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Overlay: adjust flags and VFS overlay #83379

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Merged
merged 2 commits into from
Jul 29, 2025
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compnerd
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Adjust the transitive flags for CRT and adjust the VFS generation. These were causing trouble for building the C++ interop libraries on Windows without an existing SDK.

We concatenated the path without consideration for the path separator as
the path separator was expected to be present. This is not guaranteed.
Explicitly add the missing separator which is required to construct the
proper path.
@compnerd
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@swift-ci please smoke test

When building against the build tree, we need to ensure that the flags
for the ClangModule propagate. This is required to ensure that we get
the modules visible even when building the rest of the SDK.
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@swift-ci please smoke test

@compnerd compnerd enabled auto-merge July 29, 2025 00:14
@compnerd compnerd merged commit 597aaba into swiftlang:main Jul 29, 2025
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@compnerd compnerd deleted the overlay-flags branch July 29, 2025 05:16
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2 participants