* unix/README: doc'ed --enable-symbols options.

	* unix/Makefile.in: comment docs
	* unix/configure: regen
	* unix/tcl.m4: replaced SC_ENABLE_MEMDEBUG with a more intelligent
	SC_ENABLE_SYMBOLS that takes yes|no|mem|all as options now.

4 files changed, 146 insertions, 110 deletions

diff --git a/unix/Makefile.in b/unix/Makefile.in
index b15c573..15781f4 100644
--- a/unix/Makefile.in
+++ b/unix/Makefile.in
@@ -5,7 +5,7 @@
 # "autoconf" program (constructs like "@foo@" will get replaced in the
 # actual Makefile.
 #
-# RCS: @(#) $Id: Makefile.in,v 1.84 2002/09/27 00:47:26 hobbs Exp $
+# RCS: @(#) $Id: Makefile.in,v 1.85 2002/10/10 05:01:23 hobbs Exp $
 
 # Current Tk version;  used in various names.
 
@@ -144,9 +144,10 @@ PROTO_FLAGS		=
 #PROTO_FLAGS		= -DNO_PROTOTYPE
 
 # To enable memory debugging reverse the comment characters on the following
-# lines.  Warning:  if you enable memory debugging, you must do it
-# *everywhere*, including all the code that calls Tcl, and you must use
-# ckalloc and ckfree everywhere instead of malloc and free.
+# lines. or call configure with --enable-symbols=mem
+# Warning:  if you enable memory debugging, you must do it *everywhere*,
+# including all the code that calls Tcl, and you must use ckalloc and
+# ckfree everywhere instead of malloc and free.
 MEM_DEBUG_FLAGS		=
 #MEM_DEBUG_FLAGS	= -DTCL_MEM_DEBUG
 
diff --git a/unix/README b/unix/README
index 16ee435..dfa112d 100644
--- a/unix/README
+++ b/unix/README
@@ -20,7 +20,7 @@ SGI, as well as PCs running Linux, BSDI, and SCO UNIX.  To compile for
 a PC running Windows, see the README file in the directory ../win.  To
 compile for a Macintosh, see the README file in the directory ../mac.
 
-RCS: @(#) $Id: README,v 1.17 2002/09/27 18:09:53 dgp Exp $
+RCS: @(#) $Id: README,v 1.18 2002/10/10 05:01:23 hobbs Exp $
 
 How To Compile And Install Tk:
 ------------------------------
@@ -58,7 +58,10 @@ How To Compile And Install Tk:
 				how to build shared libraries.
 	--disable-shared	If this switch is specified, Tk will compile
 				itself as a static library.
-	--enable-symbols	build with debugging symbols
+	--enable-symbols	build with debugging symbols  By default
+				standard debugging symbols are used.  You
+				can specify the value "mem" to include
+				TCL_MEM_DEBUG memory debugging.
 	--disable-symbols	build without debugging symbols
 	--enable-64bit		enable 64bit support (where applicable)
 	--disable-64bit		disable 64bit support (where applicable)
diff --git a/unix/configure b/unix/configure
index 4f9064b..713b11c 100755
--- a/unix/configure
+++ b/unix/configure
@@ -3322,20 +3322,37 @@ else
 fi
 
 # FIXME: Currently, LDFLAGS_DEFAULT is not used, it should work like CFLAGS_DEFAULT.
-    if test "$tcl_ok" = "yes"; then
-	CFLAGS_DEFAULT='$(CFLAGS_DEBUG)'
-	LDFLAGS_DEFAULT='$(LDFLAGS_DEBUG)'
-	DBGX=g
-	echo "$ac_t""yes" 1>&6
-    else
+    if test "$tcl_ok" = "no"; then
 	CFLAGS_DEFAULT='$(CFLAGS_OPTIMIZE)'
 	LDFLAGS_DEFAULT='$(LDFLAGS_OPTIMIZE)'
 	DBGX=""
 	echo "$ac_t""no" 1>&6
+    else
+	CFLAGS_DEFAULT='$(CFLAGS_DEBUG)'
+	LDFLAGS_DEFAULT='$(LDFLAGS_DEBUG)'
+	DBGX=g
+	if test "$tcl_ok" = "yes"; then
+	    echo "$ac_t""yes (standard debugging)" 1>&6
+	fi
     fi
     
