* 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.in (Darwin): remove 64-bit arch flags from CFLAGS for
	combined 32-bit and 64-bit universal builds, as neither TkAqua nor TkX11
	can be built for 64-bit at present.
	* unix/configure: autoconf-2.13

	* macosx/README: updates for x86_64 support in Tcl.

	* macosx/tkMacOSXInit.c (TkpInit): when available, use public
	TransformProcessType() API instead of CPSEnableForegroundOperation() SPI
	to notify the window server that we are a GUI application.

	* macosx/tkMacOSXWm.c (WmAttrGetTitlePath): use HIWindow API on >=Tiger.

	* macosx/tkMacOSXMouseEvent.c (GenerateToolbarButtonEvent):
	* macosx/tkMacOSXMenus.c (GenerateEditEvent):
	* macosx/tkMacOSXMenu.c (MenuSelectEvent): bzero XVirtualEvent structure
	before use to ensure all fields are initialized. [Bug 1542205]

3 files changed, 237 insertions, 163 deletions

diff --git a/unix/configure b/unix/configure
index 00a53d5..62a6379 100755
--- a/unix/configure
+++ b/unix/configure
@@ -2909,11 +2909,24 @@ 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""... $ac_c" 1>&6
-echo "configure:2917: checking if ld accepts -single_module flag" >&5
+echo "configure:2930: checking if ld accepts -single_module flag" >&5
 if eval "test \"`echo '$''{'tcl_cv_ld_single_module'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2921,14 +2934,14 @@ else
 		hold_ldflags=$LDFLAGS
 		LDFLAGS="$LDFLAGS -dynamiclib -Wl,-single_module"
 		cat > conftest.$ac_ext <<EOF
-#line 2925 "configure"
+#line 2938 "configure"
 #include "confdefs.h"
 
 int main() {
 int i;
 ; return 0; }
 EOF
-if { (eval echo configure:2932: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2945: \"$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
@@ -2950,12 +2963,12 @@ 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""... $ac_c" 1>&6
-echo "configure:2959: checking if ld accepts -search_paths_first flag" >&5
+echo "configure:2972: checking if ld accepts -search_paths_first flag" >&5
 if eval "test \"`echo '$''{'tcl_cv_ld_search_paths_first'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2963,14 +2976,14 @@ else
 		hold_ldflags=$LDFLAGS
 		LDFLAGS="$LDFLAGS -Wl,-search_paths_first"
 		cat > conftest.$ac_ext <<EOF
-#line 2967 "configure"
+#line 2980 "configure"
 #include "confdefs.h"
 
 int main() {
 int i;
 ; return 0; }
 EOF
-if { (eval echo configure:2974: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2987: \"$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
@@ -2993,7 +3006,7 @@ 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""... $ac_c" 1>&6
-echo "configure:2997: checking whether to use CoreFoundation" >&5
+echo "configure:3010: checking whether to use CoreFoundation" >&5
 	    # Check whether --enable-corefoundation or --disable-corefoundation was given.
 if test "${enable_corefoundation+set}" = set; then
   enableval="$enable_corefoundation"
@@ -3005,28 +3018,28 @@ fi
 	    echo "$ac_t""$tcl_corefoundation" 1>&6
 	    if test $tcl_corefoundation = yes; then
 		echo $ac_n "checking for CoreFoundation.framework""... $ac_c" 1>&6
-echo "configure:3009: checking for CoreFoundation.framework" >&5
+echo "configure:3022: checking for CoreFoundation.framework" >&5
 if eval "test \"`echo '$''{'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 3023 "configure"
+#line 3036 "configure"
 #include "confdefs.h"
 #include <CoreFoundation/CoreFoundation.h>
 int main() {
 CFBundleRef b = CFBundleGetMainBundle();
 ; return 0; }
 EOF
-if { (eval echo configure:3030: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3043: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_cv_lib_corefoundation=yes
 else
@@ -3049,6 +3062,44 @@ 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""... $ac_c" 1>&6
+echo "configure:3068: checking for 64-bit CoreFoundation" >&5
+if eval "test \"`echo '$''{'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 3076 "configure"
+#include "confdefs.h"
+#include <CoreFoundation/CoreFoundation.h>
+int main() {
+CFBundleRef b = CFBundleGetMainBundle();
+; return 0; }
+EOF
+if { (eval echo configure:3083: \"$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
@@ -3341,7 +3392,7 @@ 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""... $ac_c" 1>&6
-echo "configure:3345: checking for ld accepts -Bexport flag" >&5
+echo "configure:3396: checking for ld accepts -Bexport flag" >&5
 if eval "test \"`echo '$''{'tcl_cv_ld_Bexport'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3349,14 +3400,14 @@ else
 		hold_ldflags=$LDFLAGS
 		LDFLAGS="$LDFLAGS -Wl,-Bexport"
 		cat > conftest.$ac_ext <<EOF
-#line 3353 "configure"
+#line 3404 "configure"
 #include "confdefs.h"
 
