use std::env; use std::fs::File; use std::io::Write; use std::path::{Path, PathBuf}; fn main() { println!("cargo:rerun-if-changed=build.rs"); let out = env::var("OUT_DIR").unwrap(); let out_dir = &PathBuf::from(&out); compile_unlzma(); // Put the linker script somewhere the linker can find it File::create(out_dir.join("link.x")) .unwrap() .write_all(include_bytes!("link.x")) .unwrap(); println!("cargo:rustc-link-search={}", out_dir.display()); // Only re-run the build script when link.x is changed, // instead of when any part of the source code changes. println!("cargo:rerun-if-changed=link.x"); } pub fn compile_unlzma() { let cfg = &mut cc::Build::new(); cfg.compiler("clang"); cfg.no_default_flags(true); cfg.warnings(false); cfg.flag("-nostdlib"); cfg.flag("-ffreestanding"); cfg.flag("-fPIC"); cfg.flag("-fno-stack-protector"); cfg.flag("--target=armv7-none-eabihf"); cfg.flag("-O2"); let sources = vec![ "unlzma.c", ]; let root = Path::new("./"); for src in sources { println!("cargo:rerun-if-changed={}", src); cfg.file(root.join("src").join(src)); } cfg.compile("unlzma"); }