merge updates from HEAD

7 files changed, 1068 insertions, 558 deletions

diff --git a/unix/configure b/unix/configure
index 1e01fb3..12e498c 100755
--- a/unix/configure
+++ b/unix/configure
@@ -852,6 +852,7 @@ Optional Features:
   --enable-shared         build and link with shared libraries (default: on)
   --enable-64bit          enable 64bit support (default: off)
   --enable-64bit-vis      enable 64bit Sparc VIS support (default: off)
+  --disable-rpath         disable rpath support (default: on)
   --enable-corefoundation use CoreFoundation API on MacOSX (default: on)
   --enable-load           allow dynamic loading and "load" command (default:
                           on)
@@ -6414,11 +6415,11 @@ else
 fi;
     echo "$as_me:$LINENO: result: $do64bitVIS" >&5
 echo "${ECHO_T}$do64bitVIS" >&6
-
+    # Force 64bit on with VIS
     if test "$do64bitVIS" = "yes"; then
-	# Force 64bit on with VIS
-	do64bit=yes
-    fi
+  do64bit=yes
+fi
+
 
     # Step 0.c: Check if visibility support is available. Do this here so
     # that platform specific alternatives can be used below if this fails.
@@ -6484,11 +6485,28 @@ echo "$as_me:$LINENO: result: $tcl_cv_cc_visibility_hidden" >&5
 echo "${ECHO_T}$tcl_cv_cc_visibility_hidden" >&6
     if test $tcl_cv_cc_visibility_hidden = yes; then
 
+
 cat >>confdefs.h <<\_ACEOF
 #define MODULE_SCOPE extern __attribute__((__visibility__("hidden")))
 _ACEOF
 
-    fi
+
+fi
+
+
+    # Step 0.d: Disable -rpath support?
+
+    echo "$as_me:$LINENO: checking if rpath support is requested" >&5
+echo $ECHO_N "checking if rpath support is requested... $ECHO_C" >&6
+    # Check whether --enable-rpath or --disable-rpath was given.
+if test "${enable_rpath+set}" = set; then
+  enableval="$enable_rpath"
+  doRpath=$enableval
+else
+  doRpath=yes
+fi;
+    echo "$as_me:$LINENO: result: $doRpath" >&5
+echo "${ECHO_T}$doRpath" >&6
 
     # Step 1: set the variable "system" to hold the name and version number
     # for the system.
@@ -6620,11 +6638,14 @@ fi
     TCL_LIB_VERSIONS_OK=ok
     CFLAGS_DEBUG=-g
     CFLAGS_OPTIMIZE=-O
-    if test "$GCC" = "yes" ; then
+    if test "$GCC" = yes; then
+
 	CFLAGS_WARNING="-Wall -Wno-implicit-int"
-    else
-	CFLAGS_WARNING=""
-    fi
+
+else
+  CFLAGS_WARNING=""
+fi
+
     TCL_NEEDS_EXP_FILE=0
     TCL_BUILD_EXP_FILE=""
     TCL_EXP_FILE=""
@@ -6663,18 +6684,22 @@ else
 echo "${ECHO_T}no" >&6
 fi
 
-    if test "${AR}" = "" ; then
+    if test "${AR}" = ""; then
+
 	{ { echo "$as_me:$LINENO: error: Required archive tool 'ar' not found on PATH." >&5
 echo "$as_me: error: Required archive tool 'ar' not found on PATH." >&2;}
    { (exit 1); exit 1; }; }
-    fi
+
+fi
+
     STLIB_LD='${AR} cr'
     LD_LIBRARY_PATH_VAR="LD_LIBRARY_PATH"
     PLAT_OBJS=""
     PLAT_SRCS=""
     case $system in
 	AIX-*)
-	    if test "${TCL_THREADS}" = "1" -a "$GCC" != "yes" ; then
+	    if test "${TCL_THREADS}" = "1" -a "$GCC" != "yes"; then
+
 		# AIX requires the _r compiler when gcc isn't being used
 		case "${CC}" in
 		    *_r)
@@ -6686,7 +6711,9 @@ echo "$as_me: error: Required archive tool 'ar' not found on PATH." >&2;}
 		esac
 		echo "$as_me:$LINENO: result: Using $CC for compiling with threads" >&5
 echo "${ECHO_T}Using $CC for compiling with threads" >&6
-	    fi
+
+fi
+
 	    LIBS="$LIBS -lc"
 	    SHLIB_CFLAGS=""
 	    # Note: need the LIBS below, otherwise Tk won't find Tcl's
@@ -6698,47 +6725,69 @@ echo "${ECHO_T}Using $CC for compiling with threads" >&6
 	    LD_LIBRARY_PATH_VAR="LIBPATH"
 
 	    # Check to enable 64-bit flags for compiler/linker on AIX 4+
-	    if test "$do64bit" = "yes" -a "`uname -v`" -gt "3" ; then
-		if test "$GCC" = "yes" ; then
+	    if test "$do64bit" = yes -a "`uname -v`" -gt 3; then
+
+		if test "$GCC" = yes; then
+
 		    { echo "$as_me:$LINENO: WARNING: 64bit mode not supported with GCC on $system" >&5
 echo "$as_me: WARNING: 64bit mode not supported with GCC on $system" >&2;}
-		else
+
+else
+
 		    do64bit_ok=yes
 		    CFLAGS="$CFLAGS -q64"
 		    LDFLAGS_ARCH="-q64"
 		    RANLIB="${RANLIB} -X64"
 		    AR="${AR} -X64"
 		    SHLIB_LD_FLAGS="-b64"
-		fi
-	    fi
 
-	    if test "`uname -m`" = "ia64" ; then
+fi
+
+
+fi
+
+
+	    if test "`uname -m`" = ia64; then
+
 		# AIX-5 uses ELF style dynamic libraries on IA-64, but not PPC
 		SHLIB_LD="/usr/ccs/bin/ld -G -z text"
 		# AIX-5 has dl* in libc.so
 		DL_LIBS=""
-		if test "$GCC" = "yes" ; then
+		if test "$GCC" = yes; then
+
 		    CC_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
-		else
+
+else
+
 		    CC_SEARCH_FLAGS='-R${LIB_RUNTIME_DIR}'
-		fi
+
+fi
+
 		LD_SEARCH_FLAGS='-R ${LIB_RUNTIME_DIR}'
-	    else
-		if test "$GCC" = "yes" ; then
-		    SHLIB_LD='${CC} -shared'
-		else
+
+else
+
+		if test "$GCC" = yes; then
+  SHLIB_LD='${CC} -shared'
+else
+
 		    SHLIB_LD="/bin/ld -bhalt:4 -bM:SRE -bE:lib.exp -H512 -T512 -bnoentry"
-		fi
+
+fi
+
 		SHLIB_LD="${TCL_SRC_DIR}/unix/ldAix ${SHLIB_LD} ${SHLIB_LD_FLAGS}"
 		DL_LIBS="-ldl"
 		CC_SEARCH_FLAGS='-L${LIB_RUNTIME_DIR}'
 		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
 		TCL_NEEDS_EXP_FILE=1
 		TCL_EXPORT_FILE_SUFFIX='${VERSION}.exp'
-	    fi
+
+fi
+
 
 	    # AIX v<=4.1 has some different flags than 4.2+
-	    if test "$system" = "AIX-4.1" -o "`uname -v`" -lt "4" ; then
+	    if test "$system" = "AIX-4.1" -o "`uname -v`" -lt 4; then
+
 		case $LIBOBJS in
     "tclLoadAix.$ac_objext"   | \
   *" tclLoadAix.$ac_objext"   | \
@@ -6748,7 +6797,9 @@ echo "$as_me: WARNING: 64bit mode not supported with GCC on $system" >&2;}
 esac
 
 		DL_LIBS="-lld"
-	    fi
+
+fi
+
 
 	    # On AIX <=v4 systems, libbsd.a has to be linked in to support
 	    # non-blocking file IO.  This library has to be linked in after
@@ -6833,13 +6884,16 @@ else
 fi
 
 	    if test $libbsd = yes; then
+
 	    	MATH_LIBS="$MATH_LIBS -lbsd"
 
 cat >>confdefs.h <<\_ACEOF
 #define USE_DELTA_FOR_TZ 1
 _ACEOF
 
-	    fi
+
+fi
+
 	    ;;
 	BeOS*)
 	    SHLIB_CFLAGS="-fPIC"
@@ -6968,11 +7022,16 @@ _ACEOF
 
 	    LIBS="$LIBS -lxnet"               # Use the XOPEN network library
 
-	    if test "`uname -m`" = "ia64" ; then
+	    if test "`uname -m`" = ia64; then
+
 		SHLIB_SUFFIX=".so"
-	    else
+
+else
+
 		SHLIB_SUFFIX=".sl"
-	    fi
+
+fi
+
 	    echo "$as_me:$LINENO: checking for shl_load in -ldld" >&5
 echo $ECHO_N "checking for shl_load in -ldld... $ECHO_C" >&6
 if test "${ac_cv_lib_dld_shl_load+set}" = set; then
@@ -7044,6 +7103,7 @@ else
 fi
 
 	    if test "$tcl_ok" = yes; then
+
 		SHLIB_CFLAGS="+z"
 		SHLIB_LD="ld -b"
 		SHLIB_LD_LIBS='${LIBS}'
@@ -7053,27 +7113,37 @@ fi
 		CC_SEARCH_FLAGS='-Wl,+s,+b,${LIB_RUNTIME_DIR}:.'
 		LD_SEARCH_FLAGS='+s +b ${LIB_RUNTIME_DIR}:.'
 		LD_LIBRARY_PATH_VAR="SHLIB_PATH"
-	    fi
-	    if test "$GCC" = "yes" ; then
+
+fi
+
+	    if test "$GCC" = yes; then
+
 		SHLIB_LD='${CC} -shared'
 		SHLIB_LD_LIBS='${LIBS}'
 		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
-	    fi
+
+fi
+
 
 	    # Users may want PA-RISC 1.1/2.0 portable code - needs HP cc
 	    #CFLAGS="$CFLAGS +DAportable"
 
 	    # Check to enable 64-bit flags for compiler/linker
-	    if test "$do64bit" = "yes" ; then
-		if test "$GCC" = "yes" ; then
-		    hpux_arch=`${CC} -dumpmachine`
-		    case $hpux_arch in
+	    if test "$do64bit" = "yes"; then
+
+		if test "$GCC" = yes; then
+
+		    case `${CC} -dumpmachine` in
 			hppa64*)
 			    # 64-bit gcc in use.  Fix flags for GNU ld.
 			    do64bit_ok=yes
 			    SHLIB_LD='${CC} -shared'
 			    SHLIB_LD_LIBS='${LIBS}'
-			    CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+			    if test $doRpath = yes; then
+
+				CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+fi
+
 			    LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
 			    ;;
 			*)
@@ -7081,13 +7151,18 @@ fi
 echo "$as_me: WARNING: 64bit mode not supported with GCC on $system" >&2;}
 			    ;;
 		    esac
-		else
+
+else
+
 		    do64bit_ok=yes
 		    CFLAGS="$CFLAGS +DD64"
 		    LDFLAGS_ARCH="+DD64"
-		fi
-	    fi
-	    ;;
+
+fi
+
+
+fi
+ ;;
 	HP-UX-*.08.*|HP-UX-*.09.*|HP-UX-*.10.*)
 	    SHLIB_SUFFIX=".sl"
 	    echo "$as_me:$LINENO: checking for shl_load in -ldld" >&5
@@ -7161,6 +7236,7 @@ else
 fi
 
 	    if test "$tcl_ok" = yes; then
+
 		SHLIB_CFLAGS="+z"
 		SHLIB_LD="ld -b"
 		SHLIB_LD_LIBS=""
@@ -7170,8 +7246,9 @@ fi
 		CC_SEARCH_FLAGS='-Wl,+s,+b,${LIB_RUNTIME_DIR}:.'
 		LD_SEARCH_FLAGS='+s +b ${LIB_RUNTIME_DIR}:.'
 		LD_LIBRARY_PATH_VAR="SHLIB_PATH"
-	    fi
-	    ;;
+
+fi
+ ;;
 	IRIX-5.*)
 	    SHLIB_CFLAGS=""
 	    SHLIB_LD="ld -shared -rdata_shared"
@@ -7179,8 +7256,12 @@ fi
 	    SHLIB_SUFFIX=".so"
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS=""
-	    CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
-	    LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
+	    if test $doRpath = yes; then
+
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
+fi
+
 	    ;;
 	IRIX-6.*)
 	    SHLIB_CFLAGS=""
@@ -7189,12 +7270,19 @@ fi
 	    SHLIB_SUFFIX=".so"
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS=""
-	    CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
-	    LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
-	    if test "$GCC" = "yes" ; then
+	    if test $doRpath = yes; then
+
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
+fi
+
+	    if test "$GCC" = yes; then
+
 		CFLAGS="$CFLAGS -mabi=n32"
 		LDFLAGS="$LDFLAGS -mabi=n32"
-	    else
+
+else
+
 		case $system in
 		    IRIX-6.3)
 			# Use to build 6.2 compatible binaries on 6.3.
@@ -7205,7 +7293,9 @@ fi
 			;;
 		esac
 		LDFLAGS="$LDFLAGS -n32"
-	    fi
+
+fi
+
 	    ;;
 	IRIX64-6.*)
 	    SHLIB_CFLAGS=""
@@ -7214,22 +7304,34 @@ fi
 	    SHLIB_SUFFIX=".so"
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS=""
-	    CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
-	    LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
+	    if test $doRpath = yes; then
+
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
+fi
+
 
