[GTK] Switch to use GTK4 by default

https://bugs.webkit.org/show_bug.cgi?id=264658

Reviewed by Michael Catanzaro.

Change USE_GTK4 default value to ON.

* Source/cmake/OptionsGTK.cmake:
* Tools/Scripts/make-dist:
(Distcheck.check_symbols):
(ensure_version_if_possible):
* Tools/gtk/manifest.txt.in:

Canonical link: https://commits.webkit.org/270765@main

Source/cmake/OptionsGTK.cmake

@@ -52,7 +52,7 @@ WEBKIT_OPTION_DEFINE(ENABLE_QUARTZ_TARGET "Whether to enable support for the Qua
 WEBKIT_OPTION_DEFINE(ENABLE_WAYLAND_TARGET "Whether to enable support for the Wayland windowing target." PUBLIC ON)
 WEBKIT_OPTION_DEFINE(ENABLE_X11_TARGET "Whether to enable support for the X11 windowing target." PUBLIC ON)
 WEBKIT_OPTION_DEFINE(USE_GBM "Whether to enable usage of GBM." PUBLIC ON)
-WEBKIT_OPTION_DEFINE(USE_GTK4 "Whether to enable usage of GTK4 instead of GTK3." PUBLIC OFF)
+WEBKIT_OPTION_DEFINE(USE_GTK4 "Whether to enable usage of GTK4 instead of GTK3." PUBLIC ON)
 WEBKIT_OPTION_DEFINE(USE_LCMS "Whether to enable support for image color management using libcms2." PUBLIC ON)
 WEBKIT_OPTION_DEFINE(USE_LIBBACKTRACE "Whether to enable usage of libbacktrace." PUBLIC ON)
 WEBKIT_OPTION_DEFINE(USE_LIBDRM "Whether to enable usage of libdrm." PUBLIC ON)

Tools/Scripts/make-dist

@@ -258,8 +258,8 @@ class Distcheck(object):
 
     def check_symbols(self, build_dir):
         check_bss = os.path.join(self.source_root, 'Tools', 'Scripts', 'check-for-global-bss-symbols-in-webkitgtk-libs')
-        libjsc = os.path.join(build_dir, 'lib', 'libjavascriptcoregtk-4.1.so')
-        libwk = os.path.join(build_dir, 'lib', 'libwebkit2gtk-4.1.so')
+        libjsc = os.path.join(build_dir, 'lib', 'libjavascriptcoregtk-6.0.so')
+        libwk = os.path.join(build_dir, 'lib', 'libwebkitgtk-6.0.so')
         subprocess.check_call([check_bss, libjsc, libwk])
 
         check_version_script = os.path.join(self.source_root, 'Tools', 'Scripts', 'check-for-invalid-symbols-in-version-script')
@@ -295,7 +295,7 @@ if __name__ == "__main__":
         if arguments.version is not None:
             return
 
-        pkgconfig_file = os.path.join(arguments.build_dir, "Source/WebKit/webkit2gtk-4.1.pc")
+        pkgconfig_file = os.path.join(arguments.build_dir, "Source/WebKit/webkitgtk-6.0.pc")
         if os.path.isfile(pkgconfig_file):
             p = subprocess.Popen(['pkg-config', '--modversion', pkgconfig_file], stdout=subprocess.PIPE, text="ascii")
             version = p.communicate()[0]

Tools/gtk/manifest.txt.in

@@ -107,4 +107,4 @@ file Tools/PlatformGTK.cmake
 
 directory ${CMAKE_BINARY_DIR}/Documentation/javascriptcoregtk-${WEBKITGTK_API_VERSION} Documentation/jsc-glib-${WEBKITGTK_API_VERSION}
 directory ${CMAKE_BINARY_DIR}/Documentation/webkit${WEBKITGTK_API_INFIX}gtk-${WEBKITGTK_API_VERSION} Documentation/webkit${WEBKITGTK_API_INFIX}gtk-${WEBKITGTK_API_VERSION}
-directory ${CMAKE_BINARY_DIR}/Documentation/webkit${WEBKITGTK_API_INFIX}gtk-web-extension-${WEBKITGTK_API_VERSION} Documentation/webkit${WEBKITGTK_API_INFIX}gtk-web-extension-${WEBKITGTK_API_VERSION}
+directory ${CMAKE_BINARY_DIR}/Documentation/webkit${WEBKITGTK_API_INFIX}gtk-web-process-extension-${WEBKITGTK_API_VERSION} Documentation/webkit${WEBKITGTK_API_INFIX}gtk-web-process-extension-${WEBKITGTK_API_VERSION}