dnl Available from the GNU Autoconf Macro Archive at:
dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_new_for_scoping.html
dnl
AC_DEFUN([AC_CXX_NEW_FOR_SCOPING],
[AC_CACHE_CHECK(whether the compiler accepts the new for scoping rules,
ac_cv_cxx_new_for_scoping,
[AC_LANG_SAVE
 AC_LANG_CPLUSPLUS
 AC_TRY_COMPILE(,[
  int z = 0;
  for (int i = 0; i < 10; ++i)
    z = z + i;
  for (int i = 0; i < 10; ++i)
    z = z - i;
  return z;],
 ac_cv_cxx_new_for_scoping=yes, ac_cv_cxx_new_for_scoping=no)
 AC_LANG_RESTORE
])
if test "$ac_cv_cxx_new_for_scoping" = yes; then
  AC_DEFINE(HAVE_NEW_FOR_SCOPING,,[define if the compiler accepts the new for scoping rules])
fi
])