You actually don't need aarch64 hardware for this (although having real
hardware would help with IO sluggishness and single CPU limitation). I'm
using the qemu-system-aarch64 emulator and booting a deboostrap install
of the Ubuntu 14.04 arm64 port on a qcow2 image.
I've thrown my rough notes up on how to setup a qemu arm64 Ubuntu VM here,
https://gist.github.com/ecliptik/81ad7484d522097dca7f
Micheal
On 09/02/14 13:21, Troy Benjegerdes wrote:
I suspect this would get fixed real fast if you can send some developers
some aarch64 hardware ;)
Or if there's a reasonably priced eval kit I would like trying out
a 64 bit arm...
On Tue, Sep 02, 2014 at 12:55:31PM -0700, Micheal Waltz wrote:
I have a Ubuntu 14.04 aarch64 VM and am trying to compile openafs on
it. I'm using the Ubuntu/Debian source packages (tried both 1.6.7
and 1.6.9), and after modifying the source to recognize aarch64 it
begins to compile but eventually fails with an error of,
gcc -I/home/mwaltz/debian/openafs-1.6.9/src/config
-I/home/mwaltz/debian/openafs-1.6.9/include -I. -I.
-D_LARGEFILE64_SOURCE -o rmtsysd rmtsysd.o libsys.a
/home/mwaltz/debian/openafs-1.6.9/lib/librx.a libsys.a
/home/mwaltz/debian/openafs-1.6.9/lib/liblwp.a
/home/mwaltz/debian/openafs-1.6.9/lib/util.a -lresolv
/home/mwaltz/debian/openafs-1.6.9/lib/liblwp.a(lwp.o): In function
`Abort_LWP':
/home/mwaltz/debian/openafs-1.6.9/src/lwp/./lwp.c:796: undefined
reference to `savecontext'
/home/mwaltz/debian/openafs-1.6.9/lib/liblwp.a(lwp.o): In function
`Dispatcher':
/home/mwaltz/debian/openafs-1.6.9/src/lwp/./lwp.c:982: undefined
reference to `returnto'
/home/mwaltz/debian/openafs-1.6.9/lib/liblwp.a(lwp.o): In function
`LWP_QWait':
/home/mwaltz/debian/openafs-1.6.9/src/lwp/./lwp.c:246: undefined
reference to `savecontext'
/home/mwaltz/debian/openafs-1.6.9/lib/liblwp.a(lwp.o): In function
`LWP_CreateProcess':
/home/mwaltz/debian/openafs-1.6.9/src/lwp/./lwp.c:302: undefined
reference to `savecontext'
/home/mwaltz/debian/openafs-1.6.9/src/lwp/./lwp.c:361: undefined
reference to `savecontext'
/home/mwaltz/debian/openafs-1.6.9/src/lwp/./lwp.c:372: undefined
reference to `savecontext'
/home/mwaltz/debian/openafs-1.6.9/src/lwp/./lwp.c:411: undefined
reference to `savecontext'
/home/mwaltz/debian/openafs-1.6.9/lib/liblwp.a(lwp.o):/home/mwaltz/debian/openafs-1.6.9/src/lwp/./lwp.c:420:
more undefined references to `savecontext' follow
collect2: error: ld returned 1 exit status
make[5]: *** [rmtsysd] Error 1
make[5]: Leaving directory `/home/mwaltz/debian/openafs-1.6.9/src/sys'
I did some research into this error, and found a thread on this list
from 2009 regarding the ppc architecture [1] and appears it's
related to the aarch64 glibc not having support for ucontext.
Looking at src/config/param.arm_linux26.h, it specifically says that
glibc doesn't implement getcontext/savecontext for arm. The ppc
thread mentioned lwp vs pthreads, and I'm wondering if for aarch64
there needs to be something updated to use pthreads instead of lwp.
I'm not really a developer and this is about the limit of my
understanding of the problem, so any help on how to work around this
error and getting openafs to compile on aarch64 (particularly via
the debian packages) would be appreciated.
I've also opened a bug with Ubuntu regarding this [2].
1. https://lists.openafs.org/pipermail/openafs-devel/2009-June/016791.html
2. https://bugs.launchpad.net/ubuntu/+source/openafs/+bug/1364544
Thank you,
--
Micheal Waltz
Unix Configuration Management (go/ucm)
Qualcomm Inc.
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--
Micheal Waltz
Unix Configuration Management (go/ucm)
Qualcomm Inc.
Phone: 858-845-6083
Cell: 858-882-7079
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