Update.

	* configure.in: Add test for local label subtraction.
	* config.h.in: Ad HAVE_SUBTRACT_LOCAL_LABELS.
	* stdio-common/vfprintf.c (vfprintf): Use subtraction of local
	labels to reduce number of runtime relocations and move jump
	tables in read-only seciton.

5 files changed, 365 insertions, 201 deletions

diff --git a/ChangeLog b/ChangeLog
index 6060305497..58256b584c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 1999-07-30  Ulrich Drepper  <drepper@cygnus.com>
 
+	* configure.in: Add test for local label subtraction.
+	* config.h.in: Ad HAVE_SUBTRACT_LOCAL_LABELS.
+	* stdio-common/vfprintf.c (vfprintf): Use subtraction of local
+	labels to reduce number of runtime relocations and move jump
+	tables in read-only seciton.
+
 	* malloc/malloc.c (ptmalloc_init): Correct last patch.  The
 	assignment cannot be moved.
 
diff --git a/config.h.in b/config.h.in
index 05826b6f6f..9eacb95389 100644
--- a/config.h.in
+++ b/config.h.in
@@ -80,6 +80,10 @@
 /* Linux specific: minimum supported kernel version.  */
 #undef	__LINUX_KERNEL_VERSION
 
+/* An extension in gcc 2.96 and up allows to substract the values of two
+   local labels.  */
+#undef	HAVE_SUBTRACT_LOCAL_LABELS
+
 /*
  */
 
diff --git a/configure b/configure
index 99abb30b5e..aa8b2fdfad 100755
--- a/configure
+++ b/configure
@@ -12,7 +12,7 @@
 
 
 # Guess values for system-dependent variables and create Makefiles.
-# Generated automatically using autoconf version 2.13 
+# Generated automatically using autoconf version 2.14.1 
 # Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc.
 #
 # This configure script is free software; the Free Software Foundation
@@ -388,7 +388,7 @@ EOF
     verbose=yes ;;
 
   -version | --version | --versio | --versi | --vers)
-    echo "configure generated by autoconf version 2.13"
+    echo "configure generated by autoconf version 2.14.1"
     exit 0 ;;
 
   -with-* | --with-*)
@@ -548,7 +548,7 @@ done
 
 if test -r "$cache_file"; then
   echo "loading cache $cache_file"
-  . $cache_file
+      test -f "$cache_file" && . $cache_file
 else
   echo "creating cache $cache_file"
   > $cache_file
@@ -600,9 +600,9 @@ done
 if test -z "$ac_aux_dir"; then
   { echo "configure: error: can not find install-sh or install.sh in scripts $srcdir/scripts" 1>&2; exit 1; }
 fi
-ac_config_guess=$ac_aux_dir/config.guess
-ac_config_sub=$ac_aux_dir/config.sub
-ac_configure=$ac_aux_dir/configure # This should be Cygnus configure.
+ac_config_guess="$SHELL $ac_aux_dir/config.guess"
+ac_config_sub="$SHELL $ac_aux_dir/config.sub"
+ac_configure="$SHELL $ac_aux_dir/configure" # This should be Cygnus configure.
 
 
 # This will get text that should go into config.make.
@@ -804,31 +804,45 @@ fi
 
 
 
+echo $ac_n "checking host system type""... $ac_c" 1>&6
+echo "configure:809: checking host system type" >&5
+if test "x$ac_cv_host" = "x" || (test "x$host" != "xNONE" && test "x$host" != "x$ac_cv_host_alias"); then
+
 # Make sure we can run config.sub.
-if ${CONFIG_SHELL-/bin/sh} $ac_config_sub sun4 >/dev/null 2>&1; then :
-else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
+  if $ac_config_sub sun4 >/dev/null 2>&1; then :
+    else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
+  fi
+
+  ac_cv_host_alias=$host
+  case "$ac_cv_host_alias" in
+  NONE)
+    case $nonopt in
+    NONE)
+      if ac_cv_host_alias=`$ac_config_guess`; then :
+      else { echo "configure: error: can not guess host type; you must specify one" 1>&2; exit 1; }
+      fi ;;
+    *) ac_cv_host_alias=$nonopt ;;
+    esac ;;
+  esac
+
+  ac_cv_host=`$ac_config_sub $ac_cv_host_alias`
+  ac_cv_host_cpu=`echo $ac_cv_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+  ac_cv_host_vendor=`echo $ac_cv_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+  ac_cv_host_os=`echo $ac_cv_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+else
+  echo $ac_n "(cached) $ac_c" 1>&6
 fi
 
-echo $ac_n "checking host system type""... $ac_c" 1>&6
-echo "configure:814: checking host system type" >&5
+echo "$ac_t""$ac_cv_host" 1>&6
+
+host=$ac_cv_host
+host_alias=$ac_cv_host_alias
+host_cpu=$ac_cv_host_cpu
+host_vendor=$ac_cv_host_vendor
+host_os=$ac_cv_host_os
+
 
-host_alias=$host
-case "$host_alias" in
-NONE)
-  case $nonopt in
-  NONE)
-    if host_alias=`${CONFIG_SHELL-/bin/sh} $ac_config_guess`; then :
-    else { echo "configure: error: can not guess host type; you must specify one" 1>&2; exit 1; }
-    fi ;;
-  *) host_alias=$nonopt ;;
-  esac ;;
-esac
 
-host=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $host_alias`
-host_cpu=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
-host_vendor=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
-host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
-echo "$ac_t""$host" 1>&6
 
 
 # The way shlib-versions is used to generate soversions.mk uses a
@@ -935,7 +949,7 @@ fi
 # This can take a while to compute.
 sysdep_dir=$srcdir/sysdeps
 echo $ac_n "checking sysdep dirs""... $ac_c" 1>&6
-echo "configure:939: checking sysdep dirs" >&5
+echo "configure:953: checking sysdep dirs" >&5
 # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1.
 os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`"
 
