[Lldb-commits] [lldb] Reland "[lldb][RPC] Upstream lldb-rpc-gen tool" (#146969)" Attempt 2 (PR #148996)

[LLVM Continuous Integration via lldb-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `lldb-aarch64-ubuntu` running on `linaro-lldb-aarch64-ubuntu` while building `lldb` at step 4 "build".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/59/builds/21507

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 4 (build) failure: build (failure)
ninja: error: 'include/lldb/SBDefines.h', needed by 'tools/lldb/tools/lldb-rpc/DerivedHeaders/SBDefines.h', missing and no known rule to make it

```

</details>

https://github.com/llvm/llvm-project/pull/148996