help with __sync for "long long" types

[Preeti Sharma <pritis@xxxxxxxxx>]

I am trying to use __sync_fetch_and_add with type  as "long long" .

This gives me the link error :
undefined reference to `__sync_fetch_and_add_8'

This compiles for a "int " type though. I am using the the gcc option
-march=i686

Is it possible to do a 64 bit integer operation atomically with the
__sync .. builtin functions ?

Thanks

Preeti.