 int main() {
 int i;
 ; return 0; }
 EOF
-if { (eval echo configure:3360: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3411: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   tcl_cv_ld_Bexport=yes
 else
@@ -3403,13 +3454,13 @@ echo "$ac_t""$tcl_cv_ld_Bexport" 1>&6
 
     if test "x$DL_OBJS" = "xtclLoadAout.o" ; then
 	echo $ac_n "checking sys/exec.h""... $ac_c" 1>&6
-echo "configure:3407: checking sys/exec.h" >&5
+echo "configure:3458: checking sys/exec.h" >&5
 if eval "test \"`echo '$''{'tcl_cv_sysexec_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	cat > conftest.$ac_ext <<EOF
-#line 3413 "configure"
+#line 3464 "configure"
 #include "confdefs.h"
 #include <sys/exec.h>
 int main() {
@@ -3427,7 +3478,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:3431: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3482: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_sysexec_h=usable
 else
@@ -3447,13 +3498,13 @@ EOF
 
 	else
 	    echo $ac_n "checking a.out.h""... $ac_c" 1>&6
-echo "configure:3451: checking a.out.h" >&5
+echo "configure:3502: checking a.out.h" >&5
 if eval "test \"`echo '$''{'tcl_cv_aout_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	    cat > conftest.$ac_ext <<EOF
-#line 3457 "configure"
+#line 3508 "configure"
 #include "confdefs.h"
 #include <a.out.h>
 int main() {
@@ -3471,7 +3522,7 @@ int main() {
 	    
 ; return 0; }
 EOF
-if { (eval echo configure:3475: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3526: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_aout_h=usable
 else
@@ -3491,13 +3542,13 @@ EOF
 
 	    else
 		echo $ac_n "checking sys/exec_aout.h""... $ac_c" 1>&6
-echo "configure:3495: checking sys/exec_aout.h" >&5
+echo "configure:3546: checking sys/exec_aout.h" >&5
 if eval "test \"`echo '$''{'tcl_cv_sysexecaout_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 		cat > conftest.$ac_ext <<EOF
-#line 3501 "configure"
+#line 3552 "configure"
 #include "confdefs.h"
 #include <sys/exec_aout.h>
 int main() {
@@ -3515,7 +3566,7 @@ int main() {
 		
 ; return 0; }
 EOF
-if { (eval echo configure:3519: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3570: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_sysexecaout_h=usable
 else
@@ -3668,7 +3719,7 @@ fi
 
 
     echo $ac_n "checking for build with symbols""... $ac_c" 1>&6
-echo "configure:3672: checking for build with symbols" >&5
+echo "configure:3723: checking for build with symbols" >&5
     # Check whether --enable-symbols or --disable-symbols was given.
 if test "${enable_symbols+set}" = set; then
   enableval="$enable_symbols"
@@ -3729,21 +3780,21 @@ TK_DBGX=${DBGX}
 
