Re: [Xen-devel] [Help] How to build mini-OS with libc support, like Newlib?

[Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>]

Lele Ma, le Tue 02 Sep 2014 17:36:36 +0800, a écrit :
> On Tue, Sep 2, 2014 at 3:47 PM, Samuel Thibault
> <samuel.thibault@xxxxxxxxxxxx> wrote:
> >
> > Lele MA, le Tue 02 Sep 2014 15:20:32 +0800, a écrit :
> > > If Newlib can be used to build mini-os, how to do it? Do I have to 
> > > compile a
> > > cross-compiler first?
> >
> > Yes. But this all already handled by the Makefile in stubdom/, and see
> > the end of README about the c-stubdom target which builds the c/
> > directory.
> >
> 
> Thank you so much! It is great to build newlib so conveniently. But
> when I run 'make  c-stubdom' in stubdom/, it yields:
> 
>      make: *** No rule to make target `mini-os-x86_64-c', needed by
> `c-stubdom'. Stop"
> 
> Do you have any idea about how this happen?

It's been years since I have had a look at that build system :)

Apparently the c target somehow gets disabled, but you can add it by
hand in 

TARGETS=$(STUBDOM_TARGETS) c

> BTW, after building xen, there is a new directory named
> "newlib-x86_64/' in stubdom/. I am a newbie to newlib and don't know
> what's this exactly. Is it the newlib that a stubdomain can use as the
> libc?

That's it, yes.

Samuel

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