[Webkit-unassigned] [Bug 243257] New: [webkitdirs] Avoid call to `xcodebuild -showsdks` when computing Xcode options

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=243257

            Bug ID: 243257
           Summary: [webkitdirs] Avoid call to `xcodebuild -showsdks` when
                    computing Xcode options
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: emw at apple.com

xcodebuild -showsdks can be noticeably slow. On my system, a warmed up invocation takes ~400 ms, and when switching to a new Xcode toolchain, it can take as long as 9 sec. We only need the list of SDKs available, not any information about their contents, and that can be found by enumerating the SDK directories in the current developer dir.

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