 
     echo $ac_n "checking for required early compiler flags""... $ac_c" 1>&6
-echo "configure:3733: checking for required early compiler flags" >&5
+echo "configure:3784: 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 3740 "configure"
+#line 3791 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 int main() {
 char *p = (char *)strtoll; char *q = (char *)strtoull;
 ; return 0; }
 EOF
-if { (eval echo configure:3747: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3798: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__isoc99_source=no
 else
@@ -3751,7 +3802,7 @@ else
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   cat > conftest.$ac_ext <<EOF
-#line 3755 "configure"
+#line 3806 "configure"
 #include "confdefs.h"
 #define _ISOC99_SOURCE 1
 #include <stdlib.h>
@@ -3759,7 +3810,7 @@ int main() {
 char *p = (char *)strtoll; char *q = (char *)strtoull;
 ; return 0; }
 EOF
-if { (eval echo configure:3763: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3814: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__isoc99_source=yes
 else
@@ -3786,14 +3837,14 @@ EOF
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3790 "configure"
+#line 3841 "configure"
 #include "confdefs.h"
 #include <sys/stat.h>
 int main() {
 struct stat64 buf; int i = stat64("/", &buf);
 ; return 0; }
 EOF
-if { (eval echo configure:3797: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3848: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__largefile64_source=no
 else
@@ -3801,7 +3852,7 @@ else
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   cat > conftest.$ac_ext <<EOF
-#line 3805 "configure"
+#line 3856 "configure"
 #include "confdefs.h"
 #define _LARGEFILE64_SOURCE 1
 #include <sys/stat.h>
@@ -3809,7 +3860,7 @@ int main() {
 struct stat64 buf; int i = stat64("/", &buf);
 ; return 0; }
 EOF
-if { (eval echo configure:3813: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3864: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__largefile64_source=yes
 else
@@ -3836,14 +3887,14 @@ EOF
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3840 "configure"
+#line 3891 "configure"
 #include "confdefs.h"
 #include <sys/stat.h>
 int main() {
 char *p = (char *)open64;
 ; return 0; }
 EOF
-if { (eval echo configure:3847: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3898: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__largefile_source64=no
 else
@@ -3851,7 +3902,7 @@ else
   cat conftest.$ac_ext >&5
   rm -rf conftest*
   cat > conftest.$ac_ext <<EOF
-#line 3855 "configure"
+#line 3906 "configure"
 #include "confdefs.h"
 #define _LARGEFILE_SOURCE64 1
 #include <sys/stat.h>
@@ -3859,7 +3910,7 @@ int main() {
 char *p = (char *)open64;
 ; return 0; }
 EOF
-if { (eval echo configure:3863: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3914: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_flag__largefile_source64=yes
 else
@@ -3890,7 +3941,7 @@ EOF
 
 
     echo $ac_n "checking for 64-bit integer type""... $ac_c" 1>&6
-echo "configure:3894: checking for 64-bit integer type" >&5
+echo "configure:3945: checking for 64-bit integer type" >&5
     if eval "test \"`echo '$''{'tcl_cv_type_64bit'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3898,14 +3949,14 @@ else
 	tcl_cv_type_64bit=none
 	# See if the compiler knows natively about __int64
 	cat > conftest.$ac_ext <<EOF
-#line 3902 "configure"
+#line 3953 "configure"
 #include "confdefs.h"
 
 int main() {
 __int64 value = (__int64) 0;
 ; return 0; }
 EOF
-if { (eval echo configure:3909: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3960: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_type_64bit=__int64
 else
@@ -3919,7 +3970,7 @@ rm -f conftest*
 	# type that is our current guess for a 64-bit type inside this check
 	# program, so it should be modified only carefully...
         cat > conftest.$ac_ext <<EOF
-#line 3923 "configure"
+#line 3974 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -3928,7 +3979,7 @@ switch (0) {
         }
 ; return 0; }
 EOF
-if { (eval echo configure:3932: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3983: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_type_64bit=${tcl_type_64bit}
 else
@@ -3953,13 +4004,13 @@ EOF
 
 	# Now check for auxiliary declarations
 	echo $ac_n "checking for struct dirent64""... $ac_c" 1>&6
-echo "configure:3957: checking for struct dirent64" >&5
+echo "configure:4008: checking for struct dirent64" >&5
 if eval "test \"`echo '$''{'tcl_cv_struct_dirent64'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	    cat > conftest.$ac_ext <<EOF
-#line 3963 "configure"
+#line 4014 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/dirent.h>
@@ -3967,7 +4018,7 @@ int main() {
 struct dirent64 p;
 ; return 0; }
 EOF
-if { (eval echo configure:3971: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4022: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_struct_dirent64=yes
 else
@@ -3988,13 +4039,13 @@ EOF
 	fi
 
 	echo $ac_n "checking for struct stat64""... $ac_c" 1>&6
-echo "configure:3992: checking for struct stat64" >&5
+echo "configure:4043: checking for struct stat64" >&5
 if eval "test \"`echo '$''{'tcl_cv_struct_stat64'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	    cat > conftest.$ac_ext <<EOF
-#line 3998 "configure"
+#line 4049 "configure"
 #include "confdefs.h"
 #include <sys/stat.h>
 int main() {
@@ -4002,7 +4053,7 @@ struct stat64 p;
 
 ; return 0; }
 EOF
-if { (eval echo configure:4006: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4057: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_struct_stat64=yes
 else
@@ -4025,12 +4076,12 @@ EOF
 	for ac_func in open64 lseek64
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:4029: checking for $ac_func" >&5
+echo "configure:4080: 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 4034 "configure"
+#line 4085 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -4053,7 +4104,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4057: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4108: \"$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
@@ -4078,13 +4129,13 @@ fi
 done
 
 	echo $ac_n "checking for off64_t""... $ac_c" 1>&6
-echo "configure:4082: checking for off64_t" >&5
+echo "configure:4133: checking for off64_t" >&5
 	if eval "test \"`echo '$''{'tcl_cv_type_off64_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	    cat > conftest.$ac_ext <<EOF
-#line 4088 "configure"
+#line 4139 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 int main() {
@@ -4092,7 +4143,7 @@ off64_t offset;
 
