Merge branch 'baseline' into refs/top-bases/tschwinge/Roger_Whittaker

1 files changed, 568 insertions, 617 deletions

diff --git a/configure b/configure
index ee2ec0d14b..387781be33 100755
--- a/configure
+++ b/configure
@@ -1,13 +1,11 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.68 for GNU C Library (see version.h).
+# Generated by GNU Autoconf 2.69 for GNU C Library (see version.h).
 #
 # Report bugs to <http://sourceware.org/bugzilla/>.
 #
 #
-# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
-# 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software
-# Foundation, Inc.
+# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
 #
 #
 # This configure script is free software; the Free Software Foundation
@@ -136,6 +134,31 @@ export LANGUAGE
 # CDPATH.
 (unset CDPATH) >/dev/null 2>&1 && unset CDPATH
 
+# Use a proper internal environment variable to ensure we don't fall
+  # into an infinite loop, continuously re-executing ourselves.
+  if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then
+    _as_can_reexec=no; export _as_can_reexec;
+    # We cannot yet assume a decent shell, so we have to provide a
+# neutralization value for shells without unset; and this also
+# works around shells that cannot unset nonexistent variables.
+# Preserve -v and -x to the replacement shell.
+BASH_ENV=/dev/null
+ENV=/dev/null
+(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+case $- in # ((((
+  *v*x* | *x*v* ) as_opts=-vx ;;
+  *v* ) as_opts=-v ;;
+  *x* ) as_opts=-x ;;
+  * ) as_opts= ;;
+esac
+exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+# Admittedly, this is quite paranoid, since all the known shells bail
+# out after a failed `exec'.
+$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
+as_fn_exit 255
+  fi
+  # We don't want this to propagate to other subprocesses.
+          { _as_can_reexec=; unset _as_can_reexec;}
 if test "x$CONFIG_SHELL" = x; then
   as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then :
   emulate sh
@@ -169,7 +192,8 @@ if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then :
 else
   exitcode=1; echo positional parameters were not saved.
 fi
-test x\$exitcode = x0 || exit 1"
+test x\$exitcode = x0 || exit 1
+test -x / || exit 1"
   as_suggested="  as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO
   as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO
   eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" &&
@@ -214,21 +238,25 @@ IFS=$as_save_IFS
 
 
       if test "x$CONFIG_SHELL" != x; then :
-  # We cannot yet assume a decent shell, so we have to provide a
-	# neutralization value for shells without unset; and this also
-	# works around shells that cannot unset nonexistent variables.
-	# Preserve -v and -x to the replacement shell.
-	BASH_ENV=/dev/null
-	ENV=/dev/null
-	(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
-	export CONFIG_SHELL
-	case $- in # ((((
-	  *v*x* | *x*v* ) as_opts=-vx ;;
-	  *v* ) as_opts=-v ;;
-	  *x* ) as_opts=-x ;;
-	  * ) as_opts= ;;
-	esac
-	exec "$CONFIG_SHELL" $as_opts "$as_myself" ${1+"$@"}
+  export CONFIG_SHELL
+             # We cannot yet assume a decent shell, so we have to provide a
+# neutralization value for shells without unset; and this also
+# works around shells that cannot unset nonexistent variables.
+# Preserve -v and -x to the replacement shell.
+BASH_ENV=/dev/null
+ENV=/dev/null
+(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+case $- in # ((((
+  *v*x* | *x*v* ) as_opts=-vx ;;
+  *v* ) as_opts=-v ;;
+  *x* ) as_opts=-x ;;
+  * ) as_opts= ;;
+esac
+exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+# Admittedly, this is quite paranoid, since all the known shells bail
+# out after a failed `exec'.
+$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
+exit 255
 fi
 
     if test x$as_have_required = xno; then :
@@ -331,6 +359,14 @@ $as_echo X"$as_dir" |
 
 
 } # as_fn_mkdir_p
+
+# as_fn_executable_p FILE
+# -----------------------
+# Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+  test -f "$1" && test -x "$1"
+} # as_fn_executable_p
 # as_fn_append VAR VALUE
 # ----------------------
 # Append the text in VALUE to the end of the definition contained in VAR. Take
@@ -452,6 +488,10 @@ as_cr_alnum=$as_cr_Letters$as_cr_digits
   chmod +x "$as_me.lineno" ||
     { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
 
+  # If we had to re-execute with $CONFIG_SHELL, we're ensured to have
+  # already done that, so ensure we don't try to do so again and fall
+  # in an infinite loop.  This has already happened in practice.
+  _as_can_reexec=no; export _as_can_reexec
   # Don't try to exec as it changes $[0], causing all sort of problems
   # (the dirname of $[0] is not the place where we might find the
   # original and so on.  Autoconf is especially sensitive to this).
@@ -486,16 +526,16 @@ if (echo >conf$$.file) 2>/dev/null; then
     # ... but there are two gotchas:
     # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
     # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
-    # In both cases, we have to default to `cp -p'.
+    # In both cases, we have to default to `cp -pR'.
     ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
-      as_ln_s='cp -p'
+      as_ln_s='cp -pR'
   elif ln conf$$.file conf$$ 2>/dev/null; then
     as_ln_s=ln
   else
-    as_ln_s='cp -p'
+    as_ln_s='cp -pR'
   fi
 else
-  as_ln_s='cp -p'
+  as_ln_s='cp -pR'
 fi
 rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
 rmdir conf$$.dir 2>/dev/null
@@ -507,28 +547,8 @@ else
   as_mkdir_p=false
 fi
 
-if test -x / >/dev/null 2>&1; then
-  as_test_x='test -x'
-else
-  if ls -dL / >/dev/null 2>&1; then
-    as_ls_L_option=L
-  else
-    as_ls_L_option=
-  fi
-  as_test_x='
-    eval sh -c '\''
-      if test -d "$1"; then
-	test -d "$1/.";
-      else
-	case $1 in #(
-	-*)set "./$1";;
-	esac;
-	case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
-	???[sx]*):;;*)false;;esac;fi
-    '\'' sh
-  '
-fi
-as_executable_p=$as_test_x
+as_test_x='test -x'
+as_executable_p=as_fn_executable_p
 
