I just remade the package here , same sources & patches
But hope i have made the package "static" , ie. includung GMP & MPFR. ... etc..
By doing so i hope it can be used for both 32 & 64 bit machines. As there should be no dependencies of shared libs.
And the toolchain should be "self-contained".
Download the avr-gcc-4.3.3-avrfreaks-25-feb-2010-special-static.deb
For 64bit i would suppose you should force an install
with this command.
dpkg --force-architecture -i
Or just "Click" on it ....
Get the package here.
Please test & report back
If you want to save the already installed compiler , just do a :
sudo mv /usr/local/avr /usr/local/avr-backup
Install & test the .deb
If you want to restore the old compiler , uninstall (remove)the .deb package.
And just do a :
sudo mv /usr/local/avr-backup /usr/local/avr