diff --git a/lldb/include/lldb/Host/posix/HostInfoPosix.h b/lldb/include/lldb/Host/posix/HostInfoPosix.h
index 767f353f15150..bf80786dcade3 100644
--- a/lldb/include/lldb/Host/posix/HostInfoPosix.h
+++ b/lldb/include/lldb/Host/posix/HostInfoPosix.h
@@ -43,7 +43,9 @@ class HostInfoPosix : public HostInfoBase {
   static bool ComputeSwiftResourceDirectory(FileSpec &lldb_shlib_spec,
                                             FileSpec &file_spec, bool verify);
 #endif
-  
+
+  static llvm::Expected<llvm::StringRef> GetSDKRoot(SDKOptions options);
+
 protected:
   static bool ComputeSupportExeDirectory(FileSpec &file_spec);
   static bool ComputeHeaderDirectory(FileSpec &file_spec);
diff --git a/lldb/source/Host/posix/HostInfoPosix.cpp b/lldb/source/Host/posix/HostInfoPosix.cpp
index 390bda7dc4010..b8606e85bbdb1 100644
--- a/lldb/source/Host/posix/HostInfoPosix.cpp
+++ b/lldb/source/Host/posix/HostInfoPosix.cpp
@@ -117,6 +117,12 @@ std::optional<std::string> PosixUserIDResolver::DoGetGroupName(id_t gid) {
   return std::nullopt;
 }
 
+/// The SDK is the directory where the system C headers, libraries, can be found.
+/// On POSIX platforms this is simply the root directory.
+llvm::Expected<llvm::StringRef> HostInfoPosix::GetSDKRoot(SDKOptions options) {
+  return "/";
+}
+
 static llvm::ManagedStatic<PosixUserIDResolver> g_user_id_resolver;
 
 UserIDResolver &HostInfoPosix::GetUserIDResolver() {