 # Sed expression to map a string onto a valid CPP name.
 as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
@@ -576,6 +596,7 @@ mach_interface_list
 DEFINES
 static_nss
 profile
+libc_cv_pie_default
 libc_cv_pic_default
 shared
 static
@@ -591,6 +612,7 @@ libc_cv_slibdir
 old_glibc_headers
 use_nscd
 libc_cv_gcc_unwind_find_fde
+libc_extra_cppflags
 libc_extra_cflags
 CPPUNDEFS
 sizeof_long_double
@@ -613,12 +635,10 @@ libc_cv_z_combreloc
 ASFLAGS_config
 libc_cv_Bgroup
 libc_cv_cc_with_libunwind
+libc_cv_protected_data
 BISON
 INSTALL_INFO
 PERL
-libc_cv_have_ksh
-KSH
-libc_cv_have_bash2
 BASH_SHELL
 libc_cv_gcc_static_libgcc
 CXX_SYSINCLUDES
@@ -650,18 +670,19 @@ build_pt_chown
 build_nscd
 link_obsolete_rpc
 libc_cv_nss_crypt
+enable_werror
 all_warnings
 force_install
 bindnow
+enable_lock_elision
 hardcoded_path_in_tests
-oldest_abi
 use_default_link
 sysheaders
 with_fp
-READELF
 ac_ct_CXX
 CXXFLAGS
 CXX
+READELF
 CPP
 cross_compiling
 BUILD_CC
@@ -738,7 +759,6 @@ with_default_link
 enable_sanity_checks
 enable_shared
 enable_profile
-enable_oldest_abi
 enable_hardcoded_path_in_tests
 enable_stackguard_randomization
 enable_lock_elision
@@ -750,6 +770,7 @@ enable_force_install
 enable_maintainer_mode
 enable_kernel
 enable_all_warnings
+enable_werror
 enable_multi_arch
 enable_nss_crypt
 enable_obsolete_rpc
@@ -757,6 +778,7 @@ enable_systemtap
 enable_build_nscd
 enable_nscd
 enable_pt_chown
+enable_mathvec
 with_cpu
 '
       ac_precious_vars='build_alias
@@ -1227,8 +1249,6 @@ target=$target_alias
 if test "x$host_alias" != x; then
   if test "x$build_alias" = x; then
     cross_compiling=maybe
-    $as_echo "$as_me: WARNING: if you wanted to set the --build type, don't use --host.
-    If a cross compiler is detected then cross compile mode will be used" >&2
   elif test "x$build_alias" != "x$host_alias"; then
     cross_compiling=yes
   fi
@@ -1391,8 +1411,6 @@ Optional Features:
                           in special situations) [default=yes]
   --enable-shared         build shared library [default=yes if GNU ld]
   --enable-profile        build profiled library [default=no]
-  --enable-oldest-abi=ABI configure the oldest ABI supported [e.g. 2.2]
-                          [default=glibc default]
   --enable-hardcoded-path-in-tests
                           hardcode newly built glibc path in tests
                           [default=no]
@@ -1415,6 +1433,7 @@ Optional Features:
   --enable-kernel=VERSION compile for compatibility with kernel not older than
                           VERSION
   --enable-all-warnings   enable all useful warnings gcc can issue
+  --disable-werror        do not build with -Werror
   --enable-multi-arch     enable single DSO with optimizations for multiple
                           architectures
   --enable-nss-crypt      enable libcrypt to use nss
@@ -1424,6 +1443,8 @@ Optional Features:
   --disable-build-nscd    disable building and installing the nscd daemon
   --disable-nscd          library functions will not contact the nscd daemon
   --enable-pt_chown       Enable building and installing pt_chown
+  --enable-mathvec        Enable building and installing mathvec [default
+                          depends on architecture]
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -1522,9 +1543,9 @@ test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
 GNU C Library configure (see version.h)
-generated by GNU Autoconf 2.68
+generated by GNU Autoconf 2.69
 
-Copyright (C) 2010 Free Software Foundation, Inc.
+Copyright (C) 2012 Free Software Foundation, Inc.
 This configure script is free software; the Free Software Foundation
 gives unlimited permission to copy, distribute and modify it.
 _ACEOF
@@ -1611,6 +1632,52 @@ fi
 
 } # ac_fn_cxx_try_compile
 
+# ac_fn_cxx_try_link LINENO
+# -------------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded.
+ac_fn_cxx_try_link ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext conftest$ac_exeext
+  if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_cxx_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest$ac_exeext && {
+	 test "$cross_compiling" = yes ||
+	 test -x conftest$ac_exeext
+       }; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  # Delete the IPA/IPO (Inter Procedural Analysis/Optimization) information
+  # created by the PGI compiler (conftest_ipa8_conftest.oo), as it would
+  # interfere with the next link command; also delete a directory that is
+  # left behind by Apple's compiler.  We do this before executing the actions.
+  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_cxx_try_link
+
 # ac_fn_c_try_link LINENO
 # -----------------------
 # Try to link conftest.$ac_ext, and return whether this succeeded.
@@ -1638,7 +1705,7 @@ $as_echo "$ac_try_echo"; } >&5
 	 test ! -s conftest.err
        } && test -s conftest$ac_exeext && {
 	 test "$cross_compiling" = yes ||
-	 $as_test_x conftest$ac_exeext
+	 test -x conftest$ac_exeext
        }; then :
   ac_retval=0
 else
@@ -1716,7 +1783,8 @@ int
 main ()
 {
 static int test_array [1 - 2 * !(($2) >= 0)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
 
   ;
   return 0;
@@ -1732,7 +1800,8 @@ int
 main ()
 {
 static int test_array [1 - 2 * !(($2) <= $ac_mid)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
 
