Remove init_array / fini_array configure test.

There is a configure test "for .preinit_array/.init_array/.fini_array
support".  Support for this feature was added in binutils 2.13, so the
configure test is obsolete; this patch removes it.

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

	* configure.ac (libc_cv_initfini_array): Remove configure test.
	* configure: Regenerated.

ChangeLog

@@ -1,3 +1,8 @@
+2015-11-02  Joseph Myers  <joseph@codesourcery.com>
+
+	* configure.ac (libc_cv_initfini_array): Remove configure test.
+	* configure: Regenerated.
+
 2015-10-29  Joseph Myers  <joseph@codesourcery.com>
 
 	[BZ #19189]

configure

@@ -5394,44 +5394,6 @@ if test $libc_cv_have_sdata_section = yes; then
 
 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
 $as_echo_n "checking whether to use .ctors/.dtors header and trailer... " >&6; }
 if ${libc_cv_ctors_header+:} false; then :

configure.ac

@@ -1161,23 +1161,6 @@ if test $libc_cv_have_sdata_section = yes; then
   AC_DEFINE(HAVE_SDATA_SECTION)
 fi
 
-AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support,
-	       libc_cv_initfini_array, [dnl
-LIBC_TRY_LINK_STATIC([
-int foo (void) { return 1; }
-int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;
-],
-  [if $READELF -S conftest | fgrep INIT_ARRAY > /dev/null; then
-    libc_cv_initfini_array=yes
-  else
-    libc_cv_initfini_array=no
-  fi],
-  [libc_cv_initfini_array=no])
-])
-if test $libc_cv_initfini_array != yes; then
-  AC_MSG_ERROR([Need linker with .init_array/.fini_array support.])
-fi
-
 AC_CACHE_CHECK(whether to use .ctors/.dtors header and trailer,
 	       libc_cv_ctors_header, [dnl
   libc_cv_ctors_header=yes