From 56845b6aff05a7a6a9aa3b916605eee8184be09b Mon Sep 17 00:00:00 2001
From: Damien George <damien.p.george@gmail.com>
Date: Wed, 29 Jun 2016 14:25:12 +0100
Subject: [PATCH] esp8266/README: Describe how to build mpy-cross.

---
 esp8266/README.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/esp8266/README.md b/esp8266/README.md
index 0509a3799..5965fa4bc 100644
--- a/esp8266/README.md
+++ b/esp8266/README.md
@@ -39,6 +39,12 @@ $ git submodule update --init
 See the README in the repository root for more information about external
 dependencies.
 
+The MicroPython cross-compiler must be built to pre-compile some of the
+built-in scripts to bytecode.  This can be done using:
+```bash
+$ make -C mpy-cross
+```
+
 Then, to build MicroPython for the ESP8266, just run:
 ```bash
 $ cd esp8266
-- 
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