[OpenAFS-devel] Compiling openafs on arm64/aarch64 architecture

[Troy Benjegerdes]

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.
> 
> _______________________________________________
> OpenAFS-devel mailing list
> OpenAFS-devel@openafs.org
> https://lists.openafs.org/mailman/listinfo/openafs-devel

-- 
----------------------------------------------------------------------------
Troy Benjegerdes                 'da hozer'                  hozer@hozed.org
7 elements      earth::water::air::fire::mind::spirit::soul        grid.coop

      Never pick a fight with someone who buys ink by the barrel,
         nor try buy a hacker who makes money by the megahash