X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=configure;h=c773c487b542b3beb12fa2c70c8ea123b7bee5cd;hb=02d8b5ab1c89bcef2627d2b621bfb35b573852c2;hp=89566c54c69e0d5c10bc1b9934035dca0aefe37f;hpb=f4a58f0d3577546bb3978b042863ba0ef82a7d18;p=thirdparty%2Fglibc.git

diff --git a/configure b/configure
index 89566c54c69..c773c487b54 100755
--- a/configure
+++ b/configure
@@ -2,7 +2,7 @@
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.69 for GNU C Library (see version.h).
 #
-# Report bugs to <http://sourceware.org/bugzilla/>.
+# Report bugs to <https://sourceware.org/bugzilla/>.
 #
 #
 # Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
@@ -197,8 +197,7 @@ 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'\" &&
-  test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1
-test \$(( 1 + 1 )) = 2 || exit 1"
+  test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1"
   if (eval "$as_required") 2>/dev/null; then :
   as_have_required=yes
 else
@@ -267,7 +266,7 @@ fi
     $as_echo "$0: be upgraded to zsh 4.3.4 or later."
   else
     $as_echo "$0: Please tell bug-autoconf@gnu.org and
-$0: http://sourceware.org/bugzilla/ about your system,
+$0: https://sourceware.org/bugzilla/ about your system,
 $0: including any error possibly output before this
 $0: message. Then install a modern shell, or manually run
 $0: the script under such a shell if you do have one."
@@ -582,12 +581,11 @@ PACKAGE_NAME='GNU C Library'
 PACKAGE_TARNAME='glibc'
 PACKAGE_VERSION='(see version.h)'
 PACKAGE_STRING='GNU C Library (see version.h)'
-PACKAGE_BUGREPORT='http://sourceware.org/bugzilla/'
+PACKAGE_BUGREPORT='https://sourceware.org/bugzilla/'
 PACKAGE_URL='http://www.gnu.org/software/glibc/'
 
 ac_unique_file="include/features.h"
 enable_option_checking=no
-ac_includes_default='/* none */'
 ac_subst_vars='LTLIBOBJS
 LIBOBJS
 RELEASE
@@ -596,25 +594,26 @@ mach_interface_list
 DEFINES
 static_nss
 profile
+libc_cv_multidir
+libc_cv_pie_default
+libc_cv_cc_pie_default
 libc_cv_pic_default
 shared
 static
 ldd_rewrite_script
 use_ldconfig
-libc_cv_forced_unwind
 libc_cv_rootsbindir
 libc_cv_localstatedir
 libc_cv_sysconfdir
-libc_cv_localedir
+libc_cv_complocaledir
 libc_cv_rtlddir
 libc_cv_slibdir
-old_glibc_headers
 use_nscd
 libc_cv_gcc_unwind_find_fde
 libc_extra_cppflags
 libc_extra_cflags
+libc_cv_cxx_thread_local
 CPPUNDEFS
-sizeof_long_double
 have_selinux
 have_libcap
 have_libaudit
@@ -622,27 +621,31 @@ LIBGD
 libc_cv_cc_loop_to_function
 libc_cv_cc_submachine
 libc_cv_cc_nofma
-exceptions
-gnu89_inline
-libc_cv_ssp
+libc_cv_mtls_dialect_gnu2
 fno_unit_at_a_time
 libc_cv_output_format
+libc_cv_has_glob_dat
 libc_cv_hashstyle
 libc_cv_fpie
 libc_cv_z_execstack
 libc_cv_z_combreloc
 ASFLAGS_config
-libc_cv_Bgroup
 libc_cv_cc_with_libunwind
-BISON
+libc_cv_insert
+libc_cv_protected_data
 INSTALL_INFO
 PERL
 BASH_SHELL
-libc_cv_gcc_static_libgcc
+CXX_BITS_STD_ABS_H
+CXX_CMATH_HEADER
+CXX_CSTDLIB_HEADER
 CXX_SYSINCLUDES
 SYSINCLUDES
+PYTHON
+PYTHON_PROG
 AUTOCONF
 NM
+BISON
 AWK
 SED
 MAKEINFO
@@ -650,6 +653,7 @@ MSGFMT
 MAKE
 LD
 AS
+GPROF
 OBJCOPY
 OBJDUMP
 AR
@@ -657,29 +661,37 @@ LN_S
 INSTALL_DATA
 INSTALL_SCRIPT
 INSTALL_PROGRAM
-sysdeps_add_ons
 sysnames
 submachine
 multi_arch
+libc_cv_textrel_ifunc
+no_stack_protector
+stack_protector
+libc_cv_ssp
+libc_cv_with_fp
 base_machine
-add_on_subdirs
-add_ons
+have_tunables
 build_pt_chown
 build_nscd
+build_obsolete_nsl
 link_obsolete_rpc
+libc_cv_static_nss_crypt
 libc_cv_nss_crypt
+build_crypt
+experimental_malloc
+enable_werror
 all_warnings
 force_install
 bindnow
-enable_lock_elision
 hardcoded_path_in_tests
+enable_timezone_tools
+extra_nonshared_cflags
 use_default_link
 sysheaders
-with_fp
-READELF
 ac_ct_CXX
 CXXFLAGS
 CXX
+READELF
 CPP
 cross_compiling
 BUILD_CC
@@ -748,32 +760,40 @@ with_bugurl
 with_gd
 with_gd_include
 with_gd_lib
-with_fp
 with_binutils
 with_selinux
 with_headers
 with_default_link
+with_nonshared_cflags
 enable_sanity_checks
 enable_shared
 enable_profile
+enable_static_pie
+enable_timezone_tools
 enable_hardcoded_path_in_tests
 enable_stackguard_randomization
-enable_lock_elision
-enable_add_ons
 enable_hidden_plt
 enable_bind_now
+enable_stack_protector
 enable_static_nss
 enable_force_install
 enable_maintainer_mode
 enable_kernel
 enable_all_warnings
+enable_werror
 enable_multi_arch
+enable_experimental_malloc
+enable_crypt
 enable_nss_crypt
 enable_obsolete_rpc
+enable_obsolete_nsl
 enable_systemtap
 enable_build_nscd
 enable_nscd
 enable_pt_chown
+enable_tunables
+enable_mathvec
+enable_cet
 with_cpu
 '
       ac_precious_vars='build_alias
@@ -788,8 +808,7 @@ CPP
 CXX
 CXXFLAGS
 CCC'
-ac_subdirs_all='
-'
+ac_subdirs_all=''
 
 # Initialize some variables set by options.
 ac_init_help=
@@ -1406,19 +1425,21 @@ 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-static-pie     enable static PIE support and use it in the
+                          testsuite [default=no]
+  --disable-timezone-tools
+                          do not install timezone tools [default=install]
   --enable-hardcoded-path-in-tests
                           hardcode newly built glibc path in tests
                           [default=no]
   --enable-stackguard-randomization
                           initialize __stack_chk_guard canary with a random
                           number at program start
-  --enable-lock-elision=yes/no
-                          Enable lock elision for pthread mutexes by default
-  --enable-add-ons[=DIRS...]
-                          configure and build add-ons in DIR1,DIR2,... search
-                          for add-ons if no parameter given
   --disable-hidden-plt    do not hide internal function calls to avoid PLT
   --enable-bind-now       disable lazy relocations in DSOs
+  --enable-stack-protector=[yes|no|all|strong]
+                          Use -fstack-protector[-all|-strong] to detect glibc
+                          buffer overflows
   --enable-static-nss     build static NSS modules [default=no]
   --disable-force-install don't force installation of files from this package,
                           even if they are older than the installed files
@@ -1428,15 +1449,28 @@ 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
+  --disable-experimental-malloc
+                          disable experimental malloc features
+  --disable-crypt         do not build nor install the passphrase hashing
+                          library, libcrypt
   --enable-nss-crypt      enable libcrypt to use nss
   --enable-obsolete-rpc   build and install the obsolete RPC code for
                           link-time usage
+  --enable-obsolete-nsl   build and install the obsolete libnsl library and
+                          depending NSS modules
   --enable-systemtap      enable systemtap static probe points [default=no]
   --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-tunables       Enable tunables support. Known values are 'yes',
+                          'no' and 'valstring'
+  --enable-mathvec        Enable building and installing mathvec [default
+                          depends on architecture]
+  --enable-cet            enable Intel Control-flow Enforcement Technology
+                          (CET), x86 only
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -1446,12 +1480,13 @@ Optional Packages:
   --with-gd=DIR           find libgd include dir and library with prefix DIR
   --with-gd-include=DIR   find libgd include files in DIR
   --with-gd-lib=DIR       find libgd library files in DIR
-  --with-fp               if using floating-point hardware [default=yes]
   --with-binutils=PATH    specify location of binutils (as and ld)
   --with-selinux          if building with SELinux support
   --with-headers=PATH     location of system headers to use (for example
                           /usr/src/linux/include) [default=compiler default]
   --with-default-link     do not use explicit linker scripts
+  --with-nonshared-cflags=CFLAGS
+                          build nonshared libraries with additional CFLAGS
   --with-cpu=CPU          select code for CPU variant
 
 Some influential environment variables:
@@ -1469,7 +1504,7 @@ Some influential environment variables:
 Use these variables to override the choices made by `configure' or to help
 it to find libraries and programs with nonstandard names/locations.
 
-Report bugs to <http://sourceware.org/bugzilla/>.
+Report bugs to <https://sourceware.org/bugzilla/>.
 GNU C Library home page: <http://www.gnu.org/software/glibc/>.
 General help using GNU software: <http://www.gnu.org/gethelp/>.
 _ACEOF
@@ -1624,10 +1659,10 @@ fi
 
 } # ac_fn_cxx_try_compile
 
-# ac_fn_c_try_link LINENO
-# -----------------------
+# ac_fn_cxx_try_link LINENO
+# -------------------------
 # Try to link conftest.$ac_ext, and return whether this succeeded.
-ac_fn_c_try_link ()
+ac_fn_cxx_try_link ()
 {
   as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
   rm -f conftest.$ac_objext conftest$ac_exeext
@@ -1647,7 +1682,7 @@ $as_echo "$ac_try_echo"; } >&5
   fi
   $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; } && {
-	 test -z "$ac_c_werror_flag" ||
+	 test -z "$ac_cxx_werror_flag" ||
 	 test ! -s conftest.err
        } && test -s conftest$ac_exeext && {
 	 test "$cross_compiling" = yes ||
@@ -1668,15 +1703,15 @@ fi
   eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
   as_fn_set_status $ac_retval
 
