-# undef fstatat
-# define fstatat rpl_fstatat
-# endif
-# if !@HAVE_FSTATAT@ || @REPLACE_FSTATAT@
-extern int fstatat (int fd, char const *name, struct stat *st, int flags);
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef fstatat
+# define fstatat rpl_fstatat
+# endif
+_GL_FUNCDECL_RPL (fstatat, int,
+ (int fd, char const *name, struct stat *st, int flags)
+ _GL_ARG_NONNULL ((2, 3)));
+_GL_CXXALIAS_RPL (fstatat, int,
+ (int fd, char const *name, struct stat *st, int flags));
+# else
+# if !@HAVE_FSTATAT@
+_GL_FUNCDECL_SYS (fstatat, int,
+ (int fd, char const *name, struct stat *st, int flags)
+ _GL_ARG_NONNULL ((2, 3)));
+# endif
+_GL_CXXALIAS_SYS (fstatat, int,
+ (int fd, char const *name, struct stat *st, int flags));