I find that these are currently (CVS head, newlib-1.17.0-rtems4.10-20090224.diff) defined/exported by both, RTEMS and newlib: __assert __assert_func closedir creat execl execle execlp execv execve execvp getcwd opendir readdir readdir_r rewinddir scandir seekdir sleep telldir times ttyname ttyname_r usleep -- Till