@@ -1139,9 +1153,9 @@ echo "$ac_t""$default_sysnames" 1>&6
 # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
 # ./install, which can be erroneously created by make from ./install.sh.
 echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&6
-echo "configure:1143: checking for a BSD compatible install" >&5
+echo "configure:1157: checking for a BSD compatible install" >&5
 if test -z "$INSTALL"; then
-if eval "test \"`echo '$''{'ac_cv_path_install'+set}'`\" = set"; then
+if eval "test \"\${ac_cv_path_install+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
     IFS="${IFS= 	}"; ac_save_IFS="$IFS"; IFS=":"
@@ -1159,6 +1173,10 @@ else
             grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then
 	    # AIX install.  It has an incompatible calling convention.
 	    :
+	  elif test $ac_prog = install &&
+	    grep pwplus $ac_dir/$ac_prog >/dev/null 2>&1; then
+	    # program-specific install script used by HP pwplus--don't use.
+	    :
 	  else
 	    ac_cv_path_install="$ac_dir/$ac_prog -c"
 	    break 2
@@ -1187,7 +1205,7 @@ echo "$ac_t""$INSTALL" 1>&6
 # It thinks the first close brace ends the variable substitution.
 test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
 
-test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL_PROGRAM}'
+test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}'
 
 test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
 
@@ -1196,8 +1214,8 @@ if test "$INSTALL" = "${srcdir}/install-sh -c"; then
   INSTALL='\$(..)./install-sh -c'
 fi
 echo $ac_n "checking whether ln -s works""... $ac_c" 1>&6
-echo "configure:1200: checking whether ln -s works" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_LN_S'+set}'`\" = set"; then
+echo "configure:1218: checking whether ln -s works" >&5
+if eval "test \"\${ac_cv_prog_LN_S+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   rm -f conftestdata
@@ -1218,23 +1236,45 @@ fi
 
 
 # These programs are version sensitive.
+
 echo $ac_n "checking build system type""... $ac_c" 1>&6
-echo "configure:1223: checking build system type" >&5
-
-build_alias=$build
-case "$build_alias" in
-NONE)
-  case $nonopt in
-  NONE) build_alias=$host_alias ;;
-  *) build_alias=$nonopt ;;
-  esac ;;
-esac
+echo "configure:1242: checking build system type" >&5
+if test "x$ac_cv_build" = "x" || (test "x$build" != "xNONE" && test "x$build" != "x$ac_cv_build_alias"); then
+
+# Make sure we can run config.sub.
+  if $ac_config_sub sun4 >/dev/null 2>&1; then :
+    else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
+  fi
+
+  ac_cv_build_alias=$build
+  case "$ac_cv_build_alias" in
+  NONE)
+    case $nonopt in
+    NONE)
+      ac_cv_build_alias=$host_alias ;;
+
+    *) ac_cv_build_alias=$nonopt ;;
+    esac ;;
+  esac
+
+  ac_cv_build=`$ac_config_sub $ac_cv_build_alias`
+  ac_cv_build_cpu=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+  ac_cv_build_vendor=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+  ac_cv_build_os=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+else
+  echo $ac_n "(cached) $ac_c" 1>&6
+fi
+
+echo "$ac_t""$ac_cv_build" 1>&6
+
+build=$ac_cv_build
+build_alias=$ac_cv_build_alias
+build_cpu=$ac_cv_build_cpu
+build_vendor=$ac_cv_build_vendor
+build_os=$ac_cv_build_os
+
+
 
-build=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $build_alias`
-build_cpu=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
-build_vendor=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
-build_os=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
-echo "$ac_t""$build" 1>&6
 
 if test $host != $build; then
   ac_tool_prefix=${host_alias}-
@@ -1247,8 +1287,8 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1251: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
+echo "configure:1291: checking for $ac_word" >&5
+if eval "test \"\${ac_cv_prog_CC+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test -n "$CC"; then
@@ -1281,7 +1321,7 @@ if test -z "$CC"; then
 else
   # Found it, now check the version.
   echo $ac_n "checking version of $CC""... $ac_c" 1>&6
-echo "configure:1285: checking version of $CC" >&5
+echo "configure:1325: checking version of $CC" >&5
   ac_prog_version=`$CC -v 2>&1 | sed -n 's/^.*version \([egcygnustp-]*[0-9.]*\).*$/\1/p'`
   case $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
@@ -1301,8 +1341,8 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1305: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_MAKE'+set}'`\" = set"; then
+echo "configure:1345: checking for $ac_word" >&5
+if eval "test \"\${ac_cv_prog_MAKE+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test -n "$MAKE"; then
@@ -1335,7 +1375,7 @@ if test -z "$MAKE"; then
 else
   # Found it, now check the version.
   echo $ac_n "checking version of $MAKE""... $ac_c" 1>&6
-echo "configure:1339: checking version of $MAKE" >&5
+echo "configure:1379: checking version of $MAKE" >&5
   ac_prog_version=`$MAKE --version 2>&1 | sed -n 's/^.*version \([0-9][0-9.]*\), by.*$/\1/p'`
   case $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
@@ -1356,8 +1396,8 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1360: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_MSGFMT'+set}'`\" = set"; then
+echo "configure:1400: checking for $ac_word" >&5
+if eval "test \"\${ac_cv_prog_MSGFMT+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test -n "$MSGFMT"; then
@@ -1390,7 +1430,7 @@ if test -z "$MSGFMT"; then
 else
   # Found it, now check the version.
   echo $ac_n "checking version of $MSGFMT""... $ac_c" 1>&6
-echo "configure:1394: checking version of $MSGFMT" >&5
+echo "configure:1434: checking version of $MSGFMT" >&5
   ac_prog_version=`$MSGFMT --version 2>&1 | sed -n 's/^.*GNU gettext.* \([0-9]*\.[0-9.]*\).*$/\1/p'`
   case $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
@@ -1410,8 +1450,8 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1414: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_MAKEINFO'+set}'`\" = set"; then
+echo "configure:1454: checking for $ac_word" >&5
+if eval "test \"\${ac_cv_prog_MAKEINFO+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test -n "$MAKEINFO"; then
@@ -1444,7 +1484,7 @@ if test -z "$MAKEINFO"; then
 else
   # Found it, now check the version.
   echo $ac_n "checking version of $MAKEINFO""... $ac_c" 1>&6
-echo "configure:1448: checking version of $MAKEINFO" >&5
+echo "configure:1488: checking version of $MAKEINFO" >&5
   ac_prog_version=`$MAKEINFO --version 2>&1 | sed -n 's/^.*GNU texinfo.* \([0-9][0-9.]*\).*$/\1/p'`
   case $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
@@ -1473,8 +1513,8 @@ test -n "$aux_missing" && echo "configure: warning:
 
