Hello,
When one uses the -Bsymbolic_functions link option, the effect on
Bacula is that the default values will not in all cases be set
correctly. The exact mechanism is a bit complicated but I think it
applies mostly to the Director. The "workaround" for this problem
(requiring no rebuilding) is to explicitly set the needed default
values. In the case of bconsole, the Director's "Maximum Console
Connections" is by fault set to 20, but with the silly fiddling that the
linker does to the source code with that option on, it sets it to zero,
and you see the results (the error message could probably be improved).
So to make bconsole work in the Director's Director resource set:
Maximum Console Connections = 20
or what ever value you want (I recommend at least 5 in case you get
zombies).
Best regards,
Kern
On 10/02/2016 01:06 AM, Jan Martin wrote:
> Thanks to Kern, John, and Josh,
>
> It seems I am not crazy after all :). So the current release version
> from Mint 18 seems to be compiled with a link switch
> -Bsymbolic_functions, which makes it not work. The version lines for my
> bacula-dir and bconsole:
>
> trinity% sudo /usr/sbin/bacula-dir -?
> Copyright (C) 2000-2014 Free Software Foundation Europe e.V.
>
> Version: 7.0.5 (28 July 2014)
>
> trinity% bconsole -?
> Copyright (C) 2000-2014 Free Software Foundation Europe e.V.
>
> Version: 7.0.5 (28 July 2014) x86_64-pc-linux-gnu ubuntu 16.04
>
> suggest that they were compiled two years ago, perhaps before Kern
> became involved in the process? It also suggests that bconsole at
> least, was from the ubuntu distribution 16.04.
>
> I'm a little unclear about how software updates flow between Debian,
> Ubuntu, and Mint - is there a way to get the Mint 18 packager to
> recompile the package, or does he/she need to just get a later 16.04
> update which is correctly compiled? Is there something I can do to help?
>
> Overall, thanks very much guys!
>
> -Jan
>
>
> On 10/01/2016 08:47 AM, Kern Sibbald wrote:
>> I cannot say for sure about Debian, but for Ubuntu there are/were bug
>> reports open. All have been
>> resolved by the packagers with my input. What happened with Ubuntu is
>> that they simply
>> packaged it and released it without testing (surely due to lack of
>> time). This meant that Bacula
>> failed out of the box -- at least this is the case for their latest
>> release. I must say that in
>> general Ubuntu keeps up pretty well with the Bacula releases, and now
>> they know how to
>> run the Bacula regression tests, so it is likely that future releases
>> will be better.
>>
>> Best regards,
>> Kern
>>
>> On 10/01/2016 04:51 PM, Hankins, Jonathan wrote:
>>> It seems weird that the bacula package in Debian and Ubuntu, et al, is
>>> broken and no one has noticed (checked Debian bug database). I know
>>> Debian has been on 5.x in the stable release for years (still is).
>>> It's possible that 7.0.5 got packaged for their testing release and
>>> maybe Ubuntu xenial picked it up and thus Mint 18. My guess is most
>>> folks using bacula on a Debian distro are on Debian stable, and not
>>> Ubuntu or mint (workstation oriented releases...if anything, may be
>>> using bacula-fd) and thus no one has noticed. I'll do a little digging
>>> and talk to the person who packages bacula for Debian and see if I
>>> figure it out.
>>>
>>> Thanks for the insight about the known compiler issues!
>>>
>>> -Jonathan Hankins
>>>
>>>
>>> On Sat, Oct 1, 2016, 7:57 AM Kern Sibbald <kern AT sibbald DOT com
>>> <mailto:kern AT sibbald DOT com>> wrote:
>>>
>>> Hello Josh,
>>>
>>> Yes, if you build either with -D fortify-source=2 or link with
>>> -Bsymbolic-functions, Bacula will fail. It is best
>>> to stick with the Bacula recommended build options, which is what
>>> you are using.
>>>
>>> Also if you have a Bacula version less that 7.4.3 and you build
>>> with GNU C++ 6.0 or greater,
>>> Bacula will not work. This problem is fixed in 7.4.3 and greater,
>>> but the guys committing to
>>> C++ have lost all common sense of the basic function of the C++
>>> compiler that is to correctly
>>> compile the source code written by the author. On multiple
>>> occasions, they now simply elide (drop
>>> or delete) your source code. Consequently, it is likely that with
>>> new C++ compiler we will
>>> run into additional problems, unless we can find a C++ compiler
>>> that respects what the programmer
>>> writes. It is the user's responsibility (or problem) if he/she
>>> adds options that the project
>>> does not use (and often warns against), but when you have rogue
>>> C++ compiler writers, life
>>> gets much more complicated.
>>>
>>> Best regards,
>>> Kern
>>>
>>> On 10/01/2016 02:11 PM, Josh Fisher wrote:
>>>> On 10/1/2016 2:44 AM, Hankins, Jonathan wrote:
>>>>> So I've narrowed it down. If I build from Debian's patched
>>>>> source, but run ./configure myself, my flags in config.out look
>>>>> like:
>>>>>
>>>>> Compiler flags: -g -O2 -Wall -fno-strict-aliasing
>>>>> -fno-exceptions -fno-rtti
>>>>> Linker flags:
>>>>>
>>>>> However, if I build using debian's rules file, my flags in
>>>>> config.out look like:
>>>>>
>>>>> Compiler flags: -g -O2 -fstack-protector-strong
>>>>> -Wformat -Werror=format-security -fno-strict-aliasing
>>>>> -fno-exceptions -fno-rtti -fno-strict-aliasing -fno-exceptions
>>>>> -fno-rtti
>>>>> Linker flags: -Wl,-Bsymbolic-functions -Wl,-z,relro
>>>>>
>>>> Years ago I ran into a situation with building Bacula RPMS when
>>>> RedHat started adding -D fortify-source to CFLAGS by default.
>>>> This would cause 'buffer overflow detected' errors even though
>>>> what Bacula was doing in the code was perfectly safe. It just
>>>> didn't match what GCC's detection code expected. The answer was
>>>> to override RedHat's RPM macro additions with user-defined macros
>>>> and build using the CLFAGS that Bacula's configure creates. I'm
>>>> not so familiar with Debian packaging, but I'm sure there must be
>>>> a way to override the default rules so that Bacula can be built
>>>> with a proper CFLAGS.
>>>>
>>>>
>>>>
>>>>
>>>>
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