-} # ac_fn_c_try_link
+} # ac_fn_cxx_try_link
 
-# ac_fn_c_try_run LINENO
-# ----------------------
-# Try to link conftest.$ac_ext, and return whether this succeeded. Assumes
-# that executables *can* be run.
-ac_fn_c_try_run ()
+# ac_fn_c_try_link LINENO
+# -----------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_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;;
@@ -1684,216 +1719,37 @@ case "(($ac_try" in
 esac
 eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
 $as_echo "$ac_try_echo"; } >&5
-  (eval "$ac_link") 2>&5
-  ac_status=$?
-  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
-  test $ac_status = 0; } && { ac_try='./conftest$ac_exeext'
-  { { 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_try") 2>&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; }; }; then :
+  test $ac_status = 0; } && {
+	 test -z "$ac_c_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: program exited with status $ac_status" >&5
-       $as_echo "$as_me: failed program was:" >&5
+  $as_echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-       ac_retval=$ac_status
+	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_c_try_run
-
-# ac_fn_c_compute_int LINENO EXPR VAR INCLUDES
-# --------------------------------------------
-# Tries to find the compile-time value of EXPR in a program that includes
-# INCLUDES, setting VAR accordingly. Returns whether the value could be
-# computed
-ac_fn_c_compute_int ()
-{
-  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  if test "$cross_compiling" = yes; then
-    # Depending upon the size, compute the lo and hi bounds.
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-$4
-int
-main ()
-{
-static int test_array [1 - 2 * !(($2) >= 0)];
-test_array [0] = 0;
-return test_array [0];
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ac_lo=0 ac_mid=0
-  while :; do
-    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-$4
-int
-main ()
-{
-static int test_array [1 - 2 * !(($2) <= $ac_mid)];
-test_array [0] = 0;
-return test_array [0];
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ac_hi=$ac_mid; break
-else
-  as_fn_arith $ac_mid + 1 && ac_lo=$as_val
-			if test $ac_lo -le $ac_mid; then
-			  ac_lo= ac_hi=
-			  break
-			fi
-			as_fn_arith 2 '*' $ac_mid + 1 && ac_mid=$as_val
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-  done
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-$4
-int
-main ()
-{
-static int test_array [1 - 2 * !(($2) < 0)];
-test_array [0] = 0;
-return test_array [0];
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ac_hi=-1 ac_mid=-1
-  while :; do
-    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-$4
-int
-main ()
-{
-static int test_array [1 - 2 * !(($2) >= $ac_mid)];
-test_array [0] = 0;
-return test_array [0];
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ac_lo=$ac_mid; break
-else
-  as_fn_arith '(' $ac_mid ')' - 1 && ac_hi=$as_val
-			if test $ac_mid -le $ac_hi; then
-			  ac_lo= ac_hi=
-			  break
-			fi
-			as_fn_arith 2 '*' $ac_mid && ac_mid=$as_val
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-  done
-else
-  ac_lo= ac_hi=
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-# Binary search between lo and hi bounds.
-while test "x$ac_lo" != "x$ac_hi"; do
-  as_fn_arith '(' $ac_hi - $ac_lo ')' / 2 + $ac_lo && ac_mid=$as_val
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-$4
-int
-main ()
-{
-static int test_array [1 - 2 * !(($2) <= $ac_mid)];
-test_array [0] = 0;
-return test_array [0];
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ac_hi=$ac_mid
-else
-  as_fn_arith '(' $ac_mid ')' + 1 && ac_lo=$as_val
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-done
-case $ac_lo in #((
-?*) eval "$3=\$ac_lo"; ac_retval=0 ;;
-'') ac_retval=1 ;;
-esac
-  else
-    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-$4
-static long int longval () { return $2; }
-static unsigned long int ulongval () { return $2; }
-#include <stdio.h>
-#include <stdlib.h>
-int
-main ()
-{
-
-  FILE *f = fopen ("conftest.val", "w");
-  if (! f)
-    return 1;
-  if (($2) < 0)
-    {
-      long int i = longval ();
-      if (i != ($2))
-	return 1;
-      fprintf (f, "%ld", i);
-    }
-  else
-    {
-      unsigned long int i = ulongval ();
-      if (i != ($2))
-	return 1;
-      fprintf (f, "%lu", i);
-    }
-  /* Do not output a trailing newline, as this causes \r\n confusion
-     on some platforms.  */
-  return ferror (f) || fclose (f) != 0;
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-  echo >>conftest.val; read $3 <conftest.val; ac_retval=0
-else
-  ac_retval=1
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
-  conftest.$ac_objext conftest.beam conftest.$ac_ext
-rm -f conftest.val
-
-  fi
-  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
-  as_fn_set_status $ac_retval
-
-} # ac_fn_c_compute_int
+} # ac_fn_c_try_link
 cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
@@ -2342,12 +2198,12 @@ _ACEOF
 
 # We require GCC, and by default use its preprocessor.  Override AC_PROG_CPP
 # here to work around the Autoconf issue discussed in
-# <http://sourceware.org/ml/libc-alpha/2013-01/msg00721.html>.
+# <https://sourceware.org/ml/libc-alpha/2013-01/msg00721.html>.
 # AC_PROG_CPP
 
 # We require GCC.  Override _AC_PROG_CC_C89 here to work around the Autoconf
 # issue discussed in
-# <http://sourceware.org/ml/libc-alpha/2013-01/msg00757.html>.
+# <https://sourceware.org/ml/libc-alpha/2013-01/msg00757.html>.
 
 
 
@@ -2982,6 +2838,99 @@ 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 $CPPFLAGS'
@@ -3240,100 +3189,76 @@ ac_compile='$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 :
+# It's useless to us if it can't link programs (e.g. missing -lstdc++).
+
+{ $as_echo "$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 :
   $as_echo_n "(cached) " >&6
 else
-  if test -n "$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
+  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
 
-fi
-fi
-READELF=$ac_cv_prog_READELF
-if test -n "$READELF"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $READELF" >&5
-$as_echo "$READELF" >&6; }
+# Default, dynamic case.
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  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
+# Static case.
+old_LDFLAGS="$LDFLAGS"
+LDFLAGS="$LDFLAGS -static"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
 
+#include <iostream>
 
-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
+int
+main()
+{
+  std::cout << "Hello, world!";
+  return 0;
+}
 
-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
-$as_echo "no" >&6; }
-fi
+_ACEOF
+if ac_fn_cxx_try_link "$LINENO"; then :
 
-  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"
+  libc_cv_cxx_link_ok=no
 fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LDFLAGS="$old_LDFLAGS"
+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
 
+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
+if test "`cd $srcdir; pwd -P`" = "`pwd -P`"; then
   as_fn_error $? "you must configure in a separate build directory" "$LINENO" 5
 fi
 
@@ -3383,15 +3308,6 @@ libgd-LDFLAGS = $libgd_ldflags"
 fi
 
 
-# Check whether --with-fp was given.
-if test "${with_fp+set}" = set; then :
-  withval=$with_fp; with_fp=$withval
-else
-  with_fp=yes
-fi
-
-
-
 # Check whether --with-binutils was given.
 if test "${with_binutils+set}" = set; then :
   withval=$with_binutils; path_binutils=$withval
@@ -3428,6 +3344,16 @@ else
 fi
 
 
+
+# Check whether --with-nonshared-cflags was given.
+if test "${with_nonshared_cflags+set}" = set; then :
+  withval=$with_nonshared_cflags; extra_nonshared_cflags=$withval
+else
+  extra_nonshared_cflags=
+fi
+
+
+
 # Check whether --enable-sanity-checks was given.
 if test "${enable_sanity_checks+set}" = set; then :
   enableval=$enable_sanity_checks; enable_sanity=$enableval
@@ -3450,6 +3376,21 @@ else
   profile=no
 fi
 
+# Check whether --enable-static-pie was given.
+if test "${enable_static_pie+set}" = set; then :
+  enableval=$enable_static_pie; static_pie=$enableval
+else
+  static_pie=no
+fi
+
+# Check whether --enable-timezone-tools was given.
+if test "${enable_timezone_tools+set}" = set; then :
+  enableval=$enable_timezone_tools; enable_timezone_tools=$enableval
+else
+  enable_timezone_tools=yes
+fi
+
+
 
 # Check whether --enable-hardcoded-path-in-tests was given.
 if test "${enable_hardcoded_path_in_tests+set}" = set; then :
@@ -3472,27 +3413,6 @@ if test "$enable_stackguard_randomize" = yes; then
 
 fi
 
-# Check whether --enable-lock-elision was given.
-if test "${enable_lock_elision+set}" = set; then :
-  enableval=$enable_lock_elision; enable_lock_elision=$enableval
-else
-  enable_lock_elision=no
-fi
-
-
-if test "$enable_lock_elision" = yes ; then
-  $as_echo "#define ENABLE_LOCK_ELISION 1" >>confdefs.h
-
-fi
-
-# Check whether --enable-add-ons was given.
-if test "${enable_add_ons+set}" = set; then :
-  enableval=$enable_add_ons;
-else
-  enable_add_ons=yes
-fi
-
-
 # Check whether --enable-hidden-plt was given.
 if test "${enable_hidden_plt+set}" = set; then :
   enableval=$enable_hidden_plt; hidden=$enableval
@@ -3513,6 +3433,22 @@ else
 fi
 
 
+if test "x$bindnow" = xyes; then
+  $as_echo "#define BIND_NOW 1" >>confdefs.h
+
+fi
+
+# Check whether --enable-stack-protector was given.
+if test "${enable_stack_protector+set}" = set; then :
+  enableval=$enable_stack_protector; enable_stack_protector=$enableval
+else
+  enable_stack_protector=no
+fi
+
+case "$enable_stack_protector" in
+all|yes|no|strong) ;;
+*) as_fn_error $? "Not a valid argument for --enable-stack-protector: \"$enable_stack_protector\"" "$LINENO" 5;;
+esac
 
 # Check whether --enable-static-nss was given.
 if test "${enable_static_nss+set}" = set; then :
@@ -3565,6 +3501,15 @@ 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
@@ -3573,6 +3518,24 @@ else
 fi
 
 
+# Check whether --enable-experimental-malloc was given.
+if test "${enable_experimental_malloc+set}" = set; then :
+  enableval=$enable_experimental_malloc; experimental_malloc=$enableval
+else
+  experimental_malloc=yes
+fi
+
+
+
+# Check whether --enable-crypt was given.
+if test "${enable_crypt+set}" = set; then :
+  enableval=$enable_crypt; build_crypt=$enableval
+else
+  build_crypt=yes
+fi
+
+
+
 # Check whether --enable-nss-crypt was given.
 if test "${enable_nss_crypt+set}" = set; then :
   enableval=$enable_nss_crypt; nss_crypt=$enableval
@@ -3580,13 +3543,22 @@ else
   nss_crypt=no
 fi
 
+if test x$build_libcrypt = xno && test x$nss_crypt = xyes; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: --enable-nss-crypt has no effect when libcrypt is disabled" >&5
+$as_echo "$as_me: WARNING: --enable-nss-crypt has no effect when libcrypt is disabled" >&2;}
+  nss_crypt=no
+fi
 if test x$nss_crypt = xyes; then
   nss_includes=-I$(nss-config --includedir 2>/dev/null)
   if test $? -ne 0; then
     as_fn_error $? "cannot find include directory with nss-config" "$LINENO" 5
   fi
+  nspr_includes=-I$(nspr-config --includedir 2>/dev/null)
+  if test $? -ne 0; then
+    as_fn_error $? "cannot find include directory with nspr-config" "$LINENO" 5
+  fi
   old_CFLAGS="$CFLAGS"
-  CFLAGS="$CFLAGS $nss_includes"
+  CFLAGS="$CFLAGS $nss_includes $nspr_includes"
 
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -3610,6 +3582,7 @@ cannot find NSS headers with lowlevel hash function interfaces" "$LINENO" 5
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
   old_LIBS="$LIBS"
+  old_LDFLAGS="$LDFLAGS"
   LIBS="$LIBS -lfreebl3"
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -3632,14 +3605,41 @@ cannot link program using lowlevel NSS hash functions" "$LINENO" 5
 fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
+  # Check to see if there is a static NSS cryptographic library.
+  # If there isn't then we can't link anything with libcrypt.a,
+  # and that might mean disabling some static tests.
+  LDFLAGS="$LDFLAGS -static"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+typedef int PRBool;
+#include <hasht.h>
+#include <nsslowhash.h>
+int
+main ()
+{
+NSSLOW_Init();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  libc_cv_static_nss_crypt=yes
+else
+  libc_cv_static_nss_crypt=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+  LDFLAGS="$old_LDFLAGS"
   CFLAGS="$old_CFLAGS"
   LIBS="$old_LIBS"
 else
   libc_cv_nss_crypt=no
+  libc_cv_static_nss_crypt=no
 fi
 
 
 
+
 # Check whether --enable-obsolete-rpc was given.
 if test "${enable_obsolete_rpc+set}" = set; then :
   enableval=$enable_obsolete_rpc; link_obsolete_rpc=$enableval
@@ -3654,6 +3654,20 @@ if test "$link_obsolete_rpc" = yes; then
 
 fi
 
+# Check whether --enable-obsolete-nsl was given.
+if test "${enable_obsolete_nsl+set}" = set; then :
+  enableval=$enable_obsolete_nsl; build_obsolete_nsl=$enableval
+else
+  build_obsolete_nsl=no
+fi
+
+
+
+if test "$build_obsolete_nsl" = yes; then
+  $as_echo "#define LINK_OBSOLETE_NSL 1" >>confdefs.h
+
+fi
+
 # Check whether --enable-systemtap was given.
 if test "${enable_systemtap+set}" = set; then :
   enableval=$enable_systemtap; systemtap=$enableval
@@ -3668,7 +3682,7 @@ if ${libc_cv_sdt+:} false; then :
   $as_echo_n "(cached) " >&6
 else
     old_CFLAGS="$CFLAGS"
-  CFLAGS="-std=gnu99 $CFLAGS"
+  CFLAGS="-std=gnu11 $CFLAGS"
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <sys/sdt.h>
@@ -3730,6 +3744,47 @@ if test "$build_pt_chown" = yes; then
 
 fi
 
+# Check whether --enable-tunables was given.
+if test "${enable_tunables+set}" = set; then :
+  enableval=$enable_tunables; have_tunables=$enableval
+else
+  have_tunables=yes
+fi
+
+
+if test "$have_tunables" = yes; then
+  $as_echo "#define HAVE_TUNABLES 1" >>confdefs.h
+
+fi
+
+# 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*)
+  ;;
+gnu*)
+  host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'`
+  ;;
+esac
+
+# Check whether --enable-mathvec was given.
+if test "${enable_mathvec+set}" = set; then :
+  enableval=$enable_mathvec; build_mathvec=$enableval
+else
+  build_mathvec=notset
+fi
+
+
+# Check whether --enable-cet was given.
+if test "${enable_cet+set}" = set; then :
+  enableval=$enable_cet; enable_cet=$enableval
+else
+  enable_cet=no
+fi
+
+
 # We keep the original values in `$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.
@@ -3742,7 +3797,7 @@ config_os="`echo $config_os | sed 's/^unknown-//'`"
 # Some configurations imply other options.
 elf=yes
 