 	    # Check to enable 64-bit flags for compiler/linker
 
-	    if test "$do64bit" = "yes" ; then
-	        if test "$GCC" = "yes" ; then
+	    if test "$do64bit" = yes; then
+
+	        if test "$GCC" = yes; then
+
 	            { echo "$as_me:$LINENO: WARNING: 64bit mode not supported by gcc" >&5
 echo "$as_me: WARNING: 64bit mode not supported by gcc" >&2;}
-	        else
+
+else
+
 	            do64bit_ok=yes
 	            SHLIB_LD="ld -64 -shared -rdata_shared"
 	            CFLAGS="$CFLAGS -64"
 	            LDFLAGS_ARCH="-64"
-	        fi
-	    fi
+
+fi
+
+
+fi
+
 	    ;;
 	Linux*)
 	    SHLIB_CFLAGS="-fPIC"
@@ -7246,12 +7348,18 @@ echo "$as_me: WARNING: 64bit mode not supported by gcc" >&2;}
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS="-ldl"
 	    LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
-	    CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+	    if test $doRpath = yes; then
+
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+fi
+
 	    LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
-	    if test "`uname -m`" = "alpha" ; then
-		CFLAGS="$CFLAGS -mieee"
-	    fi
+	    if test "`uname -m`" = "alpha"; then
+  CFLAGS="$CFLAGS -mieee"
+fi
+
 	    if test $do64bit = yes; then
+
 		echo "$as_me:$LINENO: checking if compiler accepts -m64 flag" >&5
 echo $ECHO_N "checking if compiler accepts -m64 flag... $ECHO_C" >&6
 if test "${tcl_cv_cc_m64+set}" = set; then
@@ -7311,21 +7419,26 @@ fi
 echo "$as_me:$LINENO: result: $tcl_cv_cc_m64" >&5
 echo "${ECHO_T}$tcl_cv_cc_m64" >&6
 		if test $tcl_cv_cc_m64 = yes; then
+
 		    CFLAGS="$CFLAGS -m64"
 		    do64bit_ok=yes
-		fi
-	    fi
 
-	    # The combo of gcc + glibc has a bug related
-	    # to inlining of functions like strtod(). The
-	    # -fno-builtin flag should address this problem
-	    # but it does not work. The -fno-inline flag
-	    # is kind of overkill but it works.
-	    # Disable inlining only when one of the
+fi
+
+
+fi
+
+
+	    # The combo of gcc + glibc has a bug related to inlining of
+	    # functions like strtod(). The -fno-builtin flag should address
+	    # this problem but it does not work. The -fno-inline flag is kind
+	    # of overkill but it works. Disable inlining only when one of the
 	    # files in compat/*.c is being linked in.
-	    if test x"${USE_COMPAT}" != x ; then
-	        CFLAGS="$CFLAGS -fno-inline"
-	    fi
+
+	    if test x"${USE_COMPAT}" != x; then
+  CFLAGS="$CFLAGS -fno-inline"
+fi
+
 
 	    # XIM peeking works under XFree86.
 
@@ -7346,9 +7459,10 @@ _ACEOF
 	    LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
 	    CC_SEARCH_FLAGS=""
 	    LD_SEARCH_FLAGS=""
-	    if test "`uname -m`" = "alpha" ; then
-		CFLAGS="$CFLAGS -mieee"
-	    fi
+	    if test "`uname -m`" = "alpha"; then
+  CFLAGS="$CFLAGS -mieee"
+fi
+
 	    ;;
 	Lynx*)
 	    SHLIB_CFLAGS="-fPIC"
@@ -7359,8 +7473,12 @@ _ACEOF
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS="-mshared -ldl"
 	    LD_FLAGS="-Wl,--export-dynamic"
-	    CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
-	    LD_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+	    if test $doRpath = yes; then
+
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+fi
+
 	    ;;
 	MP-RAS-02*)
 	    SHLIB_CFLAGS="-K PIC"
@@ -7390,8 +7508,12 @@ _ACEOF
 	    SHLIB_SUFFIX=".so"
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS=""
-	    CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
-	    LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
+	    if test $doRpath = yes; then
+
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
+fi
+
 	    echo "$as_me:$LINENO: checking for ELF" >&5
 echo $ECHO_N "checking for ELF... $ECHO_C" >&6
 if test "${tcl_cv_ld_elf+set}" = set; then
@@ -7422,10 +7544,15 @@ fi
 echo "$as_me:$LINENO: result: $tcl_cv_ld_elf" >&5
 echo "${ECHO_T}$tcl_cv_ld_elf" >&6
 	    if test $tcl_cv_ld_elf = yes; then
+
 		SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.so'
-	    else
+
+else
+
 		SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.so.1.0'
-	    fi
+
+fi
+
 
 	    # Ancient FreeBSD doesn't handle version numbers with dots.
 
@@ -7439,7 +7566,11 @@ echo "${ECHO_T}$tcl_cv_ld_elf" >&6
 	    SHLIB_SUFFIX=".so"
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS=""
-	    CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+	    if test $doRpath = yes; then
+
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+fi
+
 	    LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
 	    SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.so.1.0'
 	    echo "$as_me:$LINENO: checking for ELF" >&5
@@ -7472,10 +7603,13 @@ fi
 echo "$as_me:$LINENO: result: $tcl_cv_ld_elf" >&5
 echo "${ECHO_T}$tcl_cv_ld_elf" >&6
 	    if test $tcl_cv_ld_elf = yes; then
+
 		LDFLAGS=-Wl,-export-dynamic
-	    else
-		LDFLAGS=""
-	    fi
+
+else
+  LDFLAGS=""
+fi
+
 
 	    # OpenBSD doesn't do version numbers with dots.
 	    UNSHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.a'
@@ -7491,14 +7625,21 @@ echo "${ECHO_T}$tcl_cv_ld_elf" >&6
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS=""
 	    LDFLAGS="$LDFLAGS -export-dynamic"
-	    CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+	    if test $doRpath = yes; then
+
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+fi
+
 	    LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
-	    if test "${TCL_THREADS}" = "1" ; then
+	    if test "${TCL_THREADS}" = "1"; then
+
 		# The -pthread needs to go in the CFLAGS, not LIBS
 		LIBS=`echo $LIBS | sed s/-pthread//`
 		CFLAGS="$CFLAGS -pthread"
 	    	LDFLAGS="$LDFLAGS -pthread"
-	    fi
+
+fi
+
 	    case $system in
 	    FreeBSD-3.*)
 	    	# FreeBSD-3 doesn't handle version numbers with dots.
@@ -7521,6 +7662,7 @@ echo "${ECHO_T}$tcl_cv_ld_elf" >&6
 		awk 'BEGIN {FS=" +-";ORS=" "}; {for (i=2;i<=NF;i++) \
 		if (!($i~/^(isysroot|mmacosx-version-min)/)) print "-"$i}'`"
 	    if test $do64bit = yes; then
+
 		case `arch` in
 		    ppc)
 			echo "$as_me:$LINENO: checking if compiler accepts -arch ppc64 flag" >&5
@@ -7582,9 +7724,12 @@ fi
 echo "$as_me:$LINENO: result: $tcl_cv_cc_arch_ppc64" >&5
 echo "${ECHO_T}$tcl_cv_cc_arch_ppc64" >&6
 			if test $tcl_cv_cc_arch_ppc64 = yes; then
+
 			    CFLAGS="$CFLAGS -arch ppc64 -mpowerpc64 -mcpu=G5"
 			    do64bit_ok=yes
-			fi;;
+
+fi
+;;
 		    i386)
 			echo "$as_me:$LINENO: checking if compiler accepts -arch x86_64 flag" >&5
 echo $ECHO_N "checking if compiler accepts -arch x86_64 flag... $ECHO_C" >&6
@@ -7645,19 +7790,29 @@ fi
 echo "$as_me:$LINENO: result: $tcl_cv_cc_arch_x86_64" >&5
 echo "${ECHO_T}$tcl_cv_cc_arch_x86_64" >&6
 			if test $tcl_cv_cc_arch_x86_64 = yes; then
+
 			    CFLAGS="$CFLAGS -arch x86_64"
 			    do64bit_ok=yes
-			fi;;
+
+fi
+;;
 		    *)
 			{ echo "$as_me:$LINENO: WARNING: Don't know how enable 64-bit on architecture \`arch\`" >&5
 echo "$as_me: WARNING: Don't know how enable 64-bit on architecture \`arch\`" >&2;};;
 		esac
-	    else
+
+else
+
 		# Check for combined 32-bit and 64-bit fat build
-		echo "$CFLAGS " | grep -E -q -- '-arch (ppc64|x86_64) ' && \
-		    echo "$CFLAGS " | grep -E -q -- '-arch (ppc|i386) ' && \
+		if echo "$CFLAGS " |grep -E -q -- '-arch (ppc64|x86_64) ' \
+		    && echo "$CFLAGS " |grep -E -q -- '-arch (ppc|i386) '; then
+
 		    fat_32_64=yes
-	    fi
+fi
+
+
+fi
+
 	    SHLIB_LD='${CC} -dynamiclib ${CFLAGS} ${LDFLAGS}'
 	    echo "$as_me:$LINENO: checking if ld accepts -single_module flag" >&5
 echo $ECHO_N "checking if ld accepts -single_module flag... $ECHO_C" >&6
@@ -7718,16 +7873,22 @@ fi
 echo "$as_me:$LINENO: result: $tcl_cv_ld_single_module" >&5
 echo "${ECHO_T}$tcl_cv_ld_single_module" >&6
 	    if test $tcl_cv_ld_single_module = yes; then
+
 		SHLIB_LD="${SHLIB_LD} -Wl,-single_module"
-	    fi
+
+fi
+
 	    SHLIB_LD_LIBS='${LIBS}'
 	    SHLIB_SUFFIX=".dylib"
 	    DL_OBJS="tclLoadDyld.o"
 	    DL_LIBS=""
 	    # Don't use -prebind when building for Mac OS X 10.4 or later only:
-	    test "`echo "${MACOSX_DEPLOYMENT_TARGET}" | awk -F '10\\.' '{print int($2)}'`" -lt 4 -a \
-		"`echo "${CPPFLAGS}" | awk -F '-mmacosx-version-min=10\\.' '{print int($2)}'`" -lt 4 && \
+	    if test "`echo "${MACOSX_DEPLOYMENT_TARGET}" | awk -F '10\\.' '{print int($2)}'`" -lt 4 -a \
+		"`echo "${CPPFLAGS}" | awk -F '-mmacosx-version-min=10\\.' '{print int($2)}'`" -lt 4; then
+
 		LDFLAGS="$LDFLAGS -prebind"
+fi
+
 	    LDFLAGS="$LDFLAGS -headerpad_max_install_names"
 	    echo "$as_me:$LINENO: checking if ld accepts -search_paths_first flag" >&5
 echo $ECHO_N "checking if ld accepts -search_paths_first flag... $ECHO_C" >&6
@@ -7788,8 +7949,11 @@ fi
 echo "$as_me:$LINENO: result: $tcl_cv_ld_search_paths_first" >&5
 echo "${ECHO_T}$tcl_cv_ld_search_paths_first" >&6
 	    if test $tcl_cv_ld_search_paths_first = yes; then
+
 		LDFLAGS="$LDFLAGS -Wl,-search_paths_first"
-	    fi
+
+fi
+
 	    CC_SEARCH_FLAGS=""
 	    LD_SEARCH_FLAGS=""
 	    LD_LIBRARY_PATH_VAR="DYLD_LIBRARY_PATH"
@@ -7807,6 +7971,7 @@ fi;
 	    echo "$as_me:$LINENO: result: $tcl_corefoundation" >&5
 echo "${ECHO_T}$tcl_corefoundation" >&6
 	    if test $tcl_corefoundation = yes; then
+
 		echo "$as_me:$LINENO: checking for CoreFoundation.framework" >&5
 echo $ECHO_N "checking for CoreFoundation.framework... $ECHO_C" >&6
 if test "${tcl_cv_lib_corefoundation+set}" = set; then
@@ -7814,12 +7979,17 @@ if test "${tcl_cv_lib_corefoundation+set}" = set; then
 else
 
 		    hold_libs=$LIBS
-		    if test "$fat_32_64" = yes; then for v in CFLAGS CPPFLAGS LDFLAGS; do
-			# On Tiger there is no 64-bit CF, so remove 64-bit archs
-			# from CFLAGS et al. while testing for presence of CF.
-			# 64-bit CF is disabled in tclUnixPort.h if necessary.
-			eval 'hold_'$v'="$'$v'";'$v'="`echo "$'$v' "|sed -e "s/-arch ppc64 / /g" -e "s/-arch x86_64 / /g"`"'
-		    done; fi
+		    if test "$fat_32_64" = yes; then
+
+			for v in CFLAGS CPPFLAGS LDFLAGS; do
+			    # On Tiger there is no 64-bit CF, so remove 64-bit
+			    # archs from CFLAGS et al. while testing for
+			    # presence of CF. 64-bit CF is disabled in
+			    # tclUnixPort.h if necessary.
+			    eval 'hold_'$v'="$'$v'";'$v'="`echo "$'$v' "|sed -e "s/-arch ppc64 / /g" -e "s/-arch x86_64 / /g"`"'
+			done
+fi
+
 		    LIBS="$LIBS -framework CoreFoundation"
 		    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
@@ -7867,23 +8037,32 @@ tcl_cv_lib_corefoundation=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-		    if test "$fat_32_64" = yes; then for v in CFLAGS CPPFLAGS LDFLAGS; do
-			eval $v'="$hold_'$v'"'
-		    done; fi; LIBS=$hold_libs
+		    if test "$fat_32_64" = yes; then
+
+			for v in CFLAGS CPPFLAGS LDFLAGS; do
+			    eval $v'="$hold_'$v'"'
+		        done
+fi
+
+		    LIBS=$hold_libs
 fi
 echo "$as_me:$LINENO: result: $tcl_cv_lib_corefoundation" >&5
 echo "${ECHO_T}$tcl_cv_lib_corefoundation" >&6
 		if test $tcl_cv_lib_corefoundation = yes; then
+
 		    LIBS="$LIBS -framework CoreFoundation"
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_COREFOUNDATION 1
 _ACEOF
 
