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Autoconf Macro: ac_cxx_static_cast
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<h1>
ac_cxx_static_cast
</h1>
<h2>
Synopsis
</h2>
<p class="indent" style="white-space:nowrap;">
<code>AC_CXX_STATIC_CAST</code>
</p>
<h2>
Description
</h2>
<div class="indent">
<p>
If the compiler supports static_cast<>, define HAVE_STATIC_CAST.
</p>
</div>
<h2>
Author
</h2>
<p class="indent">
Todd Veldhuizen, Luc Maisonobe <luc@spaceroots.org>
</p>
<h2>
Last Modified
</h2>
<p class="indent">
2004-02-04
</p>
<h2>
M4 Source Code
</h2>
<div class="indent">
<pre class="m4source">
AC_DEFUN([AC_CXX_STATIC_CAST],
[AC_CACHE_CHECK(whether the compiler supports static_cast<>,
ac_cv_cxx_static_cast,
[AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_COMPILE([#include <typeinfo>
class Base { public : Base () {} virtual void f () = 0; };
class Derived : public Base { public : Derived () {} virtual void f () {} };
int g (Derived&) { return 0; }],[
Derived d; Base& b = d; Derived& s = static_cast<Derived&> (b); return g (s);],
ac_cv_cxx_static_cast=yes, ac_cv_cxx_static_cast=no)
AC_LANG_RESTORE
])
if test "$ac_cv_cxx_static_cast" = yes; then
AC_DEFINE(HAVE_STATIC_CAST,,
[define if the compiler supports static_cast<>])
fi
])
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