[avr-libc-dev] Conditionally compile for tiny10 family

[Weddington, Eric]

Hi All,

I'm working on a bunch of changes that will add conditional compilation to not 
compile various functions if it is compiling for a device in the attiny10 
family (tiny10/4/5/9/20/40). The tiny10 family is weird in that it only has 
half of the register file of a regular avr, and a reduced instruction set. This 
means that quite a number of functions in avr-libc will not currently build for 
the tiny10 family. At this point I just want to conditionally compile these 
functions out, and then at a later point we'll look into fixing the various 
functions to actually make them work for the tiny10 family.

I think that it is best to get this work done (conditionally compile out) 
*before* a 1.7.1 release. Currently, 1.7.0 and trunk needs to be built with 
"make -k" (ignore build errors). I would like the future 1.7.1 to be able to be 
built normally, hence the motivation for this work.

Eric Weddington