+#if @GNULIB_TTYNAME_R@
+/* Store at most BUFLEN characters of the pathname of the terminal FD is
+ open on in BUF. Return 0 on success, otherwise an error number. */
+# if @REPLACE_TTYNAME_R@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef ttyname_r
+# define ttyname_r rpl_ttyname_r
+# endif
+_GL_FUNCDECL_RPL (ttyname_r, int,
+ (int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (ttyname_r, int,
+ (int fd, char *buf, size_t buflen));
+# else
+# if !@HAVE_TTYNAME_R@
+_GL_FUNCDECL_SYS (ttyname_r, int,
+ (int fd, char *buf, size_t buflen) _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (ttyname_r, int,
+ (int fd, char *buf, size_t buflen));
+# endif
+_GL_CXXALIASWARN (ttyname_r);
+#elif defined GNULIB_POSIXCHECK
+# undef ttyname_r
+# if HAVE_RAW_DECL_TTYNAME_R
+_GL_WARN_ON_USE (ttyname_r, "ttyname_r is not portable - "
+ "use gnulib module ttyname_r for portability");
+# endif
+#endif
+
+
+#if @GNULIB_UNLINK@
+# if @REPLACE_UNLINK@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef unlink
+# define unlink rpl_unlink
+# endif
+_GL_FUNCDECL_RPL (unlink, int, (char const *file) _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (unlink, int, (char const *file));
+# else
+_GL_CXXALIAS_SYS (unlink, int, (char const *file));
+# endif
+_GL_CXXALIASWARN (unlink);
+#elif defined GNULIB_POSIXCHECK
+# undef unlink
+# if HAVE_RAW_DECL_UNLINK
+_GL_WARN_ON_USE (unlink, "unlink is not portable - "
+ "use gnulib module unlink for portability");
+# endif
+#endif
+
+
+#if @GNULIB_UNLINKAT@
+# if @REPLACE_UNLINKAT@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef unlinkat
+# define unlinkat rpl_unlinkat
+# endif
+_GL_FUNCDECL_RPL (unlinkat, int, (int fd, char const *file, int flag)
+ _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (unlinkat, int, (int fd, char const *file, int flag));
+# else
+# if !@HAVE_UNLINKAT@
+_GL_FUNCDECL_SYS (unlinkat, int, (int fd, char const *file, int flag)
+ _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (unlinkat, int, (int fd, char const *file, int flag));
+# endif
+_GL_CXXALIASWARN (unlinkat);
+#elif defined GNULIB_POSIXCHECK
+# undef unlinkat
+# if HAVE_RAW_DECL_UNLINKAT
+_GL_WARN_ON_USE (unlinkat, "unlinkat is not portable - "
+ "use gnulib module openat for portability");
+# endif
+#endif
+
+
+#if @GNULIB_USLEEP@
+/* Pause the execution of the current thread for N microseconds.
+ Returns 0 on completion, or -1 on range error.
+ See the POSIX:2001 specification
+ <http://www.opengroup.org/susv3xsh/sleep.html>. */
+# if @REPLACE_USLEEP@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef usleep
+# define usleep rpl_usleep
+# endif
+_GL_FUNCDECL_RPL (usleep, int, (useconds_t n));
+_GL_CXXALIAS_RPL (usleep, int, (useconds_t n));
+# else
+# if !@HAVE_USLEEP@
+_GL_FUNCDECL_SYS (usleep, int, (useconds_t n));
+# endif
+_GL_CXXALIAS_SYS (usleep, int, (useconds_t n));
+# endif
+_GL_CXXALIASWARN (usleep);
+#elif defined GNULIB_POSIXCHECK
+# undef usleep
+# if HAVE_RAW_DECL_USLEEP
+_GL_WARN_ON_USE (usleep, "usleep is unportable - "
+ "use gnulib module usleep for portability");
+# endif
+#endif
+
+
+#if @GNULIB_WRITE@
+/* Write up to COUNT bytes starting at BUF to file descriptor FD.
+ See the POSIX:2001 specification
+ <http://www.opengroup.org/susv3xsh/write.html>. */
+# if @REPLACE_WRITE@ && @GNULIB_UNISTD_H_SIGPIPE@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef write
+# define write rpl_write
+# endif
+_GL_FUNCDECL_RPL (write, ssize_t, (int fd, const void *buf, size_t count)
+ _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (write, ssize_t, (int fd, const void *buf, size_t count));
+# else
+/* Need to cast, because on mingw, the third parameter is
+ unsigned int count
+ and the return type is 'int'. */
+_GL_CXXALIAS_SYS_CAST (write, ssize_t, (int fd, const void *buf, size_t count));
+# endif
+_GL_CXXALIASWARN (write);