313900 2026-05-02 07:55:18 -0700 [WebKitLegacy] Eliminate WK_BUILD_FOR_TESTING by refactoring to Objective-C class method SPI 2026-05-04 13:55:26 -0700 1 1 1 Unclassified WebKit WebKit Misc. WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 217960 1 ddkilzer ddkilzer webkit-bug-importer oldest_to_newest 2206881 0 ddkilzer 2026-05-02 07:55:18 -0700 WebKitLegacy.framework uses the `WK_BUILD_FOR_TESTING` mechanism to conditionally export `TestWebPreferencesCacheModelForMainBundle()` for TestWebKitAPI. This is the only testing symbol exported from WebKitLegacy, and its sole consumer is the `WebKitLegacy.CacheModelForMainBundle` API test. The mechanism prevents TestWebKitAPI from linking to WebKitLegacy.framework in Production builds because the testing symbol is not exported in the Production configuration. It is also overly complex for one symbol, involving six coordinated pieces: the `WK_BUILD_FOR_TESTING` xcconfig variable, the `-DENABLE_BUILD_FOR_TESTING` compiler flag, the `#if ENABLE(BUILD_FOR_TESTING)` guard in `WebPreferences.mm`, the `-extra-private-header TestingFunctions.h` TAPI flag, the `WebKit.Testing.exp` export symbol list, and a conditional block in the "Generate Export Files" build phase script. 2206882 1 webkit-bug-importer 2026-05-02 07:55:26 -0700 <rdar://problem/176091724> 2206884 2 ddkilzer 2026-05-02 08:01:09 -0700 *** Bug 313841 has been marked as a duplicate of this bug. *** 2206885 3 ddkilzer 2026-05-02 08:03:39 -0700 Pull request: https://github.com/WebKit/WebKit/pull/64106 2207346 4 ews-feeder 2026-05-04 13:55:24 -0700 Committed 312551@main (029c5391653d): <https://commits.webkit.org/312551@main> Reviewed commits have been landed. Closing PR #64106 and removing active labels.