From 8bc74683de1c744aed19a5822a9f91dddcc7918b Mon Sep 17 00:00:00 2001
From: Thomas Monjalon <thomas@monjalon.net>
Date: Wed, 19 Apr 2017 14:00:29 +0200
Subject: [PATCH] doc: fix sphinx warning

Seen with recent version of sphinx:
WARNING: latex_preamble conflicts with latex_elements['preamble'], ignored.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Tested-by: Ferruh Yigit <ferruh.yigit@intel.com>
---
 doc/guides/conf.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/doc/guides/conf.py b/doc/guides/conf.py
index 01ce16d2e9..ef0e1c607a 100644
--- a/doc/guides/conf.py
+++ b/doc/guides/conf.py
@@ -79,7 +79,7 @@ latex_documents = [
 ]
 
 # Latex directives to be included directly in the latex/pdf docs.
-latex_preamble = r"""
+custom_latex_preamble = r"""
 \usepackage[utf8]{inputenc}
 \usepackage[T1]{fontenc}
 \usepackage{helvet}
@@ -95,7 +95,7 @@ latex_elements = {
     'classoptions': ',openany,oneside',
     'babel': '\\usepackage[english]{babel}',
     # customize Latex formatting
-    'preamble': latex_preamble
+    'preamble': custom_latex_preamble
 }
 
 
-- 
2.20.1