 ; return 0; }
 EOF
-if { (eval echo configure:4096: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4147: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_type_off64_t=yes
 else
@@ -4123,14 +4174,14 @@ EOF
 #--------------------------------------------------------------------
 
 echo $ac_n "checking whether byte ordering is bigendian""... $ac_c" 1>&6
-echo "configure:4127: checking whether byte ordering is bigendian" >&5
+echo "configure:4178: checking whether byte ordering is bigendian" >&5
 if eval "test \"`echo '$''{'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 4134 "configure"
+#line 4185 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/param.h>
@@ -4141,11 +4192,11 @@ int main() {
 #endif
 ; return 0; }
 EOF
-if { (eval echo configure:4145: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4196: \"$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 4149 "configure"
+#line 4200 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/param.h>
@@ -4156,7 +4207,7 @@ int main() {
 #endif
 ; return 0; }
 EOF
-if { (eval echo configure:4160: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4211: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_bigendian=yes
 else
@@ -4176,7 +4227,7 @@ if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 4180 "configure"
+#line 4231 "configure"
 #include "confdefs.h"
 main () {
   /* Are we little or big endian?  From Harbison&Steele.  */
@@ -4189,7 +4240,7 @@ main () {
   exit (u.c[sizeof (long) - 1] == 1);
 }
 EOF
-if { (eval echo configure:4193: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:4244: \"$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
@@ -4241,20 +4292,20 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for fd_set in sys/types""... $ac_c" 1>&6
-echo "configure:4245: checking for fd_set in sys/types" >&5
+echo "configure:4296: checking for fd_set in sys/types" >&5
 if eval "test \"`echo '$''{'tcl_cv_type_fd_set'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
     cat > conftest.$ac_ext <<EOF
-#line 4251 "configure"
+#line 4302 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 int main() {
 fd_set readMask, writeMask;
 ; return 0; }
 EOF
-if { (eval echo configure:4258: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4309: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_type_fd_set=yes
 else
@@ -4270,13 +4321,13 @@ echo "$ac_t""$tcl_cv_type_fd_set" 1>&6
 tk_ok=$tcl_cv_type_fd_set
 if test $tk_ok = no; then
     echo $ac_n "checking for fd_mask in sys/select""... $ac_c" 1>&6
-echo "configure:4274: checking for fd_mask in sys/select" >&5
+echo "configure:4325: checking for fd_mask in sys/select" >&5
 if eval "test \"`echo '$''{'tcl_cv_grep_fd_mask'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
 	cat > conftest.$ac_ext <<EOF
-#line 4280 "configure"
+#line 4331 "configure"
 #include "confdefs.h"
 #include <sys/select.h>
 EOF
@@ -4316,17 +4367,17 @@ for ac_hdr in sys/time.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:4320: checking for $ac_hdr" >&5
+echo "configure:4371: 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 4325 "configure"
+#line 4376 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:4330: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:4381: \"$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*
@@ -4353,12 +4404,12 @@ fi
 done
 
 echo $ac_n "checking whether time.h and sys/time.h may both be included""... $ac_c" 1>&6
-echo "configure:4357: checking whether time.h and sys/time.h may both be included" >&5
+echo "configure:4408: checking whether time.h and sys/time.h may both be included" >&5
 if eval "test \"`echo '$''{'ac_cv_header_time'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4362 "configure"
+#line 4413 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/time.h>
@@ -4367,7 +4418,7 @@ int main() {
 struct tm *tp;
 ; return 0; }
 EOF
-if { (eval echo configure:4371: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4422: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_header_time=yes
 else
@@ -4397,12 +4448,12 @@ fi
 
 
     echo $ac_n "checking for strtod""... $ac_c" 1>&6
-echo "configure:4401: checking for strtod" >&5
+echo "configure:4452: checking for strtod" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strtod'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4406 "configure"
+#line 4457 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strtod(); below.  */
@@ -4425,7 +4476,7 @@ strtod();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4429: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4480: \"$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
@@ -4447,7 +4498,7 @@ fi
 
