Re: [Buildroot] Build failure on qt5webkit

["Alexis Lothoré via buildroot" <buildroot@buildroot.org>]

Hi  Philipp,

On Wed Jul 16, 2025 at 8:19 AM CEST, Philipp Ludwig wrote:
> On 7/15/25 14:42, Alexis Lothoré via buildroot wrote:
>> I am facing a build issue with qt5webkit package on buildroot 2025.02.x.
>> The build outputs the following error:
>> 
>> /home/alexis/src/buildroot/output/host/opt/ext-toolchain/arm-buildroot-linux-gnueabihf/include/c++/14.2.0/type_traits:1237:52: error: non-constant condition for static assertion
>
>> I am not very fluent in C++, so I struggle to fix it. Based on the build
>> logs, I guess it relates to some missing some header include
>> (ContentSecurityPolicyHash.h, I believe it has to do with the qt5webkit source not working with the
> g++ version you got. Your g++ might be too new. type_traits has changed 
> a bit over the past, so that *might* have something to do with it.

Yes, that's very likely my new toolchain version that is triggering this
issue. I had a build passing with a slightly older toolchain. The toolchain
update has been driven by the need of fresher kernel headers for other
packages, but a solution could be to use a custom toolchain with only the
kernel headers update, not updating g++.

>  > and qtwebkit does not look alive, based on latest commits dates).
> It was deprecated in Qt 5.5 back in 2015. Some people forked it and kept 
> it alive until 2019 or so, and now there is another fork going on here:
>
> https://github.com/movableink/webkit
>
> The "official" recommendation is to use QtWebEngine or QtWebView, 
> whatever is more appropriate. But I could not get either of them to 
> build with buildroot, so YMMV.
>
> An embedded version of webkit is WPE, which is also available in 
> buildroot as WPEWEBKIT: https://webkit.org/wpe/

Thanks for the confirmation and the hints for new packages. I have given a
quick try to the fork, but it does not look any better. Some branches
mentioned in the README can not even be found in the repo. I guess I'll
need to get rid of/replace those dependencies.

Thanks,

Alexis
>
> Best regards
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-- 
Alexis Lothoré, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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