Use the root directory as the SDK root on POSIX platforms #10963
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LLDB has the concept of an "SDK root", which expresses where the system libraries and so which are necessary for debugging can be found. On POSIX platforms, the SDK root is just the root of the file system, or /. We need to implement the appropriate method on HostInfoPosix to prevent the use of the default implementation for which just returns an error. This change is needed to support the Swift REPL but may be useful for other use cases as well.
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LLDB has the concept of an "SDK root", which expresses where the system libraries and so on which are necessary for debugging can be found. On POSIX platforms, the SDK root is just the root of the file system, or /.
We need to implement the appropriate method on HostInfoPosix to prevent the use of the default implementation which just returns an error.
This change is needed to support the Swift REPL but may be useful for other use cases as well.