Building Rust from Source with Autodiff on Mac OS
Core Problem
Attempting to build Rust from source with autodiff support on a Mac OS system is failing due to a RuntimeError. The build process is using the latest configuration options, but it's not resolving the issue.
Solution & Analysis
To resolve this issue, let's go through some steps:
Step 1: Update the Bootstrap Configuration
Ensure that the bootstrap configuration file (bootstrap.toml) is up-to-date and reflects the current configuration options. In this case, the llvm.download-ci-llvm option should be set to true.
Step 2: Try Different Build Options
Try different build options by setting llvm.enzyme to false. This will help determine if the issue is related to autodiff or Enzyme.
./configure --release-channel=nightly --enable-llvm-enzyme --enable-llvm-assertions --enable-option-checking --disable-docs --set llvm.download-ci-llvm=true
Step 3: Verify Build Dependencies
Verify that all build dependencies are installed and up-to-date. This includes checking the LLVM version, clang, and lld.
Step 4: Use a Different Rust Clone
Try building with a different Rust clone to see if it resolves the issue.
git clone --depth 1 [email protected]:rust-lang/rust.git rust2
cd rust2
Conclusion
Building Rust from source with autodiff support on Mac OS requires careful configuration and dependency management. By updating the bootstrap configuration, trying different build options, verifying build dependencies, and using a different Rust clone, you should be able to resolve the issue. If the problem persists, consider reaching out to the Rust community or seeking further assistance.
This command will generate a detailed build log that can help diagnose the issue.