Bug 264658 – [GTK] Switch to use GTK4 by default

• Status: RESOLVED
• Resolution: FIXED
• Component: WebKitGTK

[Carlos Garcia Campos]

Change USE_GTK4 default value to ON.

[Carlos Garcia Campos]

Pull request: https://github.com/WebKit/WebKit/pull/20361

[EWS]

Committed 270765@main (80028d273216): <https://commits.webkit.org/270765@main>

Reviewed commits have been landed. Closing PR #20361 and removing active labels.

[Diego Pino]

After this change Ubuntu LTS bot was failing with the following error:

https://build.webkit.org/#/builders/68/builds/29215

```
CMake Error at Source/cmake/WebKitFeatures.cmake:323 (message):
  USE_GTK4 conflicts with USE_SOUP2.  You must disable one or the other.
Call Stack (most recent call first):
  Source/cmake/WebKitFeatures.cmake:331 (_WEBKIT_OPTION_ENFORCE_CONFLICTS)
  Source/cmake/WebKitFeatures.cmake:356 (_WEBKIT_OPTION_ENFORCE_ALL_CONFLICTS)
  Source/cmake/OptionsGTK.cmake:164 (WEBKIT_OPTION_END)
  Source/cmake/WebKitCommon.cmake:232 (include)
  CMakeLists.txt:21 (include)
```

The bot built with USE_SOUP2=ON. After removing this setting the build was failing because libgtk4-dev was not installed. This bot builds using only system libraries, so libgtk4-dev has to be added to the list of WebKitGTK dependency packages.

[Diego Pino]

Re-opening for pull request https://github.com/webkit/webkit/pull/20546

[EWS]

Committed 270775@main (cc67c85e30f9): <https://commits.webkit.org/270775@main>

Reviewed commits have been landed. Closing PR #20546 and removing active labels.