[arch-general] arduino mega2560 and gcc-avr

I'm trying to use my arduino mega2560 with arch but there's no way to get it working yet.. I installed the arduino 1.0.1-1, and everything seems to work, until I try to use the Serial, when I get (compiling from gnoduino): avr:5 architecture of input file `/tmp/build1342512569.47XizyI/core.a(HardwareSerial.cpp.o)' is incompatible with avr:6 output collect2: error: ld returned 1 exit status I saw about a bug in avr-gcc but it should have been fixed long time ago, and it's probably not the same thing... Anyone got it working?