RESOLVED FIXED300234
Fix "Skipping duplicate build file in Copy Headers build phase" warnings in WebCore 
https://bugs.webkit.org/show_bug.cgi?id=300234
Summary Fix "Skipping duplicate build file in Copy Headers build phase" warnings in W...
Sam Weinig
Reported 2025-10-06 06:42:04 PDT
When building WebCore, there are a number of these "Skipping duplicate build file in Copy Headers build phase" warnings: ``` Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/css/calc/CSSCalcTree+Evaluation.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/css/calc/CSSCalcTree+Evaluation.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/css/calc/CSSCalcTree+Simplification.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/css/calc/CSSCalcTree+Simplification.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/css/values/color/CSSPlatformColorResolutionState.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/css/values/color/CSSPlatformColorResolutionState.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/webtransport/DatagramSource.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/webtransport/DatagramSource.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/fetch/FetchBody.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/fetch/FetchBody.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/fetch/FetchBodyOwner.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/fetch/FetchBodyOwner.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/fetch/FormDataConsumer.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/fetch/FormDataConsumer.h Skipping duplicate build file in Copy Headers build phase: [...]/WebKitBuild/Debug/DerivedSources/WebCore/JSMediaMetadata.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/encryptedmedia/MediaKeyEncryptionScheme.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/encryptedmedia/MediaKeyEncryptionScheme.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/encryptedmedia/MediaKeySessionType.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/encryptedmedia/MediaKeySessionType.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/encryptedmedia/MediaKeySystemConfiguration.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/encryptedmedia/MediaKeySystemConfiguration.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/encryptedmedia/MediaKeySystemMediaCapability.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/encryptedmedia/MediaKeySystemMediaCapability.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/mediastream/MediaStreamTrackProcessor.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/mediastream/MediaStreamTrackProcessor.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/streams/ReadableStream.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/streams/ReadableStream.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/mediastream/RTCIceTransport.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/style/values/color/StyleColorResolutionState.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/style/values/color/StyleColorResolutionState.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/style/StyleInterpolationFunctions.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/style/values/primitives/StyleLengthWrapperData.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/style/values/primitives/StylePrimitiveKeyword+CSSValueConversion.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/style/values/primitives/StylePrimitiveKeyword+CSSValueConversion.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/style/values/svg/StyleSVGPaint.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/style/values/svg/StyleSVGPaint.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/svg/properties/SVGAnimatedPropertyImpl.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/svg/properties/SVGAnimationAdditiveListFunctionImpl.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/rendering/svg/SVGPaintServerHandling.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/layout/formattingContexts/table/TableFormattingContext.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/layout/formattingContexts/table/TableFormattingState.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/layout/formattingContexts/table/TableGrid.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/style/TreeResolutionState.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/style/TreeResolutionState.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/webtransport/WebTransportBidirectionalStreamSource.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/webtransport/WebTransportBidirectionalStreamSource.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/webtransport/WebTransportReceiveStreamSource.h Skipping duplicate build file in Copy Headers build phase: [...]/Source/WebCore/Modules/webtransport/WebTransportReceiveStreamSource.h ```
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Sam Weinig
Comment 1 2025-10-06 06:45:15 PDT
Pull request: https://github.com/WebKit/WebKit/pull/51869
EWS
Comment 2 2025-10-11 16:26:37 PDT
Committed 301367@main (2c9ece7f0944): <https://commits.webkit.org/301367@main> Reviewed commits have been landed. Closing PR #51869 and removing active labels.
Radar WebKit Bug Importer
Comment 3 2025-10-11 16:27:12 PDT
<rdar://problem/162448659>
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