     
 
+    if test "$tcl_ok" = "mem" -o "$tcl_ok" = "all"; then
+	cat >> confdefs.h <<\EOF
+#define TCL_MEM_DEBUG 1
+EOF
+
+    fi
+
+    if test "$tcl_ok" != "yes" -a "$tcl_ok" != "no"; then
+	if test "$tcl_ok" = "all"; then
+	    echo "$ac_t""enabled symbols mem debugging" 1>&6
+	else
+	    echo "$ac_t""enabled $tcl_ok debugging" 1>&6
+	fi
+    fi
+
 
 LIB_RUNTIME_DIR='${LIB_RUNTIME_DIR}'
 
@@ -3358,12 +3375,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for sin""... $ac_c" 1>&6
-echo "configure:3362: checking for sin" >&5
+echo "configure:3379: checking for sin" >&5
 if eval "test \"`echo '$''{'ac_cv_func_sin'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3367 "configure"
+#line 3384 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char sin(); below.  */
@@ -3386,7 +3403,7 @@ sin();
 
 ; return 0; }
 EOF
-if { (eval echo configure:3390: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3407: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_sin=yes"
 else
@@ -3407,7 +3424,7 @@ MATH_LIBS="-lm"
 fi
 
 echo $ac_n "checking for main in -lieee""... $ac_c" 1>&6
-echo "configure:3411: checking for main in -lieee" >&5
+echo "configure:3428: checking for main in -lieee" >&5
 ac_lib_var=`echo ieee'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -3415,14 +3432,14 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lieee  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 3419 "configure"
+#line 3436 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:3426: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3443: \"$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
@@ -3453,7 +3470,7 @@ fi
 libbsd=no
 if test "`uname -s`" = "AIX" ; then
     echo $ac_n "checking for gettimeofday in -lbsd""... $ac_c" 1>&6
-echo "configure:3457: checking for gettimeofday in -lbsd" >&5
+echo "configure:3474: checking for gettimeofday in -lbsd" >&5
 ac_lib_var=`echo bsd'_'gettimeofday | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -3461,7 +3478,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lbsd  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 3465 "configure"
+#line 3482 "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
@@ -3472,7 +3489,7 @@ int main() {
 gettimeofday()
 ; return 0; }
 EOF
-if { (eval echo configure:3476: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3493: \"$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
@@ -3503,9 +3520,9 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking stdlib.h""... $ac_c" 1>&6
-echo "configure:3507: checking stdlib.h" >&5
+echo "configure:3524: checking stdlib.h" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3509 "configure"
+#line 3526 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -3520,7 +3537,7 @@ fi
 rm -f conftest*
 
 cat > conftest.$ac_ext <<EOF
-#line 3524 "configure"
+#line 3541 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -3534,7 +3551,7 @@ fi
 rm -f conftest*
 
 cat > conftest.$ac_ext <<EOF
-#line 3538 "configure"
+#line 3555 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -3566,16 +3583,16 @@ echo "$ac_t""$tk_ok" 1>&6
 #--------------------------------------------------------------------
 
 echo $ac_n "checking fd_set and sys/select""... $ac_c" 1>&6
-echo "configure:3570: checking fd_set and sys/select" >&5
+echo "configure:3587: checking fd_set and sys/select" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3572 "configure"
+#line 3589 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 int main() {
 fd_set readMask, writeMask;
 ; return 0; }
 EOF
-if { (eval echo configure:3579: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3596: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tk_ok=yes
 else
@@ -3587,7 +3604,7 @@ fi
 rm -f conftest*
 if test $tk_ok = no; then
     cat > conftest.$ac_ext <<EOF
-#line 3591 "configure"
+#line 3608 "configure"
 #include "confdefs.h"
 #include <sys/select.h>
 EOF
@@ -3619,12 +3636,12 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for ANSI C header files""... $ac_c" 1>&6
-echo "configure:3623: checking for ANSI C header files" >&5
+echo "configure:3640: checking for ANSI C header files" >&5
 if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3628 "configure"
+#line 3645 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <stdarg.h>
@@ -3632,7 +3649,7 @@ else
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:3636: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:3653: \"$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*
@@ -3649,7 +3666,7 @@ 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 3653 "configure"
+#line 3670 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -3667,7 +3684,7 @@ 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 3671 "configure"
+#line 3688 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -3688,7 +3705,7 @@ if test "$cross_compiling" = yes; then
   :
 else
   cat > conftest.$ac_ext <<EOF
-#line 3692 "configure"
+#line 3709 "configure"
 #include "confdefs.h"
 #include <ctype.h>
 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
@@ -3699,7 +3716,7 @@ if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
 exit (0); }
 