     if test "$tcl_strtod" = 1; then
 	echo $ac_n "checking for Solaris2.4/Tru64 strtod bugs""... $ac_c" 1>&6
-echo "configure:4451: checking for Solaris2.4/Tru64 strtod bugs" >&5
+echo "configure:4502: checking for Solaris2.4/Tru64 strtod bugs" >&5
 if eval "test \"`echo '$''{'tcl_cv_strtod_buggy'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -4456,7 +4507,7 @@ else
   tcl_cv_strtod_buggy=buggy
 else
   cat > conftest.$ac_ext <<EOF
-#line 4460 "configure"
+#line 4511 "configure"
 #include "confdefs.h"
 
 		extern double strtod();
@@ -4479,7 +4530,7 @@ else
 		    exit(0);
 		}
 EOF
-if { (eval echo configure:4483: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:4534: \"$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
@@ -4510,12 +4561,12 @@ EOF
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for ANSI C header files""... $ac_c" 1>&6
-echo "configure:4514: checking for ANSI C header files" >&5
+echo "configure:4565: checking for ANSI C header files" >&5
 if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4519 "configure"
+#line 4570 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <stdarg.h>
@@ -4523,7 +4574,7 @@ else
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:4527: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:4578: \"$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*
@@ -4540,7 +4591,7 @@ 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 4544 "configure"
+#line 4595 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -4558,7 +4609,7 @@ 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 4562 "configure"
+#line 4613 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -4579,7 +4630,7 @@ if test "$cross_compiling" = yes; then
   :
 else
   cat > conftest.$ac_ext <<EOF
-#line 4583 "configure"
+#line 4634 "configure"
 #include "confdefs.h"
 #include <ctype.h>
 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
@@ -4590,7 +4641,7 @@ if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
 exit (0); }
 
 EOF
-if { (eval echo configure:4594: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:4645: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -4614,12 +4665,12 @@ EOF
 fi
 
 echo $ac_n "checking for mode_t""... $ac_c" 1>&6
-echo "configure:4618: checking for mode_t" >&5
+echo "configure:4669: checking for mode_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_mode_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4623 "configure"
+#line 4674 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -4647,12 +4698,12 @@ EOF
 fi
 
 echo $ac_n "checking for pid_t""... $ac_c" 1>&6
-echo "configure:4651: checking for pid_t" >&5
+echo "configure:4702: checking for pid_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_pid_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4656 "configure"
+#line 4707 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -4680,12 +4731,12 @@ EOF
 fi
 
 echo $ac_n "checking for size_t""... $ac_c" 1>&6
-echo "configure:4684: checking for size_t" >&5
+echo "configure:4735: checking for size_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_size_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4689 "configure"
+#line 4740 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -4713,12 +4764,12 @@ EOF
 fi
 
 echo $ac_n "checking for uid_t in sys/types.h""... $ac_c" 1>&6
-echo "configure:4717: checking for uid_t in sys/types.h" >&5
+echo "configure:4768: checking for uid_t in sys/types.h" >&5
 if eval "test \"`echo '$''{'ac_cv_type_uid_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4722 "configure"
+#line 4773 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 EOF
@@ -4752,20 +4803,20 @@ fi
 #-------------------------------------------
 
 echo $ac_n "checking pw_gecos in struct pwd""... $ac_c" 1>&6
-echo "configure:4756: checking pw_gecos in struct pwd" >&5
+echo "configure:4807: checking pw_gecos in struct pwd" >&5
 if eval "test \"`echo '$''{'tcl_cv_pwd_pw_gecos'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
     cat > conftest.$ac_ext <<EOF
-#line 4762 "configure"
+#line 4813 "configure"
 #include "confdefs.h"
 #include <pwd.h>
 int main() {
 struct passwd pwd; pwd.pw_gecos;
 ; return 0; }
 EOF
-if { (eval echo configure:4769: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:4820: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tcl_cv_pwd_pw_gecos=yes
 else
@@ -4791,7 +4842,7 @@ fi
 
