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Date:      Sun, 19 May 2013 00:38:39 +1000
From:      Jason Birch <jbirch@jbirch.net>
To:        freebsd-arm <freebsd-arm@freebsd.org>
Subject:   Re: Port: U-Boot for BeagleBone
Message-ID:  <CAA=KUhspUwuNPW13bgZVy9CKwn6Ny_Njt0AXBH27XZPEuKgaWg@mail.gmail.com>
In-Reply-To: <D3F7C462-0BD5-4F20-AE32-448BB7B5855D@bsdimp.com>
References:  <3B16A2E5-C92B-4248-BE98-DD5C1194CB05@freebsd.org> <20130518100512.57c47fe6@bender> <B5DE3D0D-86BF-43F8-9FA2-A803B1FAABF8@freebsd.org> <D3F7C462-0BD5-4F20-AE32-448BB7B5855D@bsdimp.com>

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I'm not sure how it'd work internally in the ports tree (I'm a ports
consumer, not a contributor), but I'd find it weird if a U-Boot port
required me to get any devel/cross-* ports if U-Boot was able to be built
by Clang native to FreeBSD 9.X+ and I had Clang set as my CC, CPP, CXX.

I don't know the solution to this, given that it's probably not acceptable
to have a port configuration item that says "[X] Use Clang" - that sort of
compiler configuration is 'external' to the ports tree, if you get my
meaning. What I mean by that is it's generally a world configuration in
/etc/make.conf or set as an environmental variable before invoking make,
rather than explicit port configuration.

It might be enough to just have a note in the ports tree that it will
require devel/cross-<whatever> - I'm unaware of any other examples you
could use for precedent, but I'm sure they would exist.


On Sun, May 19, 2013 at 12:28 AM, Warner Losh <imp@bsdimp.com> wrote:

>
> On May 18, 2013, at 10:17 AM, Tim Kientzle wrote:
>
> >
> > On May 18, 2013, at 5:05 AM, Andrew Turner wrote:
> >
> >> On Fri, 17 May 2013 16:22:56 -0400
> >> Tim Kientzle <kientzle@freebsd.org> wrote:
> >>
> >>> I'm trying to move the actual building of boot loaders out of Crochet
> >>> and into FreeBSD ports.
> >>>
> >>> Here's the first attempt at such a port (many thanks to Diane Bruce
> >>> for patiently tutoring me through this):
> >>>
> >>> http://people.freebsd.org/~kientzle/u-boot-beaglebone.tgz
> >>>
> >>> I'd appreciate any feedback:
> >>> * Can you build this?
> >>> * Suggestions for improving it?
> >>
> >> Could you try installing devel/cross-binutils and devel/cross-gcc using
> >> TGTARCH=arm and TGTABI=none-eabi and using these to build u-boot? It
> >> would mean the user doesn't need to have xdev set up.
> >
> > I'll definitely give that a try.
> >
> > More importantly than the user, I'm concerned about the
> > package-building cluster.  One of the goals here is to
> > get the packages built automatically so that not everybody
> > has to build the boot loaders themselves.
> >
> > I've not used the devel/cross-ZZZ tools before, so
> > it will take me a little while to experiment.  Ideally,
> > the U-Boot port would just require the cross tools.
>
> A long time ago I was able to build u-boot using the cross-* ports... They
> even have wrapper ports so you can get the write dependencies. Make sure
> these are build-time dependencies not run-time dependencies and all that
> will be installed will be the u-boot images...
>
> Warner
>
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