Rename AC_ prefixes to AX_ (only in names of aa macros!).

1 files changed, 41 insertions, 0 deletions

diff --git a/m4/ax_cxx_reinterpret_cast.m4 b/m4/ax_cxx_reinterpret_cast.m4
new file mode 100644
index 0000000..8158d98
--- /dev/null
+++ b/m4/ax_cxx_reinterpret_cast.m4
@@ -0,0 +1,41 @@
+# ===========================================================================
+#     http://www.nongnu.org/autoconf-archive/ax_cxx_reinterpret_cast.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_CXX_REINTERPRET_CAST
+#
+# DESCRIPTION
+#
+#   If the compiler supports reinterpret_cast<>, define
+#   HAVE_REINTERPRET_CAST.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Todd Veldhuizen
+#   Copyright (c) 2008 Luc Maisonobe <luc@spaceroots.org>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved.
+
+AC_DEFUN([AX_CXX_REINTERPRET_CAST],
+[AC_CACHE_CHECK(whether the compiler supports reinterpret_cast<>,
+ac_cv_cxx_reinterpret_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 () {} };
+class Unrelated { public : Unrelated () {} };
+int g (Unrelated&) { return 0; }],[
+Derived d;Base& b=d;Unrelated& e=reinterpret_cast<Unrelated&>(b);return g(e);],
+ ac_cv_cxx_reinterpret_cast=yes, ac_cv_cxx_reinterpret_cast=no)
+ AC_LANG_RESTORE
+])
+if test "$ac_cv_cxx_reinterpret_cast" = yes; then
+  AC_DEFINE(HAVE_REINTERPRET_CAST,,
+            [define if the compiler supports reinterpret_cast<>])
+fi
+])