[oe] [PATCH 0/4][RFC] Remove CROSS_DIR, install cross-packages into native sysroot

[Chris Larson]

On Fri, Jul 23, 2010 at 10:20 AM, Khem Raj <raj.khem at gmail.com> wrote:

> On Fri, Jul 23, 2010 at 2:18 AM, Frans Meulenbroeks
> <fransmeulenbroeks at gmail.com> wrote:
> > 2010/7/23 Richard Purdie <rpurdie at rpsys.net>
> >
> >> On Fri, 2010-07-23 at 10:11 +0200, Koen Kooi wrote:
> >> > -----BEGIN PGP SIGNED MESSAGE-----
> >> > Hash: SHA1
> >> >
> >> > On 23-07-10 10:02, Phil Blundell wrote:
> >> > > On Fri, 2010-07-23 at 09:25 +0200, Koen Kooi wrote:
> >> > >> There is a BIG problem with these patches, they break multimachine
> >> builds.
> >> > >>
> >> > >> The previous situation had:
> >> > >>
> >> > >> cross/armv7a-angstrom-foo/usr/bin/
> >> > >> cross/armv5te-angstrom-foo/usr/bin/
> >> > >> etc
> >> > >>
> >> > >> The new situation has:
> >> > >>
> >> > >> x86_64-linux/usr/bin
> >> > >>
> >> > >> So all the toolchains get dropped into the *same* directory, which
> >> > >> breaks horribly.
> >> > >
> >> > > Which are the actual binaries that collide?  I would have thought
> that
> >> > > everything which gets installed into the cross bindir ought to be
> >> > > prefixed with TARGET_SYS (i.e. usr/bin/armv7a-angstrom-linux-gcc,
> etc).
> >> >
> >> > It's all 'arm-angstrom-foo', I was just about to make the suggestion
> to
> >> > change it to 'armv7a-angstrom-foo' :)
> >>
> >> I've just been talking to Koen about this. When building for armv7a,
> >> TARGET_ARCH which goes into TARGET_PREFIX and TARGET_SYS is "arm".
> >>
> >> I suspect if we change TARGET_ARCH to be armv7a, nasty things will
> >> happen but I could be wrong.
> >>
> >
> > I've been pondering if TARGET_ARCH should be the real arch (like armv7a)
> and
> > whether adjacent to that there should be a TARGET_ARCH_FAMILY or so.
> >
> > Changing TARGET_ARCH to armv7a without other changes definitely is going
> to
> > break things.
>
>
> maybe we should not change TARGET_ARCH but use FEED_ARCH to construct
> TARGET_SYS


Using a variable from packaging / rootfs creation as a field passed to
configure at build time strikes me as a terrible idea.
-- 
Christopher Larson
clarson at kergoth dot com
Founder - BitBake, OpenEmbedded, OpenZaurus
Maintainer - Tslib
Senior Software Engineer, Mentor Graphics