[PATCH] Fixes for i686-pc-linux-newlib

[Paolo Bonzini]

> Which headers in particular?

All those that are needed by the unwinder, because now that is built as 
well.  newlib still needs glibc headers that it does not provide, right?

> No, you should not be treating the configuration as a cross build.

Note that the configuration is treated as a cross build only as far as 
allowing --with-headers.

On one hand your point is right that libgcov should find the headers if 
--with-newlib is given; on the other hand, it seems like gcc disables 
this on purpose, by defining -Dinhibit_libc if it finds --with-newlib.

> The libc/sys/linux code is already LGPL so if you contribute an LGPL 
> solution, that is ok so long as everything works for a basic program. 
> Scripts for building x86-linux executables today won't be linking in 
> crti.o or crtn.o so you might look at making references weak so that 
> crti/crtn are not always required.

Yes, thanks.

Paolo