I give up trying to keep the pdf doc buildable with the moving
doxygen+latex combination. See Bug#921301.

---
 doc/doxygen/Makefile.am |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

--- a/doc/doxygen/Makefile.am
+++ b/doc/doxygen/Makefile.am
@@ -32,9 +32,8 @@ txtdir   = $(docdir)/manual
 EXTRA_DIST = 
 
 if BUILD_DOC
-all: $(DOX_HTML_DIR) $(DOX_PDF)
-EXTRA_DIST += $(DOX_HTML_DIR) $(DOX_PDF)
-txt_DATA = $(DOX_PDF)
+all: $(DOX_HTML_DIR)
+EXTRA_DIST += $(DOX_HTML_DIR)
 DOX_HTML_SRCDIR=$(DOX_HTML_DIR)
 install-exec-hook:
 	$(MKDIR_P) $(DESTDIR)$(docdir)/manual/html
@@ -286,6 +285,8 @@ $(DOX_TAG): $(dox_inputs)
 	@$(SED) -i '/\\begin{titlepage}/,$$d' $(DOX_LATEX_DIR)/refman.tex
 	@cat $(top_srcdir)/doc/doxygen/refman.tex >> $(DOX_LATEX_DIR)/refman.tex
 
+$(DOX_HTML_DIR): $(DOX_TAG)
+
 $(DOX_PDF): $(DOX_TAG) refman.tex
 	@cp $(top_srcdir)/doc/doxygen/chapters/version.sty $(DOX_LATEX_DIR)
 	@cp $(top_srcdir)/doc/doxygen/chapters/images/*pdf $(DOX_LATEX_DIR)