 EOF
-if { (eval echo configure:3703: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:3720: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -3723,12 +3740,12 @@ EOF
 fi
 
 echo $ac_n "checking for mode_t""... $ac_c" 1>&6
-echo "configure:3727: checking for mode_t" >&5
+echo "configure:3744: checking for mode_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_mode_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3732 "configure"
+#line 3749 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -3756,12 +3773,12 @@ EOF
 fi
 
 echo $ac_n "checking for pid_t""... $ac_c" 1>&6
-echo "configure:3760: checking for pid_t" >&5
+echo "configure:3777: checking for pid_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_pid_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3765 "configure"
+#line 3782 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -3789,12 +3806,12 @@ EOF
 fi
 
 echo $ac_n "checking for size_t""... $ac_c" 1>&6
-echo "configure:3793: checking for size_t" >&5
+echo "configure:3810: checking for size_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_size_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3798 "configure"
+#line 3815 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -3822,12 +3839,12 @@ EOF
 fi
 
 echo $ac_n "checking for uid_t in sys/types.h""... $ac_c" 1>&6
-echo "configure:3826: checking for uid_t in sys/types.h" >&5
+echo "configure:3843: checking for uid_t in sys/types.h" >&5
 if eval "test \"`echo '$''{'ac_cv_type_uid_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3831 "configure"
+#line 3848 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 EOF
@@ -3864,17 +3881,17 @@ 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:3868: checking for $ac_hdr" >&5
+echo "configure:3885: 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 3873 "configure"
+#line 3890 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:3878: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:3895: \"$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*
@@ -3901,12 +3918,12 @@ fi
 done
 
 echo $ac_n "checking whether time.h and sys/time.h may both be included""... $ac_c" 1>&6
-echo "configure:3905: checking whether time.h and sys/time.h may both be included" >&5
+echo "configure:3922: checking whether time.h and sys/time.h may both be included" >&5
 if eval "test \"`echo '$''{'ac_cv_header_time'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3910 "configure"
+#line 3927 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/time.h>
@@ -3915,7 +3932,7 @@ int main() {
 struct tm *tp;
 ; return 0; }
 EOF
-if { (eval echo configure:3919: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3936: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_header_time=yes
 else
@@ -3941,16 +3958,16 @@ fi
 #-------------------------------------------
 
 echo $ac_n "checking pw_gecos in struct pwd""... $ac_c" 1>&6
-echo "configure:3945: checking pw_gecos in struct pwd" >&5
+echo "configure:3962: checking pw_gecos in struct pwd" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3947 "configure"
+#line 3964 "configure"
 #include "confdefs.h"
 #include <pwd.h>
 int main() {
 struct passwd pwd; pwd.pw_gecos;
 ; return 0; }
 EOF
-if { (eval echo configure:3954: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3971: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   tk_ok=yes
 else
@@ -3983,7 +4000,7 @@ fi
 # 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:3987: checking for X" >&5
+echo "configure:4004: checking for X" >&5
 
 # Check whether --with-x or --without-x was given.
 if test "${with_x+set}" = set; then
@@ -4045,12 +4062,12 @@ if test "$ac_x_includes" = NO; then
 
