Macro: ac_cxx_new_for_scoping

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# ac_cxx_new_for_scoping

## Synopsis

`AC_CXX_NEW_FOR_SCOPING`

## Version

1.1.1.1 (2001/07/26) C++_Support @ ac-archive-0.5.32

## Author

Luc Maisonobe

## Description

If the compiler accepts the new for scoping rules (the scope of a variable declared inside the parentheses is restricted to the for-body), define HAVE_NEW_FOR_SCOPING.

## M4 Source Code

    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
    ])