_GL_CXXALIASWARN (closedir);
#if @GNULIB_DIRFD@
-# if !@HAVE_DECL_DIRFD@ && !defined dirfd
/* Return the file descriptor associated with the given directory stream,
or -1 if none exists. */
-_GL_EXTERN_C int dirfd (DIR *dir) _GL_ARG_NONNULL ((1));
+# if @REPLACE_DIRFD@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef dirfd
+# define dirfd rpl_dirfd
+# endif
+_GL_FUNCDECL_RPL (dirfd, int, (DIR *) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (dirfd, int, (DIR *));
+# else
+# if !(@HAVE_DECL_DIRFD@ || defined dirfd)
+_GL_FUNCDECL_SYS (dirfd, int, (DIR *) _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (dirfd, int, (DIR *));
# endif
+_GL_CXXALIASWARN (dirfd);
#elif defined GNULIB_POSIXCHECK
# undef dirfd
# if HAVE_RAW_DECL_DIRFD
_GL_FUNCDECL_RPL (fdopendir, DIR *, (int fd));
_GL_CXXALIAS_RPL (fdopendir, DIR *, (int fd));
# else
-# if !@HAVE_FDOPENDIR@
+# if !@HAVE_FDOPENDIR@ || !@HAVE_DECL_FDOPENDIR@
_GL_FUNCDECL_SYS (fdopendir, DIR *, (int fd));
# endif
_GL_CXXALIAS_SYS (fdopendir, DIR *, (int fd));