 
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:1477: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_cc_works'+set}'`\" = set"; then
+echo "configure:1517: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+if eval "test \"\${ac_cv_prog_cc_works+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   
@@ -1487,12 +1527,12 @@ cross_compiling=$ac_cv_prog_cc_cross
 
 cat > conftest.$ac_ext << EOF
 
-#line 1491 "configure"
+#line 1531 "configure"
 #include "confdefs.h"
 
 main(){return(0);}
 EOF
-if { (eval echo configure:1496: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1536: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   ac_cv_prog_cc_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>/dev/null; then
@@ -1523,8 +1563,8 @@ else
  cross_linkable=yes
 fi
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:1527: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_cc_cross'+set}'`\" = set"; then
+echo "configure:1567: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
+if eval "test \"\${ac_cv_prog_cc_cross+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   :
@@ -1535,8 +1575,8 @@ echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
 cross_compiling=$ac_cv_prog_cc_cross
 
 echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
-echo "configure:1539: checking whether we are using GNU C" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
+echo "configure:1579: checking whether we are using GNU C" >&5
+if eval "test \"\${ac_cv_prog_gcc+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.c <<EOF
@@ -1544,7 +1584,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1548: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1588: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gcc=yes
 else
   ac_cv_prog_gcc=no
@@ -1556,23 +1596,45 @@ if test $ac_cv_prog_gcc != yes; then
   { echo "configure: error: GNU libc must be compiled using GNU CC" 1>&2; exit 1; }
 fi
 
+
 echo $ac_n "checking build system type""... $ac_c" 1>&6
-echo "configure:1561: checking build system type" >&5
-
-build_alias=$build
-case "$build_alias" in
-NONE)
-  case $nonopt in
-  NONE) build_alias=$host_alias ;;
-  *) build_alias=$nonopt ;;
-  esac ;;
-esac
+echo "configure:1602: checking build system type" >&5
+if test "x$ac_cv_build" = "x" || (test "x$build" != "xNONE" && test "x$build" != "x$ac_cv_build_alias"); then
+
+# Make sure we can run config.sub.
+  if $ac_config_sub sun4 >/dev/null 2>&1; then :
+    else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
+  fi
+
+  ac_cv_build_alias=$build
+  case "$ac_cv_build_alias" in
+  NONE)
+    case $nonopt in
+    NONE)
+      ac_cv_build_alias=$host_alias ;;
+
+    *) ac_cv_build_alias=$nonopt ;;
+    esac ;;
+  esac
+
+  ac_cv_build=`$ac_config_sub $ac_cv_build_alias`
+  ac_cv_build_cpu=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+  ac_cv_build_vendor=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+  ac_cv_build_os=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+else
+  echo $ac_n "(cached) $ac_c" 1>&6
+fi
+
+echo "$ac_t""$ac_cv_build" 1>&6
+
+build=$ac_cv_build
+build_alias=$ac_cv_build_alias
+build_cpu=$ac_cv_build_cpu
+build_vendor=$ac_cv_build_vendor
+build_os=$ac_cv_build_os
+
+
 
-build=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $build_alias`
-build_cpu=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
-build_vendor=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
-build_os=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
-echo "$ac_t""$build" 1>&6
 
 if test $host != $build; then
   for ac_prog in gcc cc
@@ -1580,8 +1642,8 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1584: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_BUILD_CC'+set}'`\" = set"; then
+echo "configure:1646: checking for $ac_word" >&5
+if eval "test \"\${ac_cv_prog_BUILD_CC+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test -n "$BUILD_CC"; then
@@ -1612,13 +1674,13 @@ done
 fi
 
 echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
-echo "configure:1616: checking how to run the C preprocessor" >&5
+echo "configure:1678: checking how to run the C preprocessor" >&5
 # On Suns, sometimes $CPP names a directory.
 if test -n "$CPP" && test -d "$CPP"; then
   CPP=
 fi
 if test -z "$CPP"; then
-if eval "test \"`echo '$''{'ac_cv_prog_CPP'+set}'`\" = set"; then
+if eval "test \"\${ac_cv_prog_CPP+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
     # This must be in double quotes, not single quotes, because CPP may get
@@ -1627,13 +1689,13 @@ else
   # On the NeXT, cc -E runs the code through the compiler's parser,
   # not just through cpp.
   cat > conftest.$ac_ext <<EOF
-#line 1631 "configure"
+#line 1693 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1637: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1699: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -1644,13 +1706,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -E -traditional-cpp"
   cat > conftest.$ac_ext <<EOF
-#line 1648 "configure"
+#line 1710 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1654: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1716: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -1661,13 +1723,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -nologo -E"
   cat > conftest.$ac_ext <<EOF
-#line 1665 "configure"
+#line 1727 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1671: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1733: \"$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
   :
@@ -1710,8 +1772,8 @@ if test $RANLIB = ranlib; then
 # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
 set dummy ${ac_tool_prefix}ranlib; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1714: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
+echo "configure:1776: checking for $ac_word" >&5
+if eval "test \"\${ac_cv_prog_RANLIB+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test -n "$RANLIB"; then
@@ -1742,8 +1804,8 @@ if test -n "$ac_tool_prefix"; then
   # Extract the first word of "ranlib", so it can be a program name with args.
 set dummy ranlib; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1746: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
+echo "configure:1808: checking for $ac_word" >&5
+if eval "test \"\${ac_cv_prog_RANLIB+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test -n "$RANLIB"; then
@@ -1779,8 +1841,8 @@ fi
 
 # Determine whether we are using GNU binutils.
 echo $ac_n "checking whether $AS is GNU as""... $ac_c" 1>&6
-echo "configure:1783: checking whether $AS is GNU as" >&5
-if eval "test \"`echo '$''{'libc_cv_prog_as_gnu'+set}'`\" = set"; then
+echo "configure:1845: checking whether $AS is GNU as" >&5
+if eval "test \"\${libc_cv_prog_as_gnu+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   # Most GNU programs take a -v and spit out some text including
@@ -1798,8 +1860,8 @@ rm -f a.out
 gnu_as=$libc_cv_prog_as_gnu
 
 echo $ac_n "checking whether $LD is GNU ld""... $ac_c" 1>&6
-echo "configure:1802: checking whether $LD is GNU ld" >&5
-if eval "test \"`echo '$''{'libc_cv_prog_ld_gnu'+set}'`\" = set"; then
+echo "configure:1864: checking whether $LD is GNU ld" >&5
+if eval "test \"\${libc_cv_prog_ld_gnu+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   # Most GNU programs take a -v and spit out some text including
@@ -1818,8 +1880,8 @@ gnu_ld=$libc_cv_prog_ld_gnu
 # Extract the first word of "${ac_tool_prefix}mig", so it can be a program name with args.
 set dummy ${ac_tool_prefix}mig; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1822: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_MIG'+set}'`\" = set"; then
+echo "configure:1884: checking for $ac_word" >&5
+if eval "test \"\${ac_cv_prog_MIG+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test -n "$MIG"; then
@@ -1859,8 +1921,8 @@ fi
 