-# The configure fragment of an add-on port can modify these to supplement
+# The configure fragment of a port can modify these to supplement
 # or override the table in the case statement below.  No fragment should
 # ever change the config_* variables, however.
 machine=$config_machine
@@ -3763,139 +3818,19 @@ if test "${with_cpu+set}" = set; then :
 fi
 
 
-if frags=`ls -d $srcdir/sysdeps/*/preconfigure 2> /dev/null`
-then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sysdeps preconfigure fragments" >&5
-$as_echo_n "checking for sysdeps preconfigure fragments... " >&6; }
-  for frag in $frags; do
-    name=`echo "$frag" | sed 's@/[^/]*$@@;s@^.*/@@'`
-    echo $ECHO_N "$name $ECHO_C" >&6
-    . "$frag"
-  done
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: " >&5
-$as_echo "" >&6; }
-fi
-
-# An add-on can set this when it wants to disable the sanity check below.
+# An preconfigure script can set this when it wants to disable the sanity
+# check below.
 libc_config_ok=no
 
-subdirs="$subdirs "
-
-
-case "$enable_add_ons" in
-''|no) add_ons= ;;
-yes|'*')
- add_ons=`cd $srcdir && ls -d 2> /dev/null */configure */sysdeps |
-	  sed 's@/[^/]*$@@' | sort | uniq`
-	 add_ons_automatic=yes
-	 ;;
-*) add_ons=`echo "$enable_add_ons" | sed 's/,/ /g'`
-       add_ons_automatic=no ;;
-esac
-
-configured_add_ons=
-add_ons_sfx=
-add_ons_pfx=
-if test x"$add_ons" != x; then
-  for f in $add_ons; do
-    # Some sanity checks
-    case "$f" in
-    crypt)
-      as_fn_error $? "
-*** It seems that you're using an old \`crypt' add-on.  crypt is now
-*** part of glibc and using the old add-on will not work with this
-*** release.  Start again with fresh sources and without the old
-*** \`crypt' add-on." "$LINENO" 5
-    ;;
-    localedata)
-      as_fn_error $? "
-*** It seems that you're using an old \`localedata' add-on.  localedata
-*** is now part of glibc and using the old add-on will not work with
-*** this release.  Start again with fresh sources and without the old
-*** \`localedata' add-on." "$LINENO" 5
-    ;;
-    esac
-  done
-
-  # Now source each add-on's configure fragment.
-  # The fragments can use $srcdir/$libc_add_on to find themselves,
-  # and test $add_ons_automatic to see if they were explicitly requested.
-  # A fragment can clear (or even change) $libc_add_on to affect
-  # whether it goes into the list to be actually used in the build.
-  use_add_ons=
-  for libc_add_on in $add_ons; do
-    # Test whether such a directory really exists.
-    # It can be absolute, or relative to $srcdir, or relative to the build dir.
-    case "$libc_add_on" in
-    /*)
-      libc_add_on_srcdir=$libc_add_on
-      ;;
-    *)
-      test -d "$srcdir/$libc_add_on" || {
-	if test -d "$libc_add_on"; then
-	  libc_add_on="`pwd`/$libc_add_on"
-	else
-	  as_fn_error $? "add-on directory \"$libc_add_on\" does not exist" "$LINENO" 5
-	fi
-      }
-      libc_add_on_srcdir=$srcdir/$libc_add_on
-      ;;
-    esac
+# A preconfigure script for a system that may or may not use fpu
+# sysdeps directories sets this to a preprocessor conditional for
+# whether to use such directories.
+with_fp_cond=1
 
-    libc_add_on_frag=$libc_add_on_srcdir/configure
-    libc_add_on_canonical=
-    libc_add_on_config_subdirs=
-    if test -r "$libc_add_on_frag"; then
-      { $as_echo "$as_me:${as_lineno-$LINENO}: running configure fragment for add-on $libc_add_on" >&5
-$as_echo "$as_me: running configure fragment for add-on $libc_add_on" >&6;}
-      libc_add_on_canonical=unknown
-      libc_add_on_subdirs=
-      . "$libc_add_on_frag"
-      test -z "$libc_add_on" || {
-	configured_add_ons="$configured_add_ons $libc_add_on"
-	if test "x$libc_add_on_canonical" = xunknown; then
-	  as_fn_error $? "fragment must set \$libc_add_on_canonical" "$LINENO" 5
-	fi
-	for d in $libc_add_on_subdirs; do
-	  case "$libc_add_on" in
-	  /*) subdir_srcdir="$libc_add_on" ;;
-	  *) subdir_srcdir="\$(..)$libc_add_on" ;;
-	  esac
-	  case "$d" in
-	  .)
-	    d="${libc_add_on_canonical:-$libc_add_on}"
-	    ;;
-	  /*)
-	    subdir_srcdir="$d"
-	    ;;
-	  *)
-	    subdir_srcdir="$subdir_srcdir/$d"
-	    ;;
-	  esac
-	  d=`echo "$d" | sed 's@/*$@@;s@^.*/@@'`
-	  add_on_subdirs="$add_on_subdirs $d"
-	  test "$subdir_srcdir" = "\$(..)$d" || config_vars="$config_vars
-$d-srcdir = $subdir_srcdir"
-	done
-	for d in $libc_add_on_config_subdirs; do
-	  case "$d" in
-	  /*) as_fn_error $? "fragment uses absolute path in \$libc_add_on_config_subdirs" "$LINENO" 5 ;;
-	  esac
-	  if test ! -d "$libc_add_on_srcdir/$d"; then
-	    as_fn_error $? "fragment wants to configure missing directory $d" "$LINENO" 5
-	  fi
-	  case "$libc_add_on" in
-	  /*) as_fn_error $? "relative path required for add-on using \$libc_add_on_config_subdirs" "$LINENO" 5 ;;
-	  esac
-	  subdirs="$subdirs $libc_add_on/$d"
-	done
-      }
-    fi
-    if test -n "$libc_add_on"; then
-      if frags=`ls -d $libc_add_on_srcdir/sysdeps/*/preconfigure 2> /dev/null`
+if frags=`ls -d $srcdir/sysdeps/*/preconfigure 2> /dev/null`
 then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking add-on $libc_add_on for preconfigure fragments" >&5
-$as_echo_n "checking add-on $libc_add_on for preconfigure fragments... " >&6; }
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sysdeps preconfigure fragments" >&5
+$as_echo_n "checking for sysdeps preconfigure fragments... " >&6; }
   for frag in $frags; do
     name=`echo "$frag" | sed 's@/[^/]*$@@;s@^.*/@@'`
     echo $ECHO_N "$name $ECHO_C" >&6
@@ -3904,22 +3839,8 @@ $as_echo_n "checking add-on $libc_add_on for preconfigure fragments... " >&6; }
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: " >&5
 $as_echo "" >&6; }
 fi
-      use_add_ons="$use_add_ons $libc_add_on"
-      add_ons_pfx="$add_ons_pfx $libc_add_on/"
-      test -z "$libc_add_on_canonical" ||
-      add_ons_sfx="$add_ons_sfx /$libc_add_on_canonical"
-    fi
-  done
-  # Use echo to strip excess whitespace.
-  add_ons="`echo $use_add_ons`"
-fi
-
-
 
 
-###
-### I put this here to prevent those annoying emails from people who cannot
-### read and try to compile glibc on unsupported platforms.  --drepper
 ###
 ### By using the undocumented --enable-hacker-mode option for configure
 ### one can skip this test to make the configuration not fail for unsupported
@@ -3930,13 +3851,12 @@ if test -z "$enable_hacker_mode" && test x"$libc_config_ok" != xyes; then
   *-linux* | *-gnu*)
     ;;
   *)
-    echo "*** The GNU C library is currently not available for this platform."
-    echo "*** So far nobody cared to port it and if there is no volunteer it"
-    echo "*** might never happen.  So, if you have interest to see glibc on"
-    echo "*** this platform visit"
-    echo "***	http://www.gnu.org/software/libc/porting.html"
-    echo "*** and join the group of porters"
-    exit 1
+    as_fn_error $? "
+*** The GNU C library is currently unavailable for this platform.
+*** If you are interested in seeing glibc on this platform visit
+*** the \"How to submit a new port\" in the wiki:
+***   https://sourceware.org/glibc/wiki/#Development
+*** and join the community!" "$LINENO" 5
     ;;
   esac
 fi
@@ -3945,15 +3865,138 @@ fi
 test -n "$base_machine" || base_machine=$machine
 
