doc: generate PDF version of Doxygen output

Change-Id: Id21c369a7c6a6e73894b8458dfefd3c8c411211e
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>

autobuild.sh

@@ -67,8 +67,14 @@ fi
 timing_enter doxygen
 if hash doxygen; then
 	(cd "$rootdir"/doc; $MAKE $MAKEFLAGS) &> "$out"/doxygen.log
+	if hash pdflatex; then
+		(cd "$rootdir"/doc/output/latex && $MAKE $MAKEFLAGS) &>> "$out"/doxygen.log
+	fi
 	mkdir -p "$out"/doc
 	mv "$rootdir"/doc/output/html "$out"/doc
+	if [ -f "$rootdir"/doc/output/latex/refman.pdf ]; then
+		mv "$rootdir"/doc/output/latex/refman.pdf "$out"/doc.pdf
+	fi
 	rm -rf "$rootdir"/doc/output
 fi
 timing_exit doxygen

doc/Doxyfile

@@ -1610,7 +1610,7 @@ EXTRA_SEARCH_MAPPINGS  =
 # If the GENERATE_LATEX tag is set to YES, doxygen will generate LaTeX output.
 # The default value is: YES.
 
-GENERATE_LATEX         = NO
+GENERATE_LATEX         = YES
 
 # The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put. If a
 # relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
@@ -1653,7 +1653,7 @@ COMPACT_LATEX          = NO
 # The default value is: a4.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
-PAPER_TYPE             = a4
+PAPER_TYPE             = letter
 
 # The EXTRA_PACKAGES tag can be used to specify one or more LaTeX package names
 # that should be included in the LaTeX output. The package can be specified just
@@ -1737,7 +1737,7 @@ USE_PDFLATEX           = YES
 # The default value is: NO.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
-LATEX_BATCHMODE        = NO
+LATEX_BATCHMODE        = YES
 
 # If the LATEX_HIDE_INDICES tag is set to YES then doxygen will not include the
 # index chapters (such as File Index, Compound Index, etc.) in the output.