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nihalpasham / rustBoot

rustBoot is a standalone bootloader written entirely in `Rust`, designed to run on anything from a microcontroller to a system on chip. It can be used to boot into bare-metal firmware or Linux.
MIT License
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[Question] Toolchain and rustup packages #11

Closed xlouis027 closed 2 years ago

xlouis027 commented 2 years ago

Hi Nihal, I saw that in board nrf52840 use target thumbv7em-none-eabihf and rpi4 use target aarch64-unknown-none-softfloat. I checked it and found reference on https://rust-lang.github.io/rustup-components-history/. My question is how we know a board use what suitable target rustup package? Another point, what is the differences of stable and nightly toolchains, of x86_64-pc-windows-msvc and x86_64-pc-windows-gnu?

nihalpasham commented 2 years ago

Rust support for different platforms ("targets") are organized into three tiers, each with a different set of guarantees. You can find more information - https://doc.rust-lang.org/nightly/rustc/platform-support.html

Stable - the rust compiler (used to compile rust programs) is stable nightly - the rust compiler (used to compile rust programs) is not-stable i.e. it has some additions that are still under evaluation or testing.