Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: bc5bc3c2d6c3e7ae68eae2078b3989696ad18a8a
      
https://github.com/WebKit/WebKit/commit/bc5bc3c2d6c3e7ae68eae2078b3989696ad18a8a
  Author: John James Jacoby <[email protected]>
  Date:   2026-09-10 (Thu, 10 Sep 2026)

  Changed paths:
    M Source/cmake/WebKitMacros.cmake

  Log Message:
  -----------
  [Win][CMake] Forward MSVC-style definitions to Swift

https://bugs.webkit.org/show_bug.cgi?id=323791

Reviewed by Adrian Taylor.

The Swift Clang importer must use the same preprocessor definitions as C++
translation units. The helper that collects definitions from CMake compiler
flags recognizes GCC-style -D options, but Windows CMake flags use MSVC-style
/D options. This drops NDEBUG from Windows Release Swift imports and gives
Swift and C++ incompatible views of assertion-dependent types.

Recognize both attached and separated /D options and normalize them to -D
before forwarding them to the importer.

* Source/cmake/WebKitMacros.cmake:
(_webkit_cxx_preprocessor_definitions):

Canonical link: https://commits.webkit.org/320804@main



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