   ;
   return 0;
@@ -1758,7 +1827,8 @@ int
 main ()
 {
 static int test_array [1 - 2 * !(($2) < 0)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
 
   ;
   return 0;
@@ -1774,7 +1844,8 @@ int
 main ()
 {
 static int test_array [1 - 2 * !(($2) >= $ac_mid)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
 
   ;
   return 0;
@@ -1808,7 +1879,8 @@ int
 main ()
 {
 static int test_array [1 - 2 * !(($2) <= $ac_mid)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
 
   ;
   return 0;
@@ -1881,7 +1953,7 @@ This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
 It was created by GNU C Library $as_me (see version.h), which was
-generated by GNU Autoconf 2.68.  Invocation command line was
+generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
 
@@ -2432,7 +2504,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_CC="${ac_tool_prefix}gcc"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -2472,7 +2544,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_ac_ct_CC="gcc"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -2525,7 +2597,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_CC="${ac_tool_prefix}cc"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -2566,7 +2638,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
        ac_prog_rejected=yes
        continue
@@ -2624,7 +2696,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -2668,7 +2740,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_ac_ct_CC="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -2931,7 +3003,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_BUILD_CC="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -2965,6 +3037,99 @@ if test -z "$CPP"; then
   CPP="$CC -E"
 fi
 
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}readelf", so it can be a program name with args.
+set dummy ${ac_tool_prefix}readelf; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_READELF+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$READELF"; then
+  ac_cv_prog_READELF="$READELF" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_READELF="${ac_tool_prefix}readelf"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+READELF=$ac_cv_prog_READELF
+if test -n "$READELF"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $READELF" >&5
+$as_echo "$READELF" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_READELF"; then
+  ac_ct_READELF=$READELF
+  # Extract the first word of "readelf", so it can be a program name with args.
+set dummy readelf; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_READELF+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_READELF"; then
+  ac_cv_prog_ac_ct_READELF="$ac_ct_READELF" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_READELF="readelf"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_READELF=$ac_cv_prog_ac_ct_READELF
+if test -n "$ac_ct_READELF"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_READELF" >&5
+$as_echo "$ac_ct_READELF" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_READELF" = x; then
+    READELF="false"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    READELF=$ac_ct_READELF
+  fi
+else
+  READELF="$ac_cv_prog_READELF"
+fi
+
+
 # We need the C++ compiler only for testing.
 ac_ext=cpp
 ac_cpp='$CXXCPP $CPPFLAGS'
@@ -2994,7 +3159,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_CXX="$ac_tool_prefix$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -3038,7 +3203,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_ac_ct_CXX="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -3223,98 +3388,49 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-if test -n "$ac_tool_prefix"; then
-  # Extract the first word of "${ac_tool_prefix}readelf", so it can be a program name with args.
-set dummy ${ac_tool_prefix}readelf; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_READELF+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test -n "$READELF"; then
-  ac_cv_prog_READELF="$READELF" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
-    ac_cv_prog_READELF="${ac_tool_prefix}readelf"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
+# It's useless to us if it can't link programs (e.g. missing -lstdc++).
 
-fi
-fi
-READELF=$ac_cv_prog_READELF
-if test -n "$READELF"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $READELF" >&5
-$as_echo "$READELF" >&6; }
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CXX can link programs" >&5
+$as_echo_n "checking whether $CXX can link programs... " >&6; }
+if ${libc_cv_cxx_link_ok+:} false; then :
+  $as_echo_n "(cached) " >&6
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
+  ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
 
-fi
-if test -z "$ac_cv_prog_READELF"; then
-  ac_ct_READELF=$READELF
-  # Extract the first word of "readelf", so it can be a program name with args.
-set dummy readelf; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_READELF+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test -n "$ac_ct_READELF"; then
-  ac_cv_prog_ac_ct_READELF="$ac_ct_READELF" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
-    ac_cv_prog_ac_ct_READELF="readelf"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
+int
+main ()
+{
 
-fi
-fi
-ac_ct_READELF=$ac_cv_prog_ac_ct_READELF
-if test -n "$ac_ct_READELF"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_READELF" >&5
-$as_echo "$ac_ct_READELF" >&6; }
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_link "$LINENO"; then :
+  libc_cv_cxx_link_ok=yes
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  libc_cv_cxx_link_ok=no
 fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-  if test "x$ac_ct_READELF" = x; then
-    READELF="false"
-  else
-    case $cross_compiling:$ac_tool_warned in
-yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
-ac_tool_warned=yes ;;
-esac
-    READELF=$ac_ct_READELF
-  fi
-else
-  READELF="$ac_cv_prog_READELF"
 fi
-
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cxx_link_ok" >&5
+$as_echo "$libc_cv_cxx_link_ok" >&6; }
+if test $libc_cv_cxx_link_ok != yes; then :
+  CXX=
+fi
 
 if test "`cd $srcdir; /bin/pwd`" = "`/bin/pwd`"; then
   as_fn_error $? "you must configure in a separate build directory" "$LINENO" 5
@@ -3434,23 +3550,6 @@ else
 fi
 
 
-# Check whether --enable-oldest-abi was given.
-if test "${enable_oldest_abi+set}" = set; then :
-  enableval=$enable_oldest_abi; oldest_abi=$enableval
-else
-  oldest_abi=no
-fi
-
-if test "$oldest_abi" = yes || test "$oldest_abi" = no; then
-  oldest_abi=default
-else
-  cat >>confdefs.h <<_ACEOF
-#define GLIBC_OLDEST_ABI "$oldest_abi"
-_ACEOF
-
-fi
-
-
 # Check whether --enable-hardcoded-path-in-tests was given.
 if test "${enable_hardcoded_path_in_tests+set}" = set; then :
   enableval=$enable_hardcoded_path_in_tests; hardcoded_path_in_tests=$enableval
@@ -3479,6 +3578,7 @@ else
   enable_lock_elision=no
 fi
 
