From f594975b499216ac02c470b4cf5d4bc695fae693 Mon Sep 17 00:00:00 2001
From: Ulf Magnusson <ulfalizer@gmail.com>
Date: Sat, 6 Oct 2018 06:12:53 +0200
Subject: Add hints on incremental building to 'getting started'

---
 README.rst | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'README.rst')

diff --git a/README.rst b/README.rst
index 173cd84..746d609 100644
--- a/README.rst
+++ b/README.rst
@@ -169,6 +169,17 @@ Kconfig configuration values.
 ``IS_ENABLED()`` is generally useful, allowing configuration values to be
 tested in ``if`` statements with no runtime overhead.
 
+Incremental building
+~~~~~~~~~~~~~~~~~~~~
+
+See the docstring for ``Kconfig.sync_deps()`` in `kconfiglib.py
+<https://github.com/ulfalizer/Kconfiglib/blob/master/kconfiglib.py>`_ for hints
+on implementing incremental builds (rebuilding just source files that reference
+on changed configuration values).
+
+Running the ``scripts/basic/fixdep.c`` tool from the kernel on the output of
+``gcc -MD <source file>`` might give you an idea of how it all fits together.
+
 Library documentation
 ---------------------
 
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