[Webkit-unassigned] [Bug 282276] New: [Win] Cross-compiling the Windows port from Linux

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=282276

            Bug ID: 282276
           Summary: [Win] Cross-compiling the Windows port from Linux
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: PC
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CMake
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ian.grunert at gmail.com

It would make it easier for more WebKit maintainers to fix Windows build issues. It's more likely that contributors have a Linux dev environment setup than a Windows one.

Windows compiles under clang-cl now, and links with lld-link, so no MASM.exe to worry about.

We'll need something like https://github.com/Jake-Shadle/xwin to download the Microsoft CRT headers and libraries, and Windows SDK headers and libraries - we might want to integrate it into the existing script that downloads WebKitRequirements and put the files in WebKitLibraries.

Use the /vctoolsdir and /winsdkdir flags for clang-cl to point at the CRT and SDK directories, which should expand out into the required compilation / linker flags.

Some CMake changes will be needed to duct tape these pieces together - in particular the /vctoolsdir and /winsdkdir flags.

Might require some changes to Scripts like build-webkit etc.

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Running the MiniBrowser / jsc via wine might need other changes, but being able to build would be the first step.

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