[PATCH] Add TPF config support to libstdc++

[Benjamin Kosnik]

>Hmm, the default case is
>  *)
>    os_include_dir="os/generic"
>    ;;
>so I should think this *is* needed.

I think you are right. It's the cpu info, not the os info. See:

# Try to guess a default cpu_include_dir based on the name of the CPU.  We
# cannot do this for os_include_dir; there are too many portable operating
# systems out there.  :-)

-benjamin