   # First, try using that file with no special directory specified.
 cat > conftest.$ac_ext <<EOF
-#line 4049 "configure"
+#line 4066 "configure"
 #include "confdefs.h"
 #include <$x_direct_test_include>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:4054: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:4071: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -4119,14 +4136,14 @@ if test "$ac_x_libraries" = NO; then
   ac_save_LIBS="$LIBS"
   LIBS="-l$x_direct_test_library $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4123 "configure"
+#line 4140 "configure"
 #include "confdefs.h"
 
 int main() {
 ${x_direct_test_function}()
 ; return 0; }
 EOF
-if { (eval echo configure:4130: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4147: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   LIBS="$ac_save_LIBS"
 # We can link X programs with no special library path.
@@ -4216,12 +4233,12 @@ fi
     if test "$no_x" = ""; then
 	if test "$x_includes" = ""; then
 	    cat > conftest.$ac_ext <<EOF
-#line 4220 "configure"
+#line 4237 "configure"
 #include "confdefs.h"
 #include <X11/XIntrinsic.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:4225: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:4242: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -4241,15 +4258,15 @@ rm -f conftest*
     fi
     if test "$no_x" = "yes" -o "$not_really_there" = "yes"; then
 	echo $ac_n "checking for X11 header files""... $ac_c" 1>&6
-echo "configure:4245: checking for X11 header files" >&5
+echo "configure:4262: checking for X11 header files" >&5
 	found_xincludes="no"
 	cat > conftest.$ac_ext <<EOF
-#line 4248 "configure"
+#line 4265 "configure"
 #include "confdefs.h"
 #include <X11/Intrinsic.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:4253: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:4270: \"$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*
@@ -4285,7 +4302,7 @@ rm -f conftest*
 
     if test "$no_x" = yes; then
 	echo $ac_n "checking for X11 libraries""... $ac_c" 1>&6
-echo "configure:4289: checking for X11 libraries" >&5
+echo "configure:4306: 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 $dirs ; do
@@ -4305,7 +4322,7 @@ echo "configure:4289: checking for X11 libraries" >&5
     fi
     if test "$XLIBSW" = nope ; then
 	echo $ac_n "checking for XCreateWindow in -lXwindow""... $ac_c" 1>&6
-echo "configure:4309: checking for XCreateWindow in -lXwindow" >&5
+echo "configure:4326: checking for XCreateWindow in -lXwindow" >&5
 ac_lib_var=`echo Xwindow'_'XCreateWindow | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -4313,7 +4330,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lXwindow  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4317 "configure"
+#line 4334 "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
@@ -4324,7 +4341,7 @@ int main() {
 XCreateWindow()
 ; return 0; }
 EOF
-if { (eval echo configure:4328: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4345: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -4398,7 +4415,7 @@ eval "LD_SEARCH_FLAGS=\"$TCL_LD_SEARCH_FLAGS\""
 #--------------------------------------------------------------------
 
 echo $ac_n "checking for main in -lXbsd""... $ac_c" 1>&6
-echo "configure:4402: checking for main in -lXbsd" >&5
+echo "configure:4419: checking for main in -lXbsd" >&5
 ac_lib_var=`echo Xbsd'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -4406,14 +4423,14 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lXbsd  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4410 "configure"
+#line 4427 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:4417: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4434: \"$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
@@ -4436,12 +4453,12 @@ fi
 
 tk_checkBoth=0
 echo $ac_n "checking for connect""... $ac_c" 1>&6
-echo "configure:4440: checking for connect" >&5
+echo "configure:4457: checking for connect" >&5
 if eval "test \"`echo '$''{'ac_cv_func_connect'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4445 "configure"
+#line 4462 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char connect(); below.  */
@@ -4464,7 +4481,7 @@ connect();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4468: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4485: \"$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
@@ -4486,7 +4503,7 @@ fi
 
