Re: Tool for generating a rootfs for foreign arch (aarch64 on x86_64, for example)?

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On Thu, 22 Jun 2017 09:33:25 -0400
Neal Gompa <ngompa13@xxxxxxxxx> wrote:

> On Thu, Jun 22, 2017 at 9:29 AM, John Reiser <jreiser@xxxxxxxxxxxx>
> wrote:
> > On 06/22/2017 0013Z, Neal Gompa wrote:
> >>
> >> Yes, we do have debootstrap, but it can only build Debian-based
> >> systems. :)
> >>
> >> I want to be able to build a Fedora based one.
> >
> >
> > Please be specific, and give a concrete example of what should
> > change.
> >
> > debootstrap takes a list of .debs and builds a root filesystem that
> > contains them.
> > febootstrap takes a list of .rpms and builds a root filesystem that
> > contains them.
> > In both cases the result contains some distro-specific metadata as
> > files: the packaging data for maintenance of the system, which is
> > implicit (are not files that are contained in some input .debs
> > or .rpms.) In the case of Debian, the "extra" info is the apt
> > metadata. In the case of Fedora, the "extra" info is the dnf/yum
> > metadata.
> >
> > Anything else?
> >
> 
> debootstrap has the capability to utilize qemu-user-static to support
> constructing foreign arch rootfses. That means I can build an arm64,
> armhf, or ppc64el rootfs from an x86_64 host. As far as I know,
> febootstrap can't do this.
> 
> The missing piece here is that I want to be able to construct a rootfs
> or an image for an architecture that *isn't* the same as my host
> machine.

which is a non-trivial issue as rpm can have scriptlets ...


		Dan
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