+
 if test "$enable_lock_elision" = yes ; then
   $as_echo "#define ENABLE_LOCK_ELISION 1" >>confdefs.h
 
@@ -3564,6 +3664,15 @@ fi
 
 
 
+# Check whether --enable-werror was given.
+if test "${enable_werror+set}" = set; then :
+  enableval=$enable_werror; enable_werror=$enableval
+else
+  enable_werror=yes
+fi
+
+
+
 # Check whether --enable-multi-arch was given.
 if test "${enable_multi_arch+set}" = set; then :
   enableval=$enable_multi_arch; multi_arch=$enableval
@@ -3729,11 +3838,10 @@ if test "$build_pt_chown" = yes; then
 
 fi
 
-# The way shlib-versions is used to generate soversions.mk uses a
-# fairly simplistic model for name recognition that can't distinguish
-# i486-pc-linux-gnu fully from i486-pc-gnu.  So we mutate a $host_os
-# of `gnu*' here to be `gnu-gnu*' just so that shlib-versions can
-# tell.  This doesn't get used much beyond that, so it's fairly safe.
+# The abi-tags file uses a fairly simplistic model for name recognition that
+# can't distinguish i486-pc-linux-gnu fully from i486-pc-gnu.  So we mutate a
+# $host_os of `gnu*' here to be `gnu-gnu*' just so that it can tell.
+# This doesn't get used much beyond that, so it's fairly safe.
 case "$host_os" in
 linux*)
   ;;
@@ -3742,6 +3850,14 @@ gnu*)
   ;;
 esac
 
+# Check whether --enable-mathvec was given.
+if test "${enable_mathvec+set}" = set; then :
+  enableval=$enable_mathvec; build_mathvec=$enableval
+else
+  build_mathvec=notset
+fi
+
+
 # We keep the original values in `$config_*' and never modify them, so we
 # can write them unchanged into config.make.  Everything else uses
 # $machine, $vendor, and $os, and changes them whenever convenient.
@@ -3762,19 +3878,6 @@ vendor=$config_vendor
 os=$config_os
 base_os=''
 
-# config.guess on some IBM machines says `rs6000' instead of `powerpc'.
-# Unify this here.
-if test "$machine" = rs6000; then
-  machine="powerpc"
-fi
-
-# Braindead PowerPC box with absolutely no FPU.
-case "$machine-$host_os" in
-  powerpc*-*soft)
-    with_fp=no
-    ;;
-esac
-
 submachine=
 
 # Check whether --with-cpu was given.
@@ -3788,6 +3891,10 @@ if test "${with_cpu+set}" = set; then :
 fi
 
 
+# An preconfigure script can set this when it wants to disable the sanity
+# check below.
+libc_config_ok=no
+
 if frags=`ls -d $srcdir/sysdeps/*/preconfigure 2> /dev/null`
 then
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sysdeps preconfigure fragments" >&5
@@ -3801,9 +3908,6 @@ $as_echo_n "checking for sysdeps preconfigure fragments... " >&6; }
 $as_echo "" >&6; }
 fi
 
-# An add-on can set this when it wants to disable the sanity check below.
-libc_config_ok=no
-
 subdirs="$subdirs "
 
 
@@ -3966,45 +4070,9 @@ if test -z "$enable_hacker_mode" && test x"$libc_config_ok" != xyes; then
   esac
 fi
 
-# Expand the configuration machine name into a subdirectory by architecture
-# type and particular chip.  If an add-on configure fragment already set
-# base_machine, we don't change it.
-test -n "$base_machine" || case "$machine" in
-i[4567]86)	base_machine=i386 machine=i386/$machine ;;
-powerpc64*)	base_machine=powerpc machine=powerpc/powerpc64 ;;
-powerpc*)	base_machine=powerpc machine=powerpc/powerpc32 ;;
-s390)           base_machine=s390 machine=s390/s390-32 ;;
-s390x)          base_machine=s390 machine=s390/s390-64 ;;
-sh3*)		base_machine=sh machine=sh/sh3 ;;
-sh4*)		base_machine=sh machine=sh/sh4 ;;
-sparc | sparcv[67])
-		base_machine=sparc machine=sparc/sparc32 ;;
-sparcv8 | supersparc | hypersparc)
-		base_machine=sparc machine=sparc/sparc32/sparcv8 ;;
-sparcv8plus | sparcv8plusa | sparcv9)
-		base_machine=sparc machine=sparc/sparc32/sparcv9 ;;
-sparcv8plusb | sparcv9b)
-		base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9b ;;
-sparcv9v)
-		base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9v ;;
-sparcv9v2)
-		base_machine=sparc machine=sparc/sparc32/sparcv9/sparcv9v2 ;;
-sparc64)
-		base_machine=sparc machine=sparc/sparc64 ;;
-sparc64b)
-		base_machine=sparc machine=sparc/sparc64/sparcv9b ;;
-sparc64v)
-		base_machine=sparc machine=sparc/sparc64/sparcv9v ;;
-sparc64v2)
-		base_machine=sparc machine=sparc/sparc64/sparcv9v2 ;;
-*)		base_machine=$machine ;;
-esac
-
+# Set base_machine if not set by a preconfigure fragment.
+test -n "$base_machine" || base_machine=$machine
 
-if test "$base_machine" = "i386"; then
-  $as_echo "#define USE_REGPARMS 1" >>confdefs.h
-
-fi
 
 # For the multi-arch option we need support in the assembler & linker.
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for assembler and linker STT_GNU_IFUNC support" >&5
@@ -4404,7 +4472,7 @@ case $as_dir/ in #((
     # by default.
     for ac_prog in ginstall scoinst install; do
       for ac_exec_ext in '' $ac_executable_extensions; do
-	if { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; }; then
+	if as_fn_executable_p "$as_dir/$ac_prog$ac_exec_ext"; then
 	  if test $ac_prog = install &&
 	    grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
 	    # AIX install.  It has an incompatible calling convention.
@@ -4530,7 +4598,7 @@ $as_echo "$libc_cv_prog_ld_gnu" >&6; }
 gnu_ld=$libc_cv_prog_ld_gnu
 
