# Briefcase configuration options

## Environment variables

### `BRIEFCASE_HOME`

When briefcase runs, it will download the support files, tools, and SDKs necessary to support building and packaging apps. By default, it will store the files in a platform-native cache folder:

- macOS: `~/Library/Caches/org.beeware.briefcase`
- Windows: `%LOCALAPPDATA%\BeeWare\briefcase\Cache`
- Linux: `~/.cache/briefcase`

If you want to use a different folder to store the Briefcase resources, you can define a `BRIEFCASE_HOME` environment variable.

There are three restrictions on this path specification:

1. The path must already exist. If it doesn't exist, you should create it manually.
2.  It *must not* contain any spaces.
3.  It *must not* be on a network drive.

The second two restrictions both exist because some of the tools that Briefcase uses (in particular, the Android SDK) do not work in these locations.
