Macro: ac_cxx_const_cast

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# ac_cxx_const_cast

## Synopsis

`AC_CXX_CONST_CAST`

## Version

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

## Author

Luc Maisonobe

## Description

If the compiler supports const_cast<>, define HAVE_CONST_CAST.

## M4 Source Code

    AC_DEFUN([AC_CXX_CONST_CAST],
    [AC_CACHE_CHECK(whether the compiler supports const_cast<>,
    ac_cv_cxx_const_cast,
    [AC_LANG_SAVE
     AC_LANG_CPLUSPLUS
     AC_TRY_COMPILE(,[int x = 0;const int& y = x;int& z = const_cast<int&>(y);return z;],
     ac_cv_cxx_const_cast=yes, ac_cv_cxx_const_cast=no)
     AC_LANG_RESTORE
    ])
    if test "$ac_cv_cxx_const_cast" = yes; then
      AC_DEFINE(HAVE_CONST_CAST,,[define if the compiler supports const_cast<>])
    fi
    ])