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+Building
+========
+
+The remote agent is included in the default Firefox build, but only
+ships on the Firefox Nightly release channel:
+
+	% ./mach run --remote-debugging-port
+
+The source code can be found under [remote/ in central].
+
+There are two build modes to choose from:
+
+Full build mode
+---------------
+
+The remote agent supports only Firefox, and is included when you
+build in the usual way:
+
+	% ./mach build
+
+When you make changes to XPCOM component files you need to rebuild
+in order for the changes to take effect.  The most efficient way to
+do this, provided you haven’t touched any compiled code (C++ or Rust):
+
+	% ./mach build faster
+
+Component files include the likes of components.conf,
+RemoteAgent.manifest, moz.build files, and jar.mn.
+All the JS modules (files ending with `.jsm`) are symlinked into
+the build and can be changed without rebuilding.
+The remote agent’s startup code found under remote/startup/
+is written in Rust and requires rebuilds when changed.
+
+You may also opt out of building the remote agent entirely by setting
+the `--disable-cdp` build flag in your [mozconfig]:
+
+	ac_add_options --disable-cdp
+
+
+Artifact mode
+-------------
+
+You may also use [artifact builds] when working on the remote agent.
+This fast build mode downloads pre-built components from the Mozilla
+build servers, rendering local compilation unnecessary.  To use
+them, place this in your [mozconfig]:
+
+	ac_add_options --enable-artifact-builds
+
+
+[remote/ in central]: https://searchfox.org/mozilla-central/source/remote
+[mozconfig]: ../build/buildsystem/mozconfigs.html
+[artifact builds]: https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Build_Instructions/Artifact_builds