Allow linking _Concurrency
for WASI with Embedded Swift
#1863
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Currently, when building packages for WASI with Embedded Swift, libraries such as
libswift_Concurrency.a
andlibswift_ConcurrencyDefaultExecutor.a
are not discoverable and require passing-Xlinker <swift-sdk-path>/usr/lib/swift/embedded/wasm32-unknown-wasip1
option manually. This path can be inferred by the driver, which simplifies build invocations for users significantly, while the rest of linkage options (-lswift_Concurrency
etc) can be specified in toolset files.