 if test "$tk_checkSocket" = 1; then
     echo $ac_n "checking for main in -lsocket""... $ac_c" 1>&6
-echo "configure:4490: checking for main in -lsocket" >&5
+echo "configure:4507: checking for main in -lsocket" >&5
 ac_lib_var=`echo socket'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -4494,14 +4511,14 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lsocket  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4498 "configure"
+#line 4515 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:4505: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4522: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -4527,12 +4544,12 @@ if test "$tk_checkBoth" = 1; then
     tk_oldLibs=$LIBS
     LIBS="$LIBS -lsocket -lnsl"
     echo $ac_n "checking for accept""... $ac_c" 1>&6
-echo "configure:4531: checking for accept" >&5
+echo "configure:4548: checking for accept" >&5
 if eval "test \"`echo '$''{'ac_cv_func_accept'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4536 "configure"
+#line 4553 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char accept(); below.  */
@@ -4555,7 +4572,7 @@ accept();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4559: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4576: \"$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
@@ -4577,12 +4594,12 @@ fi
 
 fi
 echo $ac_n "checking for gethostbyname""... $ac_c" 1>&6
-echo "configure:4581: checking for gethostbyname" >&5
+echo "configure:4598: checking for gethostbyname" >&5
 if eval "test \"`echo '$''{'ac_cv_func_gethostbyname'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4586 "configure"
+#line 4603 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char gethostbyname(); below.  */
@@ -4605,7 +4622,7 @@ gethostbyname();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4609: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4626: \"$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
@@ -4623,7 +4640,7 @@ 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""... $ac_c" 1>&6
-echo "configure:4627: checking for main in -lnsl" >&5
+echo "configure:4644: checking for main in -lnsl" >&5
 ac_lib_var=`echo nsl'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -4631,14 +4648,14 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lnsl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4635 "configure"
+#line 4652 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:4642: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4659: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -4678,13 +4695,13 @@ LIBS="$LIBS$THREADS_LIBS"
 
 if test -d /usr/include/mit ; then
     echo $ac_n "checking MIT X libraries""... $ac_c" 1>&6
-echo "configure:4682: checking MIT X libraries" >&5
+echo "configure:4699: checking MIT X libraries" >&5
     tk_oldCFlags=$CFLAGS
     CFLAGS="$CFLAGS -I/usr/include/mit"
     tk_oldLibs=$LIBS
     LIBS="$LIBS -lX11-mit"
     cat > conftest.$ac_ext <<EOF
-#line 4688 "configure"
+#line 4705 "configure"
 #include "confdefs.h"
 
 	#include <X11/Xlib.h>
@@ -4695,7 +4712,7 @@ int main() {
     
 ; return 0; }
 EOF
-if { (eval echo configure:4699: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4716: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   
 	echo "$ac_t""yes" 1>&6
@@ -4722,12 +4739,12 @@ fi
 
 MATH_LIBS=""
 echo $ac_n "checking for sin""... $ac_c" 1>&6
-echo "configure:4726: checking for sin" >&5
+echo "configure:4743: checking for sin" >&5
 if eval "test \"`echo '$''{'ac_cv_func_sin'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4731 "configure"
+#line 4748 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char sin(); below.  */
@@ -4750,7 +4767,7 @@ sin();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4754: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4771: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_sin=yes"
 else
@@ -4771,7 +4788,7 @@ MATH_LIBS="-lm"
 fi
 
 echo $ac_n "checking for main in -lieee""... $ac_c" 1>&6
-echo "configure:4775: checking for main in -lieee" >&5
+echo "configure:4792: checking for main in -lieee" >&5
 ac_lib_var=`echo ieee'_'main | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -4779,14 +4796,14 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lieee  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 4783 "configure"
+#line 4800 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:4790: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4807: \"$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
@@ -4813,14 +4830,14 @@ fi
 #--------------------------------------------------------------------
 
 echo $ac_n "checking whether char is unsigned""... $ac_c" 1>&6
-echo "configure:4817: checking whether char is unsigned" >&5
+echo "configure:4834: checking whether char is unsigned" >&5
 if eval "test \"`echo '$''{'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.$ac_ext <<EOF
-#line 4824 "configure"
+#line 4841 "configure"
 #include "confdefs.h"
 #ifdef __CHAR_UNSIGNED__
   yes
@@ -4842,7 +4859,7 @@ if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 4846 "configure"
+#line 4863 "configure"
 #include "confdefs.h"
 /* volatile prevents gcc2 from optimizing the test away on sparcs.  */
 #if !defined(__STDC__) || __STDC__ != 1
@@ -4852,7 +4869,7 @@ main() {
   volatile char c = 255; exit(c < 0);
 }
 EOF
-if { (eval echo configure:4856: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:4873: \"$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
@@ -4885,12 +4902,12 @@ fi
 
