From 97c07f67cf48c431024765aa9d6054171cfb243f Mon Sep 17 00:00:00 2001
From: loikki <loic.hausammann@protonmail.ch>
Date: Mon, 8 Oct 2018 10:35:07 +0200
Subject: [PATCH] Update grackle doc

---
 doc/RTD/source/Cooling/index.rst | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/doc/RTD/source/Cooling/index.rst b/doc/RTD/source/Cooling/index.rst
index 46a01b2a05..585a5bd0e3 100644
--- a/doc/RTD/source/Cooling/index.rst
+++ b/doc/RTD/source/Cooling/index.rst
@@ -45,6 +45,9 @@ to provide an HDF5 table computed by Cloudy.
 When starting a simulation without providing the different fractions, the code
 supposes an equilibrium and computes the fractions automatically.
 
+In order to compile SWIFT with Grackle, you need to provide the options ``with-grackle``
+and ``with-chemistry``.
+
 Eagle
 ~~~~~
 
-- 
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