \"$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
@@ -5000,12 +5051,12 @@ EOF
 fi
 
 echo $ac_n "checking for uname""... $ac_c" 1>&6
-echo "configure:5004: checking for uname" >&5
+echo "configure:5055: checking for uname" >&5
 if eval "test \"`echo '$''{'ac_cv_func_uname'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5009 "configure"
+#line 5060 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char uname(); below.  */
@@ -5028,7 +5079,7 @@ uname();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5032: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5083: \"$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
@@ -5059,12 +5110,12 @@ if test "`uname -s`" = "Darwin" && test "${TCL_THREADS}" = 1 && \
     ac_cv_func_realpath=no
 fi
 echo $ac_n "checking for realpath""... $ac_c" 1>&6
-echo "configure:5063: checking for realpath" >&5
+echo "configure:5114: checking for realpath" >&5
 if eval "test \"`echo '$''{'ac_cv_func_realpath'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5068 "configure"
+#line 5119 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char realpath(); below.  */
@@ -5087,7 +5138,7 @@ realpath();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5091: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5142: \"$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
@@ -5122,17 +5173,17 @@ fi
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:5126: checking for $ac_hdr" >&5
+echo "configure:5177: 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 5131 "configure"
+#line 5182 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:5136: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5187: \"$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*
@@ -5159,7 +5210,7 @@ fi
 done
 
     echo $ac_n "checking termios vs. termio vs. sgtty""... $ac_c" 1>&6
-echo "configure:5163: checking termios vs. termio vs. sgtty" >&5
+echo "configure:5214: checking termios vs. termio vs. sgtty" >&5
 if eval "test \"`echo '$''{'tcl_cv_api_serial'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -5168,7 +5219,7 @@ else
   tcl_cv_api_serial=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 5172 "configure"
+#line 5223 "configure"
 #include "confdefs.h"
 
 #include <termios.h>
@@ -5183,7 +5234,7 @@ int main() {
     return 1;
 }
 EOF
-if { (eval echo configure:5187: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:5238: \"$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
@@ -5200,7 +5251,7 @@ fi
   tcl_cv_api_serial=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 5204 "configure"
+#line 5255 "configure"
 #include "confdefs.h"
 
 #include <termio.h>
@@ -5214,7 +5265,7 @@ int main() {
     return 1;
 }
 EOF
-if { (eval echo configure:5218: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:5269: \"$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
@@ -5232,7 +5283,7 @@ fi
   tcl_cv_api_serial=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 5236 "configure"
+#line 5287 "configure"
 #include "confdefs.h"
 
 #include <sgtty.h>
@@ -5247,7 +5298,7 @@ int main() {
     return 1;
 }
 EOF
-if { (eval echo configure:5251: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:5302: \"$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
@@ -5265,7 +5316,7 @@ fi
   tcl_cv_api_serial=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 5269 "configure"
+#line 5320 "configure"
 #include "confdefs.h"
 
 #include <termios.h>
@@ -5282,7 +5333,7 @@ int main() {
     return 1;
 }
 EOF
-if { (eval echo configure:5286: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:5337: \"$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
@@ -5300,7 +5351,7 @@ fi
   tcl_cv_api_serial=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 5304 "configure"
+#line 5355 "configure"
 #include "confdefs.h"
 
 #include <termio.h>
@@ -5316,7 +5367,7 @@ int main() {
     return 1;
     }
 EOF
-if { (eval echo configure:5320: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:5371: \"$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
@@ -5334,7 +5385,7 @@ fi
   tcl_cv_api_serial=none
 else
   cat > conftest.$ac_ext <<EOF
-#line 5338 "configure"
+#line 5389 "configure"
 #include "confdefs.h"
 
