build+docs: align minimum requirements with ndn-cxx/NFD
* Recommend boost >= 1.65.1 and gcc >= 7.4.0
* Require clang >= 4.0, or Xcode >= 9.0 on macOS
* Silence an ABI-related diagnostic message from gcc on armv7
* Update waf to version 2.0.21
* Make graphviz optional for building documentation
* Sync sphinx configuration
Change-Id: Ib271da841cd12e7595ae83d75bd0fc681f8c231f
diff --git a/docs/conf.py b/docs/conf.py
index 050d44c..526b37f 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -1,10 +1,8 @@
-# -*- coding: utf-8 -*-
-#
# Configuration file for the Sphinx documentation builder.
#
# This file only contains a selection of the most common options. For a full
# list see the documentation:
-# http://www.sphinx-doc.org/en/master/config
+# https://www.sphinx-doc.org/en/master/usage/configuration.html
# -- Path setup --------------------------------------------------------------
@@ -20,13 +18,13 @@
# -- Project information -----------------------------------------------------
project = u'Named Data Link State Routing Protocol (NLSR)'
-copyright = u'Copyright © 2014-2020 Named Data Networking Project.'
+copyright = u'Copyright © 2014-2021 Named Data Networking Project.'
author = u'Named Data Networking Project'
-# The short X.Y version
+# The short X.Y version.
#version = ''
-# The full version, including alpha/beta/rc tags
+# The full version, including alpha/beta/rc tags.
#release = ''
# There are two options for replacing |today|: either, you set today to some
@@ -40,7 +38,7 @@
# If your documentation needs a minimal Sphinx version, state it here.
#
-needs_sphinx = '1.1'
+needs_sphinx = '1.3'
# Add any Sphinx extension module names here, as strings. They can be
# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
@@ -87,6 +85,12 @@
# so a file named "default.css" will overwrite the builtin "default.css".
html_static_path = ['_static']
+html_copy_source = False
+html_show_sourcelink = False
+
+# Disable syntax highlighting of code blocks by default.
+highlight_language = 'none'
+
# -- Options for LaTeX output ------------------------------------------------