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Fixing rust-lld Error in aarch64-pc-windows-gnullvm Builds

Core Problem

The aarch64-pc-windows-gnullvm target is failing to build due to an error with the rust-lld linker. The specific issue is a reference to an undefined symbol: __chkstk.

Solution & Analysis

To fix this issue, you need to install the rust-mingw component. This component provides the necessary libraries for building Rust applications on Windows.

Install rust-mingw

Add the following line to your .cargo/config.toml file: 

[target.aarch64-pc-windows-gnullvm]
linker = "rust-lld"
rust-link-libs = ["mingw32", "mingwex"]
The rust-link-libs option specifies the libraries that should be linked with the executable. In this case, we need to include the mingw32 and mingwex libraries.

Verify Installation

After installing rust-mingw, verify that it has been correctly installed by running: 

cargo --version
This should display the version of Cargo and Rust that you are using.

Conclusion

By adding the rust-mingw component to your .cargo/config.toml file, you can fix the error with the aarch64-pc-windows-gnullvm target. This will allow you to build your application successfully on Windows.

Reference