A dot zero isn't a dot zero without few problems, so I've released libmodbus v3.0.1 to fix problems with non-recent Linux kernels and other platforms.
libmodbus 3.0.1 (2011-07-18)
- Avoid useless serial_mode integer when TIOCSRS485 isn't supported
- Fix compilation failure on Windows (RS485 support) by Tobias Doerffel
- Properly check TIOCSRS485 define by Matthijs Kool
- Rename package to libmodbus5 to fix lintian warning