 
-# 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
-$as_echo_n "checking for assembler and linker STT_GNU_IFUNC support... " >&6; }
-if ${libc_cv_ld_gnu_indirect_function+:} false; then :
+# Determine whether to use fpu or nofpu sysdeps directories.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for use of fpu sysdeps directories" >&5
+$as_echo_n "checking for use of fpu sysdeps directories... " >&6; }
+if ${libc_cv_with_fp+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  cat > conftest.S <<EOF
-.type foo,%gnu_indirect_function
-foo:
+  cat > conftest.c <<EOF
+#if $with_fp_cond
+int dummy;
+#else
+# error "no hardware floating point"
+#endif
+EOF
+libc_cv_with_fp=no
+if ${CC-cc} $CFLAGS $CPPFLAGS -S conftest.c -o conftest.s \
+   1>&5 2>&5 ; then
+  libc_cv_with_fp=yes
+fi
+rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_with_fp" >&5
+$as_echo "$libc_cv_with_fp" >&6; }
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -fstack-protector" >&5
+$as_echo_n "checking for -fstack-protector... " >&6; }
+if ${libc_cv_ssp+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -Werror -fstack-protector -xc /dev/null -S -o /dev/null'
+  { { eval echo "\"\$as_me\":${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_ssp=yes
+else
+  libc_cv_ssp=no
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ssp" >&5
+$as_echo "$libc_cv_ssp" >&6; }
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -fstack-protector-strong" >&5
+$as_echo_n "checking for -fstack-protector-strong... " >&6; }
+if ${libc_cv_ssp_strong+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -Werror -fstack-protector-strong -xc /dev/null -S -o /dev/null'
+  { { eval echo "\"\$as_me\":${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_ssp_strong=yes
+else
+  libc_cv_ssp_strong=no
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ssp_strong" >&5
+$as_echo "$libc_cv_ssp_strong" >&6; }
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -fstack-protector-all" >&5
+$as_echo_n "checking for -fstack-protector-all... " >&6; }
+if ${libc_cv_ssp_all+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -Werror -fstack-protector-all -xc /dev/null -S -o /dev/null'
+  { { eval echo "\"\$as_me\":${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_ssp_all=yes
+else
+  libc_cv_ssp_all=no
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ssp_all" >&5
+$as_echo "$libc_cv_ssp_all" >&6; }
+
+stack_protector=
+no_stack_protector=
+if test "$libc_cv_ssp" = yes; then
+  no_stack_protector="-fno-stack-protector -DSTACK_PROTECTOR_LEVEL=0"
+  $as_echo "#define HAVE_CC_NO_STACK_PROTECTOR 1" >>confdefs.h
+
+fi
+
+if test "$enable_stack_protector" = yes && test "$libc_cv_ssp" = yes; then
+  stack_protector="-fstack-protector"
+  $as_echo "#define STACK_PROTECTOR_LEVEL 1" >>confdefs.h
+
+elif test "$enable_stack_protector" = all && test "$libc_cv_ssp_all" = yes; then
+  stack_protector="-fstack-protector-all"
+  $as_echo "#define STACK_PROTECTOR_LEVEL 2" >>confdefs.h
+
+elif test "$enable_stack_protector" = strong && test "$libc_cv_ssp_strong" = yes; then
+  stack_protector="-fstack-protector-strong"
+  $as_echo "#define STACK_PROTECTOR_LEVEL 3" >>confdefs.h
+
+else
+  stack_protector="-fno-stack-protector"
+  $as_echo "#define STACK_PROTECTOR_LEVEL 0" >>confdefs.h
+
+fi
+
+
+
+
+if test -n "$stack_protector"; then
+      no_ssp=-fno-stack-protector
+else
+  no_ssp=
+
+  if test "$enable_stack_protector" != no; then
+    as_fn_error $? "--enable-stack-protector=$enable_stack_protector specified, but specified level of stack protection is not supported by the compiler." "$LINENO" 5
+  fi
+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
+$as_echo_n "checking for assembler and linker STT_GNU_IFUNC support... " >&6; }
+if ${libc_cv_ld_gnu_indirect_function+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat > conftest.S <<EOF
+.type foo,%gnu_indirect_function
+foo:
 .globl _start
 _start:
 .globl __start
@@ -3967,7 +4010,7 @@ __start:
 EOF
 libc_cv_ld_gnu_indirect_function=no
 if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
-	    -nostartfiles -nostdlib \
+	    -nostartfiles -nostdlib $no_ssp \
 	    -o conftest conftest.S 1>&5 2>&5; then
   # Do a link to see if the backend supports IFUNC relocs.
   $READELF -r conftest 1>&5
@@ -3980,33 +4023,107 @@ fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ld_gnu_indirect_function" >&5
 $as_echo "$libc_cv_ld_gnu_indirect_function" >&6; }
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether .text pseudo-op must be used" >&5
-$as_echo_n "checking whether .text pseudo-op must be used... " >&6; }
-if ${libc_cv_dot_text+:} false; then :
+# Check if gcc supports attribute ifunc as it is used in libc_ifunc macro.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for gcc attribute ifunc support" >&5
+$as_echo_n "checking for gcc attribute ifunc support... " >&6; }
+if ${libc_cv_gcc_indirect_function+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  cat > conftest.s <<EOF
+  cat > conftest.c <<EOF
+extern int func (int);
+int used_func (int a)
+{
+  return a;
+}
+static void *resolver ()
+{
+  return &used_func;
+}
+extern __typeof (func) func __attribute__ ((ifunc ("resolver")));
+EOF
+libc_cv_gcc_indirect_function=no
+if ${CC-cc} -c conftest.c -o conftest.o 1>&5 \
+   2>&5 ; then
+  if $READELF -s conftest.o | grep IFUNC >/dev/null 2>&5; then
+    libc_cv_gcc_indirect_function=yes
+  fi
+fi
+rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_gcc_indirect_function" >&5
+$as_echo "$libc_cv_gcc_indirect_function" >&6; }
+
+# Check if linker supports textrel relocation with ifunc (used on elf/tests).
+# Note that it relies on libc_cv_ld_gnu_indirect_function test above.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the linker supports textrels along with ifunc" >&5
+$as_echo_n "checking whether the linker supports textrels along with ifunc... " >&6; }
+if ${libc_cv_textrel_ifunc+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat > conftest.S <<EOF
+.type foo,%gnu_indirect_function
+foo:
+.globl _start
+_start:
+.globl __start
+__start:
+.data
+#ifdef _LP64
+.quad foo
+#else
+.long foo
+#endif
 .text
+.globl address
+address:
+#ifdef _LP64
+.quad address
+#else
+.long address
+#endif
 EOF
-libc_cv_dot_text=
-if { ac_try='${CC-cc} $ASFLAGS -c conftest.s 1>&5'
+libc_cv_textrel_ifunc=no
+if test $libc_cv_ld_gnu_indirect_function = yes; then
+   if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostartfiles -nostdlib $no_ssp -pie -o conftest conftest.S'
   { { eval echo "\"\$as_me\":${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_dot_text=.text
+     libc_cv_textrel_ifunc=yes
+   fi
 fi
 rm -f conftest*
 fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_textrel_ifunc" >&5
+$as_echo "$libc_cv_textrel_ifunc" >&6; }
 
-if test -z "$libc_cv_dot_text"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+
+# Check if gcc warns about alias for function with incompatible types.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if compiler warns about alias for function with incompatible types" >&5
+$as_echo_n "checking if compiler warns about alias for function with incompatible types... " >&6; }
+if ${libc_cv_gcc_incompatible_alias+:} false; then :
+  $as_echo_n "(cached) " >&6
 else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
+  cat > conftest.c <<EOF
+int __redirect_foo (const void *s, int c);
+
+__typeof (__redirect_foo) *foo_impl (void) __asm__ ("foo");
+__typeof (__redirect_foo) *foo_impl (void)
+{
+  return 0;
+}
+
+extern __typeof (__redirect_foo) foo_alias __attribute__ ((alias ("foo")));
+EOF
+libc_cv_gcc_incompatible_alias=yes
+if ${CC-cc} -Werror -c conftest.c -o conftest.o 1>&5 2>&5 ; then
+  libc_cv_gcc_incompatible_alias=no
 fi
+rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_gcc_incompatible_alias" >&5
+$as_echo "$libc_cv_gcc_incompatible_alias" >&6; }
 
 if test x"$libc_cv_ld_gnu_indirect_function" != xyes; then
   if test x"$multi_arch" = xyes; then
@@ -4015,6 +4132,26 @@ if test x"$libc_cv_ld_gnu_indirect_function" != xyes; then
     multi_arch=no
   fi
 fi
+if test x"$libc_cv_gcc_indirect_function" != xyes; then
+  # GCC 8+ emits a warning for alias with incompatible types and it might
+  # fail to build ifunc resolvers aliases to either weak or internal
+  # symbols.  Disables multiarch build in this case.
+  if test x"$libc_cv_gcc_incompatible_alias" == xyes; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: gcc emits a warning for alias between functions of incompatible types" >&5
+$as_echo "$as_me: WARNING: gcc emits a warning for alias between functions of incompatible types" >&2;}
+    if test x"$multi_arch" = xyes; then
+      as_fn_error $? "--enable-multi-arch support requires a gcc with gnu-indirect-function support" "$LINENO" 5
+    fi
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Multi-arch is disabled." >&5
+$as_echo "$as_me: WARNING: Multi-arch is disabled." >&2;}
+    multi_arch=no
+  elif test x"$multi_arch" = xyes; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: --enable-multi-arch support recommends a gcc with gnu-indirect-function support.
+Please use a gcc which supports it by default or configure gcc with --enable-gnu-indirect-function" >&5
+$as_echo "$as_me: WARNING: --enable-multi-arch support recommends a gcc with gnu-indirect-function support.
+Please use a gcc which supports it by default or configure gcc with --enable-gnu-indirect-function" >&2;}
+  fi
+fi
 multi_arch_d=
 if test x"$multi_arch" != xno; then
   multi_arch_d=/multiarch
@@ -4067,7 +4204,7 @@ tail=$machine${submachine:+/$submachine}
 while m=`echo $tail | sed 's@^\(.*\)/\([^/]*\)$@& \1@'`; test -n "$m"; do
   set $m
   # Prepend the machine's FPU directory unless --without-fp.
-  if test "$with_fp" = yes; then
+  if test "$libc_cv_with_fp" = yes; then
     maybe_fpu=/fpu
   else
     maybe_fpu=/nofpu
@@ -4083,7 +4220,6 @@ done
 
 
 # Find what sysdep directories exist.
-sysnames_add_ons=
 sysnames=
 for b in $base ''; do
   for m0 in $mach ''; do
@@ -4092,34 +4228,21 @@ for b in $base ''; do
       for o in /$ostry ''; do
 	test "$o" = / && continue
 	for m in $mach ''; do
-	  for d in $add_ons_pfx ''; do
-	    for a in $add_ons_sfx ''; do
-	      try_suffix="$m0$b$v$o$m"
-	      if test -n "$try_suffix"; then
-		try_srcdir="${srcdir}/"
-		case "$d" in
-		/*) try_srcdir= ;;
-		esac
-		try="${d}sysdeps$try_suffix$a"
-		test -n "$enable_debug_configure" &&
-		echo "$0 DEBUG: try $try" >&2
-		if test -d "$try_srcdir$try"; then
-		  sysnames="$sysnames $try"
-		  { test -n "$o" || test -n "$b"; } && os_used=t
-		  { test -n "$m" || test -n "$m0"; } && machine_used=t
-		  case x${m0:-$m} in
-		  x*/$submachine) submachine_used=t ;;
-		  esac
-		  if test -n "$d"; then
-		    case "$sysnames_add_ons" in
-		    *" $d "*) ;;
-		    *|'') sysnames_add_ons="$sysnames_add_ons $d" ;;
-		    esac
-		  fi
-		fi
-	      fi
-	    done
-	  done
+	  try_suffix="$m0$b$v$o$m"
+	  if test -n "$try_suffix"; then
+	    try_srcdir="${srcdir}/"
+	    try="sysdeps$try_suffix"
+	    test -n "$enable_debug_configure" &&
+	    echo "$0 DEBUG: try $try" >&2
+	    if test -d "$try_srcdir$try"; then
+	      sysnames="$sysnames $try"
+	      { test -n "$o" || test -n "$b"; } && os_used=t
+	      { test -n "$m" || test -n "$m0"; } && machine_used=t
+	      case x${m0:-$m} in
+	      x*/$submachine) submachine_used=t ;;
+	      esac
+	    fi
+	  fi
 	done
       done
     done
@@ -4128,7 +4251,7 @@ done
 
 # If the assembler supports gnu_indirect_function symbol type and the
 # architecture supports multi-arch, we enable multi-arch by default.
-case $sysnames_add_ons$sysnames in
+case $sysnames in
 *"$multi_arch_d"*)
   ;;
 *)
@@ -4191,24 +4314,15 @@ while test $# -gt 0; do
 	  eval "${implies_type}=\"\$${implies_type} \$name_base/\$x\""
 	  found=yes
 	fi
-	for d in $add_ons_pfx ''; do
-	  try="${d}sysdeps/$x"
-	  case $d in
-	   /*) try_srcdir= ;;
-	   *) try_srcdir=$srcdir/ ;;
-	  esac
-	  test -n "$enable_debug_configure" &&
-	   echo "DEBUG: $name $implies_file $x try($d) {$try_srcdir}$try" >&2
-	  if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try;
-	  then
-	    eval "${implies_type}=\"\$${implies_type} \$try\""
-	    found=yes
-	    case "$sysnames_add_ons" in
-	    *" $d "*) ;;
-	    *|'') sysnames_add_ons="$sysnames_add_ons $d" ;;
-	    esac
-	  fi
-	done
+	try="sysdeps/$x"
+	try_srcdir=$srcdir/
+	test -n "$enable_debug_configure" &&
+	 echo "DEBUG: $name $implies_file $x try() {$try_srcdir}$try" >&2
+	if test $try != $xsrcdir$name_base/$x && test -d $try_srcdir$try;
+	then
+	  eval "${implies_type}=\"\$${implies_type} \$try\""
+	  found=yes
+	fi
 	if test $found = no; then
 	  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $name/$implies_file specifies nonexistent $x" >&5
 $as_echo "$as_me: WARNING: $name/$implies_file specifies nonexistent $x" >&2;}
@@ -4246,63 +4360,6 @@ sysnames="$names $default_sysnames"
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $default_sysnames" >&5
 $as_echo "$default_sysnames" >&6; }
 
-# Collect the list of add-ons that supply partial sysdeps trees.
-sysdeps_add_ons=
-for add_on in $add_ons; do
-  case "$add_on" in
-  /*) xsrcdir= ;;
-  *) xsrcdir="$srcdir/" ;;
-  esac
-
-  test -d "$xsrcdir$add_on/sysdeps" || {
-    case "$configured_add_ons " in
-    *" $add_on "*) ;;
-    *|'')
-      as_fn_error $? "add-on $add_on has no configure fragment or sysdeps tree" "$LINENO" 5
-      ;;
-    esac
-    continue
-  }
-
-  sysdeps_add_ons="$sysdeps_add_ons $add_on"
-  case "$sysnames_add_ons" in
-  *" $add_on/ "*) ;;
-  *|'')
-    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: add-on $add_on contributed no sysdeps directories" >&5
-$as_echo "$as_me: WARNING: add-on $add_on contributed no sysdeps directories" >&2;}
-    continue ;;
-  esac
-
-  found=no
-  for d in $sysnames; do
-    case "$d" in
-    $add_on/sysdeps/*) ;;
-    *) continue ;;
-    esac
-    (cd "$xsrcdir$d" && for f in *[!~]; do
-       case "$f" in
-       sys|bits)
-	 for ff in $f/*.h; do
-	   test -d "$ff" || { test -e "$ff" && exit 88; }
-	 done
-	 ;;
-       *)
-	 test -d "$f" || { test -e "$f" && exit 88; }
-	 ;;
-       esac
-     done)
-    if test $? -eq 88; then
-      found=yes
-      break
-    fi
-  done
-  if test $found = no; then
-    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: add-on $add_on contributed no useful sysdeps directories" >&5
-$as_echo "$as_me: WARNING: add-on $add_on contributed no useful sysdeps directories" >&2;}
-  fi
-done
-
-
 
