diff --git a/Makefile b/Makefile
index 8816020..57bc175 100644
--- a/Makefile
+++ b/Makefile
@@ -34,7 +34,7 @@ KERNELVERSION	:= $(shell uname -r)
 
 all:
 
-include eeprom/Module.mk
-include include/Module.mk
-include stub/Module.mk
-include tools/Module.mk
+EXTRA	:=
+#EXTRA	+= py-smbus
+SRCDIRS	:= eeprom include stub tools $(EXTRA)
+include $(SRCDIRS:%=%/Module.mk)
diff --git a/README b/README
index 700bf88..f2e58ca 100644
--- a/README
+++ b/README
@@ -50,6 +50,11 @@ Optionally, you can run "make strip" prior to "make install" if you want
 smaller binaries. However, be aware that this will prevent any further
 attempt to debug the programs.
 
+If you wish to include sub-directories that are not enabled by default, then
+just set them via the EXTRA make variable. For example, to build py-smbus,
+do:
+  $ make EXTRA="py-smbus"
+
 
 DOCUMENTATION
 -------------
diff --git a/py-smbus/Module.mk b/py-smbus/Module.mk
new file mode 100644
index 0000000..1baea51
--- /dev/null
+++ b/py-smbus/Module.mk
@@ -0,0 +1,31 @@
+# Python bindings for Linux SMBus access through i2c-dev
+#
+# Copyright (C) 2009  Mike Frysinger <vapier@gentoo.org>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+
+PY_SMBUS_DIR := py-smbus
+
+PYTHON ?= python
+DISTUTILS := \
+	cd $(PY_SMBUS_DIR) && \
+	CPPFLAGS="$(CPPFLAGS) -I../include" $(PYTHON) setup.py
+
+all-python:
+	$(DISTUTILS) build
+
+clean-python:
+	$(DISTUTILS) clean
+	rm -rf py-smbus/build
+
+install-python:
+	$(DISTUTILS) install
+
+all: all-python
+
+clean: clean-python
+
+install: install-python