Bazel vs Rake

Bazel is a free, open-source tool for automating software builds and tests across languages and platforms. Projects define targets in BUILD files using Starlark, which can also be used to create custom rules and macros. Bazel caches prior work and rebuilds what needs to change, while running tasks in parallel. It supports languages including C++, Java, Kotlin, Python, Go, and Rust, with outputs for desktop, server, Android, and iOS. Bazel runs on Linux, macOS, and Windows, and the documentation describes builds with 100,000 or more source files across multiple repositories. Sandboxing can make builds and tests more hermetic, and failures return a non-zero exit code for basic CI integration. Teams can share outputs through a remote cache, but must select and maintain its backend and secure access because it can contain binaries. IDE options include plugins for IntelliJ, Android Studio, CLion, and Visual Studio Code, plus Xcode integration. Bazel is not well suited to uncached deployment steps that change cloud configuration.

Rake is a Make-like task runner written in Ruby for defining tasks and their dependencies. Its Rakefiles use standard Ruby syntax, and tasks can declare prerequisite tasks. Rule patterns can generate implicit tasks, while FileLists provide array-like handling for file names and paths. Rake includes packaged tasks, including tasks for building tarballs, and can execute tasks in parallel. The documentation’s example has a default task call a test task that runs a Ruby unit test file. Rake runs on Linux, macOS, and Windows; the project lists Ruby 2.0.0 or later as a requirement. Installation is with `gem install rake`. Rake is free under an MIT-style license, with a listed plan of free. The project credits Jim Weirich as its original creator and Hiroshi SHIBATA as maintainer of Rake 10 and later. It is provided as is, without express or implied warranties.