Require binutils 2.25 or later to build glibc.

This patch implements a requirement of binutils >= 2.25 (up from 2.22)
to build glibc.  Tests for 2.24 or later on x86_64 and s390 are
removed.  It was already the case, as indicated by buildbot results,
that 2.24 was too old for building tests for 32-bit x86 (produced
internal linker errors linking elf/tst-gnu2-tls1mod.so).  I don't know
if any configure tests for binutils features are obsolete given the
increased version requirement.

Tested for x86_64.

	* configure.ac (AS): Require binutils 2.25 or later.
	(LD): Likewise.
	* configure: Regenerated.
	* sysdeps/s390/configure.ac (AS): Remove version check.
	* sysdeps/s390/configure: Regenerated.
	* sysdeps/x86_64/configure.ac (AS): Remove version check.
	* sysdeps/x86_64/configure: Regenerated.
	* manual/install.texi (Tools for Compilation): Document
	requirement for binutils 2.25 or later.
	* INSTALL: Regenerated.

10 files changed, 20 insertions, 145 deletions

diff --git a/ChangeLog b/ChangeLog
index dc781f94d3..a1558d5bc5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,16 @@
+2017-06-28  Joseph Myers  <joseph@codesourcery.com>
+
+	* configure.ac (AS): Require binutils 2.25 or later.
+	(LD): Likewise.
+	* configure: Regenerated.
+	* sysdeps/s390/configure.ac (AS): Remove version check.
+	* sysdeps/s390/configure: Regenerated.
+	* sysdeps/x86_64/configure.ac (AS): Remove version check.
+	* sysdeps/x86_64/configure: Regenerated.
+	* manual/install.texi (Tools for Compilation): Document
+	requirement for binutils 2.25 or later.
+	* INSTALL: Regenerated.
+
 2017-06-28  H.J. Lu  <hongjiu.lu@intel.com>
 
 	[BZ #14995]
diff --git a/INSTALL b/INSTALL
index 4e05e9922b..5c745244a6 100644
--- a/INSTALL
+++ b/INSTALL
@@ -448,7 +448,7 @@ build the GNU C Library:
      Check the FAQ for any special compiler issues on particular
      platforms.
 
-   * GNU 'binutils' 2.22 or later
+   * GNU 'binutils' 2.25 or later
 
      You must use GNU 'binutils' (as and ld) to build the GNU C Library.
      No other assembler or linker has the necessary functionality at the
diff --git a/NEWS b/NEWS
index 22c43f5977..ba3e77b66a 100644
--- a/NEWS
+++ b/NEWS
@@ -129,6 +129,9 @@ Version 2.26
   C Library is GCC 4.9.  Older GCC versions, and non-GNU compilers, can
   still be used to compile programs using the GNU C Library.
 
+* The minimum GNU Binutils version that can be used to build this version of
+  the GNU C Library is Binutils 2.25.
+
 * Support is added, on powerpc64le, x86_64, x86 and ia64, for interfaces
   supporting the _Float128 type from ISO/IEC TS 18661-3:2015.  Most of the
   interfaces are taken from TS 18661-3.  The type-generic macros in <math.h>
diff --git a/configure b/configure
index b55fc92c53..8e5c5bdde0 100755
--- a/configure
+++ b/configure
@@ -4780,7 +4780,7 @@ $as_echo_n "checking version of $LD... " >&6; }
   ac_prog_version=`$LD --version 2>&1 | sed -n 's/^.*GNU ld.* \([0-9][0-9]*\.[0-9.]*\).*$/\1/p'`
   case $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
-    2.1[0-9][0-9]*|2.2[2-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*)
+    2.1[0-9][0-9]*|2.2[5-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*)
        ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
     *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
 
diff --git a/configure.ac b/configure.ac
index 5f62ecb718..7e03019c4f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1086,7 +1086,7 @@ if test -n "`$LD --version | sed -n 's/^GNU \(gold\).*$/\1/p'`"; then
 else
   AC_CHECK_PROG_VER(LD, $LD, --version,
 		    [GNU ld.* \([0-9][0-9]*\.[0-9.]*\)],
-		    [2.1[0-9][0-9]*|2.2[2-9]*|2.[3-9][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]*],
 		    LD=: critic_missing="$critic_missing GNU ld")
 fi
 
diff --git a/manual/install.texi b/manual/install.texi
index ff5661a4fd..03eb2dd93b 100644
--- a/manual/install.texi
+++ b/manual/install.texi
@@ -493,7 +493,7 @@ You can use whatever compiler you like to compile programs that use
 Check the FAQ for any special compiler issues on particular platforms.
 
