Remove cpuid.h configure tests.

There are configure tests for the cpuid.h header for x86 / x86_64.
GCC 4.3 and later install this header, so those tests are obsolete.
This patch removes them.

Tested for x86_64 and x86 (testsuite, and that installed shared
libraries are unchanged by the patch).

	* sysdeps/i386/configure.ac (cpuid.h): Do not test for header.
	* sysdeps/i386/configure: Regenerated.
	* sysdeps/x86_64/configure.ac (cpuid.h): Do not test for header.
	* sysdeps/x86_64/configure: Regenerated.

5 files changed, 5 insertions, 92 deletions

diff --git a/ChangeLog b/ChangeLog
index d1aeb06ee9..ab88beee2c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2015-10-29  Joseph Myers  <joseph@codesourcery.com>
 
+	* sysdeps/i386/configure.ac (cpuid.h): Do not test for header.
+	* sysdeps/i386/configure: Regenerated.
+	* sysdeps/x86_64/configure.ac (cpuid.h): Do not test for header.
+	* sysdeps/x86_64/configure: Regenerated.
+
 	* configure.ac (libc_cv_asm_protected_directive): Remove configure
 	test.
 	(libc_cv_visibility_attribute): Likewise.
diff --git a/sysdeps/i386/configure b/sysdeps/i386/configure
index 9ae13d6d69..9515719daa 100644
--- a/sysdeps/i386/configure
+++ b/sysdeps/i386/configure
@@ -1,34 +1,3 @@
-
-# ac_fn_c_check_header_compile LINENO HEADER VAR INCLUDES
-# -------------------------------------------------------
-# Tests whether HEADER exists and can be compiled using the include files in
-# INCLUDES, setting the cache variable VAR accordingly.
-ac_fn_c_check_header_compile ()
-{
-  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
-$as_echo_n "checking for $2... " >&6; }
-if eval \${$3+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-$4
-#include <$2>
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  eval "$3=yes"
-else
-  eval "$3=no"
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-eval ac_res=\$$3
-	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
-$as_echo "$ac_res" >&6; }
-  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
-
-} # ac_fn_c_check_header_compile
 # This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
  # Local configure fragment for sysdeps/i386.
 
@@ -81,17 +50,6 @@ fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_compiler_builtin_inlined" >&5
 $as_echo "$libc_compiler_builtin_inlined" >&6; }
 
-
-ac_fn_c_check_header_compile "$LINENO" "cpuid.h" "ac_cv_header_cpuid_h" "/* No default includes.  */
-"
-if test "x$ac_cv_header_cpuid_h" = xyes; then :
-
-else
-  as_fn_error $? "gcc must provide the <cpuid.h> header" "$LINENO" 5
-fi
-
-
-
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for Intel MPX support" >&5
 $as_echo_n "checking for Intel MPX support... " >&6; }
 if ${libc_cv_asm_mpx+:} false; then :
diff --git a/sysdeps/i386/configure.ac b/sysdeps/i386/configure.ac
index 609f147089..f8f9e44909 100644
--- a/sysdeps/i386/configure.ac
+++ b/sysdeps/i386/configure.ac
@@ -30,10 +30,6 @@ LIBC_COMPILER_BUILTIN_INLINED(
 *** Please use host i786, i686, i586, or i486.
 *** For example: /source/glibc/configure CFLAGS='-O2 -march=i686' ...])])
 
-AC_CHECK_HEADER([cpuid.h], ,
-  [AC_MSG_ERROR([gcc must provide the <cpuid.h> header])],
-  [/* No default includes.  */])
-
 dnl Check whether asm supports Intel MPX
 AC_CACHE_CHECK(for Intel MPX support, libc_cv_asm_mpx, [dnl
 cat > conftest.s <<\EOF
diff --git a/sysdeps/x86_64/configure b/sysdeps/x86_64/configure
index 15058e2db3..c72b9d3184 100644
--- a/sysdeps/x86_64/configure
+++ b/sysdeps/x86_64/configure
@@ -1,48 +1,6 @@
-
-# ac_fn_c_check_header_compile LINENO HEADER VAR INCLUDES
-# -------------------------------------------------------
-# Tests whether HEADER exists and can be compiled using the include files in
-# INCLUDES, setting the cache variable VAR accordingly.
-ac_fn_c_check_header_compile ()
-{
-  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
-$as_echo_n "checking for $2... " >&6; }
-if eval \${$3+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-$4
-#include <$2>
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  eval "$3=yes"
-else
-  eval "$3=no"
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-eval ac_res=\$$3
-	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
-$as_echo "$ac_res" >&6; }
-  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
-
-} # ac_fn_c_check_header_compile
 # This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
  # Local configure fragment for sysdeps/x86_64.
 
-
-ac_fn_c_check_header_compile "$LINENO" "cpuid.h" "ac_cv_header_cpuid_h" "/* No default includes.  */
-"
-if test "x$ac_cv_header_cpuid_h" = xyes; then :
-
-else
-  as_fn_error $? "gcc must provide the <cpuid.h> header" "$LINENO" 5
-fi
-
-
-
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for AVX512 support in assembler" >&5
 $as_echo_n "checking for AVX512 support in assembler... " >&6; }
 if ${libc_cv_asm_avx512+:} false; then :
diff --git a/sysdeps/x86_64/configure.ac b/sysdeps/x86_64/configure.ac
index e2fe3da326..37b1059af3 100644
--- a/sysdeps/x86_64/configure.ac
+++ b/sysdeps/x86_64/configure.ac
@@ -1,10 +1,6 @@
 GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
 # Local configure fragment for sysdeps/x86_64.
 
-AC_CHECK_HEADER([cpuid.h], ,
-  [AC_MSG_ERROR([gcc must provide the <cpuid.h> header])],
-  [/* No default includes.  */])
-
 dnl Check if asm supports AVX512.
 AC_CACHE_CHECK(for AVX512 support in assembler, libc_cv_asm_avx512, [dnl
 cat > conftest.s <<\EOF