 #include <sgtty.h>
@@ -5351,7 +5402,7 @@ int main() {
     return 1;
 }
 EOF
-if { (eval echo configure:5355: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:5406: \"$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
@@ -5394,20 +5445,20 @@ EOF
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for fd_set in sys/types""... $ac_c" 1>&6
-echo "configure:5398: checking for fd_set in sys/types" >&5
+echo "configure:5449: checking for fd_set in sys/types" >&5
 if eval "test \"`echo '$''{'tcl_cv_type_fd_set'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
     cat > conftest.$ac_ext <<EOF
-#line 5404 "configure"
+#line 5455 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 int main() {
 fd_set readMask, writeMask;
 ; return 0; }
 EOF
-if { (eval echo configure:5411: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5462: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_type_fd_set=yes
 else
@@ -5423,13 +5474,13 @@ echo "$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""... $ac_c" 1>&6
-echo "configure:5427: checking for fd_mask in sys/select" >&5
+echo "configure:5478: checking for fd_mask in sys/select" >&5
 if eval "test \"`echo '$''{'tcl_cv_grep_fd_mask'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	cat > conftest.$ac_ext <<EOF
-#line 5433 "configure"
+#line 5484 "configure"
 #include "confdefs.h"
 #include <sys/select.h>
 EOF
@@ -5466,12 +5517,12 @@ fi
 #------------------------------------------------------------------------------
 
 echo $ac_n "checking whether struct tm is in sys/time.h or time.h""... $ac_c" 1>&6
-echo "configure:5470: checking whether struct tm is in sys/time.h or time.h" >&5
+echo "configure:5521: checking whether struct tm is in sys/time.h or time.h" >&5
 if eval "test \"`echo '$''{'ac_cv_struct_tm'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5475 "configure"
+#line 5526 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <time.h>
@@ -5479,7 +5530,7 @@ int main() {
 struct tm *tp; tp->tm_sec;
 ; return 0; }
 EOF
-if { (eval echo configure:5483: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5534: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_struct_tm=time.h
 else
@@ -5504,17 +5555,17 @@ fi
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:5508: checking for $ac_hdr" >&5
+echo "configure:5559: 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 5513 "configure"
+#line 5564 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:5518: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5569: \"$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*
@@ -5541,12 +5592,12 @@ fi
 done
 
     echo $ac_n "checking whether time.h and sys/time.h may both be included""... $ac_c" 1>&6
-echo "configure:5545: checking whether time.h and sys/time.h may both be included" >&5
+echo "configure:5596: checking whether time.h and sys/time.h may both be included" >&5
 if eval "test \"`echo '$''{'ac_cv_header_time'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5550 "configure"
+#line 5601 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/time.h>
@@ -5555,7 +5606,7 @@ int main() {
 struct tm *tp;
 ; return 0; }
 EOF
-if { (eval echo configure:5559: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5610: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_header_time=yes
 else
@@ -5576,12 +5627,12 @@ EOF
 fi
 
     echo $ac_n "checking for tm_zone in struct tm""... $ac_c" 1>&6
-echo "configure:5580: checking for tm_zone in struct tm" >&5
+echo "configure:5631: checking for tm_zone in struct tm" >&5
 if eval "test \"`echo '$''{'ac_cv_struct_tm_zone'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5585 "configure"
+#line 5636 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <$ac_cv_struct_tm>
@@ -5589,7 +5640,7 @@ int main() {
 struct tm tm; tm.tm_zone;
 ; return 0; }
 EOF
-if { (eval echo configure:5593: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5644: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_struct_tm_zone=yes
 else
@@ -5609,12 +5660,12 @@ EOF
 
 else
   echo $ac_n "checking for tzname""... $ac_c" 1>&6
-echo "configure:5613: checking for tzname" >&5
+echo "configure:5664: checking for tzname" >&5
 if eval "test \"`echo '$''{'ac_cv_var_tzname'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5618 "configure"
+#line 5669 "configure"
 #include "confdefs.h"
 #include <time.h>
 #ifndef tzname /* For SGI.  */
@@ -5624,7 +5675,7 @@ int main() {
 atoi(*tzname);
 ; return 0; }
 EOF
-if { (eval echo configure:5628: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5679: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   ac_cv_var_tzname=yes
 else
@@ -5649,12 +5700,12 @@ fi
     for ac_func in gmtime_r localtime_r
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:5653: checking for $ac_func" >&5
+echo "configure:5704: 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 5658 "configure"
+#line 5709 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -5677,7 +5728,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5681: \"$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_$ac_func=yes"
 else
@@ -5703,20 +5754,20 @@ done
 
