From 631c51fc94575a7cfc88e5755eaf550e77622f8c Mon Sep 17 00:00:00 2001
From: Ulf Magnusson <ulfalizer@gmail.com>
Date: Sat, 6 Oct 2018 06:06:17 +0200
Subject: Point to IS_ENABLED() is README

Might be tricky to discover.
---
 README.rst | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'README.rst')

diff --git a/README.rst b/README.rst
index 9b3601b..173cd84 100644
--- a/README.rst
+++ b/README.rst
@@ -158,6 +158,17 @@ configuration file will always be a "full" configuration file, even if
 If you use ``--sync-deps`` to generate incremental build information, you can
 include ``deps/auto.conf`` instead, which is also a full configuration file.
 
+Useful helper macros
+~~~~~~~~~~~~~~~~~~~~
+
+The `include/linux/kconfig.h
+<https://github.com/torvalds/linux/blob/master/include/linux/kconfig.h>`_
+header in the Linux kernel defines some useful helper macros for testing
+Kconfig configuration values.
+
+``IS_ENABLED()`` is generally useful, allowing configuration values to be
+tested in ``if`` statements with no runtime overhead.
+
 Library documentation
 ---------------------
 
-- 
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