Date: Thu, 12 Feb 2015 11:05:22 -0500 From: Ed Maste <emaste@freebsd.org> To: Warner Losh <imp@bsdimp.com> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: Re: FreeBSD/arm64 MACHINE/MACHINE_ARCH identification Message-ID: <CAPyFy2ATn5xgsvePCdvzqnyBS45izVHdL8yLaQQoKeJenSv9tg@mail.gmail.com> In-Reply-To: <71E9C1B9-F819-420B-90A5-A36D58E71817@bsdimp.com> References: <CAPyFy2A=Ev5gdYPKgEE0LS3-1sY%2BXmkZA7VCe71E6Fmbb=vMRw@mail.gmail.com> <607BF592-A09B-4DB4-9872-C9E63066AB57@bsdimp.com> <CAPyFy2Bgrap3TkFNuChyMC0Vwbjdt5FVW0ey03XtkK1iwNL1KQ@mail.gmail.com> <71E9C1B9-F819-420B-90A5-A36D58E71817@bsdimp.com>
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On 12 February 2015 at 01:54, Warner Losh <imp@bsdimp.com> wrote:
>
> They moved the sources in the kernel from aarch64 to arm64. I=E2=80=99m s=
ure.
Oh - I don't care what directory Linux puts the kernel source in, only
what's reported by uname. As far as I can tell that has always been
aarch64 for uname -m.
> config.guess uses uname -p:
>
> *:FreeBSD:*:*)
> UNAME_PROCESSOR=3D`/usr/bin/uname -p`
> echo ${UNAME_PROCESSOR}-unknown-freebsd`echo ${UNAME_RELEASE}|sed=
-e 's/[-(].*//'`
> exit ;;
Ah, yes - it looks like this has changed repeatedly over time, and I
must have looked at a rather outdated config.guess. It's clear from
this snippet though that this is a special case for FreeBSD, and most
other cases rely on uname -m. I also found a few other configure-like
scripts that only use uname -m.
> so uname -p must be =E2=80=98aarch64=E2=80=99 since that=E2=80=99s what i=
s expected.
Yes, I agree this is necessary.
> uname -m must
> be arm64 unless we move our kernel implementation to sys/aarch64 from the
> sys/arm64 it is now.
We might decide that "uname -m" has to be aarch64 to match
expectations of third-party software set by other operating systems.
If that in turn means we have to move the kernel source, so be it.
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