 if test "`uname -s`" = "Darwin" ; then
     echo $ac_n "checking whether to use Aqua""... $ac_c" 1>&6
-echo "configure:4795: checking whether to use Aqua" >&5
+echo "configure:4846: checking whether to use Aqua" >&5
     # Check whether --enable-aqua or --disable-aqua was given.
 if test "${enable_aqua+set}" = set; then
   enableval="$enable_aqua"
@@ -4815,11 +4866,10 @@ fi
 	fi
     fi
     echo "$ac_t""$tk_aqua" 1>&6
-    if test $do64bit_ok = no ; then
-	# remove -arch ppc64 from CFLAGS for fat builds as neither Aqua nor X11
-	# can be built for 64bit at present (no 64bit GUI libraries).
-	CFLAGS="`echo "$CFLAGS" | sed -e 's/-arch ppc64/-arch ppc/g'`"
-    fi
+    # remove 64-bit arch flags from CFLAGS for combined 32-bit and 64-bit fat
+    # builds, as neither TkAqua nor TkX11 can be built for 64-bit at present.
+    test "$fat_32_64" = yes && \
+	CFLAGS="`echo "$CFLAGS " | sed -e 's/-arch ppc64 / /g' -e 's/-arch x86_64 / /g'`"
 else
     tk_aqua=no
 fi
@@ -4854,7 +4904,7 @@ else
 # Uses ac_ vars as temps to allow command line to override cache and checks.
 # --without-x overrides everything else, but does not touch the cache.
 echo $ac_n "checking for X""... $ac_c" 1>&6
-echo "configure:4858: checking for X" >&5
+echo "configure:4908: checking for X" >&5
 
 # Check whether --with-x or --without-x was given.
 if test "${with_x+set}" = set; then
@@ -4916,12 +4966,12 @@ if test "$ac_x_includes" = NO; then
 
   # First, try using that file with no special directory specified.
 cat > conftest.$ac_ext <<EOF
-#line 4920 "configure"
+#line 4970 "configure"
 #include "confdefs.h"
 #include <$x_direct_test_include>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:4925: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:4975: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -4990,14 +5040,14 @@ if test "$ac_x_libraries" = NO; then
   ac_save_LIBS="$LIBS"
   LIBS="-l$x_direct_test_library $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4994 "configure"
+#line 5044 "configure"
 #include "confdefs.h"
 
 int main() {
 ${x_direct_test_function}()
 ; return 0; }
 EOF
-if { (eval echo configure:5001: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5051: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   LIBS="$ac_save_LIBS"
 # We can link X programs with no special library path.
@@ -5087,12 +5137,12 @@ fi
     if test "$no_x" = ""; then
 	if test "$x_includes" = ""; then
 	    cat > conftest.$ac_ext <<EOF
-#line 5091 "configure"
+#line 5141 "configure"
 #include "confdefs.h"
 #include <X11/XIntrinsic.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:5096: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5146: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -5112,15 +5162,15 @@ rm -f conftest*
     fi
     if test "$no_x" = "yes" -o "$not_really_there" = "yes"; then
 	echo $ac_n "checking for X11 header files""... $ac_c" 1>&6
-echo "configure:5116: checking for X11 header files" >&5
+echo "configure:5166: checking for X11 header files" >&5
 	found_xincludes="no"
 	cat > conftest.$ac_ext <<EOF
-#line 5119 "configure"
+#line 5169 "configure"
 #include "confdefs.h"
 #include <X11/Intrinsic.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:5124: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:5174: \"$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*
@@ -5156,7 +5206,7 @@ rm -f conftest*
 
     if test "$no_x" = yes; then
 	echo $ac_n "checking for X11 libraries""... $ac_c" 1>&6
-echo "configure:5160: checking for X11 libraries" >&5
+echo "configure:5210: checking for X11 libraries" >&5
 	XLIBSW=nope
 	dirs="/usr/unsupported/lib /usr/local/lib /usr/X386/lib /usr/X11R6/lib /usr/X11R5/lib /usr/lib/X11R5 /usr/lib/X11R4 /usr/openwin/lib /usr/X11/lib /usr/sww/X11/lib"
 	for i in $dirs ; do
@@ -5176,7 +5226,7 @@ echo "configure:5160: checking for X11 libraries" >&5
     fi
     if test "$XLIBSW" = nope ; then
 	echo $ac_n "checking for XCreateWindow in -lXwindow""... $ac_c" 1>&6
-echo "configure:5180: checking for XCreateWindow in -lXwindow" >&5
+echo "configure:5230: checking for XCreateWindow in -lXwindow" >&5
 ac_lib_var=`echo Xwindow'_'XCreateWindow | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5184,7 +5234,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lXwindow  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5188 "configure"
+#line 5238 "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
@@ -5195,7 +5245,7 @@ int main() {
 XCreateWindow()
 ; return 0; }
 EOF
-if { (eval echo configure:5199: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5249: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -5272,7 +5322,7 @@ eval "LD_SEARCH_FLAGS=\"$TCL_LD_SEARCH_FLAGS\""
 
