emmake and emconfigure docs

1 files changed, 15 insertions, 1 deletions

diff --git a/emmake b/emmake
index 34568a2d..70e415a3 100644
--- a/emmake
+++ b/emmake
@@ -1,7 +1,21 @@
 #!/usr/bin/env python
 
 '''
-This is a helper script. See emcc.
+This is a helper script. It runs make for you, setting
+the environment variables to use emcc and so forth. Usage:
+
+  emmake make [FLAGS]
+
+Not that if you ran configure with emconfigure, then
+the environment variables have already been detected
+and set. This script is useful if you have no configure
+step, and your Makefile uses the environment vars
+directly.
+
+The difference between this and emconfigure is that
+emconfigure runs compilation into native code, so
+that configure tests pass. emmake uses Emscripten to
+generate JavaScript.
 '''
 
 import os, sys