[webkit-dev] WebKit build failed

Alex Christensen achristensen at apple.com
Mon Dec 12 09:30:16 PST 2016

> On Dec 12, 2016, at 4:30 AM, Konstantin Tokarev <annulen at yandex.ru> wrote:
> 12.12.2016, 12:25, "Plamen Dimitrov" <plamend at coherent-labs.com>:
>> Hi all, I am trying to build webkit wincairo 1) I've done 2, 3, 4, 5, 6, 7, 8, 9,10 and 13 from this list: https://webkit.org/webkit-on-windows/#installing-developer-tools 2) I've installed Ruby 2.0.0-p648 and DevKit-mingw64 from here: http://rubyinstaller.org/downloads/ 3) I've run "update-webkit"; "update-webkit --wincairo"; "update-webkit-wincairo-libs" from VS2015 native tool command prompt. And when I've run "build-webkit --wincairo --release" the build has failed with "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\type_traits(1469): error C2672: 'std::invoke': no matching overloaded function found" and "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\type_traits(1469): error C2893: Failed to specialize function template 'unknown-type std::invoke(_Callable &&,_Types &&...)'" Have you ever seen it before? Thank you in advance, Plamen.
I’ve never seen that build error before.  It’s possible there’s something wrong with your build configuration.  I would need more context than just this error message.  What file was being compiled when this error message was generated?  Exactly what version of Visual Studio are you using?  Does your computer have other compilers installed that it might be using accidentally?  It is possible that the build was broken at the revision you tried, but I don’t think that is likely in this case.
>> ,
> Hi,
> Unfortunately, it's quite possible that WinCairo does not build on some arbitrary trunk revision. If you watch waterfall [1], you can often see WinCairo bot failing to compile, and right now it's apparently having more serious troubles and was put offline, so nobody working on other ports can check if they introduce new build breaks for WinCairo.
I take the bot down occasionally and use it to verify fixes.  There were no serious troubles over the weekend, I just forgot to start it up again.  It should be working fine now.
> The best option for you to proceed is to fix compilation error your self and submit patches to bugzilla following usual procedure.
> [1] https://build.webkit.org/waterfall
> -- 
> Regards,
> Konstantin
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