Cargo Features

rings-snark has no features set by default.

[dependencies]
rings-snark = { version = "0.7.0", features = ["llvm"] }
llvm = wasmer-compiler-llvm

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

wasmer-compiler-llvm not wasm32 llvm?

Enables wasmer-compiler-llvm ^4.1.1