-		else
-		    tcl_corefoundation=no
-		fi
+
+else
+  tcl_corefoundation=no
+fi
+
 		if test "$fat_32_64" = yes -a $tcl_corefoundation = yes; then
+
 		    echo "$as_me:$LINENO: checking for 64-bit CoreFoundation" >&5
 echo $ECHO_N "checking for 64-bit CoreFoundation... $ECHO_C" >&6
 if test "${tcl_cv_lib_corefoundation_64+set}" = set; then
@@ -7947,21 +8126,31 @@ echo "$as_me:$LINENO: result: $tcl_cv_lib_corefoundation_64" >&5
 echo "${ECHO_T}$tcl_cv_lib_corefoundation_64" >&6
 		    if test $tcl_cv_lib_corefoundation_64 = no; then
 
+
 cat >>confdefs.h <<\_ACEOF
 #define NO_COREFOUNDATION_64 1
 _ACEOF
 
                         LDFLAGS="$LDFLAGS -Wl,-no_arch_warnings"
-		    fi
-		fi
-	    fi
+
+fi
+
+
+fi
+
+
+fi
+
 	    if test "$tcl_cv_cc_visibility_hidden" != yes; then
 
+
 cat >>confdefs.h <<\_ACEOF
 #define MODULE_SCOPE __private_extern__
 _ACEOF
 
-	    fi
+
+fi
+
 
 cat >>confdefs.h <<\_ACEOF
 #define MAC_OSX_TCL 1
@@ -8001,11 +8190,14 @@ _ACEOF
 	OSF1-1.*)
 	    # OSF/1 1.3 from OSF using ELF, and derivatives, including AD2
 	    SHLIB_CFLAGS="-fPIC"
-	    if test "$SHARED_BUILD" = "1" ; then
-	        SHLIB_LD="ld -shared"
-	    else
+	    if test "$SHARED_BUILD" = 1; then
+  SHLIB_LD="ld -shared"
+else
+
 	        SHLIB_LD="ld -non_shared"
-	    fi
+
+fi
+
 	    SHLIB_LD_LIBS=""
 	    SHLIB_SUFFIX=".so"
 	    DL_OBJS="tclLoadDl.o"
@@ -8016,34 +8208,52 @@ _ACEOF
 	OSF1-V*)
 	    # Digital OSF/1
 	    SHLIB_CFLAGS=""
-	    if test "$SHARED_BUILD" = "1" ; then
+	    if test "$SHARED_BUILD" = 1; then
+
 	        SHLIB_LD='ld -shared -expect_unresolved "*"'
-	    else
+
+else
+
 	        SHLIB_LD='ld -non_shared -expect_unresolved "*"'
-	    fi
+
+fi
+
 	    SHLIB_LD_LIBS=""
 	    SHLIB_SUFFIX=".so"
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS=""
-	    CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
-	    LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
-	    if test "$GCC" = "yes" ; then
-		CFLAGS="$CFLAGS -mieee"
-            else
+	    if test $doRpath = yes; then
+
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
+fi
+
+	    if test "$GCC" = yes; then
+  CFLAGS="$CFLAGS -mieee"
+else
+
 		CFLAGS="$CFLAGS -DHAVE_TZSET -std1 -ieee"
-	    fi
+fi
+
 	    # see pthread_intro(3) for pthread support on osf1, k.furukawa
-	    if test "${TCL_THREADS}" = "1" ; then
+	    if test "${TCL_THREADS}" = 1; then
+
 		CFLAGS="$CFLAGS -DHAVE_PTHREAD_ATTR_SETSTACKSIZE"
 		CFLAGS="$CFLAGS -DTCL_THREAD_STACK_MIN=PTHREAD_STACK_MIN*64"
 		LIBS=`echo $LIBS | sed s/-lpthreads//`
-		if test "$GCC" = "yes" ; then
+		if test "$GCC" = yes; then
+
 		    LIBS="$LIBS -lpthread -lmach -lexc"
-		else
+
+else
+
 		    CFLAGS="$CFLAGS -pthread"
 		    LDFLAGS="$LDFLAGS -pthread"
-		fi
-	    fi
+
+fi
+
+
+fi
 
 	    ;;
 	QNX-6*)
@@ -8063,13 +8273,18 @@ _ACEOF
 	    # Note, dlopen is available only on SCO 3.2.5 and greater. However,
 	    # this test works, since "uname -s" was non-standard in 3.2.4 and
 	    # below.
-	    if test "$GCC" = "yes" ; then
+	    if test "$GCC" = yes; then
+
 	    	SHLIB_CFLAGS="-fPIC -melf"
 	    	LDFLAGS="$LDFLAGS -melf -Wl,-Bexport"
-	    else
+
+else
+
 	    	SHLIB_CFLAGS="-Kpic -belf"
 	    	LDFLAGS="$LDFLAGS -belf -Wl,-Bexport"
-	    fi
+
+fi
+
 	    SHLIB_LD="ld -G"
 	    SHLIB_LD_LIBS=""
 	    SHLIB_SUFFIX=".so"
@@ -8133,15 +8348,20 @@ _ACEOF
 	    SHLIB_SUFFIX=".so"
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS="-ldl"
-	    if test "$GCC" = "yes" ; then
+	    if test "$GCC" = yes; then
+
 		SHLIB_LD='${CC} -shared'
 		CC_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
 		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
-	    else
+
+else
+
 		SHLIB_LD="/usr/ccs/bin/ld -G -z text"
 		CC_SEARCH_FLAGS='-R ${LIB_RUNTIME_DIR}'
 		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
-	    fi
+
+fi
+
 	    ;;
 	SunOS-5*)
 	    # Note: If _REENTRANT isn't defined, then Solaris
@@ -8161,45 +8381,76 @@ _ACEOF
 	    SHLIB_CFLAGS="-KPIC"
 
 	    # Check to enable 64-bit flags for compiler/linker
-	    if test "$do64bit" = "yes" ; then
+	    if test "$do64bit" = yes; then
+
 		arch=`isainfo`
-		if test "$arch" = "sparcv9 sparc" ; then
-			if test "$GCC" = "yes" ; then
-			    if test "`${CC} -dumpversion | awk -F. '{print $1}'`" -lt "3" ; then
-				{ echo "$as_me:$LINENO: WARNING: 64bit mode not supported with GCC < 3.2 on $system" >&5
+		if test "$arch" = "sparcv9 sparc"; then
+
+		    if test "$GCC" = yes; then
+
+			if test "`${CC} -dumpversion | awk -F. '{print $1}'`" -lt 3; then
+
+			    { echo "$as_me:$LINENO: WARNING: 64bit mode not supported with GCC < 3.2 on $system" >&5
 echo "$as_me: WARNING: 64bit mode not supported with GCC < 3.2 on $system" >&2;}
-			    else
-				do64bit_ok=yes
-				CFLAGS="$CFLAGS -m64 -mcpu=v9"
-				LDFLAGS="$LDFLAGS -m64 -mcpu=v9"
-				SHLIB_CFLAGS="-fPIC"
-			    fi
-			else
+
+else
+
 			    do64bit_ok=yes
-			    if test "$do64bitVIS" = "yes" ; then
-				CFLAGS="$CFLAGS -xarch=v9a"
-			    	LDFLAGS_ARCH="-xarch=v9a"
-			    else
-				CFLAGS="$CFLAGS -xarch=v9"
-			    	LDFLAGS_ARCH="-xarch=v9"
-			    fi
-			    # Solaris 64 uses this as well
-			    #LD_LIBRARY_PATH_VAR="LD_LIBRARY_PATH_64"
-			fi
-		elif test "$arch" = "amd64 i386" ; then
-		    if test "$GCC" = "yes" ; then
+			    CFLAGS="$CFLAGS -m64 -mcpu=v9"
+			    LDFLAGS="$LDFLAGS -m64 -mcpu=v9"
+			    SHLIB_CFLAGS="-fPIC"
+
+fi
+
+
+else
+
+			do64bit_ok=yes
+			if test "$do64bitVIS" = yes; then
+
+			    CFLAGS="$CFLAGS -xarch=v9a"
+			    LDFLAGS_ARCH="-xarch=v9a"
+
+else
+
+			    CFLAGS="$CFLAGS -xarch=v9"
+			    LDFLAGS_ARCH="-xarch=v9"
+
+fi
+
+			# Solaris 64 uses this as well
+			#LD_LIBRARY_PATH_VAR="LD_LIBRARY_PATH_64"
+
+fi
+
+
+else
+  if test "$arch" = "amd64 i386"; then
+
+		    if test "$GCC" = yes; then
+
 			{ echo "$as_me:$LINENO: WARNING: 64bit mode not supported with GCC on $system" >&5
 echo "$as_me: WARNING: 64bit mode not supported with GCC on $system" >&2;}
-		    else
+
+else
+
 			do64bit_ok=yes
 			CFLAGS="$CFLAGS -xarch=amd64"
 			LDFLAGS="$LDFLAGS -xarch=amd64"
-		    fi
-		else
-		    { echo "$as_me:$LINENO: WARNING: 64bit mode not supported for $arch" >&5
+
+fi
+
+
+else
+  { echo "$as_me:$LINENO: WARNING: 64bit mode not supported for $arch" >&5
 echo "$as_me: WARNING: 64bit mode not supported for $arch" >&2;}
-		fi
-	    fi
+fi
+
+fi
+
+
+fi
+
 
 	    # Note: need the LIBS below, otherwise Tk won't find Tcl's
 	    # symbols when dynamically loaded into tclsh.
@@ -8208,11 +8459,13 @@ echo "$as_me: WARNING: 64bit mode not supported for $arch" >&2;}
 	    SHLIB_SUFFIX=".so"
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS="-ldl"
-	    if test "$GCC" = "yes" ; then
+	    if test "$GCC" = yes; then
+
 		SHLIB_LD='${CC} -shared'
 		CC_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
 		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
-		if test "$do64bit_ok" = "yes" ; then
+		if test "$do64bit_ok" = yes; then
+
 		    # We need to specify -static-libgcc or we need to
 		    # add the path to the sparv9 libgcc.
 		    SHLIB_LD="$SHLIB_LD -m64 -mcpu=v9 -static-libgcc"
@@ -8220,8 +8473,12 @@ echo "$as_me: WARNING: 64bit mode not supported for $arch" >&2;}
 		    # path, remove so name and append 'sparcv9'
 		    #v9gcclibdir="`gcc -print-file-name=libgcc_s.so` | ..."
 		    #CC_SEARCH_FLAGS="${CC_SEARCH_FLAGS},-R,$v9gcclibdir"
-		fi
-	    else
+
+fi
+
+
+else
+
 		case $system in
 		    SunOS-5.[1-9][0-9]*)
 			SHLIB_LD='${CC} -G -z text';;
@@ -8230,7 +8487,9 @@ echo "$as_me: WARNING: 64bit mode not supported for $arch" >&2;}
 		esac
 		CC_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
 		LD_SEARCH_FLAGS='-R ${LIB_RUNTIME_DIR}'
-	    fi
+
+fi
+
 	    ;;
 	UNIX_SV* | UnixWare-5*)
 	    SHLIB_CFLAGS="-KPIC"
@@ -8300,25 +8559,34 @@ fi
 echo "$as_me:$LINENO: result: $tcl_cv_ld_Bexport" >&5
 echo "${ECHO_T}$tcl_cv_ld_Bexport" >&6
 	    if test $tcl_cv_ld_Bexport = yes; then
+
 		LDFLAGS="$LDFLAGS -Wl,-Bexport"
-	    fi
+
+fi
+
 	    CC_SEARCH_FLAGS=""
 	    LD_SEARCH_FLAGS=""
 	    ;;
     esac
 
-    if test "$do64bit" = "yes" -a "$do64bit_ok" = "no" ; then
+    if test "$do64bit" = yes -a "$do64bit_ok" = no; then
+
 	{ echo "$as_me:$LINENO: WARNING: 64bit support being disabled -- don't know magic for this platform" >&5
 echo "$as_me: WARNING: 64bit support being disabled -- don't know magic for this platform" >&2;}
-    fi
 
-    if test "$do64bit" = "yes" -a "$do64bit_ok" = "yes" ; then
+fi
+
+
+    if test "$do64bit" = yes -a "$do64bit_ok" = yes; then
+
 
 cat >>confdefs.h <<\_ACEOF
 #define TCL_CFG_DO64BIT 1
 _ACEOF
 
-    fi
+
+fi
+
 
 
 
@@ -8331,15 +8599,17 @@ if test "${enable_load+set}" = set; then
 else
   tcl_ok=yes
 fi;
-    if test "$tcl_ok" = "no"; then
-	DL_OBJS=""
-    fi
+    if test "$tcl_ok" = no; then
+  DL_OBJS=""
+fi
 
-    if test "x$DL_OBJS" != "x" ; then
-	BUILD_DLTEST="\$(DLTEST_TARGETS)"
-    else
-	echo "Can't figure out how to do dynamic loading or shared libraries"
-	echo "on this system."
+
+    if test "x$DL_OBJS" != x; then
+  BUILD_DLTEST="\$(DLTEST_TARGETS)"
+else
+
+	{ echo "$as_me:$LINENO: WARNING: Can't figure out how to do dynamic loading or shared libraries on this system." >&5
+echo "$as_me: WARNING: Can't figure out how to do dynamic loading or shared libraries on this system." >&2;}
 	SHLIB_CFLAGS=""
 	SHLIB_LD=""
 	SHLIB_SUFFIX=""
@@ -8349,76 +8619,88 @@ fi;
 	CC_SEARCH_FLAGS=""
 	LD_SEARCH_FLAGS=""
 	BUILD_DLTEST=""
-    fi
+
+fi
+
     LDFLAGS="$LDFLAGS $LDFLAGS_ARCH"
 
     # If we're running gcc, then change the C flags for compiling shared
     # libraries to the right flags for gcc, instead of those for the
     # standard manufacturer compiler.
 
