ATtiny2313 with arduino-tiny core libs 0100-0015: compile errors

Using Arduino Microcontrollers
5

Thanks a bunch for your quick help. Sure I will and I did as you wanted but without success:

/usr/share/arduino/hardware/tiny/cores/tiny/HardwareSerial.cpp:94:15: error: attempt to use poisoned "SIG_USART0_RECV"

In HardwareSerial.cpp line 94 reads this:

#elif defined(SIG_USART0_RECV) && defined(UDR0)