After updating to svn r37660 I cannot compile an empty program for AVR target: test.pp: program test; begin end. Compile with ../compiler/ppcrossavr -Cpavr5 -Pavr -Wpatmega328p test.pp test.pp(1,20) Fatal: Cannot find system type "variant". Check if you use the correct run time library. SVN r37659 is working for AVR.