[SyncEvolution] Compatibility with Evolution 3.8

[Daniel CLEMENT]

Le lundi 10 février 2014 à 17:53 +0100, Patrick Ohly a écrit :
> On Mon, 2014-02-10 at 17:17 +0100, Daniel CLEMENT wrote:
> > Le lundi 10 février 2014 à 16:40 +0100, Patrick Ohly a écrit :
> > > On Mon, 2014-02-10 at 15:22 +0100, Daniel CLEMENT wrote:
> > > > Le dimanche 09 février 2014 à 20:05 +0100, Patrick Ohly a écrit :
> > > > > On Fri, 2014-02-07 at 22:23 +0100, Daniel CLEMENT wrote:
> > > > > > Perhaps there is a residue of an old config. which is still interfering?
> > > > > > On this (test) PC I could try and purge and reinstall everything.
> > > > > 
> > > > > Even if it fails there should be some indication how. Please type the
> > > > > commands below in a shell and send the resulting /tmp/syncevo.out text
> > > > > file.
> > > > > 
> > > > > script /tmp/syncevo.out
> > > > > syncevolution --daemon=no --version
> > > > > SYNCEVOLUTION_DEBUG=1 gdb --args /usr/libexec/syncevo-dbus-server --no-syslog --stdout --verbosity 3 -d unlimited
> > > > > run
> > > > > 
> > > > > Now it should still be running (no gdb command prompt). Run the sync-ui
> > > > > separately. If it crashes or quits, gdb will tell you. In that case,
> > > > > type
> > > > > 
> > > > > thread apply all bt
> > > > > 
> > > > I get this:
> > > > -----
> > > [...]
> > > 
> > > > ...but the 2nd command produces no further output. I tried to rerun
> > > > everything, but on the next runs the syncevo.out remains empty!?
> > > 
> > > Can you please follow the instructions step-by-step and then attach the
> > > entire /tmp/syncevo.out file? I can't believe that gdb quits without
> > > printing anything. Therefore I want to see exactly what you doing.
> > > Otherwise I can't help.
> > > 
> > > Copy-paste each line, press return after each line. The first command
> > > starts a script session, the third commands starts gdb (must be
> > > installed), then "run" inside gdb starts syncevo-dbus-server.
> > > 
> > My apology for not understanding that "run" was separated (thought it
> > was an automated linebreak).
> > 
> > But I assure you that syncevo.out remains empty hereafter,
> 
> Perhaps one has to quit the sub-shell after leaving gdb. I expected
> "script" to copy everything into the file without buffering, but you are
> right, that needs to be enabled with "script --flush /tmp/syncevo.out"
> explicitly.
> 
> >  so I'm trying
> > to attach instead the whole contents of the shell screen. That's really
> > all I see, I hope it's useful. To me it looks as if the
> > syncevo-dbus-server tries to start but exits immediately.
> 
> Yes, and there *is* an error message:
> 
> /usr/libexec/syncevo-dbus-server: symbol lookup error: /usr/libexec/syncevo-dbus-server: undefined symbol: _Z21intrusive_ptr_add_refP14DBusConnection
> 
> That symbol should be provided by a library that syncevo-dbus-server is
> linked against:
> 
> $ objdump -T /usr/lib/libgdbussyncevo.so.0 | grep _Z21intrusive_ptr_add_refP14DBusConnection
> 000000000000a640 g    DF .text	0000000000000005  Base        _Z21intrusive_ptr_add_refP14DBusConnection
> $ objdump -T /usr/libexec/syncevo-dbus-server | grep _Z21intrusive_ptr_add_refP14DBusConnection
> 0000000000000000      DF *UND*	0000000000000000              _Z21intrusive_ptr_add_refP14DBusConnection
> $ objdump -T /usr/lib/libgdbussyncevo.so.0 | grep _Z21intrusive_ptr_add_refP14DBusConnection
> 000000000000a640 g    DF .text	0000000000000005  Base        _Z21intrusive_ptr_add_refP14DBusConnection
> $ readelf -a /usr/libexec/syncevo-dbus-server | grep NEED
>   [ 9] .gnu.version_r    VERNEED          0000000000477198  00077198
>  0x0000000000000001 (NEEDED)             Shared library: [libgdbussyncevo.so.0]
> ...
> $ ldd /usr/libexec/syncevo-dbus-server | grep libgdbussyncevo.so.0
> 	libgdbussyncevo.so.0 => /usr/lib/libgdbussyncevo.so.0 (0x00007f02d5764000)
> 
> Do you get similar output on your system for these commands?

Quite similar:

daniel at e6330v ~ $ ldd /usr/libexec/syncevo-dbus-server | grep
libgdbussyncevo.so.0
	libgdbussyncevo.so.0 => /usr/local/lib/libgdbussyncevo.so.0
(0x00007f7848888000)
> 
> To debug this, run
> LD_DEBUG=all /usr/libexec/syncevo-dbus-server 2>/tmp/ld.log
> and attach the resulting ld.log.

I can't, it's 38+ Mb! 38 Mb of error messages !?
> 
> When I run that, _Z21intrusive_ptr_add_refP14DBusConnection is not
> needed, which is a bit unexpected.
> 
> Therefore there is one more test that you could run:
>       * Start syncevo-dbus-server und gdb, as before.
>       * Before "run", enter "b
>         _Z21intrusive_ptr_add_refP14DBusConnection".
>       * Then run.
>       * When it stops, "where".
> 
> I am not sure whether it'll work. On Debian Wheezy, gdb segfaults.
> 
Yes I get a segfault at the 2nd step, so I even don't get a chance to
type "run". (The Linux Mint running on this PC is about Debian testing.)
-- 
Daniel CLEMENT
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