 # check if ranlib is necessary
 echo $ac_n "checking whether ranlib is necessary""... $ac_c" 1>&6
-echo "configure:1863: checking whether ranlib is necessary" >&5
-if eval "test \"`echo '$''{'libc_cv_ranlib_necessary'+set}'`\" = set"; then
+echo "configure:1925: checking whether ranlib is necessary" >&5
+if eval "test \"\${libc_cv_ranlib_necessary+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.c <<EOF
@@ -1893,7 +1955,7 @@ fi
 # - two terminals occur directly after each other
 # - the path contains an element with a dot in it
 echo $ac_n "checking LD_LIBRARY_PATH variable""... $ac_c" 1>&6
-echo "configure:1897: checking LD_LIBRARY_PATH variable" >&5
+echo "configure:1959: checking LD_LIBRARY_PATH variable" >&5
 case ${LD_LIBRARY_PATH} in
   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
     ld_library_path_setting="contains current directory"
@@ -1913,8 +1975,8 @@ fi
 # Extract the first word of "bash", so it can be a program name with args.
 set dummy bash; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1917: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_path_BASH'+set}'`\" = set"; then
+echo "configure:1979: checking for $ac_word" >&5
+if eval "test \"\${ac_cv_path_BASH+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   case "$BASH" in
@@ -1959,8 +2021,8 @@ if test "$BASH" = no; then
   # Extract the first word of "ksh", so it can be a program name with args.
 set dummy ksh; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1963: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_path_KSH'+set}'`\" = set"; then
+echo "configure:2025: checking for $ac_word" >&5
+if eval "test \"\${ac_cv_path_KSH+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   case "$KSH" in
@@ -2009,8 +2071,8 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2013: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_AWK'+set}'`\" = set"; then
+echo "configure:2075: checking for $ac_word" >&5
+if eval "test \"\${ac_cv_prog_AWK+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test -n "$AWK"; then
@@ -2041,8 +2103,8 @@ done
 # Extract the first word of "perl", so it can be a program name with args.
 set dummy perl; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2045: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_path_PERL'+set}'`\" = set"; then
+echo "configure:2107: checking for $ac_word" >&5
+if eval "test \"\${ac_cv_path_PERL+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   case "$PERL" in
@@ -2078,8 +2140,8 @@ fi
 # Extract the first word of "install-info", so it can be a program name with args.
 set dummy install-info; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:2082: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_path_INSTALL_INFO'+set}'`\" = set"; then
+echo "configure:2144: checking for $ac_word" >&5
+if eval "test \"\${ac_cv_path_INSTALL_INFO+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   case "$INSTALL_INFO" in
@@ -2114,8 +2176,8 @@ fi
 
 if test "$INSTALL_INFO" != "no"; then
 echo $ac_n "checking for old Debian install-info""... $ac_c" 1>&6
-echo "configure:2118: checking for old Debian install-info" >&5
-if eval "test \"`echo '$''{'libc_cv_old_debian_install_info'+set}'`\" = set"; then
+echo "configure:2180: checking for old Debian install-info" >&5
+if eval "test \"\${libc_cv_old_debian_install_info+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   mkdir conftest.d
@@ -2147,8 +2209,8 @@ fi
 
 
 echo $ac_n "checking for signed size_t type""... $ac_c" 1>&6
-echo "configure:2151: checking for signed size_t type" >&5
-if eval "test \"`echo '$''{'libc_cv_signed_size_t'+set}'`\" = set"; then
+echo "configure:2213: checking for signed size_t type" >&5
+if eval "test \"\${libc_cv_signed_size_t+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   echo '#include <stddef.h>
@@ -2171,12 +2233,12 @@ EOF
 fi
 
 echo $ac_n "checking for libc-friendly stddef.h""... $ac_c" 1>&6
-echo "configure:2175: checking for libc-friendly stddef.h" >&5
-if eval "test \"`echo '$''{'libc_cv_friendly_stddef'+set}'`\" = set"; then
+echo "configure:2237: checking for libc-friendly stddef.h" >&5
+if eval "test \"\${libc_cv_friendly_stddef+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2180 "configure"
+#line 2242 "configure"
 #include "confdefs.h"
 #define __need_size_t
 #define __need_wchar_t
@@ -2191,7 +2253,7 @@ size_t size; wchar_t wchar;
 if (&size == NULL || &wchar == NULL) abort ();
 ; return 0; }
 EOF
-if { (eval echo configure:2195: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2257: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   libc_cv_friendly_stddef=yes
 else
@@ -2210,8 +2272,8 @@ override stddef.h = # The installed <stddef.h> seems to be libc-friendly."
 fi
 
 echo $ac_n "checking whether we need to use -P to assemble .S files""... $ac_c" 1>&6
-echo "configure:2214: checking whether we need to use -P to assemble .S files" >&5
-if eval "test \"`echo '$''{'libc_cv_need_minus_P'+set}'`\" = set"; then
+echo "configure:2276: checking whether we need to use -P to assemble .S files" >&5
+if eval "test \"\${libc_cv_need_minus_P+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.S <<EOF
@@ -2233,8 +2295,8 @@ asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives."
 fi
 
 echo $ac_n "checking for assembler global-symbol directive""... $ac_c" 1>&6
-echo "configure:2237: checking for assembler global-symbol directive" >&5
-if eval "test \"`echo '$''{'libc_cv_asm_global_directive'+set}'`\" = set"; then
+echo "configure:2299: checking for assembler global-symbol directive" >&5
+if eval "test \"\${libc_cv_asm_global_directive+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   libc_cv_asm_global_directive=UNKNOWN
@@ -2263,8 +2325,8 @@ EOF
 fi
 
