Bug#950859: cegui-mk2: FTBFS with boost171 and new cmake and symbol changes

[Olek Wojnar]

Hi Dimitri,

Thanks for the bug report, and thanks for the patch!

On 2/7/20 8:49 AM, Dimitri John Ledkov wrote:
> Package: cegui-mk2
> Version: 0.8.7-5
> Severity: serious
> Tags: patch
> Justification: ftbfs
>
> Dear Maintainer,
>
> cegui-mk2 ftbfs with new cmake & boost1.71 due to change in cmake
> policy w.r.t. boost version detection (it is now more normal). See patch attached.

Thank goodness for them making it more normal! I was not a fan of that
old system.

> I am currently in process of migrating to boost1.71 in Ubuntu, which
> has not started yet in Debian but is upcoming.
>
> When built against boost1.71 symbols are dropped and changed. It seems
> as if cegui-mk2 re-exports boost symbols, and thus boost abi change in
> templates leakes in the change of cegui-mk2 libraries ABI change.
>
> How should this be handled?
>
> Is there a new upstream release of cegui that we can package in
> experimental, always built against boost1.71 with new symbols?

No, upstream has not done a new release in a while. Although I can (and
plan to) package the current version in experimental once boost1.71
lands there. Since I don't follow Boost, a notification in this bug
report would be appreciated.

> Or shall i just blindly update the symbols file, rebuild ember and
> hope for the best?
>
> How was this handled in cegui-mk2 before, when boost changed without
> cegui-mk2 new upstream releases?

I've only recently taken a more-active role in maintaining this package.
I think I previously only submitted a few NMUs. But, I believe that what
you listed is exactly what happened. I know I saw that with Ember (which
I *have* been maintaining for a while).

If you have any suggestions for a better, less-reactive, way forward on
this I'm certainly open to it!

> I would like to avoid diverging ABI between ubuntu & debian here.

Absolutely! I'm a big fan of keeping Debian and Ubuntu closely
synchronized.

-Olek


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