PackageCompiler is a Julia package with three main purposes:

1. Creating custom sysimages for reduced latency when working locally with packages that have high startup times.

2. Creating "apps" which are a bundle of files including an executable that can be sent and run on other machines without Julia being installed on that machine.

3. Creating a relocatable C library bundle form of Julia code.

For installation and usage instructions, see the documentation.

PackageCompiler 2.0 comes with a few breaking changes. Read the upgrade guide here for instructions on how to upgrade to version 2.0.