 echo $ac_n "checking for .set assembler directive""... $ac_c" 1>&6
-echo "configure:2267: checking for .set assembler directive" >&5
-if eval "test \"`echo '$''{'libc_cv_asm_set_directive'+set}'`\" = set"; then
+echo "configure:2329: checking for .set assembler directive" >&5
+if eval "test \"\${libc_cv_asm_set_directive+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.s <<EOF
@@ -2297,8 +2359,8 @@ EOF
 fi
 
 echo $ac_n "checking for .symver assembler directive""... $ac_c" 1>&6
-echo "configure:2301: checking for .symver assembler directive" >&5
-if eval "test \"`echo '$''{'libc_cv_asm_symver_directive'+set}'`\" = set"; then
+echo "configure:2363: checking for .symver assembler directive" >&5
+if eval "test \"\${libc_cv_asm_symver_directive+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.s <<EOF
@@ -2316,8 +2378,8 @@ fi
 
 echo "$ac_t""$libc_cv_asm_symver_directive" 1>&6
 echo $ac_n "checking for ld --version-script""... $ac_c" 1>&6
-echo "configure:2320: checking for ld --version-script" >&5
-if eval "test \"`echo '$''{'libc_cv_ld_version_script_option'+set}'`\" = set"; then
+echo "configure:2382: checking for ld --version-script" >&5
+if eval "test \"\${libc_cv_ld_version_script_option+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test $libc_cv_asm_symver_directive = yes; then
@@ -2339,7 +2401,7 @@ EOF
     if { ac_try='${CC-cc} $CFLAGS -shared -o conftest.so conftest.o
 					-nostartfiles -nostdlib
 					-Wl,--version-script,conftest.map
-		       1>&5'; { (eval echo configure:2343: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; };
+		       1>&5'; { (eval echo configure:2405: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; };
     then
       libc_cv_ld_version_script_option=yes
     else
@@ -2377,15 +2439,15 @@ if test $VERSIONING = no; then
 fi
 if test $elf = yes; then
   echo $ac_n "checking for .previous assembler directive""... $ac_c" 1>&6
-echo "configure:2381: checking for .previous assembler directive" >&5
-if eval "test \"`echo '$''{'libc_cv_asm_previous_directive'+set}'`\" = set"; then
+echo "configure:2443: checking for .previous assembler directive" >&5
+if eval "test \"\${libc_cv_asm_previous_directive+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
     cat > conftest.s <<EOF
 .section foo_section
 .previous
 EOF
-  if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:2389: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+  if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:2451: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
     libc_cv_asm_previous_directive=yes
   else
     libc_cv_asm_previous_directive=no
@@ -2401,15 +2463,15 @@ EOF
 
   else
     echo $ac_n "checking for .popsection assembler directive""... $ac_c" 1>&6
-echo "configure:2405: checking for .popsection assembler directive" >&5
-if eval "test \"`echo '$''{'libc_cv_asm_popsection_directive'+set}'`\" = set"; then
+echo "configure:2467: checking for .popsection assembler directive" >&5
+if eval "test \"\${libc_cv_asm_popsection_directive+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
       cat > conftest.s <<EOF
 .pushsection foo_section
 .popsection
 EOF
-    if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:2413: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+    if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:2475: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
       libc_cv_asm_popsection_directive=yes
     else
       libc_cv_asm_popsection_directive=no
@@ -2429,12 +2491,12 @@ fi
 
 if test $elf != yes; then
   echo $ac_n "checking for .init and .fini sections""... $ac_c" 1>&6
-echo "configure:2433: checking for .init and .fini sections" >&5
-if eval "test \"`echo '$''{'libc_cv_have_initfini'+set}'`\" = set"; then
+echo "configure:2495: checking for .init and .fini sections" >&5
+if eval "test \"\${libc_cv_have_initfini+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2438 "configure"
+#line 2500 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -2443,7 +2505,7 @@ asm (".section .init");
 				    asm (".text");
 ; return 0; }
 EOF
-if { (eval echo configure:2447: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2509: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   libc_cv_have_initfini=yes
 else
@@ -2471,19 +2533,19 @@ if test $elf = yes; then
 else
   if test $ac_cv_prog_cc_works = yes; then
     echo $ac_n "checking for _ prefix on C symbol names""... $ac_c" 1>&6
-echo "configure:2475: checking for _ prefix on C symbol names" >&5
-if eval "test \"`echo '$''{'libc_cv_asm_underscores'+set}'`\" = set"; then
+echo "configure:2537: checking for _ prefix on C symbol names" >&5
+if eval "test \"\${libc_cv_asm_underscores+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2480 "configure"
+#line 2542 "configure"
 #include "confdefs.h"
 asm ("_glibc_foobar:");
 int main() {
 glibc_foobar ();
 ; return 0; }
 EOF
-if { (eval echo configure:2487: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2549: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   libc_cv_asm_underscores=yes
 else
@@ -2498,17 +2560,17 @@ fi
 echo "$ac_t""$libc_cv_asm_underscores" 1>&6
   else
     echo $ac_n "checking for _ prefix on C symbol names""... $ac_c" 1>&6
-echo "configure:2502: checking for _ prefix on C symbol names" >&5
-if eval "test \"`echo '$''{'libc_cv_asm_underscores'+set}'`\" = set"; then
+echo "configure:2564: checking for _ prefix on C symbol names" >&5
+if eval "test \"\${libc_cv_asm_underscores+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2507 "configure"
+#line 2569 "configure"
 #include "confdefs.h"
 void underscore_test(void) {
 return; }
 EOF
-if { (eval echo configure:2512: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2574: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   if grep _underscore_test conftest* >/dev/null; then
     rm -f conftest*
     libc_cv_asm_underscores=yes
@@ -2540,8 +2602,8 @@ if test $elf = yes; then
 fi
 
 echo $ac_n "checking for assembler .weak directive""... $ac_c" 1>&6
-echo "configure:2544: checking for assembler .weak directive" >&5
-if eval "test \"`echo '$''{'libc_cv_asm_weak_directive'+set}'`\" = set"; then
+echo "configure:2606: checking for assembler .weak directive" >&5
+if eval "test \"\${libc_cv_asm_weak_directive+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.s <<EOF
@@ -2563,8 +2625,8 @@ echo "$ac_t""$libc_cv_asm_weak_directive" 1>&6
 
