Cargo Features

libdt has no features set by default.

[dependencies]
libdt = { version = "2.0.3", features = ["macros"] }
macros = libdt-macros

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.

libdt-macros macros?