 ### Locate tools.
 
@@ -4429,6 +4486,8 @@ OBJDUMP=`$CC -print-prog-name=objdump`
 
 OBJCOPY=`$CC -print-prog-name=objcopy`
 
+GPROF=`$CC -print-prog-name=gprof`
+
 
 # Determine whether we are using GNU binutils.
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $AS is GNU as" >&5
@@ -4469,7 +4528,7 @@ $as_echo "$libc_cv_prog_ld_gnu" >&6; }
 gnu_ld=$libc_cv_prog_ld_gnu
 
 
-# Accept binutils 2.20 or newer.
+# Accept binutils 2.25 or newer.
 for ac_prog in $AS
 do
   # Extract the first word of "$ac_prog", so it can be a program name with args.
@@ -4521,7 +4580,7 @@ $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 $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
-    2.1[0-9][0-9]*|2.[2-9][0-9]*|[3-9].*|[1-9][0-9]*)
+    2.1[0-9][0-9]*|2.2[5-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*)
        ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
     *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
 
@@ -4533,7 +4592,10 @@ if test $ac_verc_fail = yes; then
   AS=: critic_missing="$critic_missing as"
 fi
 
-for ac_prog in $LD
+
+if test -n "`$LD --version | sed -n 's/^GNU \(gold\).*$/\1/p'`"; then
+  # Accept gold 1.14 or higher
+  for ac_prog in $LD
 do
   # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
@@ -4581,10 +4643,10 @@ else
   # Found it, now check the version.
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking version of $LD" >&5
 $as_echo_n "checking version of $LD... " >&6; }
-  ac_prog_version=`$LD --version 2>&1 | sed -n 's/^.*GNU ld.* \([0-9][0-9]*\.[0-9.]*\).*$/\1/p'`
+  ac_prog_version=`$LD --version 2>&1 | sed -n 's/^.*GNU gold.* \([0-9][0-9]*\.[0-9.]*\).*$/\1/p'`
   case $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
-    2.1[0-9][0-9]*|2.[2-9][0-9]*|[3-9].*|[1-9][0-9]*)
+    1.1[4-9]*|1.[2-9][0-9]*|1.1[0-9][0-9]*|[2-9].*|[1-9][0-9]*)
        ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
     *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
 
@@ -4593,23 +4655,21 @@ $as_echo_n "checking version of $LD... " >&6; }
 $as_echo "$ac_prog_version" >&6; }
 fi
 if test $ac_verc_fail = yes; then
-  LD=: critic_missing="$critic_missing ld"
+  LD=: critic_missing="$critic_missing GNU gold"
 fi
 
-
-# These programs are version sensitive.
-
-for ac_prog in ${ac_tool_prefix}gcc ${ac_tool_prefix}cc
+else
+  for ac_prog in $LD
 do
   # Extract the first word of "$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 :
+if ${ac_cv_prog_LD+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  if test -n "$CC"; then
-  ac_cv_prog_CC="$CC" # Let the user override the test.
+  if test -n "$LD"; then
+  ac_cv_prog_LD="$LD" # Let the user override the test.
 else
 as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
@@ -4618,7 +4678,7 @@ do
   test -z "$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_CC="$ac_prog"
+    ac_cv_prog_LD="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
   fi
@@ -4628,29 +4688,29 @@ IFS=$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 "$CC" >&6; }
+LD=$ac_cv_prog_LD
+if test -n "$LD"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LD" >&5
+$as_echo "$LD" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
 $as_echo "no" >&6; }
 fi
 
 
-  test -n "$CC" && break
+  test -n "$LD" && break
 done
 
-if test -z "$CC"; then
+if test -z "$LD"; 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'`
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking version of $LD" >&5
+$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 $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
-    4.[4-9].* | 4.[1-9][0-9].* | [5-9].* )
+    2.1[0-9][0-9]*|2.2[5-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*)
        ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
     *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
 
@@ -4659,9 +4719,13 @@ $as_echo_n "checking version of $CC... " >&6; }
 $as_echo "$ac_prog_version" >&6; }
 fi
 if test $ac_verc_fail = yes; then
-  critic_missing="$critic_missing gcc"
+  LD=: critic_missing="$critic_missing GNU ld"
+fi
+
 fi
 
+# These programs are version sensitive.
+
 for ac_prog in gnumake gmake make
 do
   # Extract the first word of "$ac_prog", so it can be a program name with args.
@@ -4713,7 +4777,7 @@ $as_echo_n "checking version of $MAKE... " >&6; }
   ac_prog_version=`$MAKE --version 2>&1 | sed -n 's/^.*GNU Make[^0-9]*\([0-9][0-9.]*\).*$/\1/p'`
   case $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
-    3.79* | 3.[89]* | [4-9].* | [1-9][0-9]*)
+    [4-9].* | [1-9][0-9]*)
        ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
     *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
 
@@ -4840,7 +4904,7 @@ $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;;
 
@@ -4978,17 +5042,17 @@ if test $ac_verc_fail = yes; then
   critic_missing="$critic_missing gawk"
 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=$2
+for ac_prog in bison
+do
+  # Extract the first word of "$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_prog_NM+:} false; then :
+if ${ac_cv_prog_BISON+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  if test -n "$NM"; then
-  ac_cv_prog_NM="$NM" # Let the user override the test.
+  if test -n "$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 $PATH
@@ -4997,7 +5061,7 @@ do
   test -z "$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_NM="${ac_tool_prefix}nm"
+    ac_cv_prog_BISON="$ac_prog"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
   fi
@@ -5007,56 +5071,152 @@ IFS=$as_save_IFS
 
 fi
 fi
-NM=$ac_cv_prog_NM
-if test -n "$NM"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $NM" >&5
-$as_echo "$NM" >&6; }
+BISON=$ac_cv_prog_BISON
+if test -n "$BISON"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $BISON" >&5
+$as_echo "$BISON" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
 $as_echo "no" >&6; }
 fi
 
 
-fi
-if test -z "$ac_cv_prog_NM"; then
-  ac_ct_NM=$NM
-  # Extract the first word of "nm", so it can be a program name with args.
-set dummy nm; 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_NM+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test -n "$ac_ct_NM"; then
-  ac_cv_prog_ac_ct_NM="$ac_ct_NM" # Let the user override the test.
-else
-as_save_IFS=$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_NM="nm"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
+  test -n "$BISON" && break
 done
-  done
-IFS=$as_save_IFS
 
+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 $ac_verc_fail = yes; then
+  critic_missing="$critic_missing bison"
 fi
-ac_ct_NM=$ac_cv_prog_ac_ct_NM
-if test -n "$ac_ct_NM"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_NM" >&5
-$as_echo "$ac_ct_NM" >&6; }
+
+
+{ $as_echo "$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
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
 
-  if test "x$ac_ct_NM" = x; then
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+#if !defined __GNUC__ || __GNUC__ < 6 || (__GNUC__ == 6 && __GNUC_MINOR__ < 2)
+#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
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_NM+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$NM"; then
+  ac_cv_prog_NM="$NM" # Let the user override the test.
+else
+as_save_IFS=$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_NM="${ac_tool_prefix}nm"
+    $as_echo "$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
+NM=$ac_cv_prog_NM
+if test -n "$NM"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $NM" >&5
+$as_echo "$NM" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_NM"; then
+  ac_ct_NM=$NM
+  # Extract the first word of "nm", so it can be a program name with args.
+set dummy nm; 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_NM+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_NM"; then
+  ac_cv_prog_ac_ct_NM="$ac_ct_NM" # Let the user override the test.
+else
+as_save_IFS=$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_NM="nm"
+    $as_echo "$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_NM=$ac_cv_prog_ac_ct_NM
+if test -n "$ac_ct_NM"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_NM" >&5
+$as_echo "$ac_ct_NM" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_NM" = x; then
     NM="false"
   else
     case $cross_compiling:$ac_tool_warned in
@@ -5142,17 +5302,84 @@ else
   AUTOCONF=no
 fi
 
+# Check for python3 if available, or else python.
+for ac_prog in python3 python
+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_PYTHON_PROG+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$PYTHON_PROG"; then
+  ac_cv_prog_PYTHON_PROG="$PYTHON_PROG" # Let the user override the test.
+else
+as_save_IFS=$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_PYTHON_PROG="$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
+PYTHON_PROG=$ac_cv_prog_PYTHON_PROG
+if test -n "$PYTHON_PROG"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PYTHON_PROG" >&5
+$as_echo "$PYTHON_PROG" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$PYTHON_PROG" && break
+done
+
+if test -z "$PYTHON_PROG"; then
+  ac_verc_fail=yes
+else
+  # Found it, now check the version.
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking version of $PYTHON_PROG" >&5
+$as_echo_n "checking version of $PYTHON_PROG... " >&6; }
+  ac_prog_version=`$PYTHON_PROG --version 2>&1 | sed -n 's/^.*Python \([0-9][0-9.]*\).*$/\1/p'`
+  case $ac_prog_version in
+    '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
+    3.[4-9]*|3.[1-9][0-9]*|[4-9].*|[1-9][0-9]*)
+       ac_prog_version="$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 $ac_verc_fail = yes; then
+  critic_missing="$critic_missing python"
+fi
+
+PYTHON="$PYTHON_PROG -B"
+
+
 test -n "$critic_missing" && as_fn_error $? "
 *** These critical programs are missing or too old:$critic_missing
 *** Check the INSTALL file for required versions." "$LINENO" 5
 
 test -n "$aux_missing" && { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING:
 *** These auxiliary programs are missing or incompatible versions:$aux_missing
-*** some features will be disabled.
+*** some features or tests will be disabled.
 *** Check the INSTALL file for required versions." >&5
 $as_echo "$as_me: WARNING:
 *** These auxiliary programs are missing or incompatible versions:$aux_missing
-*** some features will be disabled.
+*** some features or tests will be disabled.
 *** Check the INSTALL file for required versions." >&2;}
 
 # if using special system headers, find out the compiler's sekrit
@@ -5178,6 +5405,21 @@ fi
 
 
 
