[Development] QtWebKit is coming back (part 2)

[Konstantin Tokarev]

23.07.2017, 23:49, "Martin Koller" <kollix at aon.at>:
> On Mittwoch, 3. Mai 2017 17:03:50 CEST Konstantin Tokarev wrote:
>
>>  I'm not sure it would be acceptable, because updated QtWebKit requires full
>>  C++11 support in the compiler (gcc >= 4.9, 4.8 possible with disabling some
>>  features, or with code changes, which were not done yet).
>
> I'm trying to compile QtWebKit (5.212) on my openSuse 42.2, using the installed
> gcc compiler (4.8.5) and I get:
>
> The WebKit build was disabled for the following reasons:
>     * Using gcc version 4.8, but at least gcc version 4.9 is required to build QtWebKit.
>
> So which features can I disable and how ?
>
> Note that gcc 4.8.5 is the std. compiler on the latest official version of openSuse and still
> I can not compile ... :-(

You can compile with GCC 4.8 if IndexedDB and FTL JIT are disabled. However this brings a
degradation of user experience, especially in case of IndexedDB which was supported
in previous versions. Therefore you have 3 options:

1) Disable these features and build limited version using GCC 4.8;

2) Provide patches that fix compilation with GCC 4.8 and these features enabled (it's broken now because GCC 4.8 fails to compile legal C++11 construction, namely expansion of vararg template parameter pack inside lambda expression;

3) Use a different compiler to build QtWebKit package which still can be binary compatible with the rest of the system. GCC >= 4.9 or Clang is fine

>
> I will have the same issue when I want to compile it for SLES-12-SP2 or RHEL or CentOS-7
> all with gcc 4.8
>
> It would be really nice if the current release branch would compile at least on these major distros
>
> --
> Best regards/Schöne Grüße
>
> Martin
> A: Because it breaks the logical sequence of discussion
> Q: Why is top posting bad?
>
> () ascii ribbon campaign - against html e-mail
> /\ - against proprietary attachments
>
> Geschenkideen, Accessoires, Seifen, Kulinarisches: www.lillehus.at

-- 
Regards,
Konstantin