Re: Boost_VERSION widely different between old CMake and new CMake find_package

From: Dimitri John Ledkov (xnox_at_[hidden])
Date: 2020-02-05 13:10:39

On Wed, 5 Feb 2020 at 13:07, Alexander Grund via Boost
<boost_at_[hidden]> wrote:
>
>
> Am 05.02.20 um 13:47 schrieb Dimitri John Ledkov via Boost:
> > As in Boost_VERSION is set to 1.71.0
> >
> > Now, lot of projects have Boost version comparison already and 1.71.0
> > is less than 106501. This creates problems for example when trying to
> > detect and use new-style pythonXY components, filesystem v3 api, etc.
> >
> > For example I found in Ubuntu packages stanzas like:
> > if (${Boost_VERSION} LESS 104400)
> >
> > Can we please fix Boost_VERSION in the new-style cmake to be
> > compatible / same / similar / higher than the old Boost_VERSION
> > string?
> I'd say: No.
>
> Even CMake is now reporting the version in the "correct" x.y.z format
> starting from CMake 3.15:
> https://cmake.org/cmake/help/v3.15/policy/CMP0093.html
> It was a mistake on their side to ever report it otherwise.
>
> There are already 3 Boost releases with BoostConfigs out there that
> report the version "correctly" so changing this now will lead to
> failures in other peoples projects.
> So I'd rather have people fix their CMLs instead. They can also check
> for and use Boost_VERSION_MACRO if they want.|

Ok that's cool. I'll contribute patches to the affected projects to
adjust for the correct world order.

-- 
Regards,
Dimitri.