This directory contains build system files related to the Bazel build system. https://bazel.build/

Specifically, files named *.bzl are Skylark extensions. https://bazel.build/versions/master/docs/skylark/concepts.html

This folder is intended to house skylark code used by Drake. It contains both generic functions such as pathutils.bzl, and widely-used but drake-specific functions such as the drake_{cc,java,py,...}.bzl language-specific helpers.