Cargo Features

[dependencies]
opaque-pointer = { version = "0.8.11", default-features = false, features = ["std", "lender", "alloc", "c-types"] }
default = std

The std feature is set by default whenever opaque-pointer is added without default-features = false somewhere in the dependency tree.

std default c-types?

Affects opaque-pointer::c, opaque-pointer::raw, opaque-pointer::free, opaque-pointer::own_back

lender = lazy_static
alloc

If you do not use std then you need alloc feature

Affects opaque-pointer::raw, opaque-pointer::free, opaque-pointer::own_back

c-types = std

Allow to use some FFI for C types

Affects opaque-pointer::c

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.

lazy_static lender?