[Mono-dev] Mono Posix helper exception

[techi eth]

Hi,

I have found one exception when running test to access serial port on Linux
.Can anyone suggest what is missing.I have copied test O/P below.

Note : I am having libMonoPosixHelper.so under library path.
--------------------------------------------------
#mono --config config serial.exe
Enter port name
/dev/ttyS0
libMonoPosixHelper.so
press 's' for start
s
process failed


Unhandled Exception:
System.DllNotFoundException: libMonoPosixHelper.so
  at (wrapper managed-to-native)
System.IO.Ports.SerialPortStream:close_serial (int)
  at System.IO.Ports.SerialPortStream.Dispose (Boolean disposing) [0x00000]
in <filename unknown>:0
  at System.IO.Ports.SerialPortStream.Finalize () [0x00000] in <filename
unknown>:0
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