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clj.native-cli

This project serves as a starting point for creating native CLI tools with Clojure and GraalVM.

The template uses Clojure 1.9, clojure.tools.cli for argument parsing, and clj.native-image for GraalVM native-image integration.

Usage

1. Obtain the template:
   • Use GitHub's create from template feature, or...
   • Download/unpack the latest release into a directory e.g. my-script-name:

   $ curl -L https://github.com/taylorwood/clj.native-cli/archive/v0.0.2.tar.gz > release.tar.gz \
     && tar -xzf release.tar.gz && rm release.tar.gz \
     && mv clj.native-cli-0.0.2 my-script-name
   

2. Make src/script.clj do something interesting. See deps.edn for dependencies and clj.native-image options.
3. Run your program e.g. print CLI usage help:

   $ clojure -m script -h
   Usage:
     -h, --help
   

4. Compile a native executable:

   $ clojure -A:native-image
   $ ./script -h
   Usage:
     -h, --help
   

You may find a script useful for instantiating this template:

#!/usr/bin/env bash
SCRIPT_NAME=$1
RELEASE_VER="0.0.2"
[[ -z "$SCRIPT_NAME" ]] && echo "A script name is required!" && exit 1
curl -L https://github.com/taylorwood/clj.native-cli/archive/v${RELEASE_VER}.tar.gz > release.tar.gz \
  && tar -xzf release.tar.gz && rm release.tar.gz \
  && mv clj.native-cli-${RELEASE_VER} ${SCRIPT_NAME}

And execute it with some script name:

$ ./new-clj-script my-script-name