The new aws-lc-sys-0.27.1 dependency started requiring cmake to build

[Veetaha]

I upgraded AWS SDK in our repo, but when I submitted my PR to CI our windows build failed with this:

 --- stderr
  Missing dependency: cmake

  thread 'main' panicked at C:\Users\Administrator\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\aws-lc-sys-0.27.1\builder\main.rs:382:40:
  called `Result::unwrap()` on an `Err` value: "Required build dependency is missing. Halting build."

Is there any way the cmake requirement can be removed? The builds worked just fine without it before.

Related PR: #4040

[aajtodd]

What target are you building for? On what platform are you building on?

The build requirements for aws-lc-rs are listed here. For common linux/macos targets the only thing required should be a working C compiler. For other targets cmake and/or other dependencies are required.

[Veetaha]

What target are you building for? On what platform are you building on?

Oh sorry, I totally missed to specify that. It's a Windows build that uses our custom Vagrant image. We could add CMake to that image, but I was thinking if that could be avoided at all;

More specifically it's windows2019-amd64

[aajtodd]

cmake is a required dependency to build aws-lc-rs on windows unfortunately. See the windows build deps. We understand this was a breaking build time change for some users, this was an intentional choice though. You can find more information on the changes in this discussion.

[Veetaha]

I see, that's unfortunate, but if it's intentional I'm closing the issue

[Veetaha]

Sorry, I couldn't keep myself from posting this 😳
https://www.reddit.com/r/rustjerk/comments/1jpt6j7/but_its_good_intentions/