fiasco-ux does not build

[Stefan Scheler]

Hello,

> Does it help if you replace occurrences of
> 
> 	#include <cerrno>
> 
> in kernel/fiasco/src/kern/ux with
> 
> 	extern __thread int errno;

Yes, that helps indeed but reveals the same problem with irq0.

So I made the above change in kernel/fiasco/src/lib/amm/errno.h which
seems to fix this issue for all files. Thanks for the pointer.

> If so, your header files in /usr/include don't match your libc.a

Hmm?! That sounds weird. I'm using of course the headers shipped with my
glibc.

Stefan