libc {

  GLIBC_2.0 {

    # c*

    cfgetispeed; cfgetospeed; cfmakeraw; cfsetispeed; cfsetospeed; cfsetspeed;

    # t*

    tcdrain; tcflow; tcflush; tcgetattr; tcgetpgrp; tcsendbreak; tcsetattr;

    tcsetpgrp;

  }

  GLIBC_2.1 {

    # t*

    tcgetsid;

  }

}