 
     echo $ac_n "checking tm_tzadj in struct tm""... $ac_c" 1>&6
-echo "configure:5707: checking tm_tzadj in struct tm" >&5
+echo "configure:5758: checking tm_tzadj in struct tm" >&5
 if eval "test \"`echo '$''{'tcl_cv_member_tm_tzadj'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	cat > conftest.$ac_ext <<EOF
-#line 5713 "configure"
+#line 5764 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
 struct tm tm; tm.tm_tzadj;
 ; return 0; }
 EOF
-if { (eval echo configure:5720: \"$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_member_tm_tzadj=yes
 else
@@ -5737,20 +5788,20 @@ EOF
     fi
 
     echo $ac_n "checking tm_gmtoff in struct tm""... $ac_c" 1>&6
-echo "configure:5741: checking tm_gmtoff in struct tm" >&5
+echo "configure:5792: checking tm_gmtoff in struct tm" >&5
 if eval "test \"`echo '$''{'tcl_cv_member_tm_gmtoff'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	cat > conftest.$ac_ext <<EOF
-#line 5747 "configure"
+#line 5798 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
 struct tm tm; tm.tm_gmtoff;
 ; return 0; }
 EOF
-if { (eval echo configure:5754: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5805: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_member_tm_gmtoff=yes
 else
@@ -5775,13 +5826,13 @@ EOF
     # (like convex) have timezone functions, etc.
     #
     echo $ac_n "checking long timezone variable""... $ac_c" 1>&6
-echo "configure:5779: checking long timezone variable" >&5
+echo "configure:5830: checking long timezone variable" >&5
 if eval "test \"`echo '$''{'tcl_cv_timezone_long'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	cat > conftest.$ac_ext <<EOF
-#line 5785 "configure"
+#line 5836 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
@@ -5790,7 +5841,7 @@ extern long timezone;
 	    exit (0);
 ; return 0; }
 EOF
-if { (eval echo configure:5794: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5845: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_timezone_long=yes
 else
@@ -5813,13 +5864,13 @@ 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""... $ac_c" 1>&6
-echo "configure:5817: checking time_t timezone variable" >&5
+echo "configure:5868: checking time_t timezone variable" >&5
 if eval "test \"`echo '$''{'tcl_cv_timezone_time'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	    cat > conftest.$ac_ext <<EOF
-#line 5823 "configure"
+#line 5874 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
@@ -5828,7 +5879,7 @@ extern time_t timezone;
 		exit (0);
 ; return 0; }
 EOF
-if { (eval echo configure:5832: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5883: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_timezone_time=yes
 else
@@ -5855,12 +5906,12 @@ EOF
 #	in struct stat.  But we might be able to use fstatfs instead.
 #--------------------------------------------------------------------
 echo $ac_n "checking for st_blksize in struct stat""... $ac_c" 1>&6
-echo "configure:5859: checking for st_blksize in struct stat" >&5
+echo "configure:5910: checking for st_blksize in struct stat" >&5
 if eval "test \"`echo '$''{'ac_cv_struct_st_blksize'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5864 "configure"
+#line 5915 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -5868,7 +5919,7 @@ int main() {
 struct stat s; s.st_blksize;
 ; return 0; }
 EOF
-if { (eval echo configure:5872: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:5923: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_struct_st_blksize=yes
 else
@@ -5889,12 +5940,12 @@ EOF
 fi
 
