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[5.5] Avoid calling supportedFrontendFlags on Windows #3563

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Merged
merged 1 commit into from
Jun 22, 2021
Merged

[5.5] Avoid calling supportedFrontendFlags on Windows #3563

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5 changes: 5 additions & 0 deletions Sources/Build/BuildPlan.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -693,13 +693,18 @@ public final class SwiftTargetBuildDescription {
}

public static func checkSupportedFrontendFlags(flags: Set<String>, fs: FileSystem) -> Bool {
// The new driver is not supported on Windows, yet, so we should avoid calling into it there.
#if os(Windows)
return false
#else
do {
let executor = try SPMSwiftDriverExecutor(resolver: ArgsResolver(fileSystem: fs), fileSystem: fs, env: [:])
let driver = try Driver(args: ["swiftc"], executor: executor)
return driver.supportedFrontendFlags.intersection(flags) == flags
} catch {
return false
}
#endif
}

/// The arguments needed to compile this target.
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