[vtk-developers] BandedPolyDataContourFilter failes to compile on Ubuntu 14

Tue Feb 5 16:40:40 EST 2019

I saw the MR. My question is why are we supporting an old compiler. I think
that's what the argument against my first post in this thread.

On Tue, Feb 5, 2019, 1:34 PM Sankhesh Jhaveri <sankhesh.jhaveri at kitware.com
wrote:

> FWIW, I have a MR here:
> https://gitlab.kitware.com/vtk/vtk/merge_requests/5157
> 
>
> On Tue, Feb 5, 2019 at 4:32 PM Robert Maynard <robert.maynard at kitware.com>
> wrote:
>
>> I meant GCC 4.8.3/5 is a supported compiler by VTK not GCC itself.
>>
>> On Tue, Feb 5, 2019 at 4:29 PM Bill Lorensen <bill.lorensen at gmail.com>
>> wrote:
>> >
>> > Gcc 4.8 is no longer maintained. See
>> > https://www.gnu.org/software/gcc/gcc-4.8/
>> >
>> >
>> >
>> > On Tue, Feb 5, 2019, 1:27 PM Robert Maynard <robert.maynard at kitware.com
>> wrote:
>> >>
>> >> I wasn't paying attention to the thread. GCC 4.8.3 is a supported
>> >> compiler and until we remove it we have to accept that we need to
>> >> support it.
>> >>
>> >> On Tue, Feb 5, 2019 at 4:21 PM Bill Lorensen <bill.lorensen at gmail.com>
>> wrote:
>> >> >
>> >> > What happened to the arguments against my complaints about this
>> error?
>> >> >
>> >> > Bill
>> >> >
>> >> > On Tue, Feb 5, 2019, 9:23 AM Sankhesh Jhaveri <
>> sankhesh.jhaveri at kitware.com wrote:
>> >> >>
>> >> >> Sweet, thanks Rob,
>> >> >>
>> >> >>
>> >> >> On Tue, Feb 5, 2019 at 11:31 AM Robert Maynard <
>> robert.maynard at kitware.com> wrote:
>> >> >>>
>> >> >>> Here is a drop-in wrapper for rotate that has the C++11 behavior
>> but
>> >> >>> also works with GCC 4.8 ( https://godbolt.org/z/1aVjiZ ).
>> >> >>>
>> >> >>> On Tue, Feb 5, 2019 at 10:29 AM Bill Lorensen <
>> bill.lorensen at gmail.com> wrote:
>> >> >>> >
>> >> >>> > I don't have a fix. Best if you can look.
>> >> >>> >
>> >> >>> > I've built gcc 8.2 do I don't have a problem.
>> >> >>> >
>> >> >>> > Bill
>> >> >>> >
>> >> >>> > On Tue, Feb 5, 2019, 7:20 AM Sankhesh Jhaveri <
>> sankhesh.jhaveri at kitware.com wrote:
>> >> >>> >>
>> >> >>> >> Bill,
>> >> >>> >>
>> >> >>> >> It would be great if you have a fix, neverthless. A customer
>> noticed the same issue on Red Hat GCC v4.8.5 20150623. The README says VTK
>> requires gcc  v4.8.3 or newer.
>> >> >>> >>
>> >> >>> >> Let me know if you would rather I look into a fix for it.
>> >> >>> >>
>> >> >>> >> Thanks,
>> >> >>> >> Sankhesh
>> >> >>> >>
>> >> >>> >>
>> >> >>> >> On Tue, Feb 5, 2019 at 1:27 AM Bill Lorensen <
>> bill.lorensen at gmail.com> wrote:
>> >> >>> >>>
>> >> >>> >>> Sean,
>> >> >>> >>>
>> >> >>> >>> Thanks for the suggestion. I was able to build gcc 8.2 on my
>> Ubuntu
>> >> >>> >>> 14.04 system. Only a little tricky. Took several hours to
>> compile.
>> >> >>> >>>
>> >> >>> >>> I have successfully built VTK HEAD and the VTKExamples. All
>> VTK tests passed.
>> >> >>> >>>
>> >> >>> >>> No more bitching from me (about this topic anyway0>
>> >> >>> >>>
>> >> >>> >>> The compiler did expose some new warnings which I'll fix.
>> >> >>> >>>
>> >> >>> >>> Bill
>> >> >>> >>>
>> >> >>> >>> On Mon, Feb 4, 2019 at 8:38 AM Sean McBride <
>> sean at rogue-research.com> wrote:
>> >> >>> >>> >
>> >> >>> >>> > On Thu, 31 Jan 2019 20:37:32 -0500, David Thompson via
>> vtk-developers said:
>> >> >>> >>> >
>> >> >>> >>> > >I'm not sure it is a good idea to support old compilers and
