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31 lines
1.3 KiB
31 lines
1.3 KiB
//! This build script copies the `memory.x` file from the crate root into |
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//! a directory where the linker can always find it at build time. |
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//! For many projects this is optional, as the linker always searches the |
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//! project root directory -- wherever `Cargo.toml` is. However, if you |
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//! are using a workspace or have a more complicated build setup, this |
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//! build script becomes required. Additionally, by requesting that |
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//! Cargo re-run the build script whenever `memory.x` is changed, |
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//! updating `memory.x` ensures a rebuild of the application with the |
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//! new memory settings. |
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use std::env; |
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use std::fs::File; |
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use std::io::Write; |
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use std::path::PathBuf; |
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fn main() { |
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// Put `memory.x` in our output directory and ensure it's |
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// on the linker search path. |
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let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap()); |
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File::create(out.join("memory.x")) |
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.unwrap() |
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.write_all(include_bytes!("memory.x")) |
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.unwrap(); |
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println!("cargo:rustc-link-search={}", out.display()); |
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// By default, Cargo will re-run a build script whenever |
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// any file in the project changes. By specifying `memory.x` |
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// here, we ensure the build script is only re-run when |
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// `memory.x` is changed. |
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println!("cargo:rerun-if-changed=memory.x"); |
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}
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