From de103a5f4fba5e913988928e22301b4ee05e8515 Mon Sep 17 00:00:00 2001 From: Ulf Lilleengen Date: Thu, 20 Oct 2022 16:12:59 +0200 Subject: Add missing files and features for basic example --- docs/modules/ROOT/examples/basic/build.rs | 35 +++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 docs/modules/ROOT/examples/basic/build.rs (limited to 'docs/modules/ROOT/examples/basic/build.rs') diff --git a/docs/modules/ROOT/examples/basic/build.rs b/docs/modules/ROOT/examples/basic/build.rs new file mode 100644 index 000000000..30691aa97 --- /dev/null +++ b/docs/modules/ROOT/examples/basic/build.rs @@ -0,0 +1,35 @@ +//! This build script copies the `memory.x` file from the crate root into +//! a directory where the linker can always find it at build time. +//! For many projects this is optional, as the linker always searches the +//! project root directory -- wherever `Cargo.toml` is. However, if you +//! are using a workspace or have a more complicated build setup, this +//! build script becomes required. Additionally, by requesting that +//! Cargo re-run the build script whenever `memory.x` is changed, +//! updating `memory.x` ensures a rebuild of the application with the +//! new memory settings. + +use std::env; +use std::fs::File; +use std::io::Write; +use std::path::PathBuf; + +fn main() { + // Put `memory.x` in our output directory and ensure it's + // on the linker search path. + let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap()); + File::create(out.join("memory.x")) + .unwrap() + .write_all(include_bytes!("memory.x")) + .unwrap(); + println!("cargo:rustc-link-search={}", out.display()); + + // By default, Cargo will re-run a build script whenever + // any file in the project changes. By specifying `memory.x` + // here, we ensure the build script is only re-run when + // `memory.x` is changed. + println!("cargo:rerun-if-changed=memory.x"); + + println!("cargo:rustc-link-arg-bins=--nmagic"); + println!("cargo:rustc-link-arg-bins=-Tlink.x"); + println!("cargo:rustc-link-arg-bins=-Tdefmt.x"); +} -- cgit