 if test $tk_aqua = no; then
     echo $ac_n "checking for main in -lXbsd""... $ac_c" 1>&6
-echo "configure:5276: checking for main in -lXbsd" >&5
+echo "configure:5326: checking for main in -lXbsd" >&5
 ac_lib_var=`echo Xbsd'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5280,14 +5330,14 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lXbsd  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5284 "configure"
+#line 5334 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:5291: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5341: \"$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
@@ -5311,12 +5361,12 @@ fi
 
 tk_checkBoth=0
 echo $ac_n "checking for connect""... $ac_c" 1>&6
-echo "configure:5315: checking for connect" >&5
+echo "configure:5365: checking for connect" >&5
 if eval "test \"`echo '$''{'ac_cv_func_connect'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5320 "configure"
+#line 5370 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char connect(); below.  */
@@ -5339,7 +5389,7 @@ connect();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5343: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5393: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_connect=yes"
 else
@@ -5361,7 +5411,7 @@ fi
 
 if test "$tk_checkSocket" = 1; then
     echo $ac_n "checking for main in -lsocket""... $ac_c" 1>&6
-echo "configure:5365: checking for main in -lsocket" >&5
+echo "configure:5415: checking for main in -lsocket" >&5
 ac_lib_var=`echo socket'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5369,14 +5419,14 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lsocket  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5373 "configure"
+#line 5423 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; 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:5430: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -5402,12 +5452,12 @@ if test "$tk_checkBoth" = 1; then
     tk_oldLibs=$LIBS
     LIBS="$LIBS -lsocket -lnsl"
     echo $ac_n "checking for accept""... $ac_c" 1>&6
-echo "configure:5406: checking for accept" >&5
+echo "configure:5456: checking for accept" >&5
 if eval "test \"`echo '$''{'ac_cv_func_accept'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5411 "configure"
+#line 5461 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char accept(); below.  */
@@ -5430,7 +5480,7 @@ accept();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5434: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5484: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_accept=yes"
 else
@@ -5452,12 +5502,12 @@ fi
 
 fi
 echo $ac_n "checking for gethostbyname""... $ac_c" 1>&6
-echo "configure:5456: checking for gethostbyname" >&5
+echo "configure:5506: checking for gethostbyname" >&5
 if eval "test \"`echo '$''{'ac_cv_func_gethostbyname'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 5461 "configure"
+#line 5511 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char gethostbyname(); below.  */
@@ -5480,7 +5530,7 @@ gethostbyname();
 
 ; return 0; }
 EOF
-if { (eval echo configure:5484: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5534: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_gethostbyname=yes"
 else
@@ -5498,7 +5548,7 @@ if eval "test \"`echo '$ac_cv_func_'gethostbyname`\" = yes"; then
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for main in -lnsl""... $ac_c" 1>&6
-echo "configure:5502: checking for main in -lnsl" >&5
+echo "configure:5552: checking for main in -lnsl" >&5
 ac_lib_var=`echo nsl'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5506,14 +5556,14 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lnsl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5510 "configure"
+#line 5560 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:5517: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5567: \"$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
@@ -5549,13 +5599,13 @@ fi
 
 if test -d /usr/include/mit -a $tk_aqua = no; then
     echo $ac_n "checking MIT X libraries""... $ac_c" 1>&6
-echo "configure:5553: checking MIT X libraries" >&5
+echo "configure:5603: checking MIT X libraries" >&5
     tk_oldCFlags=$CFLAGS
     CFLAGS="$CFLAGS -I/usr/include/mit"
     tk_oldLibs=$LIBS
     LIBS="$LIBS -lX11-mit"
     cat > conftest.$ac_ext <<EOF
-#line 5559 "configure"
+#line 5609 "configure"
 #include "confdefs.h"
 
 	#include <X11/Xlib.h>
@@ -5566,7 +5616,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:5570: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:5620: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   
 	echo "$ac_t""yes" 1>&6
@@ -5590,14 +5640,14 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking whether char is unsigned""... $ac_c" 1>&6
-echo "configure:5594: checking whether char is unsigned" >&5
+echo "configure:5644: checking whether char is unsigned" >&5
 if eval "test \"`echo '$''{'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.$ac_ext <<EOF
-#line 5601 "configure"
+#line 5651 "configure"
 #include "confdefs.h"
 #ifdef __CHAR_UNSIGNED__
   yes
@@ -5619,7 +5669,7 @@ if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 5623 "configure"
+#line 5673 "configure"
 #include "confdefs.h"
 /* volatile prevents gcc2 from optimizing the test away on sparcs.  */
 #if !defined(__STDC__) || __STDC__ != 1
@@ -5629,7 +5679,7 @@ main() {
   volatile char c = 255; exit(c < 0);
 }
 EOF
-if { (eval echo configure:5633: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:5683: \"$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
@@ -5690,7 +5740,7 @@ if test "`uname -s`" = "Darwin" ; then
     
