doc: specify that xelatex is used as Latex engine

Building the pdf documentation on readthedocs.org fails with pdflatex.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

diff --git a/doc/conf.py b/doc/conf.py
index 8bb27ad9e2567753ca1d404e9f8fff4bc8ee374b..93250a6aeed4a2997661f74d339b175d22f515d6 100644 (file)
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -31,6 +31,8 @@ from load_config import loadConfig
 # If your documentation needs a minimal Sphinx version, state it here.
 needs_sphinx = '1.3'
 
+latex_engine = 'xelatex'
+
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.