 
-# Accept binutils 2.20 or newer.
+# Accept binutils 2.22 or newer.
 for ac_prog in $AS
 do
   # Extract the first word of "$ac_prog", so it can be a program name with args.
@@ -4549,7 +4617,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_AS="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -4582,7 +4650,7 @@ $as_echo_n "checking version of $AS... " >&6; }
   ac_prog_version=`$AS --version 2>&1 | sed -n 's/^.*GNU assembler.* \([0-9]*\.[0-9.]*\).*$/\1/p'`
   case $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
-    2.1[0-9][0-9]*|2.[2-9][0-9]*|[3-9].*|[1-9][0-9]*)
+    2.1[0-9][0-9]*|2.2[2-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*)
        ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
     *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
 
@@ -4612,7 +4680,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_LD="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -4645,7 +4713,7 @@ $as_echo_n "checking version of $LD... " >&6; }
   ac_prog_version=`$LD --version 2>&1 | sed -n 's/^.*GNU ld.* \([0-9][0-9]*\.[0-9.]*\).*$/\1/p'`
   case $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
-    2.1[0-9][0-9]*|2.[2-9][0-9]*|[3-9].*|[1-9][0-9]*)
+    2.1[0-9][0-9]*|2.2[2-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*)
        ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
     *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
 
@@ -4660,69 +4728,6 @@ fi
 
 # These programs are version sensitive.
 
-for ac_prog in ${ac_tool_prefix}gcc ${ac_tool_prefix}cc
-do
-  # Extract the first word of "$ac_prog", so it can be a program name with args.
-set dummy $ac_prog; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_CC+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test -n "$CC"; then
-  ac_cv_prog_CC="$CC" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
-    ac_cv_prog_CC="$ac_prog"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-fi
-fi
-CC=$ac_cv_prog_CC
-if test -n "$CC"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
-$as_echo "$CC" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-  test -n "$CC" && break
-done
-
-if test -z "$CC"; then
-  ac_verc_fail=yes
-else
-  # Found it, now check the version.
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking version of $CC" >&5
-$as_echo_n "checking version of $CC... " >&6; }
-  ac_prog_version=`$CC -v 2>&1 | sed -n 's/^.*version \([egcygnustpi-]*[0-9.]*\).*$/\1/p'`
-  case $ac_prog_version in
-    '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
-    4.[4-9].* | 4.[1-9][0-9].* | [5-9].* )
-       ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
-    *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
-
-  esac
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_prog_version" >&5
-$as_echo "$ac_prog_version" >&6; }
-fi
-if test $ac_verc_fail = yes; then
-  critic_missing="$critic_missing gcc"
-fi
-
 for ac_prog in gnumake gmake make
 do
   # Extract the first word of "$ac_prog", so it can be a program name with args.
@@ -4741,7 +4746,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_MAKE="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -4805,7 +4810,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_MSGFMT="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -4868,7 +4873,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_MAKEINFO="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -4901,7 +4906,7 @@ $as_echo_n "checking version of $MAKEINFO... " >&6; }
   ac_prog_version=`$MAKEINFO --version 2>&1 | sed -n 's/^.*GNU texinfo.* \([0-9][0-9.]*\).*$/\1/p'`
   case $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
-    4.[5-9]*|4.[1-9][0-9]*|[5-9].*)
+    4.[7-9]*|4.[1-9][0-9]*|[5-9].*)
        ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
     *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
 
@@ -4931,7 +4936,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_SED="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -4994,7 +4999,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_AWK="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5040,6 +5045,39 @@ if test $ac_verc_fail = yes; then
 fi
 
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $CC is sufficient to build libc" >&5
+$as_echo_n "checking if $CC is sufficient to build libc... " >&6; }
+if ${libc_cv_compiler_ok+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+#if !defined __GNUC__ || __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 6)
+#error insufficient compiler
+#endif
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  libc_cv_compiler_ok=yes
+else
+  libc_cv_compiler_ok=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_compiler_ok" >&5
+$as_echo "$libc_cv_compiler_ok" >&6; }
+if test $libc_cv_compiler_ok != yes; then :
+  critic_missing="$critic_missing compiler"
+fi
+
 if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}nm", so it can be a program name with args.
 set dummy ${ac_tool_prefix}nm; ac_word=$2
@@ -5057,7 +5095,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_NM="${ac_tool_prefix}nm"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5097,7 +5135,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_ac_ct_NM="nm"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5152,7 +5190,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_prog_AUTOCONF="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5298,7 +5336,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_path_BASH_SHELL="$as_dir/$ac_word$ac_exec_ext"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5321,68 +5359,6 @@ $as_echo "no" >&6; }
 fi
 
 
-if test "$BASH_SHELL" != no &&
-   $BASH_SHELL -c 'test "$BASH_VERSINFO" \
-	     && test "$BASH_VERSINFO" -ge 2 >&/dev/null'; then
-  libc_cv_have_bash2=yes
-else
-  libc_cv_have_bash2=no
-fi
-
-
-if test "$BASH_SHELL" = no; then
-  # Extract the first word of "ksh", so it can be a program name with args.
-set dummy ksh; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_KSH+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  case $KSH in
-  [\\/]* | ?:[\\/]*)
-  ac_cv_path_KSH="$KSH" # Let the user override the test with a path.
-  ;;
-  *)
-  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
-    ac_cv_path_KSH="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-  test -z "$ac_cv_path_KSH" && ac_cv_path_KSH="no"
-  ;;
-esac
-fi
-KSH=$ac_cv_path_KSH
-if test -n "$KSH"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $KSH" >&5
-$as_echo "$KSH" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-  if test "$KSH" = no; then
-    libc_cv_have_ksh=no
-  else
-    libc_cv_have_ksh=yes
-  fi
-else
-  KSH="$BASH_SHELL"
-
-  libc_cv_have_ksh=yes
-fi
-
 