 echo $ac_n "checking for fstatfs""... $ac_c" 1>&6
-echo "configure:5893: checking for fstatfs" >&5
+echo "configure:5944: checking for fstatfs" >&5
 if eval "test \"`echo '$''{'ac_cv_func_fstatfs'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5898 "configure"
+#line 5949 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char fstatfs(); below.  */
@@ -5917,7 +5968,7 @@ fstatfs();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5921: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5972: \"$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
@@ -5946,7 +5997,7 @@ fi
 #       data, this checks it and add memcmp.o to LIBOBJS if needed
 #--------------------------------------------------------------------
 echo $ac_n "checking for 8-bit clean memcmp""... $ac_c" 1>&6
-echo "configure:5950: checking for 8-bit clean memcmp" >&5
+echo "configure:6001: checking for 8-bit clean memcmp" >&5
 if eval "test \"`echo '$''{'ac_cv_func_memcmp_clean'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -5954,7 +6005,7 @@ else
   ac_cv_func_memcmp_clean=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 5958 "configure"
+#line 6009 "configure"
 #include "confdefs.h"
 
 main()
@@ -5964,7 +6015,7 @@ main()
 }
 
 EOF
-if { (eval echo configure:5968: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6019: \"$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
@@ -5988,12 +6039,12 @@ 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""... $ac_c" 1>&6
-echo "configure:5992: checking for memmove" >&5
+echo "configure:6043: checking for memmove" >&5
 if eval "test \"`echo '$''{'ac_cv_func_memmove'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5997 "configure"
+#line 6048 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char memmove(); below.  */
@@ -6016,7 +6067,7 @@ memmove();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6020: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6071: \"$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
@@ -6049,7 +6100,7 @@ fi
 #--------------------------------------------------------------------
 if test "x${ac_cv_func_strstr}" = "xyes"; then
     echo $ac_n "checking proper strstr implementation""... $ac_c" 1>&6
-echo "configure:6053: checking proper strstr implementation" >&5
+echo "configure:6104: checking proper strstr implementation" >&5
 if eval "test \"`echo '$''{'tcl_cv_strstr_unbroken'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6058,7 +6109,7 @@ else
   tcl_cv_strstr_unbroken=broken
 else
   cat > conftest.$ac_ext <<EOF
-#line 6062 "configure"
+#line 6113 "configure"
 #include "confdefs.h"
 
 	extern int strstr();
@@ -6067,7 +6118,7 @@ else
 	    exit(strstr("\0test", "test") ? 1 : 0);
 	}
 EOF
-if { (eval echo configure:6071: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6122: \"$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
@@ -6094,12 +6145,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for strtoul""... $ac_c" 1>&6
-echo "configure:6098: checking for strtoul" >&5
+echo "configure:6149: checking for strtoul" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strtoul'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6103 "configure"
+#line 6154 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strtoul(); below.  */
@@ -6122,7 +6173,7 @@ strtoul();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6126: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6177: \"$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
@@ -6144,7 +6195,7 @@ fi
 
 if test $tcl_ok = 1; then
     echo $ac_n "checking proper strtoul implementation""... $ac_c" 1>&6
-echo "configure:6148: checking proper strtoul implementation" >&5
+echo "configure:6199: checking proper strtoul implementation" >&5
 if eval "test \"`echo '$''{'tcl_cv_strtoul_unbroken'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6153,7 +6204,7 @@ else
   tcl_cv_strtoul_unbroken=broken
 else
   cat > conftest.$ac_ext <<EOF
-#line 6157 "configure"
+#line 6208 "configure"
 #include "confdefs.h"
 
 	extern int strtoul();
@@ -6169,7 +6220,7 @@ else
 	    exit(0);
 	}
 EOF
-if { (eval echo configure:6173: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6224: \"$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
@@ -6198,12 +6249,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for strtod""... $ac_c" 1>&6
-echo "configure:6202: checking for strtod" >&5
+echo "configure:6253: checking for strtod" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strtod'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6207 "configure"
+#line 6258 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strtod(); below.  */
@@ -6226,7 +6277,7 @@ strtod();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6230: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6281: \"$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
@@ -6248,7 +6299,7 @@ fi
 
 if test $tcl_ok = 1; then
     echo $ac_n "checking proper strtod implementation""... $ac_c" 1>&6
-echo "configure:6252: checking proper strtod implementation" >&5
+echo "configure:6303: checking proper strtod implementation" >&5
 if eval "test \"`echo '$''{'tcl_cv_strtod_unbroken'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6257,7 +6308,7 @@ else
   tcl_cv_strtod_unbroken=broken
 else
   cat > conftest.$ac_ext <<EOF
-#line 6261 "configure"
+#line 6312 "configure"
 #include "confdefs.h"
 
