[all-commits] [llvm/llvm-project] b7c81c: On Windows, make the release script work with the ...

[Alexandre Ganea via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b7c81c1f91994fb6938875b62337ddc2a49bfd51
      https://github.com/llvm/llvm-project/commit/b7c81c1f91994fb6938875b62337ddc2a49bfd51
  Author: Alexandre Ganea <37383324+aganea at users.noreply.github.com>
  Date:   2024-01-17 (Wed, 17 Jan 2024)

  Changed paths:
    M llvm/utils/release/build_llvm_release.bat

  Log Message:
  -----------
  On Windows, make the release script work with the local git checkout (#78273)

Add two new flags to the release script:
  `--skip-checkout` builds from the local source folder, instead of the downloaded source package
  `--local-python` uses whichever local Python version is installed, instead of a specific version (3.10)

If the LLVM source is already in `C:\git\llvm-project` then one can do in a admin prompt:
```
C:\git>llvm-project\llvm\utils\release\build_llvm_release.bat --version 18.0.0 --x64 --skip-checkout
...
```
This allows for iterating more easily on build issues, just before a new LLVM package is made.

Also fix some warnings on the second stage build (`-Wbackend-plugin`).