 if test $libc_cv_asm_weak_directive = no; then
   echo $ac_n "checking for assembler .weakext directive""... $ac_c" 1>&6
-echo "configure:2567: checking for assembler .weakext directive" >&5
-if eval "test \"`echo '$''{'libc_cv_asm_weakext_directive'+set}'`\" = set"; then
+echo "configure:2629: checking for assembler .weakext directive" >&5
+if eval "test \"\${libc_cv_asm_weakext_directive+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.s <<EOF
@@ -2601,8 +2663,8 @@ EOF
 fi
 
 echo $ac_n "checking for ld --no-whole-archive""... $ac_c" 1>&6
-echo "configure:2605: checking for ld --no-whole-archive" >&5
-if eval "test \"`echo '$''{'libc_cv_ld_no_whole_archive'+set}'`\" = set"; then
+echo "configure:2667: checking for ld --no-whole-archive" >&5
+if eval "test \"\${libc_cv_ld_no_whole_archive+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.c <<\EOF
@@ -2612,7 +2674,7 @@ __throw () {}
 EOF
 if { ac_try='${CC-cc} $CFLAGS
 			    -nostdlib -nostartfiles -Wl,--no-whole-archive
-			    -o conftest conftest.c 1>&5'; { (eval echo configure:2616: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+			    -o conftest conftest.c 1>&5'; { (eval echo configure:2678: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
   libc_cv_ld_no_whole_archive=yes
 else
   libc_cv_ld_no_whole_archive=no
@@ -2626,8 +2688,8 @@ if test $libc_cv_ld_no_whole_archive = yes; then
 fi
 
 echo $ac_n "checking for gcc -fexceptions""... $ac_c" 1>&6
-echo "configure:2630: checking for gcc -fexceptions" >&5
-if eval "test \"`echo '$''{'libc_cv_gcc_exceptions'+set}'`\" = set"; then
+echo "configure:2692: checking for gcc -fexceptions" >&5
+if eval "test \"\${libc_cv_gcc_exceptions+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.c <<\EOF
@@ -2637,7 +2699,7 @@ __throw () {}
 EOF
 if { ac_try='${CC-cc} $CFLAGS
 			    -nostdlib -nostartfiles -fexceptions
-			    -o conftest conftest.c 1>&5'; { (eval echo configure:2641: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+			    -o conftest conftest.c 1>&5'; { (eval echo configure:2703: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
   libc_cv_gcc_exceptions=yes
 else
   libc_cv_gcc_exceptions=no
@@ -2652,14 +2714,14 @@ fi
 
 if test "$base_machine" = alpha ; then
 echo $ac_n "checking for function ..ng prefix""... $ac_c" 1>&6
-echo "configure:2656: checking for function ..ng prefix" >&5
-if eval "test \"`echo '$''{'libc_cv_gcc_alpha_ng_prefix'+set}'`\" = set"; then
+echo "configure:2718: checking for function ..ng prefix" >&5
+if eval "test \"\${libc_cv_gcc_alpha_ng_prefix+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.c <<\EOF
 foo () { }
 EOF
-if { ac_try='${CC-cc} -S conftest.c -o - | fgrep "\$foo..ng" > /dev/null'; { (eval echo configure:2663: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; };
+if { ac_try='${CC-cc} -S conftest.c -o - | fgrep "\$foo..ng" > /dev/null'; { (eval echo configure:2725: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; };
 then
   libc_cv_gcc_alpha_ng_prefix=yes
 else
@@ -2686,19 +2748,19 @@ if test "$host_cpu" = powerpc ; then
 # Check for a bug present in at least versions 2.8.x of GCC
 # and versions 1.0.x of EGCS.
 echo $ac_n "checking whether clobbering cr0 causes problems""... $ac_c" 1>&6
-echo "configure:2690: checking whether clobbering cr0 causes problems" >&5
-if eval "test \"`echo '$''{'libc_cv_c_asmcr0_bug'+set}'`\" = set"; then
+echo "configure:2752: checking whether clobbering cr0 causes problems" >&5
+if eval "test \"\${libc_cv_c_asmcr0_bug+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2695 "configure"
+#line 2757 "configure"
 #include "confdefs.h"
 int tester(int x) { asm ("" : : : "cc"); return x & 123; }
 int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:2702: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2764: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   libc_cv_c_asmcr0_bug='no'
 else
@@ -2720,12 +2782,12 @@ fi
 fi
 
 echo $ac_n "checking for DWARF2 unwind info support""... $ac_c" 1>&6
-echo "configure:2724: checking for DWARF2 unwind info support" >&5
-if eval "test \"`echo '$''{'libc_cv_gcc_dwarf2_unwind_info'+set}'`\" = set"; then
+echo "configure:2786: checking for DWARF2 unwind info support" >&5
+if eval "test \"\${libc_cv_gcc_dwarf2_unwind_info+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.c <<EOF
-#line 2729 "configure"
+#line 2791 "configure"
 static char __EH_FRAME_BEGIN__;
 _start ()
 {
@@ -2752,7 +2814,7 @@ __bzero () {}
 EOF
 if { ac_try='${CC-cc} $CFLAGS -DCHECK__register_frame_info
 			    -nostdlib -nostartfiles
-			    -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2756: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+			    -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2818: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
   libc_cv_gcc_dwarf2_unwind_info=static
 else
   libc_cv_gcc_dwarf2_unwind_info=no
@@ -2760,7 +2822,7 @@ fi
 if test $libc_cv_gcc_dwarf2_unwind_info = no; then
   if { ac_try='${CC-cc} $CFLAGS -DCHECK__register_frame
 			      -nostdlib -nostartfiles
-			      -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2764: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+			      -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2826: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
     libc_cv_gcc_dwarf2_unwind_info=yes
   else
     libc_cv_gcc_dwarf2_unwind_info=no
@@ -2790,12 +2852,12 @@ EOF
 esac
 