+# Obtain some C++ header file paths.  This is used to make a local
+# copy of those headers in Makerules.
+if test -n "$CXX"; then
+  find_cxx_header () {
+    echo "#include <$1>" | $CXX -M -MP -x c++ - 2>/dev/null \
+	 | sed -n "\,$1:,{s/:\$//;p}"
+  }
+  CXX_CSTDLIB_HEADER="$(find_cxx_header cstdlib)"
+  CXX_CMATH_HEADER="$(find_cxx_header cmath)"
+  CXX_BITS_STD_ABS_H="$(find_cxx_header bits/std_abs.h)"
+fi
+
+
+
+
 # Test if LD_LIBRARY_PATH contains the notation for the current directory
 # since this would lead to problems installing/building glibc.
 # LD_LIBRARY_PATH contains the current directory if one of the following
@@ -5204,21 +5446,6 @@ as_fn_error $? "
 *** and run configure again." "$LINENO" 5
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether GCC supports -static-libgcc" >&5
-$as_echo_n "checking whether GCC supports -static-libgcc... " >&6; }
-if ${libc_cv_gcc_static_libgcc+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if $CC -v -static-libgcc 2>&1 | grep 'unrecognized option.*static-libgcc' >/dev/null; then
-  libc_cv_gcc_static_libgcc=
-else
-  libc_cv_gcc_static_libgcc=-static-libgcc
-fi
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_gcc_static_libgcc" >&5
-$as_echo "$libc_cv_gcc_static_libgcc" >&6; }
-
-
 # Extract the first word of "bash", so it can be a program name with args.
 set dummy bash; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
@@ -5348,114 +5575,6 @@ $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
-{ $as_echo "$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 :
-  $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 $as_dummy
-do
-  IFS=$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_path_BISON="$as_dir/$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 "$ac_cv_path_BISON" && ac_cv_path_BISON="no"
-  ;;
-esac
-fi
-BISON=$ac_cv_path_BISON
-if test -n "$BISON"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $BISON" >&5
-$as_echo "$BISON" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-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; }
-if ${libc_cv_friendly_stddef+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#define __need_size_t
-#define __need_wchar_t
-#include <stddef.h>
-#define __need_NULL
-#include <stddef.h>
-int
-main ()
-{
-size_t size; wchar_t wchar;
-#ifdef offsetof
-#error stddef.h ignored __need_*
-#endif
-if (&size == NULL || &wchar == NULL) abort ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  libc_cv_friendly_stddef=yes
-else
-  libc_cv_friendly_stddef=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_friendly_stddef" >&5
-$as_echo "$libc_cv_friendly_stddef" >&6; }
-if test $libc_cv_friendly_stddef = yes; then
-  config_vars="$config_vars
-override stddef.h = # The installed <stddef.h> seems to be libc-friendly."
-fi
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we need to use -P to assemble .S files" >&5
-$as_echo_n "checking whether we need to use -P to assemble .S files... " >&6; }
-if ${libc_cv_need_minus_P+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat > conftest.S <<EOF
-#include "confdefs.h"
-/* Nothing whatsoever.  */
-EOF
-if { ac_try='${CC-cc} $CPPFLAGS $ASFLAGS -c conftest.S 1>&5'
-  { { eval echo "\"\$as_me\":${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_need_minus_P=no
-else
-  libc_cv_need_minus_P=yes
-fi
-rm -f conftest*
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_need_minus_P" >&5
-$as_echo "$libc_cv_need_minus_P" >&6; }
-if test $libc_cv_need_minus_P = yes; then
-  config_vars="$config_vars
-asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives."
-fi
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for .set assembler directive" >&5
 $as_echo_n "checking for .set assembler directive... " >&6; }
@@ -5463,7 +5582,7 @@ if ${libc_cv_asm_set_directive+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat > conftest.s <<EOF
-${libc_cv_dot_text}
+.text
 foo:
 .set glibc_conftest_frobozz,foo
 .globl glibc_conftest_frobozz
@@ -5475,7 +5594,7 @@ extern int glibc_conftest_frobozz;
 void _start() { glibc_conftest_frobozz = 1; }
 EOF
 if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
-	    -nostartfiles -nostdlib \
+	    -nostartfiles -nostdlib $no_ssp \
 	    -o conftest conftest.s conftest1.c 1>&5 2>&5; then
   libc_cv_asm_set_directive=yes
 else
@@ -5490,175 +5609,72 @@ if test $libc_cv_asm_set_directive = yes; then
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for assembler gnu_unique_object symbol type" >&5
-$as_echo_n "checking for assembler gnu_unique_object symbol type... " >&6; }
-if ${libc_cv_asm_unique_object+:} false; 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 :
   $as_echo_n "(cached) " >&6
 else
-  cat > conftest.s <<EOF
-${libc_cv_dot_text}
-_sym:
-.type _sym, %gnu_unique_object
-EOF
-if ${CC-cc} -c $ASFLAGS conftest.s 1>&5 2>&5; then
-  libc_cv_asm_unique_object=yes
-else
-  libc_cv_asm_unique_object=no
-fi
-rm -f conftest*
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_asm_unique_object" >&5
-$as_echo "$libc_cv_asm_unique_object" >&6; }
-if test $libc_cv_asm_unique_object = yes; then
-  $as_echo "#define HAVE_ASM_UNIQUE_OBJECT 1" >>confdefs.h
-
-fi
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for .previous assembler directive" >&5
-$as_echo_n "checking for .previous assembler directive... " >&6; }
-if ${libc_cv_asm_previous_directive+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat > conftest.s <<EOF
-.section foo_section
-.previous
-EOF
-if { ac_try='${CC-cc} -c $ASFLAGS conftest.s 1>&5'
-  { { eval echo "\"\$as_me\":${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_previous_directive=yes
-else
-  libc_cv_asm_previous_directive=no
-fi
-rm -f conftest*
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_asm_previous_directive" >&5
-$as_echo "$libc_cv_asm_previous_directive" >&6; }
-if test $libc_cv_asm_previous_directive = yes; then
-  $as_echo "#define HAVE_ASM_PREVIOUS_DIRECTIVE 1" >>confdefs.h
-
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for .popsection assembler directive" >&5
-$as_echo_n "checking for .popsection assembler directive... " >&6; }
-if ${libc_cv_asm_popsection_directive+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-    cat > conftest.s <<EOF
-.pushsection foo_section
-.popsection
-EOF
-  if { ac_try='${CC-cc} -c $ASFLAGS conftest.s 1>&5'
-  { { eval echo "\"\$as_me\":${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_popsection_directive=yes
-  else
-    libc_cv_asm_popsection_directive=no
-  fi
-  rm -f conftest*
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_asm_popsection_directive" >&5
-$as_echo "$libc_cv_asm_popsection_directive" >&6; }
-  if test $libc_cv_asm_popsection_directive = yes; then
-    $as_echo "#define HAVE_ASM_POPSECTION_DIRECTIVE 1" >>confdefs.h
-
-  fi
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for .protected and .hidden assembler directive" >&5
-$as_echo_n "checking for .protected and .hidden assembler directive... " >&6; }
-if ${libc_cv_asm_protected_directive+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat > conftest.s <<EOF
-.protected foo
-foo:
-.hidden bar
-bar:
+  cat > conftest.c <<EOF
+		int bar __attribute__ ((visibility ("protected"))) = 1;
 EOF
-if { ac_try='${CC-cc} -c $ASFLAGS conftest.s 1>&5'
+		libc_cv_protected_data=no
+		if { ac_try='${CC-cc} -nostdlib -nostartfiles $no_ssp -fPIC -shared conftest.c -o conftest.so'
   { { eval echo "\"\$as_me\":${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
-  libc_cv_asm_protected_directive=yes
-else
-  as_fn_error $? "assembler support for symbol visibility is required" "$LINENO" 5
-fi
-rm -f conftest*
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_asm_protected_directive" >&5
-$as_echo "$libc_cv_asm_protected_directive" >&6; }
-
-if test $libc_cv_asm_protected_directive = yes; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether __attribute__((visibility())) is supported" >&5
-$as_echo_n "checking whether __attribute__((visibility())) is supported... " >&6; }
-if ${libc_cv_visibility_attribute+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat > conftest.c <<EOF
-		  int foo __attribute__ ((visibility ("hidden"))) = 1;
-		  int bar __attribute__ ((visibility ("protected"))) = 1;
+		  cat > conftest.c <<EOF
+		  extern int bar;
+		  int main (void) { return bar; }
 EOF
-		  libc_cv_visibility_attribute=no
-		  if { ac_try='${CC-cc} -Werror -S conftest.c -o conftest.s 1>&5'
+		  if { ac_try='${CC-cc} -nostdlib -nostartfiles $no_ssp conftest.c -o conftest conftest.so'
   { { eval echo "\"\$as_me\":${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
-		    if grep '\.hidden.*foo' conftest.s >/dev/null; then
-		      if grep '\.protected.*bar' conftest.s >/dev/null; then
-			libc_cv_visibility_attribute=yes
-		      fi
-		    fi
+		    libc_cv_protected_data=yes
 		  fi
-		  rm -f conftest.{c,s}
+		fi
+		rm -f conftest.*
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_visibility_attribute" >&5
-$as_echo "$libc_cv_visibility_attribute" >&6; }
-  if test $libc_cv_visibility_attribute != yes; then
-    as_fn_error $? "compiler support for visibility attribute is required" "$LINENO" 5
-  fi
-fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_protected_data" >&5
+$as_echo "$libc_cv_protected_data" >&6; }
+
 
-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 :
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking linker support for INSERT in linker script" >&5
+$as_echo_n "checking linker support for INSERT in linker script... " >&6; }
+if ${libc_cv_insert+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat > conftest.c <<EOF
-		  int foo (int x);
-		  int bar (int x) __asm__ ("foo") __attribute__ ((visibility ("hidden")));
-		  int bar (int x) { return x; }
+		const int __attribute__ ((section(".bar"))) bar = 0x12345678;
+		int test (void) { return bar; }
 EOF
-		  libc_cv_broken_visibility_attribute=yes
-		  if { ac_try='${CC-cc} -Werror -S conftest.c -o conftest.s 1>&5'
+		cat > conftest.t <<EOF
+		SECTIONS
+		{
+		  .bar : { *(.bar) }
+		}
+		INSERT AFTER .rela.dyn;
+EOF
+		libc_cv_insert=no
+		if { ac_try='${CC-cc} -nostdlib -nostartfiles $no_ssp -fPIC -shared conftest.c -Wl,-T,conftest.t -o conftest.so'
   { { eval echo "\"\$as_me\":${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
-		    if grep '\.hidden[ 	_]foo' conftest.s >/dev/null; then
-		      libc_cv_broken_visibility_attribute=no
-		    fi
-		  fi
-		  rm -f conftest.c conftest.s
+		  libc_cv_insert=yes
+		fi
+		rm -f conftest.*
 
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_broken_visibility_attribute" >&5
-$as_echo "$libc_cv_broken_visibility_attribute" >&6; }
-  if test $libc_cv_broken_visibility_attribute = yes; then
-    as_fn_error $? "working compiler support for visibility attribute is required" "$LINENO" 5
-  fi
-fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_insert" >&5
+$as_echo "$libc_cv_insert" >&6; }
+
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for broken __attribute__((alias()))" >&5
 $as_echo_n "checking for broken __attribute__((alias()))... " >&6; }
@@ -5694,65 +5710,25 @@ if test $libc_cv_broken_alias_attribute = yes; then
   as_fn_error $? "working alias attribute support required" "$LINENO" 5
 fi
 
-if test $libc_cv_visibility_attribute = yes; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to put _rtld_local into .sdata section" >&5
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to put _rtld_local into .sdata section" >&5
 $as_echo_n "checking whether to put _rtld_local into .sdata section... " >&6; }
 if ${libc_cv_have_sdata_section+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   echo "int i;" > conftest.c
-		  libc_cv_have_sdata_section=no
-		  if ${CC-cc} $LDFLAGS -fPIC -shared -Wl,--verbose conftest.c -o conftest.so 2>&1 \
-		     | grep '\.sdata' >/dev/null; then
-		    libc_cv_have_sdata_section=yes
-		  fi
-		  rm -f conftest.c conftest.so
+		libc_cv_have_sdata_section=no
+		if ${CC-cc} $LDFLAGS -fPIC -shared -Wl,--verbose conftest.c -o conftest.so 2>&1 \
+		   | grep '\.sdata' >/dev/null; then
+		  libc_cv_have_sdata_section=yes
+		fi
+		rm -f conftest.c conftest.so
 
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_have_sdata_section" >&5
 $as_echo "$libc_cv_have_sdata_section" >&6; }
-  if test $libc_cv_have_sdata_section = yes; then
-    $as_echo "#define HAVE_SDATA_SECTION 1" >>confdefs.h
+if test $libc_cv_have_sdata_section = yes; then
+  $as_echo "#define HAVE_SDATA_SECTION 1" >>confdefs.h
 
-  fi
-fi
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for .preinit_array/.init_array/.fini_array support" >&5
-$as_echo_n "checking for .preinit_array/.init_array/.fini_array support... " >&6; }
-if ${libc_cv_initfini_array+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat > conftest.c <<EOF
-int _start (void) { return 0; }
-int __start (void) { return 0; }
-
-int foo (void) { return 1; }
-int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;
-
-EOF
-if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest
-		       conftest.c -static -nostartfiles -nostdlib
-		       1>&5'
-  { { eval echo "\"\$as_me\":${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 :
-  if $READELF -S conftest | fgrep INIT_ARRAY > /dev/null; then
-    libc_cv_initfini_array=yes
-  else
-    libc_cv_initfini_array=no
-  fi
-else
-  libc_cv_initfini_array=no
-fi
-rm -f conftest*
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_initfini_array" >&5
-$as_echo "$libc_cv_initfini_array" >&6; }
-if test $libc_cv_initfini_array != yes; then
-  as_fn_error $? "Need linker with .init_array/.fini_array support." "$LINENO" 5
 fi
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to use .ctors/.dtors header and trailer" >&5
@@ -5769,7 +5745,7 @@ __attribute__ ((constructor)) void ctor (void) { asm (""); }
 __attribute__ ((destructor))  void dtor (void) { asm (""); }
 
