avr/sfr_defs.h (avr-gcc 3.4.1):

/* Backwards compatibility, do not use in new programs. */

/** \name Deprecated Macros */
/*@{*/


/** \def cbi
\ingroup avr_sfr
\deprecated
\code #include <avr/io.h>\endcode
For backwards compatibility only. This macro will eventually be removed.

Clear bit \c bit in IO register \c sfr. */

#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))

Dein Problem ist also wohl eine zu neue gcc-Version bzw die Verwendung eines deprecated (veralteten) Macros.


Johann