 # Extract the first word of "perl", so it can be a program name with args.
 set dummy perl; ac_word=$2
@@ -5402,7 +5378,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_path_PERL="$as_dir/$ac_word$ac_exec_ext"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5448,7 +5424,7 @@ do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
     ac_cv_path_INSTALL_INFO="$as_dir/$ac_word$ac_exec_ext"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
@@ -5471,27 +5447,26 @@ $as_echo "no" >&6; }
 fi
 
 
-# Extract the first word of "bison", so it can be a program name with args.
-set dummy bison; ac_word=$2
+for ac_prog in bison
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_BISON+:} false; then :
+if ${ac_cv_prog_BISON+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  case $BISON in
-  [\\/]* | ?:[\\/]*)
-  ac_cv_path_BISON="$BISON" # Let the user override the test with a path.
-  ;;
-  *)
-  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-as_dummy="$PATH:/usr/local/bin:/usr/bin:/bin"
-for as_dir in $as_dummy
+  if test -n "$BISON"; then
+  ac_cv_prog_BISON="$BISON" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
 do
   IFS=$as_save_IFS
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
-  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
-    ac_cv_path_BISON="$as_dir/$ac_word$ac_exec_ext"
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_BISON="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
   fi
@@ -5499,11 +5474,9 @@ done
   done
 IFS=$as_save_IFS
 
-  test -z "$ac_cv_path_BISON" && ac_cv_path_BISON="no"
-  ;;
-esac
 fi
-BISON=$ac_cv_path_BISON
+fi
+BISON=$ac_cv_prog_BISON
 if test -n "$BISON"; then
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: $BISON" >&5
 $as_echo "$BISON" >&6; }
@@ -5513,6 +5486,30 @@ $as_echo "no" >&6; }
 fi
 
 
+  test -n "$BISON" && break
+done
+
+if test -z "$BISON"; then
+  ac_verc_fail=yes
+else
+  # Found it, now check the version.
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking version of $BISON" >&5
+$as_echo_n "checking version of $BISON... " >&6; }
+  ac_prog_version=`$BISON --version 2>&1 | sed -n 's/^.*bison (GNU Bison) \([0-9]*\.[0-9.]*\).*$/\1/p'`
+  case $ac_prog_version in
+    '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
+    2.7*|[3-9].*|[1-9][0-9]*)
+       ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
+    *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
+
+  esac
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_prog_version" >&5
+$as_echo "$ac_prog_version" >&6; }
+fi
+if test $ac_verc_fail = yes; then
+  BISON=no
+fi
+
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for libc-friendly stddef.h" >&5
 $as_echo_n "checking for libc-friendly stddef.h... " >&6; }
@@ -5752,6 +5749,45 @@ $as_echo "$libc_cv_visibility_attribute" >&6; }
 fi
 
 if test $libc_cv_visibility_attribute = yes; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking linker support for protected data symbol" >&5
+$as_echo_n "checking linker support for protected data symbol... " >&6; }
+if ${libc_cv_protected_data+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat > conftest.c <<EOF
+		  int bar __attribute__ ((visibility ("protected"))) = 1;
+EOF
+		  libc_cv_protected_data=no
+		  if { ac_try='${CC-cc} -nostdlib -nostartfiles -fPIC -shared conftest.c -o conftest.so'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then
+		    cat > conftest.c <<EOF
+		    extern int bar;
+		    int main (void) { return bar; }
+EOF
+		    if { ac_try='${CC-cc} -nostdlib -nostartfiles conftest.c -o conftest conftest.so'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then
+		      libc_cv_protected_data=yes
+		    fi
+		  fi
+		  rm -f conftest.*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_protected_data" >&5
+$as_echo "$libc_cv_protected_data" >&6; }
+else
+  libc_cv_protected_data=no
+fi
+
+
+if test $libc_cv_visibility_attribute = yes; then
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for broken __attribute__((visibility()))" >&5
 $as_echo_n "checking for broken __attribute__((visibility()))... " >&6; }
 if ${libc_cv_broken_visibility_attribute+:} false; then :
@@ -6052,98 +6088,6 @@ fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_linker_feature" >&5
 $as_echo "$libc_linker_feature" >&6; }
 
