Allow ruby versions 3.2 and 3.4 for installation

libs/libruby/ruby/internal/core/rfile.h

@@ -0,0 +1,51 @@
+#ifndef RBIMPL_RFILE_H                               /*-*-C++-*-vi:se ft=cpp:*/
+#define RBIMPL_RFILE_H
+/**
+ * @file
+ * @author     Ruby developers <ruby-core@ruby-lang.org>
+ * @copyright  This  file  is   a  part  of  the   programming  language  Ruby.
+ *             Permission  is hereby  granted,  to  either redistribute  and/or
+ *             modify this file, provided that  the conditions mentioned in the
+ *             file COPYING are met.  Consult the file for details.
+ * @warning    Symbols   prefixed  with   either  `RBIMPL`   or  `rbimpl`   are
+ *             implementation details.   Don't take  them as canon.  They could
+ *             rapidly appear then vanish.  The name (path) of this header file
+ *             is also an  implementation detail.  Do not expect  it to persist
+ *             at the place it is now.  Developers are free to move it anywhere
+ *             anytime at will.
+ * @note       To  ruby-core:  remember  that   this  header  can  be  possibly
+ *             recursively included  from extension  libraries written  in C++.
+ *             Do not  expect for  instance `__VA_ARGS__` is  always available.
+ *             We assume C99  for ruby itself but we don't  assume languages of
+ *             extension libraries.  They could be written in C++98.
+ * @brief      Defines struct ::RFile.
+ */
+#include "ruby/internal/core/rbasic.h"
+#include "ruby/internal/cast.h"
+
+/* rb_io_t is in ruby/io.h.  The header file has historically not been included
+ * into ruby/ruby.h.  We follow that tradition. */
+struct rb_io_t;
+
+/**
+ * Ruby's File  and IO.  Ruby's  IO are not  just file descriptors.   They have
+ * buffers.   They also  have  encodings.  Various  information are  controlled
+ * using this struct.
+ */
+struct RFile {
+
+    /** Basic part, including flags and class. */
+    struct RBasic basic;
+
+    /** IO's specific fields. */
+    struct rb_io_t *fptr;
+};
+
+/**
+ * Convenient casting macro.
+ *
+ * @param   obj  An object, which is in fact an ::RFile.
+ * @return  The passed object casted to ::RFile.
+ */
+#define RFILE(obj) RBIMPL_CAST((struct RFile *)(obj))
+#endif /* RBIMPL_RFILE_H */