FSF gcc-4.x for Atmel AVR cross-development

Included is the basic C++ compiler, although this is only of limited
use without a libstdc++, and it is little tested.

Supported debugging formats: -gdwarf-2 [default], -gstabs
Locally hack added: recognizes 0bXXX binary constants
Backported GCC 4.2 patch for __attribute__((alias))

Locally added support for the following AVR devices:

  ATtiny24/ATtiny44/ATtiny84
  ATtiny25/ATtiny45/ATtiny85      ATtiny261/ATtiny461/ATtiny861
  ATmega164P/ATmega324P/ATmega644/ATmega644P
  ATmega165P/ATmega169P
  ATmega329/ATmega3290/ATmega649/ATmega6490
  ATmega406
  ATmega640/ATmega1280/ATmega1281
  AT90PWM2/AT90PWM3               AT90CAN32/64
  AT90USB646/647/1286/1287
  ATmega2560/ATmega2561 (beta test)

WWW: http://gcc.gnu.org/
WWW: http://www.nongnu.org/avr-libc/