-# Add-on fragments can set these for other machines.
-libc_commonpagesize=${libc_commonpagesize:-no}
-libc_relro_required=${libc_relro_required:-no}
-case "$base_machine" in
-  i[34567]86 | x86_64 | powerpc* | s390*)
-    libc_commonpagesize=0x1000
-    libc_relro_required=yes
-    ;;
-  sparc*)
-    libc_commonpagesize=0x2000
-    libc_relro_required=yes
-    ;;
-esac
-
-if test $libc_commonpagesize != no; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -z relro option" >&5
-$as_echo_n "checking for -z relro option... " >&6; }
-if ${libc_cv_z_relro+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-    libc_cv_z_relro=no
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int _start (void) { return 42; }
-extern void _exit (int);
-/* Since these pointers are const, they should go in rodata.
-   Since they refer to functions that have to be resolved by
-   dynamic linking, they should instead go in RELRO data.  */
-const void *const relro[] = { &_start, &_exit, 0 };
-/* GNU ld fails to produce RELRO data when it's very small and there is no
-   normal writable data following it, or if only uninitialized (.bss) data
-   follows it, or only very small writable data.  */
-int data[0x10000] = { 1, };
-
-_ACEOF
-  cat > conftest.awk <<\EOF
-BEGIN {
-  result = "no"
-  commonpagesize = strtonum(commonpagesize)
-}
-{ print "LINE:", $0 > "/dev/stderr" }
-$1 == "GNU_RELRO" {
-  vaddr = strtonum($3)
-  memsz = strtonum($6)
-  end = vaddr + memsz
-  printf "vaddr %#x memsz %#x end %#x commonpagesize %#x\n", \
-    vaddr, memsz, end, commonpagesize > "/dev/stderr"
-  result = (end % commonpagesize == 0) ? "yes" : "broken"
-}
-END { print result }
-EOF
-  { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
-		    -fPIC -shared -o conftest.so conftest.c
-		    -nostartfiles -nostdlib
-		    -Wl,-z,relro 1>&5'
-  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; } &&
-  { ac_try='$READELF -Wl conftest.so > conftest.ph'
-  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; } &&
-  { ac_try='
-      $AWK -v commonpagesize=$libc_commonpagesize -f conftest.awk
-	   conftest.ph > conftest.cps
-    '
-  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; } &&
-  libc_cv_z_relro=`cat conftest.cps 2>&5`
-  rm -f conftest*
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_z_relro" >&5
-$as_echo "$libc_cv_z_relro" >&6; }
-  if { test "x$libc_relro_required" = xyes &&
-       test "x$libc_cv_z_relro" != xyes
-     }
-  then
-    as_fn_error $? "linker with -z relro support required" "$LINENO" 5
-  fi
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: missing architecture parameter to check for working -z relro" >&5
-$as_echo "$as_me: WARNING: missing architecture parameter to check for working -z relro" >&2;}
-fi
-
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -Bgroup option" >&5
 $as_echo_n "checking for -Bgroup option... " >&6; }
 if ${libc_cv_Bgroup+:} false; then :
@@ -6593,43 +6537,6 @@ elif test $libc_cv_asm_weakext_directive = yes; then
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether CFI directives are supported" >&5
-$as_echo_n "checking whether CFI directives are supported... " >&6; }
-if ${libc_cv_asm_cfi_directives+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  case $machine in
-  sparc/sparc64*) cfi_offset=2047;;
-  *) cfi_offset=0;;
-esac
-cat > conftest.s <<EOF
-	.text
-	.type   func,%function
-func:
-	.cfi_startproc
-	.cfi_remember_state
-	.cfi_rel_offset 1, $cfi_offset
-	.cfi_endproc
-EOF
-if { ac_try='${CC-cc} $ASFLAGS -c conftest.s 1>&5'
-  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; }; }; then
-  libc_cv_asm_cfi_directives=yes
-else
-  libc_cv_asm_cfi_directives=no
-fi
-rm -f conftest*
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_asm_cfi_directives" >&5
-$as_echo "$libc_cv_asm_cfi_directives" >&6; }
-if test $libc_cv_asm_cfi_directives = yes; then
-  $as_echo "#define HAVE_ASM_CFI_DIRECTIVES 1" >>confdefs.h
-
-fi
-
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ld --no-whole-archive" >&5
 $as_echo_n "checking for ld --no-whole-archive... " >&6; }
 if ${libc_cv_ld_no_whole_archive+:} false; then :
@@ -6690,40 +6597,6 @@ if test $libc_cv_gcc_exceptions = yes; then
   exceptions=-fexceptions
 fi
 
-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.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether clobbering cr0 causes problems" >&5
-$as_echo_n "checking whether clobbering cr0 causes problems... " >&6; }
-if ${libc_cv_c_asmcr0_bug+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-int tester(int x) { asm ("" : : : "cc"); return x & 123; }
-int
-main ()
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  libc_cv_c_asmcr0_bug='no'
-else
-  libc_cv_c_asmcr0_bug='yes'
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_c_asmcr0_bug" >&5
-$as_echo "$libc_cv_c_asmcr0_bug" >&6; }
-if test "$libc_cv_c_asmcr0_bug" != 'no'; then
-  $as_echo "#define BROKEN_PPC_ASM_CR0 1" >>confdefs.h
-
-fi
-fi
-
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for __builtin_memset" >&5
 $as_echo_n "checking for __builtin_memset... " >&6; }
 if ${libc_cv_gcc_builtin_memset+:} false; then :
@@ -7003,38 +6876,9 @@ else
   have_selinux=no
 fi
 
-  # See if we have the SELinux header with the NSCD permissions in it.
-  if test x$have_selinux = xyes ; then
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for NSCD Flask permissions in selinux/av_permissions.h" >&5
-$as_echo_n "checking for NSCD Flask permissions in selinux/av_permissions.h... " >&6; }
-    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <selinux/av_permissions.h>
-int
-main ()
-{
-#ifdef NSCD__SHMEMHOST
-		     return 0;
-		     #else
-		     #error NSCD__SHMEMHOST not defined
-		     #endif
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  have_selinux=yes
-else
-  have_selinux=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_selinux" >&5
-$as_echo "$have_selinux" >&6; }
-  fi
-
   if test x$with_selinux = xyes ; then
     if test x$have_selinux = xno ; then
-      as_fn_error $? "SELinux explicitly required, but sufficiently recent SELinux library not found" "$LINENO" 5
+      as_fn_error $? "SELinux explicitly required, but SELinux library not found" "$LINENO" 5
     fi
   fi
 fi
@@ -7265,9 +7109,99 @@ fi
 $as_echo "$libc_cv_predef_stack_protector" >&6; }
 libc_extra_cflags=
 if test $libc_cv_predef_stack_protector = yes; then
-  libc_extra_cflags=-fno-stack-protector
+  libc_extra_cflags="$libc_extra_cflags -fno-stack-protector"
 fi
+libc_extra_cppflags=
+
+# Some linkers on some architectures support __ehdr_start but with
+# bugs.  Make sure usage of it does not create relocations in the
+# output (as the linker should resolve them all for us).
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the linker provides working __ehdr_start" >&5
+$as_echo_n "checking whether the linker provides working __ehdr_start... " >&6; }
+if ${libc_cv_ehdr_start+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
 