 	extern double strtod();
@@ -6273,7 +6324,7 @@ else
 	    exit(0);
 	}
 EOF
-if { (eval echo configure:6277: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6328: \"$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
@@ -6305,12 +6356,12 @@ fi
 
 
     echo $ac_n "checking for strtod""... $ac_c" 1>&6
-echo "configure:6309: checking for strtod" >&5
+echo "configure:6360: checking for strtod" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strtod'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6314 "configure"
+#line 6365 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strtod(); below.  */
@@ -6333,7 +6384,7 @@ strtod();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6337: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6388: \"$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
@@ -6355,7 +6406,7 @@ fi
 
     if test "$tcl_strtod" = 1; then
 	echo $ac_n "checking for Solaris2.4/Tru64 strtod bugs""... $ac_c" 1>&6
-echo "configure:6359: checking for Solaris2.4/Tru64 strtod bugs" >&5
+echo "configure:6410: checking for Solaris2.4/Tru64 strtod bugs" >&5
 if eval "test \"`echo '$''{'tcl_cv_strtod_buggy'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6364,7 +6415,7 @@ else
   tcl_cv_strtod_buggy=buggy
 else
   cat > conftest.$ac_ext <<EOF
-#line 6368 "configure"
+#line 6419 "configure"
 #include "confdefs.h"
 
 		extern double strtod();
@@ -6387,7 +6438,7 @@ else
 		    exit(0);
 		}
 EOF
-if { (eval echo configure:6391: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6442: \"$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
@@ -6418,12 +6469,12 @@ EOF
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for ANSI C header files""... $ac_c" 1>&6
-echo "configure:6422: checking for ANSI C header files" >&5
+echo "configure:6473: checking for ANSI C header files" >&5
 if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6427 "configure"
+#line 6478 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <stdarg.h>
@@ -6431,7 +6482,7 @@ else
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:6435: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:6486: \"$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*
@@ -6448,7 +6499,7 @@ 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 6452 "configure"
+#line 6503 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -6466,7 +6517,7 @@ 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 6470 "configure"
+#line 6521 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -6487,7 +6538,7 @@ if test "$cross_compiling" = yes; then
   :
 else
   cat > conftest.$ac_ext <<EOF
-#line 6491 "configure"
+#line 6542 "configure"
 #include "confdefs.h"
 #include <ctype.h>
 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
@@ -6498,7 +6549,7 @@ if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
 exit (0); }
 
 EOF
-if { (eval echo configure:6502: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6553: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -6522,12 +6573,12 @@ EOF
 fi
 
 echo $ac_n "checking for mode_t""... $ac_c" 1>&6
-echo "configure:6526: checking for mode_t" >&5
+echo "configure:6577: checking for mode_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_mode_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6531 "configure"
+#line 6582 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -6555,12 +6606,12 @@ EOF
 fi
 
 echo $ac_n "checking for pid_t""... $ac_c" 1>&6
-echo "configure:6559: checking for pid_t" >&5
+echo "configure:6610: checking for pid_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_pid_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6564 "configure"
+#line 6615 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -6588,12 +6639,12 @@ EOF
 fi
 
 echo $ac_n "checking for size_t""... $ac_c" 1>&6
-echo "configure:6592: checking for size_t" >&5
+echo "configure:6643: checking for size_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_size_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6597 "configure"
+#line 6648 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -6621,12 +6672,12 @@ EOF
 fi
 
 echo $ac_n "checking for uid_t in sys/types.h""... $ac_c" 1>&6
-echo "configure:6625: checking for uid_t in sys/types.h" >&5
+echo "configure:6676: checking for uid_t in sys/types.h" >&5
 if eval "test \"`echo '$''{'ac_cv_type_uid_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6630 "configure"
+#line 6681 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 EOF
@@ -6656,13 +6707,13 @@ fi
 
 
 echo $ac_n "checking for socklen_t""... $ac_c" 1>&6
-echo "configure:6660: checking for socklen_t" >&5
+echo "configure:6711: checking for socklen_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_socklen_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
     cat > conftest.$ac_ext <<EOF
-#line 6666 "configure"
+#line 6717 "configure"
 #include "confdefs.h"
 