 
     echo $ac_n "checking for strtod""... $ac_c" 1>&6
-echo "configure:4889: checking for strtod" >&5
+echo "configure:4906: checking for strtod" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strtod'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4894 "configure"
+#line 4911 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strtod(); below.  */
@@ -4913,7 +4930,7 @@ strtod();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4917: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4934: \"$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
@@ -4935,7 +4952,7 @@ fi
 
     if test "$tcl_strtod" = 1; then
 	echo $ac_n "checking for Solaris2.4/Tru64 strtod bugs""... $ac_c" 1>&6
-echo "configure:4939: checking for Solaris2.4/Tru64 strtod bugs" >&5
+echo "configure:4956: checking for Solaris2.4/Tru64 strtod bugs" >&5
 	if eval "test \"`echo '$''{'tcl_cv_strtod_buggy'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -4944,7 +4961,7 @@ else
   tcl_cv_strtod_buggy=0
 else
   cat > conftest.$ac_ext <<EOF
-#line 4948 "configure"
+#line 4965 "configure"
 #include "confdefs.h"
 
 		extern double strtod();
@@ -4967,7 +4984,7 @@ else
 		    exit(0);
 		}
 EOF
-if { (eval echo configure:4971: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:4988: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   tcl_cv_strtod_buggy=1
 else
diff --git a/unix/tcl.m4 b/unix/tcl.m4
index 4ad2d1a..536e42e 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -463,6 +463,7 @@ AC_DEFUN(SC_ENABLE_THREADS, [
 # SC_ENABLE_SYMBOLS --
 #
 #	Specify if debugging symbols should be used
+#	Memory (TCL_MEM_DEBUG) debugging can also be enabled.
 #
 # Arguments:
 #	none
@@ -491,19 +492,33 @@ AC_DEFUN(SC_ENABLE_SYMBOLS, [
     AC_MSG_CHECKING([for build with symbols])
     AC_ARG_ENABLE(symbols, [  --enable-symbols        build with debugging symbols [--disable-symbols]],    [tcl_ok=$enableval], [tcl_ok=no])
 # FIXME: Currently, LDFLAGS_DEFAULT is not used, it should work like CFLAGS_DEFAULT.
-    if test "$tcl_ok" = "yes"; then
-	CFLAGS_DEFAULT='$(CFLAGS_DEBUG)'
-	LDFLAGS_DEFAULT='$(LDFLAGS_DEBUG)'
-	DBGX=g
-	AC_MSG_RESULT([yes])
-    else
+    if test "$tcl_ok" = "no"; then
 	CFLAGS_DEFAULT='$(CFLAGS_OPTIMIZE)'
 	LDFLAGS_DEFAULT='$(LDFLAGS_OPTIMIZE)'
 	DBGX=""
 	AC_MSG_RESULT([no])
+    else
+	CFLAGS_DEFAULT='$(CFLAGS_DEBUG)'
+	LDFLAGS_DEFAULT='$(LDFLAGS_DEBUG)'
+	DBGX=g
+	if test "$tcl_ok" = "yes"; then
+	    AC_MSG_RESULT([yes (standard debugging)])
+	fi
     fi
     AC_SUBST(CFLAGS_DEFAULT)
     AC_SUBST(LDFLAGS_DEFAULT)
+
+    if test "$tcl_ok" = "mem" -o "$tcl_ok" = "all"; then
+	AC_DEFINE(TCL_MEM_DEBUG)
+    fi
+
+    if test "$tcl_ok" != "yes" -a "$tcl_ok" != "no"; then
+	if test "$tcl_ok" = "all"; then
+	    AC_MSG_RESULT([enabled symbols mem debugging])
+	else
+	    AC_MSG_RESULT([enabled $tcl_ok debugging])
+	fi
+    fi
 ])
 
 #------------------------------------------------------------------------