On 31/03/2020 08:42, Keith Rollin wrote: Hi,
> Hi all, > > For several years now, Xcode has included two build systems: the “legacy” > build system and the newer “XCBuild” system (see, for example, > <https://developer.apple.com/videos/play/wwdc2018/408/> and > <https://developer.apple.com/videos/play/wwdc2018/415>, as well as > <https://medium.com/xcblog/xcode-new-build-system-for-speedy-swift-builds-c39ea6596e17> > and > <https://medium.com/xcblog/five-things-you-must-know-about-xcode-10-new-build-system-41676cd5fd6c>). > > WebKit is finally in a position to move to the new build system. However, > this switch is not without consequences. In particular, WebKit has a > complicated build process and requires new XCBuild features only found in > Xcode 11.4. If you build from within the IDE, you will need Xcode 11.4 or > later. Pre-releases have been available for some time on developer.apple.com, > but the final version of Xcode 11.4 was posted to the Mac App Store last week > on March 24, 2020. Out of curiosity, what will be the benefits brought by XCBuild for WebKit developers? (sorry for asking but I don't have time to watch the videos and skimming over the blog post, it seems it's mostly performance improvement for swift compilation?) > When building from the command line, the conditions are less strict. By > default, builds are performed with XCBuild if the `build-webkit` script or > the makefiles detect that Xcode 11.4 or later is installed. If not, builds > are performed with the legacy build system. We can be flexible here because > the build process is controlled by these scripts and makefiles, allowing the > build process to determine the Xcode version before invoking `xcodebuild`. > There is no such opportunity when building within the Xcode IDE, and so the > build requirements are stricter. > > I’ve made the changes to switch over to XCBuild but I haven’t yet posted > them. I want to first find out if this move will cause any issues for > developers who — for whatever reason — need to stay on old versions of Xcode. > If so, please let me know. So I'm not sure I understand but concretely, am I already using the new system if I use the build-script, I've upgraded to XCode 11.4 and rebuilt WebKit from scratch? How can I know which build system I'm using? Or do you mean you have a patch for WebKit that is pending to land? If so, what's the bug number? Thanks, -- Frédéric Wang _______________________________________________ webkit-dev mailing list webkit-dev@lists.webkit.org https://lists.webkit.org/mailman/listinfo/webkit-dev
