//! generate 2000 constants for testing use std::{fs::write, path::PathBuf}; fn main() -> std::io::Result<()> { let out_dir = std::env::var("OUT_DIR").expect("OUT_DIR is not defined"); let mut output = String::new(); for i in 0..2000 { let line = format!("/// Some const A{0}\npub const A{0}: isize = 0;\n", i); output.push_str(&*line); }; write(&[&*out_dir, "huge_amount_of_consts.rs"].iter().collect::(), output) }