22 lines
785 B
Plaintext
22 lines
785 B
Plaintext
dnl Available from the GNU Autoconf Macro Archive at:
|
|
dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_static_cast.html
|
|
dnl
|
|
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
|
|
])
|