Rust crosscompile linker not found

SirFed

Hello, I am trying to cross compile a Rust project for arm (BeagleBone) but whenever I try to build I get the error "linker not found". Does anyone know how I can fix this?

I attached a picture of the terminal.

EDIT: just to clarify, I followed the the rust-cross cargo cross compile guide to the letter and still get the same issue.

davidjharder

SirFed I know basically nothing about this topic, but the repo has arm-none-eabi-gcc which sounds promising

SirFed

In the .cargo/config folder I replaced the old linker with that:

[target.arm-unknown-linux-gnueabihf]
linker = "arm-linux-gnueabihf-gcc"

[target.arm-unknown-linux-gnueabi]
linker = "arm-none-eabi-gcc"

and fails to link.

davidjharder

Sorry, nothing more to offer. Take the easy path and install Ubuntu in a virtual machine?

DataDrake

You are trying to cross-compile for a toolchain that we don't currently support. arm-none-eabi-gcc is meant for bare-metal (no OS) programming, not Linux executables. You'll need to install the actually arm-none-linux-gnueabihf cross-compiler from somewhere else, possibly: https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-a/downloads

SirFed

DataDrake I see, so just to be sure, since I want to use it on a 32bit arm cpu I should use this file right?

gcc-arm-9.2-2019.12-x86_64-arm-none-linux-gnueabihf.tar.xz

Also thanks for clearing up what the eabi/gnueabihf difference is! I am new to this and still learning a lot.

DataDrake

SirFed Correct. You would want aarch64 for a 64-bit ARM target.