     #include <sys/types.h>
@@ -6701,12 +6752,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for opendir""... $ac_c" 1>&6
-echo "configure:6705: checking for opendir" >&5
+echo "configure:6756: checking for opendir" >&5
 if eval "test \"`echo '$''{'ac_cv_func_opendir'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6710 "configure"
+#line 6761 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char opendir(); below.  */
@@ -6729,7 +6780,7 @@ opendir();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6733: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6784: \"$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
@@ -6762,13 +6813,13 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking union wait""... $ac_c" 1>&6
-echo "configure:6766: checking union wait" >&5
+echo "configure:6817: checking union wait" >&5
 if eval "test \"`echo '$''{'tcl_cv_union_wait'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
     cat > conftest.$ac_ext <<EOF
-#line 6772 "configure"
+#line 6823 "configure"
 #include "confdefs.h"
 #include <sys/types.h> 
 #include <sys/wait.h>
@@ -6780,7 +6831,7 @@ WIFEXITED(x);		/* Generates compiler error if WIFEXITED
     
 ; return 0; }
 EOF
-if { (eval echo configure:6784: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6835: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_cv_union_wait=yes
 else
@@ -6807,12 +6858,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for strncasecmp""... $ac_c" 1>&6
-echo "configure:6811: checking for strncasecmp" >&5
+echo "configure:6862: checking for strncasecmp" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strncasecmp'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6816 "configure"
+#line 6867 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strncasecmp(); below.  */
@@ -6835,7 +6886,7 @@ strncasecmp();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6839: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6890: \"$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
@@ -6857,7 +6908,7 @@ fi
 
 if test "$tcl_ok" = 0; then
     echo $ac_n "checking for strncasecmp in -lsocket""... $ac_c" 1>&6
-echo "configure:6861: checking for strncasecmp in -lsocket" >&5
+echo "configure:6912: checking for strncasecmp in -lsocket" >&5
 ac_lib_var=`echo socket'_'strncasecmp | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -6865,7 +6916,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lsocket  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 6869 "configure"
+#line 6920 "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
@@ -6876,7 +6927,7 @@ int main() {
 strncasecmp()
 ; return 0; }
 EOF
-if { (eval echo configure:6880: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6931: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -6900,7 +6951,7 @@ fi
 fi
 if test "$tcl_ok" = 0; then
     echo $ac_n "checking for strncasecmp in -linet""... $ac_c" 1>&6
-echo "configure:6904: checking for strncasecmp in -linet" >&5
+echo "configure:6955: checking for strncasecmp in -linet" >&5
 ac_lib_var=`echo inet'_'strncasecmp | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -6908,7 +6959,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-linet  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 6912 "configure"
+#line 6963 "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
@@ -6919,7 +6970,7 @@ int main() {
 strncasecmp()
 ; return 0; }
 EOF
-if { (eval echo configure:6923: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:6974: \"$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
@@ -6957,12 +7008,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for BSDgettimeofday""... $ac_c" 1>&6
-echo "configure:6961: checking for BSDgettimeofday" >&5
+echo "configure:7012: checking for BSDgettimeofday" >&5
 if eval "test \"`echo '$''{'ac_cv_func_BSDgettimeofday'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6966 "configure"
+#line 7017 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char BSDgettimeofday(); below.  */
@@ -6985,7 +7036,7 @@ BSDgettimeofday();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6989: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7040: \"$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
@@ -7007,12 +7058,12 @@ else
   echo "$ac_t""no" 1>&6
 
     echo $ac_n "checking for gettimeofday""... $ac_c" 1>&6
-echo "configure:7011: checking for gettimeofday" >&5
+echo "configure:7062: checking for gettimeofday" >&5
 if eval "test \"`echo '$''{'ac_cv_func_gettimeofday'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7016 "configure"
+#line 7067 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char gettimeofday(); below.  */
@@ -7035,7 +7086,7 @@ gettimeofday();
 
