Set up (MacOS)

1. Add x86_64 target architecture for Rust

rustup target add x86_64-unknown-linux-musl

2. Install cross system C linker

sudo brew install filosottile/musl-cross/musl-cross

3. Create .cargo/config and target x86_64 architecture for linux

echo $'[target.x86_64-unknown-linux-musl]\nlinker = "x86_64-linux-musl-gcc"' > .cargo/config

Build

1. Build the project with the target

TARGET_CC=x86_64-linux-musl-gcc \ RUSTFLAGS="-C linker=x86_64-linux-musl-gcc" \ cargo build --release --target x86_64-unknown-linux-musl

2. Packaging binaries and zipping them into lambda.zip file

cp ./target/x86_64-unknown-linux-musl/release/lambda_rust ./bootstrap && zip lambda.zip bootstrap && rm bootstrap

Deploy

Deployment is manual at the moment

1. Sign in to AWS console and navigate to Lambda section
2. Create Lambda by choosing custom runtime option
3. Deploy the .zip file

Lambda test event

{
  "message": "Hello from Rust"
}