-    if test "$DL_OBJS" != "tclLoadNone.o" ; then
-	if test "$GCC" = "yes" ; then
-	    case $system in
-		AIX-*)
-		    ;;
-		BSD/OS*)
-		    ;;
-		IRIX*)
-		    ;;
-		NetBSD-*|FreeBSD-*)
-		    ;;
-		Darwin-*)
-		    ;;
-		SCO_SV-3.2*)
-		    ;;
-		*)
-		    SHLIB_CFLAGS="-fPIC"
-		    ;;
-	    esac
-	fi
-    fi
+    if test "$DL_OBJS" != "tclLoadNone.o" -a "$GCC" = yes; then
+
+	case $system in
+	    AIX-*) ;;
+	    BSD/OS*) ;;
+	    IRIX*) ;;
+	    NetBSD-*|FreeBSD-*) ;;
+	    Darwin-*) ;;
+	    SCO_SV-3.2*) ;;
+	    *) SHLIB_CFLAGS="-fPIC" ;;
+	esac
+fi
+
+
+    if test "$SHARED_LIB_SUFFIX" = ""; then
 
-    if test "$SHARED_LIB_SUFFIX" = "" ; then
 	SHARED_LIB_SUFFIX='${VERSION}${SHLIB_SUFFIX}'
-    fi
-    if test "$UNSHARED_LIB_SUFFIX" = "" ; then
+fi
+
+    if test "$UNSHARED_LIB_SUFFIX" = ""; then
+
 	UNSHARED_LIB_SUFFIX='${VERSION}.a'
-    fi
+fi
+
+
+    if test "${SHARED_BUILD}" = 1 -a "${SHLIB_SUFFIX}" != ""; then
 
-    if test "${SHARED_BUILD}" = "1" && test "${SHLIB_SUFFIX}" != "" ; then
         LIB_SUFFIX=${SHARED_LIB_SUFFIX}
         MAKE_LIB='${SHLIB_LD} -o $@ ${OBJS} ${SHLIB_LD_LIBS} ${TCL_SHLIB_LD_EXTRAS} ${TK_SHLIB_LD_EXTRAS} ${LD_SEARCH_FLAGS}'
         INSTALL_LIB='$(INSTALL_LIBRARY) $(LIB_FILE) $(LIB_INSTALL_DIR)/$(LIB_FILE)'
-    else
+
+else
+
         LIB_SUFFIX=${UNSHARED_LIB_SUFFIX}
 
-        if test "$RANLIB" = "" ; then
+        if test "$RANLIB" = ""; then
+
             MAKE_LIB='$(STLIB_LD) $@ ${OBJS}'
             INSTALL_LIB='$(INSTALL_LIBRARY) $(LIB_FILE) $(LIB_INSTALL_DIR)/$(LIB_FILE)'
-        else
+
+else
+
             MAKE_LIB='${STLIB_LD} $@ ${OBJS} ; ${RANLIB} $@'
             INSTALL_LIB='$(INSTALL_LIBRARY) $(LIB_FILE) $(LIB_INSTALL_DIR)/$(LIB_FILE) ; (cd $(LIB_INSTALL_DIR) ; $(RANLIB) $(LIB_FILE))'
-        fi
 
-    fi
+fi
+
+
+fi
 
 
     # Stub lib does not depend on shared/static configuration
-    if test "$RANLIB" = "" ; then
+    if test "$RANLIB" = ""; then
+
         MAKE_STUB_LIB='${STLIB_LD} $@ ${STUB_LIB_OBJS}'
         INSTALL_STUB_LIB='$(INSTALL_LIBRARY) $(STUB_LIB_FILE) $(LIB_INSTALL_DIR)/$(STUB_LIB_FILE)'
-    else
+
+else
+
         MAKE_STUB_LIB='${STLIB_LD} $@ ${STUB_LIB_OBJS} ; ${RANLIB} $@'
         INSTALL_STUB_LIB='$(INSTALL_LIBRARY) $(STUB_LIB_FILE) $(LIB_INSTALL_DIR)/$(STUB_LIB_FILE) ; (cd $(LIB_INSTALL_DIR) ; $(RANLIB) $(STUB_LIB_FILE))'
-    fi
+
+fi
+
 
     # Define TCL_LIBS now that we know what DL_LIBS is.
-    # The trick here is that we don't want to change
-    # the value of TCL_LIBS if it is already set when
-    # tclConfig.sh had been loaded by Tk.
-    if test "x${TCL_LIBS}" = "x"; then
+    # The trick here is that we don't want to change the value of TCL_LIBS if
+    # it is already set when tclConfig.sh had been loaded by Tk.
+    if test "x${TCL_LIBS}" = x; then
+
         TCL_LIBS="${DL_LIBS} ${LIBS} ${MATH_LIBS}"
-    fi
+fi
+
 
 
     # FIXME: This subst was left in only because the TCL_DL_LIBS
@@ -10272,6 +10554,171 @@ _ACEOF
 fi
 
 
+echo "$as_me:$LINENO: checking for getaddrinfo" >&5
+echo $ECHO_N "checking for getaddrinfo... $ECHO_C" >&6
+if test "${ac_cv_func_getaddrinfo+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define getaddrinfo to an innocuous variant, in case <limits.h> declares getaddrinfo.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define getaddrinfo innocuous_getaddrinfo
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char getaddrinfo (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef getaddrinfo
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char getaddrinfo ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_getaddrinfo) || defined (__stub___getaddrinfo)
+choke me
+#else
+char (*f) () = getaddrinfo;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != getaddrinfo;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_getaddrinfo=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_getaddrinfo=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_getaddrinfo" >&5
+echo "${ECHO_T}$ac_cv_func_getaddrinfo" >&6
+if test $ac_cv_func_getaddrinfo = yes; then
+
+    echo "$as_me:$LINENO: checking for working getaddrinfo" >&5
+echo $ECHO_N "checking for working getaddrinfo... $ECHO_C" >&6
+if test "${tcl_cv_api_getaddrinfo+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+	#include <netdb.h>
+
+int
+main ()
+{
+
+	const char *name, *port;
+	struct addrinfo *aiPtr, hints;
+	(void)getaddrinfo(name,port, &hints, &aiPtr);
+	(void)freeaddrinfo(aiPtr);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_api_getaddrinfo=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_getaddrinfo=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_api_getaddrinfo" >&5
+echo "${ECHO_T}$tcl_cv_api_getaddrinfo" >&6
+    tcl_ok=$tcl_cv_api_getaddrinfo
+    if test "$tcl_ok" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GETADDRINFO 1
+_ACEOF
+
+    fi
+
+fi
+
+
 #--------------------------------------------------------------------
 #	Look for thread-safe variants of some library functions.
 #--------------------------------------------------------------------
@@ -17900,8 +18347,8 @@ echo "${ECHO_T}$tcl_ok" >&6
 #  Does the C stack grow upwards or downwards? Or cross-compiling?
 #--------------------------------------------------------------------
 
-echo "$as_me:$LINENO: checking does the C stack grow upwards in memory?" >&5
-echo $ECHO_N "checking does the C stack grow upwards in memory?... $ECHO_C" >&6
+echo "$as_me:$LINENO: checking if the C stack grows upwards in memory" >&5
+echo $ECHO_N "checking if the C stack grows upwards in memory... $ECHO_C" >&6
 if test "${tcl_cv_stack_grows_up+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
@@ -17916,14 +18363,11 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 
-	int StackGrowsUp(int *parent)
-	{
+	int StackGrowsUp(int *parent) {
 	    int here;
 	    return (&here < parent);
 	}
-
-	int main (int argc, char *argv[])
-	{
+	int main (int argc, char *argv[]) {
 	    int foo;
 	    return StackGrowsUp(&foo);
 	}
diff --git a/unix/configure.in b/unix/configure.in
index 272e466..8f4d212 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 Tcl installation
 dnl	to configure the system for the local environment.
 #
-# RCS: @(#) $Id: configure.in,v 1.157.2.9 2007/11/12 19:18:23 dgp Exp $
+# RCS: @(#) $Id: configure.in,v 1.157.2.10 2007/11/16 07:20:57 dgp Exp $
 
 AC_INIT([tcl],[8.5])
 AC_PREREQ(2.59)
@@ -165,6 +165,8 @@ if test "`uname -s`" = "Darwin" && test "${TCL_THREADS}" = 1 && \
 fi
 AC_CHECK_FUNC(realpath, , [AC_DEFINE(NO_REALPATH, 1, [Do we have realpath()])])
 
+SC_TCL_GETADDRINFO
+
 #-------------------------------------------------------------------- 
 #	Look for thread-safe variants of some library functions.
 #--------------------------------------------------------------------
@@ -661,29 +663,22 @@ AC_MSG_RESULT([$tcl_ok])
 #  Does the C stack grow upwards or downwards? Or cross-compiling?
 #--------------------------------------------------------------------
 
-AC_CACHE_CHECK([does the C stack grow upwards in memory?], tcl_cv_stack_grows_up, [
+AC_CACHE_CHECK([if the C stack grows upwards in memory], tcl_cv_stack_grows_up, [
     AC_TRY_RUN([
-	int StackGrowsUp(int *parent)
-	{
+	int StackGrowsUp(int *parent) {
 	    int here;
 	    return (&here < parent);
 	}
-
-	int main (int argc, char *argv[])
-	{
+	int main (int argc, char *argv[]) {
 	    int foo;
 	    return StackGrowsUp(&foo);
 	}
-    ],
-    tcl_cv_stack_grows_up=yes,
-    tcl_cv_stack_grows_up=no,
+    ], tcl_cv_stack_grows_up=yes, tcl_cv_stack_grows_up=no,
     tcl_cv_stack_grows_up=unknown)])
 if test $tcl_cv_stack_grows_up = unknown; then
-    AC_DEFINE(TCL_CROSS_COMPILE, 1,
-	[Are we cross-compiling?])
+    AC_DEFINE(TCL_CROSS_COMPILE, 1, [Are we cross-compiling?])
 elif test $tcl_cv_stack_grows_up = yes; then
-    AC_DEFINE(TCL_STACK_GROWS_UP, 1,
-	[The C stack grows upwards in memory])
+    AC_DEFINE(TCL_STACK_GROWS_UP, 1, [The C stack grows upwards in memory.])
 fi
 
 #--------------------------------------------------------------------
diff --git a/unix/tcl.m4 b/unix/tcl.m4
index 73c1606..5b6f6eb 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -1080,11 +1080,8 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 	    [enable 64bit Sparc VIS support (default: off)]),
 	[do64bitVIS=$enableval], [do64bitVIS=no])
     AC_MSG_RESULT([$do64bitVIS])
-
-    if test "$do64bitVIS" = "yes"; then
-	# Force 64bit on with VIS
-	do64bit=yes
-    fi
+    # Force 64bit on with VIS
+    AS_IF([test "$do64bitVIS" = "yes"], [do64bit=yes])
 
     # Step 0.c: Check if visibility support is available. Do this here so
     # that platform specific alternatives can be used below if this fails.
@@ -1097,11 +1094,20 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
 	    void f(void) {}], [f();], tcl_cv_cc_visibility_hidden=yes,
 	    tcl_cv_cc_visibility_hidden=no)
 	CFLAGS=$hold_cflags])
-    if test $tcl_cv_cc_visibility_hidden = yes; then
+    AS_IF([test $tcl_cv_cc_visibility_hidden = yes], [
 	AC_DEFINE(MODULE_SCOPE,
 	    [extern __attribute__((__visibility__("hidden")))],
 	    [Compiler support for module scope symbols])
-    fi
+    ])
+
+    # Step 0.d: Disable -rpath support?
+
+    AC_MSG_CHECKING([if rpath support is requested])
+    AC_ARG_ENABLE(rpath,
+	AC_HELP_STRING([--disable-rpath],
+	    [disable rpath support (default: on)]),
+	[doRpath=$enableval], [doRpath=yes])
+    AC_MSG_RESULT([$doRpath])
 
     # Step 1: set the variable "system" to hold the name and version number
     # for the system.
@@ -1132,27 +1138,25 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
     TCL_LIB_VERSIONS_OK=ok
     CFLAGS_DEBUG=-g
     CFLAGS_OPTIMIZE=-O
-    if test "$GCC" = "yes" ; then
+    AS_IF([test "$GCC" = yes], [
 	CFLAGS_WARNING="-Wall -Wno-implicit-int"
-    else
-	CFLAGS_WARNING=""
-    fi
+    ], [CFLAGS_WARNING=""])
     TCL_NEEDS_EXP_FILE=0
     TCL_BUILD_EXP_FILE=""
     TCL_EXP_FILE=""
 dnl FIXME: Replace AC_CHECK_PROG with AC_CHECK_TOOL once cross compiling is fixed.
 dnl AC_CHECK_TOOL(AR, ar)
     AC_CHECK_PROG(AR, ar, ar)
-    if test "${AR}" = "" ; then
+    AS_IF([test "${AR}" = ""], [
 	AC_MSG_ERROR([Required archive tool 'ar' not found on PATH.])
-    fi
+    ])
     STLIB_LD='${AR} cr'
     LD_LIBRARY_PATH_VAR="LD_LIBRARY_PATH"
     PLAT_OBJS=""
     PLAT_SRCS=""
     case $system in
 	AIX-*)
-	    if test "${TCL_THREADS}" = "1" -a "$GCC" != "yes" ; then
+	    AS_IF([test "${TCL_THREADS}" = "1" -a "$GCC" != "yes"], [
 		# AIX requires the _r compiler when gcc isn't being used
 		case "${CC}" in
 		    *_r)
@@ -1163,7 +1167,7 @@ dnl AC_CHECK_TOOL(AR, ar)
 			;;
 		esac
 		AC_MSG_RESULT([Using $CC for compiling with threads])
-	    fi
+	    ])
 	    LIBS="$LIBS -lc"
 	    SHLIB_CFLAGS=""
 	    # Note: need the LIBS below, otherwise Tk won't find Tcl's
@@ -1175,49 +1179,47 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    LD_LIBRARY_PATH_VAR="LIBPATH"
 
