22 lines
785 B
Plaintext
22 lines
785 B
Plaintext
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dnl Available from the GNU Autoconf Macro Archive at:
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dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_static_cast.html
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dnl
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AC_DEFUN([AC_CXX_STATIC_CAST],
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[AC_CACHE_CHECK(whether the compiler supports static_cast<>,
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ac_cv_cxx_static_cast,
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[AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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AC_TRY_COMPILE([#include <typeinfo>
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class Base { public : Base () {} virtual void f () = 0; };
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class Derived : public Base { public : Derived () {} virtual void f () {} };
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int g (Derived&) { return 0; }],[
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Derived d; Base& b = d; Derived& s = static_cast<Derived&> (b); return g (s);],
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ac_cv_cxx_static_cast=yes, ac_cv_cxx_static_cast=no)
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AC_LANG_RESTORE
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])
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if test "$ac_cv_cxx_static_cast" = yes; then
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AC_DEFINE(HAVE_STATIC_CAST,,
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[define if the compiler supports static_cast<>])
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fi
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])
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