dist/ - Final JoeyLib binaries, header files, and helper scripts
sdks/ - Various tools needed to work with some of the supported platforms
joeylib/ - The source code to JoeyLib itself
joeyDev.sh - A script to run to set up your system environment to use JoeyLib
If you are low on space, you can delete installWork/ once you have built all the desired JoeyLib platforms. However, re-running the installer to update or modify your JoeyLib binaries will re-download and re-create much of what is stored there.