 	    # Check to enable 64-bit flags for compiler/linker on AIX 4+
-	    if test "$do64bit" = "yes" -a "`uname -v`" -gt "3" ; then
-		if test "$GCC" = "yes" ; then
+	    AS_IF([test "$do64bit" = yes -a "`uname -v`" -gt 3], [
+		AS_IF([test "$GCC" = yes], [
 		    AC_MSG_WARN([64bit mode not supported with GCC on $system])
-		else 
+		], [
 		    do64bit_ok=yes
 		    CFLAGS="$CFLAGS -q64"
 		    LDFLAGS_ARCH="-q64"
 		    RANLIB="${RANLIB} -X64"
 		    AR="${AR} -X64"
 		    SHLIB_LD_FLAGS="-b64"
-		fi
-	    fi
+		])
+	    ])
 
-	    if test "`uname -m`" = "ia64" ; then
+	    AS_IF([test "`uname -m`" = ia64], [
 		# AIX-5 uses ELF style dynamic libraries on IA-64, but not PPC
 		SHLIB_LD="/usr/ccs/bin/ld -G -z text"
 		# AIX-5 has dl* in libc.so
 		DL_LIBS=""
-		if test "$GCC" = "yes" ; then
+		AS_IF([test "$GCC" = yes], [
 		    CC_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
-		else
+		], [
 		    CC_SEARCH_FLAGS='-R${LIB_RUNTIME_DIR}'
-		fi
+		])
 		LD_SEARCH_FLAGS='-R ${LIB_RUNTIME_DIR}'
-	    else
-		if test "$GCC" = "yes" ; then
-		    SHLIB_LD='${CC} -shared'
-		else
+	    ], [
+		AS_IF([test "$GCC" = yes], [SHLIB_LD='${CC} -shared'], [
 		    SHLIB_LD="/bin/ld -bhalt:4 -bM:SRE -bE:lib.exp -H512 -T512 -bnoentry"
-		fi
+		])
 		SHLIB_LD="${TCL_SRC_DIR}/unix/ldAix ${SHLIB_LD} ${SHLIB_LD_FLAGS}"
 		DL_LIBS="-ldl"
 		CC_SEARCH_FLAGS='-L${LIB_RUNTIME_DIR}'
 		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
 		TCL_NEEDS_EXP_FILE=1
 		TCL_EXPORT_FILE_SUFFIX='${VERSION}.exp'
-	    fi
+	    ])
 
 	    # AIX v<=4.1 has some different flags than 4.2+
-	    if test "$system" = "AIX-4.1" -o "`uname -v`" -lt "4" ; then
+	    AS_IF([test "$system" = "AIX-4.1" -o "`uname -v`" -lt 4], [
 		AC_LIBOBJ([tclLoadAix])
 		DL_LIBS="-lld"
-	    fi
+	    ])
 
 	    # On AIX <=v4 systems, libbsd.a has to be linked in to support
 	    # non-blocking file IO.  This library has to be linked in after
@@ -1232,10 +1234,10 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    # known GMT value.
 
 	    AC_CHECK_LIB(bsd, gettimeofday, libbsd=yes, libbsd=no)
-	    if test $libbsd = yes; then
+	    AS_IF([test $libbsd = yes], [
 	    	MATH_LIBS="$MATH_LIBS -lbsd"
 	    	AC_DEFINE(USE_DELTA_FOR_TZ, 1, [Do we need a special AIX hack for timezones?])
-	    fi
+	    ])
 	    ;;
 	BeOS*)
 	    SHLIB_CFLAGS="-fPIC"
@@ -1289,13 +1291,13 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    AC_DEFINE(_XOPEN_SOURCE_EXTENDED, 1, [Do we want to use the XOPEN network library?])
 	    LIBS="$LIBS -lxnet"               # Use the XOPEN network library
 
-	    if test "`uname -m`" = "ia64" ; then
+	    AS_IF([test "`uname -m`" = ia64], [
 		SHLIB_SUFFIX=".so"
-	    else
+	    ], [
 		SHLIB_SUFFIX=".sl"
-	    fi
+	    ])
 	    AC_CHECK_LIB(dld, shl_load, tcl_ok=yes, tcl_ok=no)
-	    if test "$tcl_ok" = yes; then
+	    AS_IF([test "$tcl_ok" = yes], [
 		SHLIB_CFLAGS="+z"
 		SHLIB_LD="ld -b"
 		SHLIB_LD_LIBS='${LIBS}'
@@ -1305,44 +1307,43 @@ dnl AC_CHECK_TOOL(AR, ar)
 		CC_SEARCH_FLAGS='-Wl,+s,+b,${LIB_RUNTIME_DIR}:.'
 		LD_SEARCH_FLAGS='+s +b ${LIB_RUNTIME_DIR}:.'
 		LD_LIBRARY_PATH_VAR="SHLIB_PATH"
-	    fi
-	    if test "$GCC" = "yes" ; then
+	    ])
+	    AS_IF([test "$GCC" = yes], [
 		SHLIB_LD='${CC} -shared'
 		SHLIB_LD_LIBS='${LIBS}'
 		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
-	    fi
+	    ])
 
 	    # Users may want PA-RISC 1.1/2.0 portable code - needs HP cc
 	    #CFLAGS="$CFLAGS +DAportable"
 
 	    # Check to enable 64-bit flags for compiler/linker
-	    if test "$do64bit" = "yes" ; then
-		if test "$GCC" = "yes" ; then
-		    hpux_arch=`${CC} -dumpmachine`
-		    case $hpux_arch in
+	    AS_IF([test "$do64bit" = "yes"], [
+		AS_IF([test "$GCC" = yes], [
+		    case `${CC} -dumpmachine` in
 			hppa64*)
 			    # 64-bit gcc in use.  Fix flags for GNU ld.
 			    do64bit_ok=yes
 			    SHLIB_LD='${CC} -shared'
 			    SHLIB_LD_LIBS='${LIBS}'
-			    CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+			    AS_IF([test $doRpath = yes], [
+				CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'])
 			    LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
 			    ;;
 			*)
 			    AC_MSG_WARN([64bit mode not supported with GCC on $system])
 			    ;;
 		    esac
-		else
+		], [
 		    do64bit_ok=yes
 		    CFLAGS="$CFLAGS +DD64"
 		    LDFLAGS_ARCH="+DD64"
-		fi
-	    fi
-	    ;;
+		])
+	    ]) ;;
 	HP-UX-*.08.*|HP-UX-*.09.*|HP-UX-*.10.*)
 	    SHLIB_SUFFIX=".sl"
 	    AC_CHECK_LIB(dld, shl_load, tcl_ok=yes, tcl_ok=no)
-	    if test "$tcl_ok" = yes; then
+	    AS_IF([test "$tcl_ok" = yes], [
 		SHLIB_CFLAGS="+z"
 		SHLIB_LD="ld -b"
 		SHLIB_LD_LIBS=""
@@ -1352,8 +1353,7 @@ dnl AC_CHECK_TOOL(AR, ar)
 		CC_SEARCH_FLAGS='-Wl,+s,+b,${LIB_RUNTIME_DIR}:.'
 		LD_SEARCH_FLAGS='+s +b ${LIB_RUNTIME_DIR}:.'
 		LD_LIBRARY_PATH_VAR="SHLIB_PATH"
-	    fi
-	    ;;
+	    ]) ;;
 	IRIX-5.*)
 	    SHLIB_CFLAGS=""
 	    SHLIB_LD="ld -shared -rdata_shared"
@@ -1361,8 +1361,9 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    SHLIB_SUFFIX=".so"
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS=""
-	    CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
-	    LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
+	    AS_IF([test $doRpath = yes], [
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'])
 	    ;;
 	IRIX-6.*)
 	    SHLIB_CFLAGS=""
@@ -1371,12 +1372,13 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    SHLIB_SUFFIX=".so"
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS=""
-	    CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
-	    LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
-	    if test "$GCC" = "yes" ; then
+	    AS_IF([test $doRpath = yes], [
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'])
+	    AS_IF([test "$GCC" = yes], [
 		CFLAGS="$CFLAGS -mabi=n32"
 		LDFLAGS="$LDFLAGS -mabi=n32"
-	    else
+	    ], [
 		case $system in
 		    IRIX-6.3)
 			# Use to build 6.2 compatible binaries on 6.3.
@@ -1387,7 +1389,7 @@ dnl AC_CHECK_TOOL(AR, ar)
 			;;
 		esac
 		LDFLAGS="$LDFLAGS -n32"
-	    fi
+	    ])
 	    ;;
 	IRIX64-6.*)
 	    SHLIB_CFLAGS=""
@@ -1396,21 +1398,22 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    SHLIB_SUFFIX=".so"
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS=""
-	    CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
-	    LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
+	    AS_IF([test $doRpath = yes], [
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'])
 
 	    # Check to enable 64-bit flags for compiler/linker
 
-	    if test "$do64bit" = "yes" ; then
-	        if test "$GCC" = "yes" ; then
+	    AS_IF([test "$do64bit" = yes], [
+	        AS_IF([test "$GCC" = yes], [
 	            AC_MSG_WARN([64bit mode not supported by gcc])
-	        else
+	        ], [
 	            do64bit_ok=yes
 	            SHLIB_LD="ld -64 -shared -rdata_shared"
 	            CFLAGS="$CFLAGS -64"
 	            LDFLAGS_ARCH="-64"
-	        fi
-	    fi
+	        ])
+	    ])
 	    ;;
 	Linux*)
 	    SHLIB_CFLAGS="-fPIC"
@@ -1427,33 +1430,29 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS="-ldl"
 	    LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
-	    CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+	    AS_IF([test $doRpath = yes], [
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'])
 	    LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
-	    if test "`uname -m`" = "alpha" ; then
-		CFLAGS="$CFLAGS -mieee"
-	    fi
-	    if test $do64bit = yes; then
+	    AS_IF([test "`uname -m`" = "alpha"], [CFLAGS="$CFLAGS -mieee"])
+	    AS_IF([test $do64bit = yes], [
 		AC_CACHE_CHECK([if compiler accepts -m64 flag], tcl_cv_cc_m64, [
 		    hold_cflags=$CFLAGS
 		    CFLAGS="$CFLAGS -m64"
 		    AC_TRY_LINK(,, tcl_cv_cc_m64=yes, tcl_cv_cc_m64=no)
 		    CFLAGS=$hold_cflags])
-		if test $tcl_cv_cc_m64 = yes; then
+		AS_IF([test $tcl_cv_cc_m64 = yes], [
 		    CFLAGS="$CFLAGS -m64"
 		    do64bit_ok=yes
-		fi
-	    fi
+		])
+	   ])
 
-	    # The combo of gcc + glibc has a bug related
-	    # to inlining of functions like strtod(). The
-	    # -fno-builtin flag should address this problem
-	    # but it does not work. The -fno-inline flag
-	    # is kind of overkill but it works.
-	    # Disable inlining only when one of the
+	    # The combo of gcc + glibc has a bug related to inlining of
+	    # functions like strtod(). The -fno-builtin flag should address
+	    # this problem but it does not work. The -fno-inline flag is kind
+	    # of overkill but it works. Disable inlining only when one of the
 	    # files in compat/*.c is being linked in.
-	    if test x"${USE_COMPAT}" != x ; then
-	        CFLAGS="$CFLAGS -fno-inline"
-	    fi
+
+	    AS_IF([test x"${USE_COMPAT}" != x],[CFLAGS="$CFLAGS -fno-inline"])
 
 	    # XIM peeking works under XFree86.
 	    AC_DEFINE(PEEK_XCLOSEIM, 1, [May we use XIM peeking safely?])
@@ -1470,9 +1469,7 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
 	    CC_SEARCH_FLAGS=""
 	    LD_SEARCH_FLAGS=""
-	    if test "`uname -m`" = "alpha" ; then
-		CFLAGS="$CFLAGS -mieee"
-	    fi
+	    AS_IF([test "`uname -m`" = "alpha"], [CFLAGS="$CFLAGS -mieee"])
 	    ;;
 	Lynx*)
 	    SHLIB_CFLAGS="-fPIC"
@@ -1483,8 +1480,9 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS="-mshared -ldl"
 	    LD_FLAGS="-Wl,--export-dynamic"
-	    CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
-	    LD_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+	    AS_IF([test $doRpath = yes], [
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'])
 	    ;;
 	MP-RAS-02*)
 	    SHLIB_CFLAGS="-K PIC"
@@ -1514,19 +1512,20 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    SHLIB_SUFFIX=".so"
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS=""
-	    CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
-	    LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
+	    AS_IF([test $doRpath = yes], [
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'])
 	    AC_CACHE_CHECK([for ELF], tcl_cv_ld_elf, [
 		AC_EGREP_CPP(yes, [
 #ifdef __ELF__
 	yes
 #endif
 		], tcl_cv_ld_elf=yes, tcl_cv_ld_elf=no)])
-	    if test $tcl_cv_ld_elf = yes; then
+	    AS_IF([test $tcl_cv_ld_elf = yes], [
 		SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.so'
-	    else
+	    ], [
 		SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.so.1.0'
-	    fi
+	    ])
 
 	    # Ancient FreeBSD doesn't handle version numbers with dots.
 
@@ -1540,7 +1539,8 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    SHLIB_SUFFIX=".so"
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS=""
-	    CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+	    AS_IF([test $doRpath = yes], [
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'])
 	    LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
 	    SHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.so.1.0'
 	    AC_CACHE_CHECK([for ELF], tcl_cv_ld_elf, [
@@ -1549,11 +1549,9 @@ dnl AC_CHECK_TOOL(AR, ar)
 	yes
 #endif
 		], tcl_cv_ld_elf=yes, tcl_cv_ld_elf=no)])
-	    if test $tcl_cv_ld_elf = yes; then
+	    AS_IF([test $tcl_cv_ld_elf = yes], [
 		LDFLAGS=-Wl,-export-dynamic
-	    else
-		LDFLAGS=""
-	    fi
+	    ], [LDFLAGS=""])
 
