Build pdf doc

The is one of community goals that each project could produce a
single PDF file. The pdf should be in the output of openstack-tox-docs
job.

TeX packages are required to build PDF locally, following is recommended:

* inkscape
* texlive-latex-base
* texlive-latex-extra
* texlive-fonts-recommended

More about the goal:
https://governance.openstack.org/tc/goals/train/pdf-doc-generation.html
https://etherpad.openstack.org/p/train-pdf-support-goal
https://etherpad.openstack.org/p/pdf-goal-train-common-problems

Change-Id: Id2244fa8c70e8b8c09e309998012041883b98ab1
(cherry picked from commit 386d5df557)

doc/requirements.txt

@@ -5,4 +5,5 @@ reno>=2.5.0 # Apache-2.0
 sphinx!=1.6.6,!=1.6.7,>=1.6.2,<2.0.0;python_version=='2.7'  # BSD
 sphinx!=1.6.6,!=1.6.7,>=1.6.2;python_version>='3.4'  # BSD
 sphinxcontrib-apidoc>=0.2.0  # BSD
-openstackdocstheme>=1.18.1 # Apache-2.0
+sphinxcontrib-svg2pdfconverter>=0.1.0 # BSD
+openstackdocstheme>=1.20.0 # Apache-2.0

doc/source/conf.py

@@ -21,14 +21,10 @@ sys.path.insert(0, os.path.abspath('../..'))
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
 extensions = [
     'sphinxcontrib.apidoc',
+    'sphinxcontrib.rsvgconverter',
+    'openstackdocstheme',
 ]
 
-try:
-    import openstackdocstheme
-    extensions.append('openstackdocstheme')
-except ImportError:
-    openstackdocstheme = None
-
 autoclass_content = 'both'
 apidoc_module_dir = '../../metalsmith'
 apidoc_output_dir = 'reference/api'
@@ -46,7 +42,6 @@ source_suffix = '.rst'
 master_doc = 'index'
 
 # General information about the project.
-project = u'metalsmith'
 copyright = u'2018, MetalSmith Developers '
 
 # The version info for the project you're documenting, acts as replacement for
@@ -77,21 +72,20 @@ pygments_style = 'sphinx'
 # html_theme = '_theme'
 # html_static_path = ['static']
 
-if openstackdocstheme is not None:
-    html_theme = 'openstackdocs'
-else:
-    html_theme = 'default'
+html_theme = 'openstackdocs'
 
 # Output file base name for HTML help builder.
-htmlhelp_basename = '%sdoc' % project
+htmlhelp_basename = 'metalsmithdoc'
+
+latex_use_xindy = False
 
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title, author, documentclass
 # [howto/manual]).
 latex_documents = [
     ('index',
-     '%s.tex' % project,
-     u'%s Documentation' % project,
+     'doc-metalsmith.tex',
+     u'MetalSmith Documentation',
      u'MetalSmith Developers', 'manual'),
 ]
 

tox.ini

@@ -54,6 +54,14 @@ deps =
 commands =
   sphinx-build -a -E -W -b html doc/source doc/build/html
 
+[testenv:pdf-docs]
+basepython = python3
+whitelist_externals = make
+deps = {[testenv:docs]deps}
+commands =
+  sphinx-build -W -b latex doc/source doc/build/pdf
+  make -C doc/build/pdf
+
 [testenv:releasenotes]
 basepython = python3
 deps =