# Rules Foreign CC Toolchains

This package contains implementations for toolchains required for the supported build systems.

## Built Toolchains

These toolchains are for build tools that are built from source.

## PreBuilt Toolchains

These toolchains are for build tools that are built and stored at some remote site and downloaded when required by
any target currently in the build graph.

## PreInstalled Toolchains

These toolchains are for build tools already installed on the host.