 EOF
-if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest
+if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp -o conftest
 		       conftest.c -static -nostartfiles -nostdlib
 		       1>&5'
   { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
@@ -5833,129 +5809,6 @@ if test $libc_cv_cc_with_libunwind = yes; then
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for linker that supports -z nodelete" >&5
-$as_echo_n "checking for linker that supports -z nodelete... " >&6; }
-libc_linker_feature=no
-if test x"$gnu_ld" = x"yes"; then
-  libc_linker_check=`$LD -v --help 2>/dev/null | grep "\-z nodelete"`
-  if test -n "$libc_linker_check"; then
-    cat > conftest.c <<EOF
-int _start (void) { return 42; }
-EOF
-    if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
-				-Wl,--enable-new-dtags,-z,nodelete -nostdlib -nostartfiles
-				-fPIC -shared -o conftest.so conftest.c
-				1>&5'
-  { { eval echo "\"\$as_me\":${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_linker_feature=yes
-    fi
-    rm -f conftest*
-  fi
-fi
-if test $libc_linker_feature = yes; then
-  libc_cv_z_nodelete=yes
-else
-  as_fn_error $? "linker with -z nodelete support required" "$LINENO" 5
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_linker_feature" >&5
-$as_echo "$libc_linker_feature" >&6; }
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for linker that supports -z nodlopen" >&5
-$as_echo_n "checking for linker that supports -z nodlopen... " >&6; }
-libc_linker_feature=no
-if test x"$gnu_ld" = x"yes"; then
-  libc_linker_check=`$LD -v --help 2>/dev/null | grep "\-z nodlopen"`
-  if test -n "$libc_linker_check"; then
-    cat > conftest.c <<EOF
-int _start (void) { return 42; }
-EOF
-    if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
-				-Wl,--enable-new-dtags,-z,nodlopen -nostdlib -nostartfiles
-				-fPIC -shared -o conftest.so conftest.c
-				1>&5'
-  { { eval echo "\"\$as_me\":${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_linker_feature=yes
-    fi
-    rm -f conftest*
-  fi
-fi
-if test $libc_linker_feature = yes; then
-  libc_cv_z_nodlopen=yes
-else
-  as_fn_error $? "linker with -z nodlopen support required" "$LINENO" 5
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_linker_feature" >&5
-$as_echo "$libc_linker_feature" >&6; }
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for linker that supports -z initfirst" >&5
-$as_echo_n "checking for linker that supports -z initfirst... " >&6; }
-libc_linker_feature=no
-if test x"$gnu_ld" = x"yes"; then
-  libc_linker_check=`$LD -v --help 2>/dev/null | grep "\-z initfirst"`
-  if test -n "$libc_linker_check"; then
-    cat > conftest.c <<EOF
-int _start (void) { return 42; }
-EOF
-    if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
-				-Wl,--enable-new-dtags,-z,initfirst -nostdlib -nostartfiles
-				-fPIC -shared -o conftest.so conftest.c
-				1>&5'
-  { { eval echo "\"\$as_me\":${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_linker_feature=yes
-    fi
-    rm -f conftest*
-  fi
-fi
-if test $libc_linker_feature = yes; then
-  libc_cv_z_initfirst=yes
-else
-  as_fn_error $? "linker with -z initfirst support required" "$LINENO" 5
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_linker_feature" >&5
-$as_echo "$libc_linker_feature" >&6; }
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -Bgroup option" >&5
-$as_echo_n "checking for -Bgroup option... " >&6; }
-if ${libc_cv_Bgroup+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat > conftest.c <<EOF
-int _start (void) { return 42; }
-EOF
-if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
-			    -fPIC -shared -o conftest.so conftest.c
-			    -Wl,-Bgroup -nostdlib 1>&5'
-  { { eval echo "\"\$as_me\":${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_Bgroup=yes
-else
-  libc_cv_Bgroup=no
-fi
-rm -f conftest*
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_Bgroup" >&5
-$as_echo "$libc_cv_Bgroup" >&6; }
-
-
 ASFLAGS_config=
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether --noexecstack is desirable for .S files" >&5
 $as_echo_n "checking whether --noexecstack is desirable for .S files... " >&6; }
@@ -6005,7 +5858,7 @@ extern int mumble;
 int foo (void) { return bar (mumble); }
 EOF
 if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
-			-fPIC -shared -o conftest.so conftest.c
+			-fPIC -shared $no_ssp -o conftest.so conftest.c
 			-nostdlib -nostartfiles
 			-Wl,-z,combreloc 1>&5'
   { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
@@ -6014,7 +5867,7 @@ if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
   $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; }
 then
-  if $READELF -S conftest.so | grep '\.rel\(a\|\)\.dyn' > /dev/null; then
+  if $READELF -S conftest.so | grep -E '.rela?.dyn' > /dev/null; then
     libc_cv_z_combreloc=yes
   else
     libc_cv_z_combreloc=no
@@ -6041,7 +5894,7 @@ if test x"$gnu_ld" = x"yes"; then
     cat > conftest.c <<EOF
 int _start (void) { return 42; }
 EOF
-    if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
+    if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp
 				-Wl,-z,execstack -nostdlib -nostartfiles
 				-fPIC -shared -o conftest.so conftest.c
 				1>&5'
@@ -6065,6 +5918,62 @@ fi
 $as_echo "$libc_linker_feature" >&6; }
 
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for linker that supports --no-dynamic-linker" >&5
+$as_echo_n "checking for linker that supports --no-dynamic-linker... " >&6; }
+libc_linker_feature=no
+if test x"$gnu_ld" = x"yes"; then
+  libc_linker_check=`$LD -v --help 2>/dev/null | grep "\--no-dynamic-linker"`
+  if test -n "$libc_linker_check"; then
+    cat > conftest.c <<EOF
+int _start (void) { return 42; }
+EOF
+    if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp
+				-Wl,--no-dynamic-linker -nostdlib -nostartfiles
+				-fPIC -shared -o conftest.so conftest.c
+				1>&5'
+  { { eval echo "\"\$as_me\":${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_linker_feature=yes
+    fi
+    rm -f conftest*
+  fi
+fi
+if test $libc_linker_feature = yes; then
+  libc_cv_no_dynamic_linker=yes
+else
+  libc_cv_no_dynamic_linker=no
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_linker_feature" >&5
+$as_echo "$libc_linker_feature" >&6; }
+config_vars="$config_vars
+have-no-dynamic-linker = $libc_cv_no_dynamic_linker"
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -static-pie" >&5
+$as_echo_n "checking for -static-pie... " >&6; }
+if ${libc_cv_static_pie+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if { ac_try='${CC-cc} -static-pie -xc /dev/null -S -o /dev/null'
+  { { 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_static_pie=yes
+else
+  libc_cv_static_pie=no
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_static_pie" >&5
+$as_echo "$libc_cv_static_pie" >&6; }
+config_vars="$config_vars
+have-static-pie = $libc_cv_static_pie"
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -fpie" >&5
 $as_echo_n "checking for -fpie... " >&6; }
 if ${libc_cv_fpie+:} false; then :
@@ -6095,7 +6004,7 @@ else
   cat > conftest.c <<EOF
 int _start (void) { return 42; }
 EOF
-if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
+if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp
 			    -fPIC -shared -o conftest.so conftest.c
 			    -Wl,--hash-style=both -nostdlib 1>&5'
   { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
@@ -6170,12 +6079,45 @@ $ac_try"
       ;;
     esac
   fi
-  rm -f conftest*
+  rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_use_default_link" >&5
+$as_echo "$libc_cv_use_default_link" >&6; }
+  use_default_link=$libc_cv_use_default_link
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for GLOB_DAT reloc" >&5
+$as_echo_n "checking for GLOB_DAT reloc... " >&6; }
+if ${libc_cv_has_glob_dat+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat > conftest.c <<EOF
+extern int mumble;
+int foo (void) { return mumble; }
+EOF
+if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
+			-fPIC -shared -o conftest.so conftest.c
+			-nostdlib -nostartfiles $no_ssp
+			1>&5'
+  { { eval echo "\"\$as_me\":${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
+  if $READELF -rW conftest.so | grep '_GLOB_DAT' > /dev/null; then
+    libc_cv_has_glob_dat=yes
+  else
+    libc_cv_has_glob_dat=no
+  fi
+else
+  libc_cv_has_glob_dat=no
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_use_default_link" >&5
-$as_echo "$libc_cv_use_default_link" >&6; }
-  use_default_link=$libc_cv_use_default_link
+rm -f conftest*
 fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_has_glob_dat" >&5
+$as_echo "$libc_cv_has_glob_dat" >&6; }
+
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking linker output format" >&5
 $as_echo_n "checking linker output format... " >&6; }
@@ -6183,7 +6125,7 @@ if ${libc_cv_output_format+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   if libc_cv_output_format=`
-${CC-cc} -nostartfiles -nostdlib -Wl,--print-output-format 2>&5`
+${CC-cc} -nostartfiles -nostdlib $no_ssp -Wl,--print-output-format 2>&5`
 then
   :
 else
@@ -6226,62 +6168,37 @@ else
 fi
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -fstack-protector" >&5
-$as_echo_n "checking for -fstack-protector... " >&6; }
-if ${libc_cv_ssp+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -Werror -fstack-protector -xc /dev/null -S -o /dev/null'
-  { { eval echo "\"\$as_me\":${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_ssp=yes
-else
-  libc_cv_ssp=no
-fi
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ssp" >&5
-$as_echo "$libc_cv_ssp" >&6; }
-
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -fgnu89-inline" >&5
-$as_echo_n "checking for -fgnu89-inline... " >&6; }
-if ${libc_cv_gnu89_inline+:} false; then :
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -mtls-dialect=gnu2" >&5
+$as_echo_n "checking for -mtls-dialect=gnu2... " >&6; }
+if ${libc_cv_mtls_dialect_gnu2+:} false; then :
   $as_echo_n "(cached) " >&6
 else
   cat > conftest.c <<EOF
-int foo;
-#ifdef __GNUC_GNU_INLINE__
-main () { return 0;}
-#else
-#error
-#endif
+__thread int i;
+void foo (void)
+{
+  i = 10;
+}
 EOF
-if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -S -std=gnu99 -fgnu89-inline
-			    -o conftest.s conftest.c 1>&5'
+if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -S -fPIC -mtls-dialect=gnu2
+		   conftest.c 1>&5'
   { { eval echo "\"\$as_me\":${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_gnu89_inline=yes
+  libc_cv_mtls_dialect_gnu2=yes
 else
-  libc_cv_gnu89_inline=no
+  libc_cv_mtls_dialect_gnu2=no
 fi
 rm -f conftest*
 fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_gnu89_inline" >&5
-$as_echo "$libc_cv_gnu89_inline" >&6; }
-if test $libc_cv_gnu89_inline = yes; then
-  gnu89_inline=-fgnu89-inline
-else
-  gnu89_inline=
-fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_mtls_dialect_gnu2" >&5
+$as_echo "$libc_cv_mtls_dialect_gnu2" >&6; }
 
+config_vars="$config_vars
+have-mtls-dialect-gnu2 = $libc_cv_mtls_dialect_gnu2"
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether cc puts quotes around section names" >&5
 $as_echo_n "checking whether cc puts quotes around section names... " >&6; }
@@ -6311,133 +6228,6 @@ if test $libc_cv_have_section_quotes = yes; then
 
