[Doc] Correct bugs in compiling latexpdf

docs/requirements.txt

@@ -11,10 +11,6 @@ sphinxcontrib-bibtex<2.0.0
 # Package required to embed youtube video
 sphinxcontrib-yt
 
-# Package required to convert svg for pdf builder
-sphinxcontrib-svg2pdfconverter[CairoSVG]
-#sphinx-ext-imgconverter
-
 #Work-around bug "AttributeError: 'Values' object has no attribute 'character_level_inline_markup'" with docutils 0.13.1
 #See:
 #  * https://github.com/sphinx-doc/sphinx/issues/3951

docs/source/conf.py

@@ -23,29 +23,12 @@ import sphinx_rtd_theme
 #html_theme = "sphinx_rtd_theme"
 #html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
 
-# Import sphinxcontrib.bibtex
-have_sphinxcontrib_bibtex = True
-try:
-    import sphinxcontrib.bibtex
-except ImportError:
-    have_sphinxcontrib_bibtex = False
-
-# Import sphinxcontrib.yt
-have_sphinxcontrib_youtube = True
-try:
-    import sphinxcontrib.yt
-except ImportError:
-    have_sphinxcontrib_youtube = False
-
-# Import sphinxcontrib.svg2pdfconverter
-have_sphinxcontrib_svg2pdfconverter = True
-have_sphinx_ext_imgconverter = True
-try:
-    import sphinxcontrib.svg2pdfconverter
-    import sphinx.ext.imgconverter
-except ImportError:
-    have_sphinxcontrib_svg2pdfconverter = False
-    have_sphinx_ext_imgconverter = False
+# For bibtex support
+import sphinxcontrib.bibtex
+# For embedded youtube
+import sphinxcontrib.yt
+# For converting SVG to PNG
+import sphinx.ext.imgconverter
 
 # -- Project information -----------------------------------------------------
 
@@ -75,8 +58,7 @@ extensions = [
     'sphinxcontrib.bibtex',
     'sphinx.ext.autosectionlabel',
     'sphinxcontrib.yt',
-    'sphinxcontrib.cairosvgconverter',
-#    'sphinx.ext.imgconverter',
+    'sphinx.ext.imgconverter',
 ]
 
 # Add any paths that contain templates here, relative to this directory.
@@ -170,8 +152,6 @@ latex_elements = {
     # Latex figure (float) alignment
     #
     # 'figure_align': 'htbp',
-    'preamble': '\\usepackage{tikz}',
-    'preamble': '\\usepackage{svg}',
 }
 
 # Grouping the document tree into LaTeX files. List of tuples

docs/source/manual/arch_lang/circuit_model_examples.rst

@@ -1160,7 +1160,7 @@ Template
 
 .. option:: <wire_param model_type="<string>" R="<float>" C="<float>" num_level="<int>"/>
 
-  - ``model_type="pi|T"`` Specify the type of RC models for this wire segement. Currently, OpenFPGA supports the π-type and T-type multi-level RC models.
+  - ``model_type="pi|T"`` Specify the type of RC models for this wire segement. Currently, OpenFPGA supports the :math:`\pi`-type and T-type multi-level RC models.
   - ``R="<float>"`` Specify the total resistance of the wire
   - ``C="<float>"`` Specify the total capacitance of the wire.
   - ``num_level="<int>"`` Specify the number of levels of the RC wire model.
@@ -1193,7 +1193,7 @@ The code describing this wire is:
 
 This example shows
   - A routing track wire has 1 input and output 
-  - The routing wire will be modelled as a 1-level π-type RC wire model with a total resistance of :math:`103.84\Omega` and a total capacitance of :math:`13.89fF`
+  - The routing wire will be modelled as a 1-level :math:`\pi`-type RC wire model with a total resistance of :math:`103.84\Omega` and a total capacitance of :math:`13.89fF`
 
 I/O pads
 ~~~~~~~~