Macro manifest_dir 

manifest_dir!() { /* proc-macro */ }

Proc macro that returns the source crate’s manifest directory as a string literal (its CARGO_MANIFEST_DIR at compile time).

Exposing this lets a downstream binding crate locate the marked source crate wherever it lives (a path/git/registry dependency) without guessing layout — e.g. to compile a size/alignment probe against it. This complements prebindgen_out_dir! and features!.

Returns

A string literal with the absolute path to the source crate’s manifest dir.

Example

use prebindgen_proc_macro::manifest_dir;

// Create a public constant for use by binding crates
pub const MANIFEST_DIR: &str = manifest_dir!();