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sunfishcode merged 1 commit into from
Oct 10, 2024
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docs: hello-world-small example size update #50

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6 changes: 3 additions & 3 deletions example-crates/hello-world-small/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -7,16 +7,16 @@ It uses the [workaround to support -Zbuild-std], and can be built with
a command like this:

```console
$ RUSTFLAGS="-Zlocation-detail=none -C relocation-model=static -Ctarget-feature=+crt-static" cargo +nightly run -Z build-std=std,panic_abort -Z build-std-features=panic_immediate_abort --target x86_64-unknown-linux-gnu --release
$ RUSTFLAGS="-Z location-detail=none -C relocation-model=static -Ctarget-feature=+crt-static" cargo +nightly run -Z build-std=std,panic_abort -Z build-std-features=panic_immediate_abort --target x86_64-unknown-linux-gnu --release
```

This applies all the techniques described on the [min-sized-rust] page
before [Remove `core::fmt` with `no_main` and Careful Usage of `libstd`].

As of this writing, this compiles to 37880 bytes. For comparison, using all
As of this writing, this compiles to 24,616 bytes. For comparison, using all
these same optimizations without Eyra, and using `x86_64-unknown-linux-musl`
(which produces smaller statically-linked binaries than
`x86_64-unknown-linux-gnu`), compiles to 50776 bytes.
`x86_64-unknown-linux-gnu`), compiles to 30,288 bytes.

If you're interested in going further down the `#![no_main]`/`#![no_std]`
path, consider [using Origin directly] which can get down to 408 bytes. Or,
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