 @item
-GNU @code{binutils} 2.22 or later
+GNU @code{binutils} 2.25 or later
 
 You must use GNU @code{binutils} (as and ld) to build @theglibc{}.
 No other assembler or linker has the necessary functionality at the
diff --git a/sysdeps/s390/configure b/sysdeps/s390/configure
index 347ac28528..d4a4a3dcf8 100644
--- a/sysdeps/s390/configure
+++ b/sysdeps/s390/configure
@@ -4,71 +4,6 @@
 $as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h
 
 
-for ac_prog in $AS
-do
-  # Extract the first word of "$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_AS+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test -n "$AS"; then
-  ac_cv_prog_AS="$AS" # Let the user override the test.
-else
-as_save_IFS=$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_AS="$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
-AS=$ac_cv_prog_AS
-if test -n "$AS"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AS" >&5
-$as_echo "$AS" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-  test -n "$AS" && break
-done
-
-if test -z "$AS"; then
-  ac_verc_fail=yes
-else
-  # Found it, now check the version.
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking version of $AS" >&5
-$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 $ac_prog_version in
-    '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
-    2.2[4-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*)
-       ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
-    *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
-
-  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 The program AS is required in version >= 2.24 for target S390."
-fi
-
-
-
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for __builtin_tbegin" >&5
 $as_echo_n "checking for __builtin_tbegin... " >&6; }
 if ${libc_cv_gcc_builtin_tbegin+:} false; then :
diff --git a/sysdeps/s390/configure.ac b/sysdeps/s390/configure.ac
index 8a782e7c3a..7d0b5ce46f 100644
--- a/sysdeps/s390/configure.ac
+++ b/sysdeps/s390/configure.ac
@@ -5,12 +5,6 @@ dnl It is always possible to access static and hidden symbols in an
 dnl position independent way.
 AC_DEFINE(PI_STATIC_AND_HIDDEN)
 
-dnl Accept as 2.24 or newer.
-AC_CHECK_PROG_VER(AS, $AS, --version,
-		  [GNU assembler.* \([0-9]*\.[0-9.]*\)],
-		  [2.2[4-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*], critic_missing="$critic_missing The program AS is required in version >= 2.24 for target S390.")
-
-
 AC_CACHE_CHECK(for __builtin_tbegin, libc_cv_gcc_builtin_tbegin, [dnl
 cat > conftest.c <<\EOF
 #include <htmintrin.h>
diff --git a/sysdeps/x86_64/configure b/sysdeps/x86_64/configure
index 2d14c344df..efef46b1b7 100644
--- a/sysdeps/x86_64/configure
+++ b/sysdeps/x86_64/configure
@@ -1,70 +1,6 @@
 # This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
  # Local configure fragment for sysdeps/x86_64.
 
-for ac_prog in $AS
-do
-  # Extract the first word of "$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_AS+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test -n "$AS"; then
-  ac_cv_prog_AS="$AS" # Let the user override the test.
-else
-as_save_IFS=$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_AS="$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
-AS=$ac_cv_prog_AS
-if test -n "$AS"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AS" >&5
-$as_echo "$AS" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-  test -n "$AS" && break
-done
-
-if test -z "$AS"; then
-  ac_verc_fail=yes
-else
-  # Found it, now check the version.
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking version of $AS" >&5
-$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 $ac_prog_version in
-    '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
-    2.2[4-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*)
-       ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
-    *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
-
-  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 The program AS is required in version >= 2.24 for target x86_64."
-fi
-
-
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for AVX512DQ support in assembler" >&5
 $as_echo_n "checking for AVX512DQ support in assembler... " >&6; }
 if ${libc_cv_asm_avx512dq+:} false; then :
diff --git a/sysdeps/x86_64/configure.ac b/sysdeps/x86_64/configure.ac
index 7d8aaafc0c..fa86e953ee 100644
--- a/sysdeps/x86_64/configure.ac
+++ b/sysdeps/x86_64/configure.ac
@@ -1,12 +1,6 @@
 GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
 # Local configure fragment for sysdeps/x86_64.
 
-dnl Accept as 2.24 or newer for AVX512 load and store.
-AC_CHECK_PROG_VER(AS, $AS, --version,
-		  [GNU assembler.* \([0-9]*\.[0-9.]*\)],
-		  [2.2[4-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*],
-		  critic_missing="$critic_missing The program AS is required in version >= 2.24 for target x86_64.")
-
 dnl Check if asm supports AVX512DQ.
 AC_CACHE_CHECK(for AVX512DQ support in assembler, libc_cv_asm_avx512dq, [dnl
 cat > conftest.s <<\EOF