Merge pull request #10963 from CodingCarpincho/sdk-root-cherry-pick

Use the root directory as the SDK root on POSIX platforms

Author: JDevlieghere

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);

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() {