>> distributions:
>> >> >>> >>> > >
>> >> >>> >>> > >1. Ubuntu 14.04 LTS will lose support from Canonical in 3
>> months. I
>> >> >>> >>> > >would be surprised if what is in git master is released by
>> then. Why
>> >> >>> >>> > >should we support platforms no longer supported by their
>> distributor?
>> >> >>> >>> >
>> >> >>> >>> > Is the compiler so tied to the OS?  Bill, can't you upgrade
>> your compiler without updating your whole OS?
>> >> >>> >>> >
>> >> >>> >>> > >2. If we keep forcing workarounds, the next time something
>> breaks, then
>> >> >>> >>> > >*it* will be the only compiler error. That pattern just
>> keeps accruing
>> >> >>> >>> > >technical debt. Ultimately, I believe that technical debt
>> will push
>> >> >>> >>> > >developers away from VTK so I want to avoid it.
>> >> >>> >>> > >
>> >> >>> >>> > >3. Not too long ago, it was common practice for systems in
>> production
>> >> >>> >>> > >use to never get patched (lest the patch break what was
>> working).
>> >> >>> >>> >
>> >> >>> >>> > Not that we (programmers collectively) have solved the
>> problem of patches always breaking things that work.  It's still the norm.
>> :(
>> >> >>> >>> >
>> >> >>> >>> > >However, security issues and increased connectivity
>> prevalent today has
>> >> >>> >>> > >pretty much put a stop to this practice and I think that
>> translates into
>> >> >>> >>> > >a much weaker argument for supporting older systems.
>> >> >>> >>> >
>> >> >>> >>> > I largely agree, but there are exceptions.
>> >> >>> >>> >
>> >> >>> >>> > Perhaps less on linux, but newer versions of macOS often
>> drop support for older hardware.  So it's not always easy or cheap to just
>> keep all software up-to-date.
>> >> >>> >>> >
>> >> >>> >>> > Cheers,
>> >> >>> >>> >
>> >> >>> >>> > --
>> >> >>> >>> > Sean
>> >> >>> >>> >
>> >> >>> >>> >
>> >> >>> >>>
>> >> >>> >>>
>> >> >>> >>> --
>> >> >>> >>> Unpaid intern in BillsParadise at noware dot com
>> >> >>> >>> _______________________________________________
>> >> >>> >>> Powered by www.kitware.com
>> >> >>> >>>
>> >> >>> >>> Visit other Kitware open-source projects at
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>> >> >>> >>> Search the list archives at:
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>> >> >>> >>> Follow this link to subscribe/unsubscribe:
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>> >> >>> >>>
>> >> >>> >> --
>> >> >>> >>
>> >> >>> >> Sankhesh Jhaveri
>> >> >>> >>
>> >> >>> >> Sr. Research & Development Engineer | Kitware | (518) 881-4417
>> >> >>> >
>> >> >>> > _______________________________________________
>> >> >>> > Powered by www.kitware.com
>> >> >>> >
>> >> >>> > Visit other Kitware open-source projects at
>> http://www.kitware.com/opensource/opensource.html
>> >> >>> >
>> >> >>> > Search the list archives at:
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>> >> >>> >
>> >> >>> > Follow this link to subscribe/unsubscribe:
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>> >> >>> >
>> >> >>
>> >> >> --
>> >> >>
>> >> >> Sankhesh Jhaveri
>> >> >>
>> >> >> Sr. Research & Development Engineer | Kitware | (518) 881-4417
>>
> --
> Sankhesh Jhaveri *Sr. Research & Development Engineer* | Kitware
> <http://www.kitware.com/> | (518) 881-4417
> 
>
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