 ; return 0; }
 EOF
-if { (eval echo configure:7039: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7090: \"$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
@@ -7062,13 +7113,13 @@ fi
 fi
 
 echo $ac_n "checking for gettimeofday declaration""... $ac_c" 1>&6
-echo "configure:7066: checking for gettimeofday declaration" >&5
+echo "configure:7117: checking for gettimeofday declaration" >&5
 if eval "test \"`echo '$''{'tcl_cv_grep_gettimeofday'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
     cat > conftest.$ac_ext <<EOF
-#line 7072 "configure"
+#line 7123 "configure"
 #include "confdefs.h"
 #include <sys/time.h>
 EOF
@@ -7099,14 +7150,14 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking whether char is unsigned""... $ac_c" 1>&6
-echo "configure:7103: checking whether char is unsigned" >&5
+echo "configure:7154: checking whether char is unsigned" >&5
 if eval "test \"`echo '$''{'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.$ac_ext <<EOF
-#line 7110 "configure"
+#line 7161 "configure"
 #include "confdefs.h"
 #ifdef __CHAR_UNSIGNED__
   yes
@@ -7128,7 +7179,7 @@ if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 7132 "configure"
+#line 7183 "configure"
 #include "confdefs.h"
 /* volatile prevents gcc2 from optimizing the test away on sparcs.  */
 #if !defined(__STDC__) || __STDC__ != 1
@@ -7138,7 +7189,7 @@ main() {
   volatile char c = 255; exit(c < 0);
 }
 EOF
-if { (eval echo configure:7142: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:7193: \"$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
@@ -7162,13 +7213,13 @@ EOF
 fi
 
 echo $ac_n "checking signed char declarations""... $ac_c" 1>&6
-echo "configure:7166: checking signed char declarations" >&5
+echo "configure:7217: checking signed char declarations" >&5
 if eval "test \"`echo '$''{'tcl_cv_char_signed'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
     cat > conftest.$ac_ext <<EOF
-#line 7172 "configure"
+#line 7223 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -7178,7 +7229,7 @@ int main() {
 	
 ; return 0; }
 EOF
-if { (eval echo configure:7182: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:7233: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_char_signed=yes
 else
@@ -7203,7 +7254,7 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for a putenv() that copies the buffer""... $ac_c" 1>&6
-echo "configure:7207: checking for a putenv() that copies the buffer" >&5
+echo "configure:7258: checking for a putenv() that copies the buffer" >&5
 if eval "test \"`echo '$''{'tcl_cv_putenv_copy'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7212,7 +7263,7 @@ else
   tcl_cv_putenv_copy=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 7216 "configure"
+#line 7267 "configure"
 #include "confdefs.h"
 
 	#include <stdlib.h>
@@ -7234,7 +7285,7 @@ else
 	}
     
 EOF
-if { (eval echo configure:7238: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:7289: \"$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
@@ -7274,17 +7325,17 @@ fi
     if test "$langinfo_ok" = "yes"; then
 	ac_safe=`echo "langinfo.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for langinfo.h""... $ac_c" 1>&6
-echo "configure:7278: checking for langinfo.h" >&5
+echo "configure:7329: checking for langinfo.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 7283 "configure"
+#line 7334 "configure"
 #include "confdefs.h"
 #include <langinfo.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:7288: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:7339: \"$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*
@@ -7308,21 +7359,21 @@ fi
 
