[maemo-developers] build failure

[From: Thomas Vander Stichele]

Hi Niels,

thanks for replying.


> Yes, it was running for a very long time. How long does it take to
> build it on your system for arm?
> 
> This seems to run for quite a whle now, is that expected?
> builder1 17811 99.9  0.0 158612  8700 ?        R    Apr11 951:58
> /scratchbox/devkits/qemu/bin/qemu-arm-sb --sbox-call
> /home/builder1/maemo-fremantle-armel-extras-devel/work/erlang-13.b.2.1-dfsg/bin/arm-unknown-linux-gnueabi/beam.smp
> /home/builder1/maemo-fremantle-armel-extras-devel/work/erlang-13.b.2.1-dfsg/bin/arm-unknown-linux-gnueabi/beam.smp
> -- -root /home/builder1/maemo-fremantle-armel-extras-devel/work/erlang-13.b.2.1-dfsg/bootstrap
> -progname erl -- -home
> /home/builder1/maemo-fremantle-armel-extras-devel/work/erlang-13.b.2.1-dfsg/debian
> -noshell -noinput -mode minimal -boot start_clean -s erl_compile
> compile_cmdline @cwd
> /home/builder1/maemo-fremantle-armel-extras-devel/work/erlang-13.b.2.1-dfsg/lib/parsetools/src
> @warn 1 @option debug_info @option warn_obsolete_guard @i
> /home/builder1/maemo-fremantle-armel-extras-devel/work/erlang-13.b.2.1-dfsg/lib/stdlib/include
> @outdir ../ebin @files leex.erl
> 
> qemu-arm-sb is using 100% of one core continuously.

IIRC I've never been able to build it using qarm-emu.  I recall there
was a missing syscall.  I retried today and sure enough I got stuck with
100% cpu of qemu-arm-sb running erlc.

It was never reproducable, in the sense that it was usually on a
different file.

I attached gdb today and saw:
[thomas at otto dev]$ gdb -p 16086
GNU gdb (GDB) Fedora (7.2-46.fc14)
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show
copying"
and "show warranty" for details.
This GDB was configured as "i686-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Attaching to process 16086
Reading symbols
from /opt/scratchbox/users/thomas/scratchbox/devkits/qemu/bin/qemu-arm-sb...(no debugging symbols found)...done.
0x60089a31 in ?? ()
(gdb) bt
#0  0x60089a31 in ?? ()
#1  0x60000adb in ?? ()
#2  0x60001453 in ?? ()
#3  0x60090ea0 in ?? ()
#4  0x60000151 in ?? ()


I don't know how last time I figured out it was a missing syscall or why
I have no symbols.  What should I do to get symbols ?

I remember that I finished creating debs by copying the erlang compiler
and build directory to my phone in a chroot, then running erlc there,
and copying back the compiled erlang code (as the erlang .beam code is
machine-independent).  But it was a four day nightmare :)


> > c) what is the best course of action ?
> >
> > - package erlang and couchdb manually and ask for an exception to ship
> > them
> > - figure out what the bug might be
> 
> That would be the thing to do here.

Ok, I'll see what I can do about fixing the actual qemu-arm-sb bug.
Anything I can read up on to get useful backtraces ?

> - for which I will no doubt need help
> > of the debmaster (which I think is Jeremy in CC, correct me if I'm
> > wrong)
> 
> You are wrong ;) Jeremiah is not working for maemo.org anymore.

Ok, I think it would be good to update the wiki page.

Also, is there some way to see what is currently building ? It looks
like the maemo build system can only report after a build failed or
succeeded, I'm never quite sure if it's even trying to build what I'm
submitting.

Thanks
Thomas

-- 

-- 
"Two million women and only one Flasheart..."
--
MOAP - Maintaining your projects since 2006
https://apestaart.org/moap/trac/