 	    # OpenBSD doesn't do version numbers with dots.
 	    UNSHARED_LIB_SUFFIX='${TCL_TRIM_DOTS}.a'
@@ -1569,14 +1567,15 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS=""
 	    LDFLAGS="$LDFLAGS -export-dynamic"
-	    CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+	    AS_IF([test $doRpath = yes], [
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'])
 	    LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
-	    if test "${TCL_THREADS}" = "1" ; then
+	    AS_IF([test "${TCL_THREADS}" = "1"], [
 		# The -pthread needs to go in the CFLAGS, not LIBS
 		LIBS=`echo $LIBS | sed s/-pthread//`
 		CFLAGS="$CFLAGS -pthread"
 	    	LDFLAGS="$LDFLAGS -pthread"
-	    fi
+	    ])
 	    case $system in
 	    FreeBSD-3.*)
 	    	# FreeBSD-3 doesn't handle version numbers with dots.
@@ -1598,7 +1597,7 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    CFLAGS="`echo " ${CFLAGS}" | \
 		awk 'BEGIN {FS=" +-";ORS=" "}; {for (i=2;i<=NF;i++) \
 		if (!([$]i~/^(isysroot|mmacosx-version-min)/)) print "-"[$]i}'`"
-	    if test $do64bit = yes; then
+	    AS_IF([test $do64bit = yes], [
 		case `arch` in
 		    ppc)
 			AC_CACHE_CHECK([if compiler accepts -arch ppc64 flag],
@@ -1608,10 +1607,10 @@ dnl AC_CHECK_TOOL(AR, ar)
 			    AC_TRY_LINK(,, tcl_cv_cc_arch_ppc64=yes,
 				    tcl_cv_cc_arch_ppc64=no)
 			    CFLAGS=$hold_cflags])
-			if test $tcl_cv_cc_arch_ppc64 = yes; then
+			AS_IF([test $tcl_cv_cc_arch_ppc64 = yes], [
 			    CFLAGS="$CFLAGS -arch ppc64 -mpowerpc64 -mcpu=G5"
 			    do64bit_ok=yes
-			fi;;
+			]);;
 		    i386)
 			AC_CACHE_CHECK([if compiler accepts -arch x86_64 flag],
 				tcl_cv_cc_arch_x86_64, [
@@ -1620,45 +1619,47 @@ dnl AC_CHECK_TOOL(AR, ar)
 			    AC_TRY_LINK(,, tcl_cv_cc_arch_x86_64=yes,
 				    tcl_cv_cc_arch_x86_64=no)
 			    CFLAGS=$hold_cflags])
-			if test $tcl_cv_cc_arch_x86_64 = yes; then
+			AS_IF([test $tcl_cv_cc_arch_x86_64 = yes], [
 			    CFLAGS="$CFLAGS -arch x86_64"
 			    do64bit_ok=yes
-			fi;;
+			]);;
 		    *)
 			AC_MSG_WARN([Don't know how enable 64-bit on architecture `arch`]);;
 		esac
-	    else
+	    ], [
 		# Check for combined 32-bit and 64-bit fat build
-		echo "$CFLAGS " | grep -E -q -- '-arch (ppc64|x86_64) ' && \
-		    echo "$CFLAGS " | grep -E -q -- '-arch (ppc|i386) ' && \
-		    fat_32_64=yes
-	    fi
+		AS_IF([echo "$CFLAGS " |grep -E -q -- '-arch (ppc64|x86_64) ' \
+		    && echo "$CFLAGS " |grep -E -q -- '-arch (ppc|i386) '], [
+		    fat_32_64=yes])
+	    ])
 	    SHLIB_LD='${CC} -dynamiclib ${CFLAGS} ${LDFLAGS}'
 	    AC_CACHE_CHECK([if ld accepts -single_module flag], tcl_cv_ld_single_module, [
 		hold_ldflags=$LDFLAGS
 		LDFLAGS="$LDFLAGS -dynamiclib -Wl,-single_module"
 		AC_TRY_LINK(, [int i;], tcl_cv_ld_single_module=yes, tcl_cv_ld_single_module=no)
 		LDFLAGS=$hold_ldflags])
-	    if test $tcl_cv_ld_single_module = yes; then
+	    AS_IF([test $tcl_cv_ld_single_module = yes], [
 		SHLIB_LD="${SHLIB_LD} -Wl,-single_module"
-	    fi
+	    ])
 	    SHLIB_LD_LIBS='${LIBS}'
 	    SHLIB_SUFFIX=".dylib"
 	    DL_OBJS="tclLoadDyld.o"
 	    DL_LIBS=""
 	    # Don't use -prebind when building for Mac OS X 10.4 or later only:
-	    test "`echo "${MACOSX_DEPLOYMENT_TARGET}" | awk -F '10\\.' '{print int([$]2)}'`" -lt 4 -a \
-		"`echo "${CPPFLAGS}" | awk -F '-mmacosx-version-min=10\\.' '{print int([$]2)}'`" -lt 4 && \
-		LDFLAGS="$LDFLAGS -prebind"
+	    AS_IF([test "`echo "${MACOSX_DEPLOYMENT_TARGET}" | awk -F '10\\.' '{print int([$]2)}'`" -lt 4 -a \
+		"`echo "${CPPFLAGS}" | awk -F '-mmacosx-version-min=10\\.' '{print int([$]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, [
+	    AC_CACHE_CHECK([if ld accepts -search_paths_first flag],
+		    tcl_cv_ld_search_paths_first, [
 		hold_ldflags=$LDFLAGS
 		LDFLAGS="$LDFLAGS -Wl,-search_paths_first"
-		AC_TRY_LINK(, [int i;], tcl_cv_ld_search_paths_first=yes, tcl_cv_ld_search_paths_first=no)
+		AC_TRY_LINK(, [int i;], tcl_cv_ld_search_paths_first=yes,
+			tcl_cv_ld_search_paths_first=no)
 		LDFLAGS=$hold_ldflags])
-	    if test $tcl_cv_ld_search_paths_first = yes; then
+	    AS_IF([test $tcl_cv_ld_search_paths_first = yes], [
 		LDFLAGS="$LDFLAGS -Wl,-search_paths_first"
-	    fi
+	    ])
 	    CC_SEARCH_FLAGS=""
 	    LD_SEARCH_FLAGS=""
 	    LD_LIBRARY_PATH_VAR="DYLD_LIBRARY_PATH"
@@ -1670,51 +1671,57 @@ dnl AC_CHECK_TOOL(AR, ar)
 		    [use CoreFoundation API on MacOSX (default: on)]),
 		[tcl_corefoundation=$enableval], [tcl_corefoundation=yes])
 	    AC_MSG_RESULT([$tcl_corefoundation])
-	    if test $tcl_corefoundation = yes; then
-		AC_CACHE_CHECK([for CoreFoundation.framework], tcl_cv_lib_corefoundation, [
+	    AS_IF([test $tcl_corefoundation = yes], [
+		AC_CACHE_CHECK([for CoreFoundation.framework],
+			tcl_cv_lib_corefoundation, [
 		    hold_libs=$LIBS
-		    if test "$fat_32_64" = yes; then for v in CFLAGS CPPFLAGS LDFLAGS; do
-			# On Tiger there is no 64-bit CF, so remove 64-bit archs
-			# from CFLAGS et al. while testing for presence of CF.
-			# 64-bit CF is disabled in tclUnixPort.h if necessary.
-			eval 'hold_'$v'="$'$v'";'$v'="`echo "$'$v' "|sed -e "s/-arch ppc64 / /g" -e "s/-arch x86_64 / /g"`"'
-		    done; fi
+		    AS_IF([test "$fat_32_64" = yes], [
+			for v in CFLAGS CPPFLAGS LDFLAGS; do
+			    # On Tiger there is no 64-bit CF, so remove 64-bit
+			    # archs from CFLAGS et al. while testing for
+			    # presence of CF. 64-bit CF is disabled in
+			    # tclUnixPort.h if necessary.
+			    eval 'hold_'$v'="$'$v'";'$v'="`echo "$'$v' "|sed -e "s/-arch ppc64 / /g" -e "s/-arch x86_64 / /g"`"'
+			done])
 		    LIBS="$LIBS -framework CoreFoundation"
 		    AC_TRY_LINK([#include <CoreFoundation/CoreFoundation.h>], 
 			[CFBundleRef b = CFBundleGetMainBundle();], 
-			tcl_cv_lib_corefoundation=yes, tcl_cv_lib_corefoundation=no)
-		    if test "$fat_32_64" = yes; then for v in CFLAGS CPPFLAGS LDFLAGS; do
-			eval $v'="$hold_'$v'"'
-		    done; fi; LIBS=$hold_libs])
-		if test $tcl_cv_lib_corefoundation = yes; then
+			tcl_cv_lib_corefoundation=yes,
+			tcl_cv_lib_corefoundation=no)
+		    AS_IF([test "$fat_32_64" = yes], [
+			for v in CFLAGS CPPFLAGS LDFLAGS; do
+			    eval $v'="$hold_'$v'"'
+		        done])
+		    LIBS=$hold_libs])
+		AS_IF([test $tcl_cv_lib_corefoundation = yes], [
 		    LIBS="$LIBS -framework CoreFoundation"
 		    AC_DEFINE(HAVE_COREFOUNDATION, 1, 
 			[Do we have access to Darwin CoreFoundation.framework?])
-		else
-		    tcl_corefoundation=no
-		fi
-		if test "$fat_32_64" = yes -a $tcl_corefoundation = yes; then
-		    AC_CACHE_CHECK([for 64-bit CoreFoundation], tcl_cv_lib_corefoundation_64, [
+		], [tcl_corefoundation=no])
+		AS_IF([test "$fat_32_64" = yes -a $tcl_corefoundation = yes],[
+		    AC_CACHE_CHECK([for 64-bit CoreFoundation],
+			    tcl_cv_lib_corefoundation_64, [
 			for v in CFLAGS CPPFLAGS LDFLAGS; do
 			    eval 'hold_'$v'="$'$v'";'$v'="`echo "$'$v' "|sed -e "s/-arch ppc / /g" -e "s/-arch i386 / /g"`"'
 			done
 			AC_TRY_LINK([#include <CoreFoundation/CoreFoundation.h>], 
 			    [CFBundleRef b = CFBundleGetMainBundle();], 
-			    tcl_cv_lib_corefoundation_64=yes, tcl_cv_lib_corefoundation_64=no)
+			    tcl_cv_lib_corefoundation_64=yes,
+			    tcl_cv_lib_corefoundation_64=no)
 			for v in CFLAGS CPPFLAGS LDFLAGS; do
 			    eval $v'="$hold_'$v'"'
 			done])
-		    if test $tcl_cv_lib_corefoundation_64 = no; then
+		    AS_IF([test $tcl_cv_lib_corefoundation_64 = no], [
 			AC_DEFINE(NO_COREFOUNDATION_64, 1,
 			    [Is Darwin CoreFoundation unavailable for 64-bit?])
                         LDFLAGS="$LDFLAGS -Wl,-no_arch_warnings"
-		    fi
-		fi
-	    fi
-	    if test "$tcl_cv_cc_visibility_hidden" != yes; then
+		    ])
+		])
+	    ])
+	    AS_IF([test "$tcl_cv_cc_visibility_hidden" != yes], [
 		AC_DEFINE(MODULE_SCOPE, [__private_extern__],
 		    [Compiler support for module scope symbols])
-	    fi
+	    ])
 	    AC_DEFINE(MAC_OSX_TCL, 1, [Is this a Mac I see before me?])
 	    ;;
 	NEXTSTEP-*)
@@ -1747,11 +1754,9 @@ dnl AC_CHECK_TOOL(AR, ar)
 	OSF1-1.*)
 	    # OSF/1 1.3 from OSF using ELF, and derivatives, including AD2
 	    SHLIB_CFLAGS="-fPIC"
-	    if test "$SHARED_BUILD" = "1" ; then
-	        SHLIB_LD="ld -shared"
-	    else
+	    AS_IF([test "$SHARED_BUILD" = 1], [SHLIB_LD="ld -shared"], [
 	        SHLIB_LD="ld -non_shared"
-	    fi
+	    ])
 	    SHLIB_LD_LIBS=""
 	    SHLIB_SUFFIX=".so"
 	    DL_OBJS="tclLoadDl.o"
@@ -1762,35 +1767,32 @@ dnl AC_CHECK_TOOL(AR, ar)
 	OSF1-V*)
 	    # Digital OSF/1
 	    SHLIB_CFLAGS=""
-	    if test "$SHARED_BUILD" = "1" ; then
+	    AS_IF([test "$SHARED_BUILD" = 1], [
 	        SHLIB_LD='ld -shared -expect_unresolved "*"'
-	    else
+	    ], [
 	        SHLIB_LD='ld -non_shared -expect_unresolved "*"'
-	    fi
+	    ])
 	    SHLIB_LD_LIBS=""
 	    SHLIB_SUFFIX=".so"
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS=""
-	    CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
-	    LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'
-	    if test "$GCC" = "yes" ; then
-		CFLAGS="$CFLAGS -mieee"
-            else
-		CFLAGS="$CFLAGS -DHAVE_TZSET -std1 -ieee"
-	    fi
+	    AS_IF([test $doRpath = yes], [
+		CC_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
+		LD_SEARCH_FLAGS='-rpath ${LIB_RUNTIME_DIR}'])
+	    AS_IF([test "$GCC" = yes], [CFLAGS="$CFLAGS -mieee"], [
+		CFLAGS="$CFLAGS -DHAVE_TZSET -std1 -ieee"])
 	    # see pthread_intro(3) for pthread support on osf1, k.furukawa
-	    if test "${TCL_THREADS}" = "1" ; then
+	    AS_IF([test "${TCL_THREADS}" = 1], [
 		CFLAGS="$CFLAGS -DHAVE_PTHREAD_ATTR_SETSTACKSIZE"
 		CFLAGS="$CFLAGS -DTCL_THREAD_STACK_MIN=PTHREAD_STACK_MIN*64"
 		LIBS=`echo $LIBS | sed s/-lpthreads//`
-		if test "$GCC" = "yes" ; then
+		AS_IF([test "$GCC" = yes], [
 		    LIBS="$LIBS -lpthread -lmach -lexc"
-		else
+		], [
 		    CFLAGS="$CFLAGS -pthread"
 		    LDFLAGS="$LDFLAGS -pthread"
-		fi
-	    fi
-
+		])
+	    ])
 	    ;;
 	QNX-6*)
 	    # QNX RTP
@@ -1809,13 +1811,13 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    # Note, dlopen is available only on SCO 3.2.5 and greater. However,
 	    # this test works, since "uname -s" was non-standard in 3.2.4 and
 	    # below.
-	    if test "$GCC" = "yes" ; then
+	    AS_IF([test "$GCC" = yes], [
 	    	SHLIB_CFLAGS="-fPIC -melf"
 	    	LDFLAGS="$LDFLAGS -melf -Wl,-Bexport"
-	    else
+	    ], [
 	    	SHLIB_CFLAGS="-Kpic -belf"
 	    	LDFLAGS="$LDFLAGS -belf -Wl,-Bexport"
-	    fi
+	    ])
 	    SHLIB_LD="ld -G"
 	    SHLIB_LD_LIBS=""
 	    SHLIB_SUFFIX=".so"
@@ -1872,15 +1874,15 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    SHLIB_SUFFIX=".so"
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS="-ldl"
-	    if test "$GCC" = "yes" ; then
+	    AS_IF([test "$GCC" = yes], [
 		SHLIB_LD='${CC} -shared'
 		CC_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
 		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
-	    else
+	    ], [
 		SHLIB_LD="/usr/ccs/bin/ld -G -z text"
 		CC_SEARCH_FLAGS='-R ${LIB_RUNTIME_DIR}'
 		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
-	    fi
+	    ])
 	    ;;
 	SunOS-5*)
 	    # Note: If _REENTRANT isn't defined, then Solaris
@@ -1893,42 +1895,40 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    SHLIB_CFLAGS="-KPIC"
 
