swift
471aea85 - [ExplicitModuleBuild] Support `-vfsoverlay` swift option

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1 year ago
[ExplicitModuleBuild] Support `-vfsoverlay` swift option Support `-vfsoverlay` swift option for explicit module build (including caching build). Previously, if the interface file is discovered from a location that is remapped by overlay, module cannot be built correctly. Make sure the overlay options are passed down to all interface compilaiton command. For caching build, need to make sure the overlay itself is part of the CAS file system so the downstream compilation can discover that. rdar://123655183
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