     fi
     echo $ac_n "checking whether to use nl_langinfo""... $ac_c" 1>&6
-echo "configure:7312: checking whether to use nl_langinfo" >&5
+echo "configure:7363: checking whether to use nl_langinfo" >&5
     if test "$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.$ac_ext <<EOF
-#line 7319 "configure"
+#line 7370 "configure"
 #include "confdefs.h"
 #include <langinfo.h>
 int main() {
 nl_langinfo(CODESET);
 ; return 0; }
 EOF
-if { (eval echo configure:7326: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:7377: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_langinfo_h=yes
 else
@@ -7355,17 +7406,17 @@ if test "`uname -s`" = "Darwin" ; then
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:7359: checking for $ac_hdr" >&5
+echo "configure:7410: 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 7364 "configure"
+#line 7415 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:7369: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:7420: \"$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*
@@ -7394,12 +7445,12 @@ done
     for ac_func in copyfile
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:7398: checking for $ac_func" >&5
+echo "configure:7449: 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 7403 "configure"
+#line 7454 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -7422,7 +7473,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:7426: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7477: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -7451,17 +7502,17 @@ done
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:7455: checking for $ac_hdr" >&5
+echo "configure:7506: 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 7460 "configure"
+#line 7511 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:7465: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:7516: \"$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*
@@ -7490,12 +7541,12 @@ done
 	for ac_func in OSSpinLockLock
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:7494: checking for $ac_func" >&5
+echo "configure:7545: 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 7499 "configure"
+#line 7550 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -7518,7 +7569,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:7522: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7573: \"$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
@@ -7545,12 +7596,12 @@ done
 	for ac_func in pthread_atfork
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:7549: checking for $ac_func" >&5
+echo "configure:7600: 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 7554 "configure"
+#line 7605 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -7573,7 +7624,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:7577: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7628: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -7614,17 +7665,17 @@ EOF
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:7618: checking for $ac_hdr" >&5
+echo "configure:7669: 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 7623 "configure"
+#line 7674 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:7628: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:7679: \"$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*
@@ -7652,14 +7703,14 @@ done
 
     if test "$ac_cv_header_AvailabilityMacros_h" = yes; then
 	echo $ac_n "checking if weak import is available""... $ac_c" 1>&6
-echo "configure:7656: checking if weak import is available" >&5
+echo "configure:7707: checking if weak import is available" >&5
 if eval "test \"`echo '$''{'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 7663 "configure"
+#line 7714 "configure"
 #include "confdefs.h"
 
 		    #ifdef __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
@@ -7675,7 +7726,7 @@ int main() {
 rand();
 ; return 0; }
 EOF
-if { (eval echo configure:7679: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7730: \"$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
@@ -7703,13 +7754,13 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for fts""... $ac_c" 1>&6
-echo "configure:7707: checking for fts" >&5
+echo "configure:7758: checking for fts" >&5
 if eval "test \"`echo '$''{'tcl_cv_api_fts'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
     cat > conftest.$ac_ext <<EOF
-#line 7713 "configure"
+#line 7764 "configure"
 #include "confdefs.h"
 
 	    #include <sys/param.h>
@@ -7724,7 +7775,7 @@ int main() {
 	
 ; return 0; }
 EOF
-if { (eval echo configure:7728: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:7779: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_cv_api_fts=yes
 else
@@ -7756,17 +7807,17 @@ fi
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:7760: checking for $ac_hdr" >&5
+echo "configure:7811: 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 7765 "configure"
+#line 7816 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:7770: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:7821: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -7796,17 +7847,17 @@ done
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:7800: checking for $ac_hdr" >&5
+echo "configure:7851: 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 7805 "configure"
+#line 7856 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:7810: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:7861: \"$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*
@@ -7834,7 +7885,7 @@ done
 
     
     echo $ac_n "checking system version""... $ac_c" 1>&6
-echo "configure:7838: checking system version" >&5
+echo "configure:7889: checking system version" >&5
 if eval "test \"`echo '$''{'tcl_cv_sys_version'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -7865,7 +7916,7 @@ echo "$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:7869: checking FIONBIO vs. O_NONBLOCK for nonblocking I/O" >&5
+echo "configure:7920: 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
@@ -7928,7 +7979,7 @@ if test "`uname -s`" = "Darwin" ; then
     
     if test "`uname -s`" = "Darwin" ; then
 	echo $ac_n "checking how to package libraries""... $ac_c" 1>&6
-echo "configure:7932: checking how to package libraries" >&5
+echo "configure:7983: checking how to package libraries" >&5
 	# Check whether --enable-framework or --disable-framework was given.
 if test "${enable_framework+set}" = set; then
   enableval="$enable_framework"