 echo $ac_n "checking for __builtin_expect""... $ac_c" 1>&6
-echo "configure:2794: checking for __builtin_expect" >&5
-if eval "test \"`echo '$''{'libc_cv_gcc_builtin_expect'+set}'`\" = set"; then
+echo "configure:2856: checking for __builtin_expect" >&5
+if eval "test \"\${libc_cv_gcc_builtin_expect+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.c <<EOF
-#line 2799 "configure"
+#line 2861 "configure"
 int foo (int a)
 {
   a = __builtin_expect (a, 10);
@@ -2803,7 +2865,7 @@ int foo (int a)
 }
 EOF
 if { ac_try='${CC-cc} $CFLAGS -nostdlib -nostartfiles
-			    -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2807: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+			    -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2869: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
   libc_cv_gcc_builtin_expect=yes
 else
   libc_cv_gcc_builtin_expect=no
@@ -2819,6 +2881,42 @@ EOF
 
 fi
 
+echo $ac_n "checking for local label subtraction""... $ac_c" 1>&6
+echo "configure:2886: checking for local label subtraction" >&5
+if eval "test \"\${libc_cv_gcc_subtract_local_labels+set}\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.c <<EOF
+#line 2891 "configure"
+int foo (int a)
+{
+  static const int ar[] = { &&l1 - &&l1, &&l2 - &&l1 };
+  void *p = &&l1 + ar[a];
+  goto *p;
+ l1:
+  return 1;
+ l2:
+  return 2;
+}
+EOF
+if { ac_try='${CC-cc} $CFLAGS -nostdlib -nostartfiles
+			    -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2904: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+  libc_cv_gcc_subtract_local_labels=yes
+else
+  libc_cv_gcc_subtract_local_labels=no
+fi
+rm -f conftest*
+fi
+
+echo "$ac_t""$libc_cv_gcc_subtract_local_labels" 1>&6
+if test "$libc_cv_gcc_subtract_local_labels" = yes; then
+  cat >> confdefs.h <<\EOF
+#define HAVE_SUBTRACT_LOCAL_LABELS 1
+EOF
+
+fi
+
+
 ### End of automated tests.
 ### Now run sysdeps configure fragments.
 
@@ -2864,8 +2962,8 @@ if test "$uname" = "sysdeps/generic"; then
   fi
 
   echo $ac_n "checking OS release for uname""... $ac_c" 1>&6
-echo "configure:2868: checking OS release for uname" >&5
-if eval "test \"`echo '$''{'libc_cv_uname_release'+set}'`\" = set"; then
+echo "configure:2966: checking OS release for uname" >&5
+if eval "test \"\${libc_cv_uname_release+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
     kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'`
@@ -2886,8 +2984,8 @@ echo "$ac_t""$libc_cv_uname_release" 1>&6
   uname_release="$libc_cv_uname_release"
 
   echo $ac_n "checking OS version for uname""... $ac_c" 1>&6
-echo "configure:2890: checking OS version for uname" >&5
-if eval "test \"`echo '$''{'libc_cv_uname_version'+set}'`\" = set"; then
+echo "configure:2988: checking OS version for uname" >&5
+if eval "test \"\${libc_cv_uname_version+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
     kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'`
@@ -2908,7 +3006,7 @@ else
 fi
 
 echo $ac_n "checking stdio selection""... $ac_c" 1>&6
-echo "configure:2912: checking stdio selection" >&5
+echo "configure:3010: checking stdio selection" >&5
 
 case $stdio in
 libio) cat >> confdefs.h <<\EOF
@@ -2922,7 +3020,7 @@ echo "$ac_t""$stdio" 1>&6
 # Test for old glibc 2.0.x headers so that they can be removed properly
 # Search only in includedir.
 echo $ac_n "checking for old glibc 2.0.x headers""... $ac_c" 1>&6
-echo "configure:2926: checking for old glibc 2.0.x headers" >&5
+echo "configure:3024: checking for old glibc 2.0.x headers" >&5
 if eval test -f "${includedir}/elfclass.h" -a -f "${includedir}/fcntlbits.h"
 then
   old_glibc_headers=yes
@@ -2976,8 +3074,8 @@ if test $shared = default; then
 fi
 
 echo $ac_n "checking whether -fPIC is default""... $ac_c" 1>&6
-echo "configure:2980: checking whether -fPIC is default" >&5
-if eval "test \"`echo '$''{'pic_default'+set}'`\" = set"; then
+echo "configure:3078: checking whether -fPIC is default" >&5
+if eval "test \"\${pic_default+set}\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   pic_default=yes
@@ -3114,7 +3212,7 @@ do
     echo "running \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion"
     exec \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion ;;
   -version | --version | --versio | --versi | --vers | --ver | --ve | --v)
-    echo "$CONFIG_STATUS generated by autoconf version 2.13"
+    echo "$CONFIG_STATUS generated by autoconf version 2.14.1"
     exit 0 ;;
   -help | --help | --hel | --he | --h)
     echo "\$ac_cs_usage"; exit 0 ;;
@@ -3491,7 +3589,7 @@ exit 0
 EOF
 chmod +x $CONFIG_STATUS
 rm -fr confdefs* $ac_clean_files
-test "$no_create" = yes || ${CONFIG_SHELL-/bin/sh} $CONFIG_STATUS || exit 1
+test "$no_create" = yes || $SHELL $CONFIG_STATUS || exit 1
 
 if test "$no_recursion" != yes; then
 
@@ -3555,7 +3653,7 @@ if test "$no_recursion" != yes; then
 
     # Check for guested configure; otherwise get Cygnus style configure.
     if test -f $ac_sub_srcdir/configure; then
-      ac_sub_configure=$ac_sub_srcdir/configure
+      ac_sub_configure="$SHELL $ac_sub_srcdir/configure"
     elif test -f $ac_sub_srcdir/configure.in; then
       ac_sub_configure=$ac_configure
     else
@@ -3577,9 +3675,9 @@ if test "$no_recursion" != yes; then
         *) INSTALL="$ac_dots$ac_given_INSTALL" ;;
         esac
 
-      echo "running ${CONFIG_SHELL-/bin/sh} $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_sub_srcdir"
+      echo "running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_sub_srcdir"
       # The eval makes quoting arguments work.
-      if eval ${CONFIG_SHELL-/bin/sh} $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_sub_srcdir
+      if eval $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_sub_srcdir
       then :
       else
         { echo "configure: error: $ac_sub_configure failed for $ac_config_dir" 1>&2; exit 1; }
diff --git a/configure.in b/configure.in
index e6b2dacf1d..6203266658 100644
--- a/configure.in
+++ b/configure.in
@@ -1050,6 +1050,36 @@ if test "$libc_cv_gcc_builtin_expect" = yes; then
   AC_DEFINE(HAVE_BUILTIN_EXPECT)
 fi
 
