Macro: ac_cxx_new_for_scoping

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Synopsis

  `AC_CXX_NEW_FOR_SCOPING`

Version

  1.1.1.1 (2001/07/26) C++_Support @ ac-archive-0.5.39

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
      ])