 	    # Check to enable 64-bit flags for compiler/linker
-	    if test "$do64bit" = "yes" ; then
+	    AS_IF([test "$do64bit" = yes], [
 		arch=`isainfo`
-		if test "$arch" = "sparcv9 sparc" ; then
-			if test "$GCC" = "yes" ; then
-			    if test "`${CC} -dumpversion | awk -F. '{print [$]1}'`" -lt "3" ; then
-				AC_MSG_WARN([64bit mode not supported with GCC < 3.2 on $system])
-			    else
-				do64bit_ok=yes
-				CFLAGS="$CFLAGS -m64 -mcpu=v9"
-				LDFLAGS="$LDFLAGS -m64 -mcpu=v9"
-				SHLIB_CFLAGS="-fPIC"
-			    fi
-			else
+		AS_IF([test "$arch" = "sparcv9 sparc"], [
+		    AS_IF([test "$GCC" = yes], [
+			AS_IF([test "`${CC} -dumpversion | awk -F. '{print [$]1}'`" -lt 3], [
+			    AC_MSG_WARN([64bit mode not supported with GCC < 3.2 on $system])
+			], [
 			    do64bit_ok=yes
-			    if test "$do64bitVIS" = "yes" ; then
-				CFLAGS="$CFLAGS -xarch=v9a"
-			    	LDFLAGS_ARCH="-xarch=v9a"
-			    else
-				CFLAGS="$CFLAGS -xarch=v9"
-			    	LDFLAGS_ARCH="-xarch=v9"
-			    fi
-			    # Solaris 64 uses this as well
-			    #LD_LIBRARY_PATH_VAR="LD_LIBRARY_PATH_64"
-			fi
-		elif test "$arch" = "amd64 i386" ; then
-		    if test "$GCC" = "yes" ; then
+			    CFLAGS="$CFLAGS -m64 -mcpu=v9"
+			    LDFLAGS="$LDFLAGS -m64 -mcpu=v9"
+			    SHLIB_CFLAGS="-fPIC"
+			])
+		    ], [
+			do64bit_ok=yes
+			AS_IF([test "$do64bitVIS" = yes], [
+			    CFLAGS="$CFLAGS -xarch=v9a"
+			    LDFLAGS_ARCH="-xarch=v9a"
+			], [
+			    CFLAGS="$CFLAGS -xarch=v9"
+			    LDFLAGS_ARCH="-xarch=v9"
+			])
+			# Solaris 64 uses this as well
+			#LD_LIBRARY_PATH_VAR="LD_LIBRARY_PATH_64"
+		    ])
+		], [AS_IF([test "$arch" = "amd64 i386"], [
+		    AS_IF([test "$GCC" = yes], [
 			AC_MSG_WARN([64bit mode not supported with GCC on $system])
-		    else
+		    ], [
 			do64bit_ok=yes
 			CFLAGS="$CFLAGS -xarch=amd64"
 			LDFLAGS="$LDFLAGS -xarch=amd64"
-		    fi
-		else
-		    AC_MSG_WARN([64bit mode not supported for $arch])
-		fi
-	    fi
+		    ])
+		], [AC_MSG_WARN([64bit mode not supported for $arch])])])
+	    ])
 	    
 	    # Note: need the LIBS below, otherwise Tk won't find Tcl's
 	    # symbols when dynamically loaded into tclsh.
@@ -1937,11 +1937,11 @@ dnl AC_CHECK_TOOL(AR, ar)
 	    SHLIB_SUFFIX=".so"
 	    DL_OBJS="tclLoadDl.o"
 	    DL_LIBS="-ldl"
-	    if test "$GCC" = "yes" ; then
+	    AS_IF([test "$GCC" = yes], [
 		SHLIB_LD='${CC} -shared'
 		CC_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
 		LD_SEARCH_FLAGS=${CC_SEARCH_FLAGS}
-		if test "$do64bit_ok" = "yes" ; then
+		AS_IF([test "$do64bit_ok" = yes], [
 		    # We need to specify -static-libgcc or we need to
 		    # add the path to the sparv9 libgcc.
 		    SHLIB_LD="$SHLIB_LD -m64 -mcpu=v9 -static-libgcc"
@@ -1949,8 +1949,8 @@ dnl AC_CHECK_TOOL(AR, ar)
 		    # path, remove so name and append 'sparcv9'
 		    #v9gcclibdir="`gcc -print-file-name=libgcc_s.so` | ..."
 		    #CC_SEARCH_FLAGS="${CC_SEARCH_FLAGS},-R,$v9gcclibdir"
-		fi
-	    else
+		])
+	    ], [
 		case $system in
 		    SunOS-5.[[1-9]][[0-9]]*)
 			SHLIB_LD='${CC} -G -z text';;
@@ -1959,7 +1959,7 @@ dnl AC_CHECK_TOOL(AR, ar)
 		esac
 		CC_SEARCH_FLAGS='-Wl,-R,${LIB_RUNTIME_DIR}'
 		LD_SEARCH_FLAGS='-R ${LIB_RUNTIME_DIR}'
-	    fi
+	    ])
 	    ;;
 	UNIX_SV* | UnixWare-5*)
 	    SHLIB_CFLAGS="-KPIC"
@@ -1975,21 +1975,21 @@ dnl AC_CHECK_TOOL(AR, ar)
 		LDFLAGS="$LDFLAGS -Wl,-Bexport"
 		AC_TRY_LINK(, [int i;], tcl_cv_ld_Bexport=yes, tcl_cv_ld_Bexport=no)
 	        LDFLAGS=$hold_ldflags])
-	    if test $tcl_cv_ld_Bexport = yes; then
+	    AS_IF([test $tcl_cv_ld_Bexport = yes], [
 		LDFLAGS="$LDFLAGS -Wl,-Bexport"
-	    fi
+	    ])
 	    CC_SEARCH_FLAGS=""
 	    LD_SEARCH_FLAGS=""
 	    ;;
     esac
 
-    if test "$do64bit" = "yes" -a "$do64bit_ok" = "no" ; then
+    AS_IF([test "$do64bit" = yes -a "$do64bit_ok" = no], [
 	AC_MSG_WARN([64bit support being disabled -- don't know magic for this platform])
-    fi
+    ])
 
-    if test "$do64bit" = "yes" -a "$do64bit_ok" = "yes" ; then
+    AS_IF([test "$do64bit" = yes -a "$do64bit_ok" = yes], [
 	AC_DEFINE(TCL_CFG_DO64BIT, 1, [Is this a 64-bit build?])
-    fi
+    ])
 
 dnl # Add any CPPFLAGS set in the environment to our CFLAGS, but delay doing so
 dnl # until the end of configure, as configure's compile and link tests use
@@ -2003,15 +2003,10 @@ dnl # preprocessing tests use only CPPFLAGS.
 	AC_HELP_STRING([--enable-load],
 	    [allow dynamic loading and "load" command (default: on)]),
 	[tcl_ok=$enableval], [tcl_ok=yes])
-    if test "$tcl_ok" = "no"; then
-	DL_OBJS=""
-    fi
+    AS_IF([test "$tcl_ok" = no], [DL_OBJS=""])
 
-    if test "x$DL_OBJS" != "x" ; then
-	BUILD_DLTEST="\$(DLTEST_TARGETS)"
-    else
-	echo "Can't figure out how to do dynamic loading or shared libraries"
-	echo "on this system."
+    AS_IF([test "x$DL_OBJS" != x], [BUILD_DLTEST="\$(DLTEST_TARGETS)"], [
+	AC_MSG_WARN([Can't figure out how to do dynamic loading or shared libraries on this system.])
 	SHLIB_CFLAGS=""
 	SHLIB_LD=""
 	SHLIB_SUFFIX=""
@@ -2021,89 +2016,59 @@ dnl # preprocessing tests use only CPPFLAGS.
 	CC_SEARCH_FLAGS=""
 	LD_SEARCH_FLAGS=""
 	BUILD_DLTEST=""
-    fi
+    ])
     LDFLAGS="$LDFLAGS $LDFLAGS_ARCH"
 
     # If we're running gcc, then change the C flags for compiling shared
     # libraries to the right flags for gcc, instead of those for the
     # standard manufacturer compiler.
 
-    if test "$DL_OBJS" != "tclLoadNone.o" ; then
-	if test "$GCC" = "yes" ; then
-	    case $system in
-		AIX-*)
-		    ;;
-		BSD/OS*)
-		    ;;
-		IRIX*)
-		    ;;
-		NetBSD-*|FreeBSD-*)
-		    ;;
-		Darwin-*)
-		    ;;
-		SCO_SV-3.2*)
-		    ;;
-		*)
-		    SHLIB_CFLAGS="-fPIC"
-		    ;;
-	    esac
-	fi
-    fi
-
-    if test "$SHARED_LIB_SUFFIX" = "" ; then
-	SHARED_LIB_SUFFIX='${VERSION}${SHLIB_SUFFIX}'
-    fi
-    if test "$UNSHARED_LIB_SUFFIX" = "" ; then
-	UNSHARED_LIB_SUFFIX='${VERSION}.a'
-    fi
-
-    if test "${SHARED_BUILD}" = "1" && test "${SHLIB_SUFFIX}" != "" ; then
+    AS_IF([test "$DL_OBJS" != "tclLoadNone.o" -a "$GCC" = yes], [
+	case $system in
+	    AIX-*) ;;
+	    BSD/OS*) ;;
+	    IRIX*) ;;
+	    NetBSD-*|FreeBSD-*) ;;
+	    Darwin-*) ;;
+	    SCO_SV-3.2*) ;;
+	    *) SHLIB_CFLAGS="-fPIC" ;;
+	esac])
+
+    AS_IF([test "$SHARED_LIB_SUFFIX" = ""], [
+	SHARED_LIB_SUFFIX='${VERSION}${SHLIB_SUFFIX}'])
+    AS_IF([test "$UNSHARED_LIB_SUFFIX" = ""], [
+	UNSHARED_LIB_SUFFIX='${VERSION}.a'])
+
+    AS_IF([test "${SHARED_BUILD}" = 1 -a "${SHLIB_SUFFIX}" != ""], [
         LIB_SUFFIX=${SHARED_LIB_SUFFIX}
         MAKE_LIB='${SHLIB_LD} -o [$]@ ${OBJS} ${SHLIB_LD_LIBS} ${TCL_SHLIB_LD_EXTRAS} ${TK_SHLIB_LD_EXTRAS} ${LD_SEARCH_FLAGS}'
         INSTALL_LIB='$(INSTALL_LIBRARY) $(LIB_FILE) $(LIB_INSTALL_DIR)/$(LIB_FILE)'
-    else
+    ], [
         LIB_SUFFIX=${UNSHARED_LIB_SUFFIX}
 
-        if test "$RANLIB" = "" ; then
+        AS_IF([test "$RANLIB" = ""], [
             MAKE_LIB='$(STLIB_LD) [$]@ ${OBJS}'
             INSTALL_LIB='$(INSTALL_LIBRARY) $(LIB_FILE) $(LIB_INSTALL_DIR)/$(LIB_FILE)'
-        else
+        ], [
             MAKE_LIB='${STLIB_LD} [$]@ ${OBJS} ; ${RANLIB} [$]@'
             INSTALL_LIB='$(INSTALL_LIBRARY) $(LIB_FILE) $(LIB_INSTALL_DIR)/$(LIB_FILE) ; (cd $(LIB_INSTALL_DIR) ; $(RANLIB) $(LIB_FILE))'
-        fi
-
-dnl        Not at all clear what this was doing in Tcl's configure.in
-dnl        or why it was needed was needed. In any event, this sort of
-dnl        things needs to be done in the big loop above.
-dnl        REMOVE THIS BLOCK LATER! (mdejong)
-dnl        case $system in
-dnl            BSD/OS*)
-dnl                ;;
-dnl            AIX-[[1-4]].*)
-dnl                ;;
-dnl            *)
-dnl                SHLIB_LD_LIBS=""
-dnl                ;;
-dnl        esac
-    fi
-
+        ])
+    ])
 
