[llvm-dev] Ninja hangs when I try to build

[Paul C. Anagnostopoulos via llvm-dev]

Thank you! I killed mspdbsrv and things got much further. Now I'm getting the usual message about switching from the 32-bit to the 64-bit linker, and then an "Unexpected PDB error; RPC (23)" message. This has been going on for awhile. 

Is there an easy way to turn off PDB creation?

At 12/8/2020 02:17 PM, Adrian McCarthy wrote:
>The program database manager is a separate process VS uses to compile debug info into a PDB.  The error happens when it's trying to update a PDB that was created (or last modified) by a newer version of the PDB manager.
>
><https://docs.microsoft.com/en-us/cpp/error-messages/compiler-errors-1/fatal-error-c1902?view=msvc-160>https://docs.microsoft.com/en-us/cpp/error-messages/compiler-errors-1/fatal-error-c1902?view=msvc-160
>
>I suspect you have more than one version of VS installed.
>
>I would close all instances of Visual Studio, check your environment to ensure that your build is set up to use the specific version you're expecting, and make sure there are no lingering processes running mspdbsrv.exe, and then try again.  If the problem recurs after that, I'd repeat but also delete the PDB files in question and force the compiler to rebuild them from scratch.