+old_CFLAGS="$CFLAGS"
+old_LDFLAGS="$LDFLAGS"
+old_LIBS="$LIBS"
+CFLAGS="$CFLAGS -fPIC"
+LDFLAGS="$LDFLAGS -nostdlib -nostartfiles -shared"
+LIBS=
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+typedef struct {
+  char foo;
+  long val;
+} Ehdr;
+extern const Ehdr __ehdr_start __attribute__ ((visibility ("hidden")));
+long ehdr (void) { return __ehdr_start.val; }
+
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  if $READELF -r conftest | fgrep __ehdr_start >/dev/null; then
+		  libc_cv_ehdr_start=broken
+		else
+		  libc_cv_ehdr_start=yes
+		fi
+else
+  libc_cv_ehdr_start=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+CFLAGS="$old_CFLAGS"
+LDFLAGS="$old_LDFLAGS"
+LIBS="$old_LIBS"
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ehdr_start" >&5
+$as_echo "$libc_cv_ehdr_start" >&6; }
+if test "$libc_cv_ehdr_start" = yes; then
+  $as_echo "#define HAVE_EHDR_START 1" >>confdefs.h
+
+elif test "$libc_cv_ehdr_start" = broken; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: linker is broken -- you should upgrade" >&5
+$as_echo "$as_me: WARNING: linker is broken -- you should upgrade" >&2;}
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for __builtin_trap with no external dependencies" >&5
+$as_echo_n "checking for __builtin_trap with no external dependencies... " >&6; }
+if ${libc_cv_builtin_trap+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  libc_cv_builtin_trap=no
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+__builtin_trap ()
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+libc_undefs=`$NM -u conftest.o |
+  LC_ALL=C $AWK '$1 == "U" { print $2 | "sort -u"; next } { exit(1) }' \
+    2>&5` || {
+  as_fn_error $? "confusing output from $NM -u" "$LINENO" 5
+}
+echo >&5 "libc_undefs='$libc_undefs'"
+if test -z "$libc_undefs"; then
+  libc_cv_builtin_trap=yes
+fi
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_builtin_trap" >&5
+$as_echo "$libc_cv_builtin_trap" >&6; }
+if test $libc_cv_builtin_trap = yes; then
+  $as_echo "#define HAVE_BUILTIN_TRAP 1" >>confdefs.h
+
+fi
 
 ### End of automated tests.
 ### Now run sysdeps configure fragments.
@@ -7294,6 +7228,15 @@ $as_echo "running configure fragment for $dir" >&6; }
   fi
 done
 
+if test x"$build_mathvec" = xnotset; then
+  build_mathvec=no
+fi
+config_vars="$config_vars
+build-mathvec = $build_mathvec"
+
+
+
+
 if test x$libc_cv_gcc_unwind_find_fde = xyes; then
   $as_echo "#define EXPORT_UNWIND_FIND_FDE 1" >>confdefs.h
 
@@ -7376,6 +7319,26 @@ fi
 $as_echo "$libc_cv_pic_default" >&6; }
 
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether -fPIE is default" >&5
+$as_echo_n "checking whether -fPIE is default... " >&6; }
+if ${libc_cv_pie_default+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  libc_cv_pie_default=yes
+cat > conftest.c <<EOF
+#if defined __PIE__ || defined __pie__ || defined PIE || defined pie
+# error PIE is default.
+#endif
+EOF
+if eval "${CC-cc} -S conftest.c 2>&5 1>&5"; then
+  libc_cv_pie_default=no
+fi
+rm -f conftest.*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_pie_default" >&5
+$as_echo "$libc_cv_pie_default" >&6; }
+
+
 
 
 
@@ -7799,16 +7762,16 @@ if (echo >conf$$.file) 2>/dev/null; then
     # ... but there are two gotchas:
     # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
     # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
-    # In both cases, we have to default to `cp -p'.
+    # In both cases, we have to default to `cp -pR'.
     ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
-      as_ln_s='cp -p'
+      as_ln_s='cp -pR'
   elif ln conf$$.file conf$$ 2>/dev/null; then
     as_ln_s=ln
   else
-    as_ln_s='cp -p'
+    as_ln_s='cp -pR'
   fi
 else
-  as_ln_s='cp -p'
+  as_ln_s='cp -pR'
 fi
 rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
 rmdir conf$$.dir 2>/dev/null
@@ -7868,28 +7831,16 @@ else
   as_mkdir_p=false
 fi
 
-if test -x / >/dev/null 2>&1; then
-  as_test_x='test -x'
-else
-  if ls -dL / >/dev/null 2>&1; then
-    as_ls_L_option=L
-  else
-    as_ls_L_option=
-  fi
-  as_test_x='
-    eval sh -c '\''
-      if test -d "$1"; then
-	test -d "$1/.";
-      else
-	case $1 in #(
-	-*)set "./$1";;
-	esac;
-	case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
-	???[sx]*):;;*)false;;esac;fi
-    '\'' sh
-  '
-fi
-as_executable_p=$as_test_x
+
+# as_fn_executable_p FILE
+# -----------------------
+# Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+  test -f "$1" && test -x "$1"
+} # as_fn_executable_p
+as_test_x='test -x'
+as_executable_p=as_fn_executable_p
 
 # Sed expression to map a string onto a valid CPP name.
 as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
@@ -7911,7 +7862,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # values after options handling.
 ac_log="
 This file was extended by GNU C Library $as_me (see version.h), which was
-generated by GNU Autoconf 2.68.  Invocation command line was
+generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
   CONFIG_HEADERS  = $CONFIG_HEADERS
@@ -7979,10 +7930,10 @@ cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
 GNU C Library config.status (see version.h)
-configured by $0, generated by GNU Autoconf 2.68,
+configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 
-Copyright (C) 2010 Free Software Foundation, Inc.
+Copyright (C) 2012 Free Software Foundation, Inc.
 This config.status script is free software; the Free Software Foundation
 gives unlimited permission to copy, distribute and modify it."
 
@@ -8071,7 +8022,7 @@ fi
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 if \$ac_cs_recheck; then
-  set X '$SHELL' '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+  set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
   shift
   \$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6
   CONFIG_SHELL='$SHELL'