crossconfig.m4 (*-linux*): Add link-check for memalign.

2016-12-01  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * crossconfig.m4 (*-linux*): Add link-check for memalign.
        * configure: Regenerated.

From-SVN: r243095

libstdc++-v3/ChangeLog

-2016-11-31  Tim Shen  <timshen@google.com>
+2016-12-01  Bernd Edlinger  <bernd.edlinger@hotmail.de>
+
+	* crossconfig.m4 (*-linux*): Add link-check for memalign.
+	* configure: Regenerated.
+
+2016-12-01  Tim Shen  <timshen@google.com>
 
 	PR libstdc++/71500
 	* include/bits/regex.h (basic_regex::basic_regex): Use ECMAScript

libstdc++-v3/configure

@@ -59826,6 +59826,19 @@ _ACEOF
 fi
 done
 
+    for ac_func in aligned_alloc posix_memalign memalign _aligned_malloc
+do :
+  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
+ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
+eval as_val=\$$as_ac_var
+   if test "x$as_val" = x""yes; then :
+  cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
 
 
 

libstdc++-v3/crossconfig.m4

@@ -157,6 +157,7 @@ case "${host}" in
     AC_DEFINE(_GLIBCXX_USE_RANDOM_TR1)
     GCC_CHECK_TLS
     AC_CHECK_FUNCS(__cxa_thread_atexit_impl)
+    AC_CHECK_FUNCS(aligned_alloc posix_memalign memalign _aligned_malloc)
     AM_ICONV
     ;;
   *-mingw32*)