+dnl Check whether the compiler supports subtraction of local labels.
+AC_CACHE_CHECK(for local label subtraction, libc_cv_gcc_subtract_local_labels,
+[cat > conftest.c <<EOF
+changequote(,)dnl
+#line __oline__ "configure"
+int foo (int a)
+{
+  static const int ar[] = { &&l1 - &&l1, &&l2 - &&l1 };
+  void *p = &&l1 + ar[a];
+  goto *p;
+ l1:
+  return 1;
+ l2:
+  return 2;
+}
+changequote([,])dnl
+EOF
+dnl No \ in command here because it ends up inside ''.
+if AC_TRY_COMMAND([${CC-cc} $CFLAGS -nostdlib -nostartfiles
+			    -o conftest conftest.c -lgcc >&AC_FD_CC]); then
+  libc_cv_gcc_subtract_local_labels=yes
+else
+  libc_cv_gcc_subtract_local_labels=no
+fi
+rm -f conftest*])
+if test "$libc_cv_gcc_subtract_local_labels" = yes; then
+  AC_DEFINE(HAVE_SUBTRACT_LOCAL_LABELS)
+fi
+
+
 ### End of automated tests.
 ### Now run sysdeps configure fragments.
 
diff --git a/stdio-common/vfprintf.c b/stdio-common/vfprintf.c
index 902a70df40..742213282f 100644
--- a/stdio-common/vfprintf.c
+++ b/stdio-common/vfprintf.c
@@ -271,7 +271,24 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap)
 
 #define NOT_IN_JUMP_RANGE(Ch) ((Ch) < L_(' ') || (Ch) > L_('z'))
 #define CHAR_CLASS(Ch) (jump_table[(INT_T) (Ch) - L_(' ')])
-#define JUMP(ChExpr, table)						      \
+#if defined HAVE_SUBTRACT_LOCAL_LABELS && defined PIC
+  /* 'int' is enough and it saves some space on 64 bit systems.  */
+# define JUMP_TABLE_TYPE const int
+# define JUMP(ChExpr, table)						      \
+      do								      \
+	{								      \
+	  int offset;							      \
+	  void *ptr;							      \
+	  spec = (ChExpr);						      \
+	  offset = NOT_IN_JUMP_RANGE (spec) ? REF (form_unknown)	      \
+	    : table[CHAR_CLASS (spec)];					      \
+	  ptr = &&do_form_unknown + offset;				      \
+	  goto *ptr;							      \
+	}								      \
+      while (0)
+#else
+# define JUMP_TABLE_TYPE const void *const
+# define JUMP(ChExpr, table)						      \
       do								      \
 	{								      \
 	  const void *ptr;						      \
@@ -281,10 +298,11 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap)
 	  goto *ptr;							      \
 	}								      \
       while (0)
+#endif
 
 #define STEP0_3_TABLE							      \
     /* Step 0: at the beginning.  */					      \
-    static const void *step0_jumps[29] =				      \
+    static JUMP_TABLE_TYPE step0_jumps[29] =				      \
     {									      \
       REF (form_unknown),						      \
       REF (flag_space),		/* for ' ' */				      \
@@ -317,7 +335,7 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap)
       REF (mod_intmax_t),       /* for 'j' */				      \
     };									      \
     /* Step 1: after processing width.  */				      \
-    static const void *step1_jumps[29] =				      \
+    static JUMP_TABLE_TYPE step1_jumps[29] =				      \
     {									      \
       REF (form_unknown),						      \
       REF (form_unknown),	/* for ' ' */				      \
@@ -350,7 +368,7 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap)
       REF (mod_intmax_t)        /* for 'j' */				      \
     };									      \
     /* Step 2: after processing precision.  */				      \
-    static const void *step2_jumps[29] =				      \
+    static JUMP_TABLE_TYPE step2_jumps[29] =				      \
     {									      \
       REF (form_unknown),						      \
       REF (form_unknown),	/* for ' ' */				      \
@@ -383,7 +401,7 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap)
       REF (mod_intmax_t)        /* for 'j' */				      \
     };									      \
     /* Step 3a: after processing first 'h' modifier.  */		      \
-    static const void *step3a_jumps[29] =				      \
+    static JUMP_TABLE_TYPE step3a_jumps[29] =				      \
     {									      \
       REF (form_unknown),						      \
       REF (form_unknown),	/* for ' ' */				      \
@@ -416,7 +434,7 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap)
       REF (form_unknown)        /* for 'j' */				      \
     };									      \
     /* Step 3b: after processing first 'l' modifier.  */		      \
-    static const void *step3b_jumps[29] =				      \
+    static JUMP_TABLE_TYPE step3b_jumps[29] =				      \
     {									      \
       REF (form_unknown),						      \
       REF (form_unknown),	/* for ' ' */				      \
@@ -451,7 +469,7 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap)
 
 #define STEP4_TABLE							      \
     /* Step 4: processing format specifier.  */				      \
-    static const void *step4_jumps[29] =				      \
+    static JUMP_TABLE_TYPE step4_jumps[29] =				      \
     {									      \
       REF (form_unknown),						      \
       REF (form_unknown),	/* for ' ' */				      \
@@ -1179,7 +1197,11 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap)
   /* Process whole format string.  */
   do
     {
-#define REF(Name) &&do_##Name
+#if defined HAVE_SUBTRACT_LOCAL_LABELS && defined PIC
+# define REF(Name) &&do_##Name - &&do_form_unknown
+#else
+# define REF(Name) &&do_##Name
+#endif
 #define LABEL(Name) do_##Name
       STEP0_3_TABLE;
       STEP4_TABLE;
@@ -1560,7 +1582,11 @@ do_positional:
     for (; (size_t) nspecs_done < nspecs; ++nspecs_done)
       {
 #undef REF
-#define REF(Name) &&do2_##Name
+#if defined HAVE_SUBTRACT_LOCAL_LABELS && defined PIC
+# define REF(Name) &&do2_##Name - &&do_form_unknown
+#else
+# define REF(Name) &&do2_##Name
+#endif
 #undef LABEL
 #define LABEL(Name) do2_##Name
 	STEP4_TABLE;