[Development] CMake branch

[Mikhail Svetkin]

> I find it hard to believe that this improves the quality of Qt 5.14 or 5.15. Effectively you are proposing that we don't have any blocking CI for those two Qt releases. Otherwise you would have to implement very intrinsic rules when to block and when not to block. Even seemingly innocent/unrelated doc changes have been known to break Qt builds.

I think maybe it is some kind of misunderstanding here.
The CI will be enable. It will not test CMake.
Even CMake won't be tested it will still need to go through the CI.


Best regards,
Mikhail
________________________________
From: Volker Hilsheimer
Sent: Thursday, March 21, 2019 1:51 PM
To: Mikhail Svetkin
Cc: development at qt-project.org
Subject: Re: [Development] CMake branch

On 21 Mar 2019, at 13:00, Mikhail Svetkin <Mikhail.Svetkin at qt.io<mailto:Mikhail.Svetkin at qt.io>> wrote:


Hi everyone!

We’ve had an internal discussion about wip/cmake branch.

We thought maybe it is a good idea to merge wip/cmake into dev branch.

The advantages are:
 - It allows our contributors to play with CMake in dev branch
 - Speed-up the build of QtBase
 - Easy to find a lot of bugs in CMake port
 - CI could have a nightly build with CMake and generate a report
 - We can synchronize CMakeFiles and *.pro files

The disadvantages are:
 - Any changes should be passed by CI

Do you have any objections?


I’m fully supporting this proposal.


By doing the cmake work in a separate branch, we are keeping this hidden from everyone else. That was the right thing to do while we didn’t know if we want to go with it and what the structural implications of this change will be, but now we know, and it’s time to move this work into the mainline.

Having this in a branch prevents people that can help out from doing so effectively, and generally introduces a lot of waste.


Of course, more changes hitting dev means more CI runs, and there’ll likely be some unsupported cmake files in the next releases made off of dev, but that doesn't do any harm.


Volker


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