bindings: Fix doc extraction for enums

The source file enum.hpp was not found when not building in the source
tree.  Also, extraction of the brief description did not work correctly
when there was additional XML markup inside the <para> element.

bindings/cxx/Doxyfile

@@ -744,7 +744,7 @@ WARN_LOGFILE           =
 # Note: If this tag is empty the current directory is searched.
 
 INPUT                  = include/libsigrokcxx/libsigrokcxx.hpp \
-                         include/libsigrokcxx/enums.hpp
+                         $(BUILDDIR)include/libsigrokcxx/enums.hpp
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses

bindings/swig/doc.py

@@ -30,7 +30,7 @@ index = ElementTree.parse(input_file)
 
 def get_text(node):
     paras = node.findall('para')
-    return str.join('\n\n', [p.text.rstrip() for p in paras if p.text])
+    return str.join('\n\n', [("".join(l)).rstrip() for l in [list(p.itertext()) for p in paras] if l])
 
 for compound in index.findall('compound'):
     if compound.attrib['kind'] != 'class':