     if test "`uname -s`" = "Darwin" ; then
 	echo $ac_n "checking how to package libraries""... $ac_c" 1>&6
-echo "configure:5694: checking how to package libraries" >&5
+echo "configure:5744: checking how to package libraries" >&5
 	# Check whether --enable-framework or --disable-framework was given.
 if test "${enable_framework+set}" = set; then
   enableval="$enable_framework"
diff --git a/unix/configure.in b/unix/configure.in
index 905278b..2a7559b 100644
--- a/unix/configure.in
+++ b/unix/configure.in
@@ -3,7 +3,7 @@ dnl	This file is an input file used by the GNU "autoconf" program to
 dnl	generate the file "configure", which is run during Tk installation
 dnl	to configure the system for the local environment.
 #
-# RCS: @(#) $Id: configure.in,v 1.83.2.33 2006/07/20 06:27:35 das Exp $
+# RCS: @(#) $Id: configure.in,v 1.83.2.34 2006/08/18 07:47:26 das Exp $
 
 AC_INIT(../generic/tk.h)
 AC_PREREQ(2.13)
@@ -253,11 +253,10 @@ if test "`uname -s`" = "Darwin" ; then
 	fi
     fi
     AC_MSG_RESULT([$tk_aqua])
-    if test $do64bit_ok = no ; then
-	# remove -arch ppc64 from CFLAGS for fat builds as neither Aqua nor X11
-	# can be built for 64bit at present (no 64bit GUI libraries).
-	CFLAGS="`echo "$CFLAGS" | sed -e 's/-arch ppc64/-arch ppc/g'`"
-    fi
+    # remove 64-bit arch flags from CFLAGS for combined 32-bit and 64-bit fat
+    # builds, as neither TkAqua nor TkX11 can be built for 64-bit at present.
+    test "$fat_32_64" = yes && \
+	CFLAGS="`echo "$CFLAGS " | sed -e 's/-arch ppc64 / /g' -e 's/-arch x86_64 / /g'`"
 else
     tk_aqua=no
 fi
diff --git a/unix/tcl.m4 b/unix/tcl.m4
index 6db9b10..0dccb7c 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -1549,7 +1549,20 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    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";;
+		    *)
+			AC_MSG_WARN([Don't know how enable 64-bit on architecture `arch`])
+			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} ${LDFLAGS}'
 	    AC_CACHE_CHECK([if ld accepts -single_module flag], tcl_cv_ld_single_module, [
@@ -1565,8 +1578,8 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    DL_OBJS="tclLoadDyld.o"
 	    DL_LIBS=""
 	    # Don't use -prebind when building for Mac OS X 10.4 or later only:
-	    test -z "${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"
 	    AC_CACHE_CHECK([if ld accepts -search_paths_first flag], tcl_cv_ld_search_paths_first, [
@@ -1589,11 +1602,11 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    if test $tcl_corefoundation = yes; then
 		AC_CACHE_CHECK([for CoreFoundation.framework], tcl_cv_lib_corefoundation, [
 		    hold_libs=$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="$LIBS -framework CoreFoundation"
 		    AC_TRY_LINK([#include <CoreFoundation/CoreFoundation.h>], 
@@ -1606,6 +1619,18 @@ dnl AC_CHECK_TOOL(AR, ar)
 		else
 		    tcl_corefoundation=no
 		fi
+		if test "$fat_32_64" = yes -a $tcl_corefoundation = yes; then
+		    AC_CACHE_CHECK([for 64-bit CoreFoundation], tcl_cv_lib_corefoundation_64, [
+			hold_cflags=$CFLAGS
+			CFLAGS="`echo "$CFLAGS " | sed -e 's/-arch ppc / /g' -e 's/-arch i386 / /g'`"
+			AC_TRY_LINK([#include <CoreFoundation/CoreFoundation.h>], 
+			    [CFBundleRef b = CFBundleGetMainBundle();], 
+			    tcl_cv_lib_corefoundation_64=yes, tcl_cv_lib_corefoundation_64=no)
+			CFLAGS=$hold_cflags])
+		    if test $tcl_cv_lib_corefoundation_64 = no; then
+			AC_DEFINE(NO_COREFOUNDATION_64)
+		    fi
+		fi
 	    fi
 	    AC_DEFINE(MAC_OSX_TCL)
 	    ;;