Lib.rs

Cargo Features

[dependencies]
usdt = { version = "0.5.0", default-features = false, features = ["asm"] }

default = asm

The asm feature is set by default whenever usdt is added without default-features = false somewhere in the dependency tree.

asm default = dtrace-parser

Enables asm of usdt-attr-macro, usdt-impl, and usdt-macro

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.

NOTE: The use of path and version dependencies is deliberate and load-bearing.

When building from source, this will select the version in the workspace, by path. When publishing the specific version will be used. Combined with the exact version requirements, this prevents issues like oxidecomputer/usdt#69, where the public-facing usdt crate may pick up different versions of the internal implementation crates.

dtrace-parser asm