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for assembler .weak directive" >&5
-$as_echo_n "checking for assembler .weak directive... " >&6; }
-if ${libc_cv_asm_weak_directive+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat > conftest.s <<EOF
-${libc_cv_dot_text}
-.globl foo
-foo:
-.weak foo
-.weak bar; bar = foo
-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_weak_directive=yes
-else
-  libc_cv_asm_weak_directive=no
-fi
-rm -f conftest*
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_asm_weak_directive" >&5
-$as_echo "$libc_cv_asm_weak_directive" >&6; }
-
-if test $libc_cv_asm_weak_directive = no; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for assembler .weakext directive" >&5
-$as_echo_n "checking for assembler .weakext directive... " >&6; }
-if ${libc_cv_asm_weakext_directive+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat > conftest.s <<EOF
-${libc_cv_dot_text}
-.globl foo
-foo:
-.weakext bar foo
-.weakext baz
-.globl baz
-baz:
-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_weakext_directive=yes
-  else
-    libc_cv_asm_weakext_directive=no
-  fi
-  rm -f conftest*
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_asm_weakext_directive" >&5
-$as_echo "$libc_cv_asm_weakext_directive" >&6; }
-
-fi # no .weak
-
-if test $libc_cv_asm_weak_directive = yes; then
-  $as_echo "#define HAVE_ASM_WEAK_DIRECTIVE 1" >>confdefs.h
-
-elif test $libc_cv_asm_weakext_directive = yes; then
-  $as_echo "#define HAVE_ASM_WEAKEXT_DIRECTIVE 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 :
-  $as_echo_n "(cached) " >&6
-else
-  cat > conftest.c <<\EOF
-_start () {}
-int __eh_pc;
-__throw () {}
-EOF
-if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
-			    -nostdlib -nostartfiles -Wl,--no-whole-archive
-			    -o conftest conftest.c 1>&5'
-  { { eval echo "\"\$as_me\":${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_ld_no_whole_archive=yes
-else
-  libc_cv_ld_no_whole_archive=no
-fi
-rm -f conftest*
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_ld_no_whole_archive" >&5
-$as_echo "$libc_cv_ld_no_whole_archive" >&6; }
-if test $libc_cv_ld_no_whole_archive = no; then
-  as_fn_error $? "support for --no-whole-archive is needed" "$LINENO" 5
-fi
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for gcc -fexceptions" >&5
-$as_echo_n "checking for gcc -fexceptions... " >&6; }
-if ${libc_cv_gcc_exceptions+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat > conftest.c <<\EOF
-_start () {}
-int __eh_pc;
-__throw () {}
-EOF
-if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
-			    -nostdlib -nostartfiles -fexceptions
-			    -o conftest conftest.c 1>&5'
-  { { eval echo "\"\$as_me\":${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_gcc_exceptions=yes
-else
-  libc_cv_gcc_exceptions=no
-fi
-rm -f conftest*
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_gcc_exceptions" >&5
-$as_echo "$libc_cv_gcc_exceptions" >&6; }
-if test $libc_cv_gcc_exceptions = yes; then
-  exceptions=-fexceptions
-fi
-
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for __builtin_memset" >&5
 $as_echo_n "checking for __builtin_memset... " >&6; }
 if ${libc_cv_gcc_builtin_memset+:} false; then :
@@ -6449,7 +6239,7 @@ void zero (void *x)
   __builtin_memset (x, 0, 1000);
 }
 EOF
-if { ac_try='${CC-cc} -O3 -S conftest.c -o - | fgrep "memset" > /dev/null'
+if { ac_try='${CC-cc} -O3 -S conftest.c -o - | grep -F "memset" > /dev/null'
   { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6481,7 +6271,7 @@ char *foo (const char *a, const char *b)
   return __builtin_strstr (a, b);
 }
 EOF
-if { ac_try='${CC-cc} -O3 -S conftest.c -o - | fgrep "my_strstr" > /dev/null'
+if { ac_try='${CC-cc} -O3 -S conftest.c -o - | grep -F "my_strstr" > /dev/null'
   { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6500,58 +6290,6 @@ if test "$libc_cv_gcc_builtin_redirection" = no; then
   as_fn_error $? "support for the symbol redirection needed" "$LINENO" 5
 fi
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for __thread" >&5
-$as_echo_n "checking for __thread... " >&6; }
-if ${libc_cv_gcc___thread+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat > conftest.c <<\EOF
-__thread int a = 42;
-EOF
-if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c >&5'
-  { { eval echo "\"\$as_me\":${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_gcc___thread=yes
-else
-  libc_cv_gcc___thread=no
-fi
-rm -f conftest*
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_gcc___thread" >&5
-$as_echo "$libc_cv_gcc___thread" >&6; }
-if test "$libc_cv_gcc___thread" = no; then
-  as_fn_error $? "support for the __thread keyword is required" "$LINENO" 5
-fi
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for tls_model attribute" >&5
-$as_echo_n "checking for tls_model attribute... " >&6; }
-if ${libc_cv_gcc_tls_model_attr+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat > conftest.c <<\EOF
-extern __thread int a __attribute__((tls_model ("initial-exec")));
-EOF
-if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -S -Werror conftest.c >&5'
-  { { eval echo "\"\$as_me\":${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_gcc_tls_model_attr=yes
-else
-  libc_cv_gcc_tls_model_attr=no
-fi
-rm -f conftest*
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_gcc_tls_model_attr" >&5
-$as_echo "$libc_cv_gcc_tls_model_attr" >&6; }
-if test "$libc_cv_gcc_tls_model_attr" = no; then
-  as_fn_error $? "support for the tls_model attribute is required" "$LINENO" 5
-fi
-
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for compiler option to disable generation of FMA instructions" >&5
 $as_echo_n "checking for compiler option to disable generation of FMA instructions... " >&6; }
 if ${libc_cv_cc_nofma+:} false; then :
@@ -6831,43 +6569,6 @@ $as_echo "#define HAVE_LIBCAP 1" >>confdefs.h
 fi
 
 
-
-# The cast to long int works around a bug in the HP C Compiler
-# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
-# declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
-# This bug is HP SR number 8606223364.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of long double" >&5
-$as_echo_n "checking size of long double... " >&6; }
-if ${ac_cv_sizeof_long_double+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (long double))" "ac_cv_sizeof_long_double"        "$ac_includes_default"; then :
-
-else
-  if test "$ac_cv_type_long_double" = yes; then
-     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error 77 "cannot compute sizeof (long double)
-See \`config.log' for more details" "$LINENO" 5; }
-   else
-     ac_cv_sizeof_long_double=0
-   fi
-fi
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_long_double" >&5
-$as_echo "$ac_cv_sizeof_long_double" >&6; }
-
-
-
-cat >>confdefs.h <<_ACEOF
-#define SIZEOF_LONG_DOUBLE $ac_cv_sizeof_long_double
-_ACEOF
-
-
-sizeof_long_double=$ac_cv_sizeof_long_double
-
-
 CPPUNDEFS=
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _FORTIFY_SOURCE predefine" >&5
 $as_echo_n "checking for _FORTIFY_SOURCE predefine... " >&6; }
@@ -6902,58 +6603,6 @@ if test $libc_cv_predef_fortify_source = yes; then
 fi
 
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC implicitly enables -fstack-protector" >&5
-$as_echo_n "checking whether $CC implicitly enables -fstack-protector... " >&6; }
-if ${libc_cv_predef_stack_protector+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-extern void foobar (char *);
-int
-main ()
-{
-char large_array[2048]; foobar (large_array);
-  ;
-  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='$libc_undefs'"
-# On some architectures, there are architecture-specific undefined
-# symbols (resolved by the linker), so filter out unknown symbols.
-# This will fail to produce the correct result if the compiler
-# defaults to -fstack-protector but this produces an undefined symbol
-# other than __stack_chk_fail.  However, compilers like that have not
-# been encountered in practice.
-libc_undefs=`echo "$libc_undefs" | egrep '^(foobar|__stack_chk_fail)$'`
-case "$libc_undefs" in
-foobar) libc_cv_predef_stack_protector=no ;;
-'__stack_chk_fail
-foobar') libc_cv_predef_stack_protector=yes ;;
-*) as_fn_error $? "unexpected symbols in test: $libc_undefs" "$LINENO" 5 ;;
-esac
-else
-  as_fn_error $? "test compilation failed" "$LINENO" 5
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_predef_stack_protector" >&5
-$as_echo "$libc_cv_predef_stack_protector" >&6; }
-libc_extra_cflags=
-if test $libc_cv_predef_stack_protector = yes; then
-  libc_extra_cflags="$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).
@@ -6967,7 +6616,7 @@ old_CFLAGS="$CFLAGS"
 old_LDFLAGS="$LDFLAGS"
 old_LIBS="$LIBS"
 CFLAGS="$CFLAGS -fPIC"
-LDFLAGS="$LDFLAGS -nostdlib -nostartfiles -shared"
+LDFLAGS="$LDFLAGS -nostdlib -nostartfiles -shared $no_ssp"
 LIBS=
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -6981,7 +6630,7 @@ 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
+  if $READELF -r conftest | grep -F __ehdr_start >/dev/null; then
 		  libc_cv_ehdr_start=broken
 		else
 		  libc_cv_ehdr_start=yes
@@ -7044,6 +6693,61 @@ if test $libc_cv_builtin_trap = yes; then
 
 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
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C++ compiler supports thread_local" >&5
+$as_echo_n "checking whether the C++ compiler supports thread_local... " >&6; }
+if ${libc_cv_cxx_thread_local+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+old_CXXFLAGS="$CXXFLAGS"
+CXXFLAGS="$CXXFLAGS -std=gnu++11"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <thread>
+
+// Compiler support.
+struct S
+{
+  S ();
+  ~S ();
+};
+thread_local S s;
+S * get () { return &s; }
+
+// libstdc++ support.
+#ifndef _GLIBCXX_HAVE___CXA_THREAD_ATEXIT_IMPL
+#error __cxa_thread_atexit_impl not supported
+#endif
+
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"; then :
+  libc_cv_cxx_thread_local=yes
+else
+  libc_cv_cxx_thread_local=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+CXXFLAGS="$old_CXXFLAGS"
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cxx_thread_local" >&5
+$as_echo "$libc_cv_cxx_thread_local" >&6; }
+
+
+ac_ext=c
+ac_cpp='$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
+
+
 ### End of automated tests.
 ### Now run sysdeps configure fragments.
 
@@ -7069,6 +6773,12 @@ $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"
+
 
 
 
@@ -7083,6 +6793,13 @@ fi
 if test x"$libc_cv_ld_gnu_indirect_function" = xyes; then
   $as_echo "#define HAVE_IFUNC 1" >>confdefs.h
 
+fi
+config_vars="$config_vars
+have-ifunc = $libc_cv_ld_gnu_indirect_function"
+
+if test x"$libc_cv_gcc_indirect_function" = xyes; then
+  $as_echo "#define HAVE_GCC_IFUNC 1" >>confdefs.h
+
 fi
 
 # This is far from the AC_ARG_ENABLE that sets it so that a sysdeps
@@ -7096,27 +6813,6 @@ if test "x$build_nscd" = xdefault; then
   build_nscd=$use_nscd
 fi
 
-# Test for old glibc 2.0.x headers so that they can be removed properly
-# Search only in includedir.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for old glibc 2.0.x headers" >&5
-$as_echo_n "checking for old glibc 2.0.x headers... " >&6; }
-if eval test -f "${includedir}/elfclass.h" -a -f "${includedir}/fcntlbits.h"
-then
-  old_glibc_headers=yes
-else
-  old_glibc_headers=no
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $old_glibc_headers" >&5
-$as_echo "$old_glibc_headers" >&6; }
-if test ${old_glibc_headers} = yes; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: *** During \"make install\" old headers from glibc 2.0.x will" >&5
-$as_echo "$as_me: WARNING: *** During \"make install\" old headers from glibc 2.0.x will" >&2;}
-  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: *** be removed." >&5
-$as_echo "$as_me: WARNING: *** be removed." >&2;}
-fi
-
-
-
 
 
 
@@ -7154,6 +6850,46 @@ 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_cc_pie_default+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  libc_cv_cc_pie_default=yes
+cat > conftest.c <<EOF
+#if defined __PIE__ || defined __pie__ || defined PIE || defined pie
+# error PIE is default.
+#endif
+EOF
+if eval "${CC-cc} -S conftest.c 2>&5 1>&5"; then
+  libc_cv_cc_pie_default=no
+fi
+rm -f conftest.*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_pie_default" >&5
+$as_echo "$libc_cv_cc_pie_default" >&6; }
+libc_cv_pie_default=$libc_cv_cc_pie_default
+
+
+
+# Set the `multidir' variable by grabbing the variable from the compiler.
+# We do it once and save the result in a generated makefile.
+libc_cv_multidir=`${CC-cc} $CFLAGS $CPPFLAGS -print-multi-directory`
+
+
+if test "$static_pie" = yes; then
+  # The linker must support --no-dynamic-linker.
+  if test "$libc_cv_no_dynamic_linker" != yes; then
+    as_fn_error $? "linker support for --no-dynamic-linker needed" "$LINENO" 5
+  fi
+  # Default to PIE.
+  libc_cv_pie_default=yes
+  $as_echo "#define ENABLE_STATIC_PIE 1" >>confdefs.h
+
+fi
+config_vars="$config_vars
+enable-static-pie = $static_pie"
+
 
 
 
@@ -7736,7 +7472,7 @@ $config_headers
 Configuration commands:
 $config_commands
 
-Report bugs to <http://sourceware.org/bugzilla/>.
+Report bugs to <https://sourceware.org/bugzilla/>.
 GNU C Library home page: <http://www.gnu.org/software/glibc/>.
 General help using GNU software: <http://www.gnu.org/gethelp/>."