     # Stub lib does not depend on shared/static configuration
-    if test "$RANLIB" = "" ; then
+    AS_IF([test "$RANLIB" = ""], [
         MAKE_STUB_LIB='${STLIB_LD} [$]@ ${STUB_LIB_OBJS}'
         INSTALL_STUB_LIB='$(INSTALL_LIBRARY) $(STUB_LIB_FILE) $(LIB_INSTALL_DIR)/$(STUB_LIB_FILE)'
-    else
+    ], [
         MAKE_STUB_LIB='${STLIB_LD} [$]@ ${STUB_LIB_OBJS} ; ${RANLIB} [$]@'
         INSTALL_STUB_LIB='$(INSTALL_LIBRARY) $(STUB_LIB_FILE) $(LIB_INSTALL_DIR)/$(STUB_LIB_FILE) ; (cd $(LIB_INSTALL_DIR) ; $(RANLIB) $(STUB_LIB_FILE))'
-    fi
+    ])
 
     # Define TCL_LIBS now that we know what DL_LIBS is.
-    # The trick here is that we don't want to change
-    # the value of TCL_LIBS if it is already set when
-    # tclConfig.sh had been loaded by Tk.
-    if test "x${TCL_LIBS}" = "x"; then
-        TCL_LIBS="${DL_LIBS} ${LIBS} ${MATH_LIBS}"
-    fi
+    # The trick here is that we don't want to change the value of TCL_LIBS if
+    # it is already set when tclConfig.sh had been loaded by Tk.
+    AS_IF([test "x${TCL_LIBS}" = x], [
+        TCL_LIBS="${DL_LIBS} ${LIBS} ${MATH_LIBS}"])
     AC_SUBST(TCL_LIBS)
 
     # FIXME: This subst was left in only because the TCL_DL_LIBS
@@ -3006,6 +2971,37 @@ AC_DEFUN([SC_TCL_GETHOSTBYNAME_R], [AC_CHECK_FUNC(gethostbyname_r, [
 ])])
 
 #--------------------------------------------------------------------
+# SC_TCL_GETADDRINFO
+#
+#	Check if we have 'getaddrinfo'
+#
+# Arguments:
+#	None
+#	
+# Results:
+#	Might define the following vars:
+#		HAVE_GETADDRINFO
+#
+#--------------------------------------------------------------------
+
+AC_DEFUN([SC_TCL_GETADDRINFO], [AC_CHECK_FUNC(getaddrinfo, [
+    AC_CACHE_CHECK([for working getaddrinfo], tcl_cv_api_getaddrinfo, [
+    AC_TRY_COMPILE([
+	#include <netdb.h>
+    ], [
+	const char *name, *port;
+	struct addrinfo *aiPtr, hints;
+	(void)getaddrinfo(name,port, &hints, &aiPtr);
+	(void)freeaddrinfo(aiPtr);
+    ], tcl_cv_api_getaddrinfo=yes, tcl_cv_getaddrinfo=no)])
+    tcl_ok=$tcl_cv_api_getaddrinfo
+    if test "$tcl_ok" = yes; then
+	AC_DEFINE(HAVE_GETADDRINFO, 1,
+	    [Define to 1 if getaddrinfo is available.])
+    fi
+])])
+
+#--------------------------------------------------------------------
 # SC_TCL_GETPWUID_R
 #
 #	Check if we have MT-safe variant of getpwuid() and if yes,
diff --git a/unix/tclConfig.h.in b/unix/tclConfig.h.in
index 0dc1839..7443fd6 100644
--- a/unix/tclConfig.h.in
+++ b/unix/tclConfig.h.in
@@ -34,6 +34,9 @@
 /* Do we have fts functions? */
 #undef HAVE_FTS
 
+/* Define to 1 if getaddrinfo is available. */
+#undef HAVE_GETADDRINFO
+
 /* Define to 1 if you have the `getattrlist' function. */
 #undef HAVE_GETATTRLIST
 
@@ -379,7 +382,7 @@
 /* What is the default extension for shared libraries? */
 #undef TCL_SHLIB_EXT
 
-/* The C stack grows upwards in memory */
+/* The C stack grows upwards in memory. */
 #undef TCL_STACK_GROWS_UP
 
 /* Are we building with threads enabled? */
diff --git a/unix/tclUnixChan.c b/unix/tclUnixChan.c
index 368dd20..5d81a57 100644
--- a/unix/tclUnixChan.c
+++ b/unix/tclUnixChan.c
@@ -10,7 +10,7 @@
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * RCS: @(#) $Id: tclUnixChan.c,v 1.77.2.4 2007/11/12 19:18:24 dgp Exp $
+ * RCS: @(#) $Id: tclUnixChan.c,v 1.77.2.5 2007/11/16 07:20:58 dgp Exp $
  */
 
 #include "tclInt.h"	/* Internal definitions for Tcl. */
@@ -237,7 +237,8 @@ static TcpState *	CreateSocket(Tcl_Interp *interp, int port,
 			    const char *host, int server, const char *myaddr,
 			    int myport, int async);
 static int		CreateSocketAddress(struct sockaddr_in *sockaddrPtr,
-			    const char *host, int port);
+			    const char *host, int port, int willBind,
+			    const char **errorMsgPtr);
 static int		FileBlockModeProc(ClientData instanceData, int mode);
 static int		FileCloseProc(ClientData instanceData,
 			    Tcl_Interp *interp);
@@ -2469,14 +2470,15 @@ CreateSocket(
     struct sockaddr_in sockaddr;	/* socket address */
     struct sockaddr_in mysockaddr;	/* Socket address for client */
     TcpState *statePtr;
+    const char *errorMsg = NULL;
 
     sock = -1;
     origState = 0;
-    if (!CreateSocketAddress(&sockaddr, host, port)) {
+    if (!CreateSocketAddress(&sockaddr, host, port, 0, &errorMsg)) {
 	goto addressError;
     }
     if ((myaddr != NULL || myport != 0) &&
-	    !CreateSocketAddress(&mysockaddr, myaddr, myport)) {
+	    !CreateSocketAddress(&mysockaddr, myaddr, myport, 1, &errorMsg)) {
 	goto addressError;
     }
 
@@ -2608,6 +2610,9 @@ CreateSocket(
     if (interp != NULL) {
 	Tcl_AppendResult(interp, "couldn't open socket: ",
 		Tcl_PosixError(interp), NULL);
+	if (errorMsg != NULL) {
+	    Tcl_AppendResult(interp, " (", errorMsg, ")", NULL);
+	}
     }
     return NULL;
 }
@@ -2633,9 +2638,67 @@ static int
 CreateSocketAddress(
     struct sockaddr_in *sockaddrPtr,	/* Socket address */
     const char *host,			/* Host. NULL implies INADDR_ANY */
-    int port)				/* Port number */
+    int port,				/* Port number */
+    int willBind,			/* Is this an address to bind() to or
+					 * to connect() to? */
+    const char **errorMsgPtr)		/* Place to store the error message
+					 * detail, if available. */
 {
-    struct hostent *hostent;		/* Host database entry */
+#ifdef HAVE_GETADDRINFO
+    struct addrinfo hints, *resPtr = NULL;
+    char *native;
+    Tcl_DString ds;
+    int result;
+
+    if (host == NULL) {
+	sockaddrPtr->sin_family = AF_INET;
+	sockaddrPtr->sin_addr.s_addr = INADDR_ANY;
+    addPort:
+	sockaddrPtr->sin_port = htons((unsigned short) (port & 0xFFFF));
+	return 1;
+    }
+
+    (void) memset(&hints, 0, sizeof(struct addrinfo));
+    hints.ai_family = AF_INET;
+    hints.ai_socktype = SOCK_STREAM;
+    if (willBind) {
+	hints.ai_flags |= AI_PASSIVE;
+    }
+
+    /*
+     * Note that getaddrinfo() *is* thread-safe. If a platform doesn't get
+     * that right, it shouldn't use this part of the code.
+     */
+
+    native = Tcl_UtfToExternalDString(NULL, host, -1, &ds);
+    result = getaddrinfo(native, NULL, &hints, &resPtr);
+    Tcl_DStringFree(&ds);
+    if (result == 0) {
+	memcpy(sockaddrPtr, resPtr->ai_addr, sizeof(struct sockaddr_in));
+	freeaddrinfo(resPtr);
+	goto addPort;
+    }
+
+    /*
+     * Ought to use gai_strerror() here...
+     */
+
+    switch (result) {
+    case EAI_NONAME:
+    case EAI_SERVICE:
+    case EAI_ADDRFAMILY:
+    case EAI_NODATA:
+	*errorMsgPtr = gai_strerror(result);
+	errno = EHOSTUNREACH;
+	return 0;
+    case EAI_SYSTEM:
+	return 0;
+    default:
+	*errorMsgPtr = gai_strerror(result);
+	errno = ENXIO;
+	return 0;
+    }
+#else /* !HAVE_GETADDRINFO */
     struct in_addr addr;		/* For 64/32 bit madness */
 
     (void) memset(sockaddrPtr, '\0', sizeof(struct sockaddr_in));
@@ -2644,10 +2707,15 @@ CreateSocketAddress(
     if (host == NULL) {
 	addr.s_addr = INADDR_ANY;
     } else {
+	struct hostent *hostent;	/* Host database entry */
 	Tcl_DString ds;
 	const char *native;
 
-	native = Tcl_UtfToExternalDString(NULL, host, -1, &ds);
+	if (host == NULL) {
+	    native = NULL;
+	} else {
+	    native = Tcl_UtfToExternalDString(NULL, host, -1, &ds);
+	}
 	addr.s_addr = inet_addr(native);		/* INTL: Native. */
 
 	/*
@@ -2656,8 +2724,11 @@ CreateSocketAddress(
 	 */
 
 	if (addr.s_addr == 0xFFFFFFFF) {
-	    hostent = gethostbyname(native);		/* INTL: Native. */
-	    if (hostent == NULL) {
+	    hostent = TclpGetHostByName(native);	/* INTL: Native. */
+	    if (hostent != NULL) {
+		memcpy(&addr, hostent->h_addr_list[0],
+			(size_t) hostent->h_length);
+	    } else {
 #ifdef	EHOSTUNREACH
 		errno = EHOSTUNREACH;
 #else /* !EHOSTUNREACH */
@@ -2665,13 +2736,15 @@ CreateSocketAddress(
 		errno = ENXIO;
 #endif /* ENXIO */
 #endif /* EHOSTUNREACH */
-		Tcl_DStringFree(&ds);
+		if (native != NULL) {
+		    Tcl_DStringFree(&ds);
+		}
 		return 0;	/* Error. */
 	    }
-	    memcpy(&addr, (void *) hostent->h_addr_list[0],
-		    (size_t) hostent->h_length);
 	}
-	Tcl_DStringFree(&ds);
+	if (native != NULL) {
+	    Tcl_DStringFree(&ds);
+	}
     }
 
     /*
@@ -2683,6 +2756,7 @@ CreateSocketAddress(
 
     sockaddrPtr->sin_addr.s_addr = addr.s_addr;
     return 1;			/* Success. */
+#endif /* HAVE_GETADDRINFO */
 }
 
 /*
diff --git a/unix/tclUnixCompat.c b/unix/tclUnixCompat.c
index a7ae7ed..9436ae7 100644
--- a/unix/tclUnixCompat.c
+++ b/unix/tclUnixCompat.c
@@ -6,7 +6,7 @@
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * RCS: @(#) $Id: tclUnixCompat.c,v 1.9.2.2 2007/09/07 01:23:38 dgp Exp $
+ * RCS: @(#) $Id: tclUnixCompat.c,v 1.9.2.3 2007/11/16 07:20:58 dgp Exp $
  *
  */
 
@@ -345,12 +345,12 @@ TclpGetHostByName(
 			   sizeof(tsdPtr->hbuf), &h_errno);
 
 #elif defined(HAVE_GETHOSTBYNAME_R_6)
-    struct hostent *hePtr;
-    int h_errno;
+    struct hostent *hePtr = NULL;
+    int h_errno, result;
 
-    return (gethostbyname_r(name, &tsdPtr->hent, tsdPtr->hbuf,
-		sizeof(tsdPtr->hbuf), &hePtr, &h_errno) == 0)
-	    ? &tsdPtr->hent : NULL;
+    result = gethostbyname_r(name, &tsdPtr->hent, tsdPtr->hbuf,
+	    sizeof(tsdPtr->hbuf), &hePtr, &h_errno);
+    return (result == 0) ? hePtr : NULL;
 
 #elif defined(HAVE_GETHOSTBYNAME_R_3)
     struct hostent_data data;
diff --git a/unix/tclUnixInit.c b/unix/tclUnixInit.c
index 1e6d8f8..83a2a32 100644
--- a/unix/tclUnixInit.c
+++ b/unix/tclUnixInit.c
@@ -7,7 +7,7 @@
  * Copyright (c) 1999 by Scriptics Corporation.
  * All rights reserved.
  *
- * RCS: @(#) $Id: tclUnixInit.c,v 1.70.2.2 2007/11/12 19:18:24 dgp Exp $
+ * RCS: @(#) $Id: tclUnixInit.c,v 1.70.2.3 2007/11/16 07:20:58 dgp Exp $
  */
 
 #include "tclInt.h"
@@ -38,12 +38,10 @@
 #endif
 
 /*
- * Define this if you want to revert to the old behavior of never checking the
- * stack.
+ * Define TCL_NO_STACK_CHECK in the compiler options if you want to revert to
+ * the old behavior of never checking the stack.
  */
 
-#undef TCL_NO_STACK_CHECK
-
 /*
  * Define this if you want to see a lot of output regarding stack checking.
  */