+################################################################################
+#
+# DocBook XML Documentation
+#
+################################################################################
+
+.PHONY: html html-no-chunks htmlhelp fo dvi ps pdf
+
+ifneq "$(XML_DOC)" ""
+
+all :: $(XMLDocWays)
+
+# multi-file XML document: main document name is specified in $(XML_DOC),
+# sub-documents (.xml files) listed in $(XML_SRCS).
+
+ifeq "$(XML_SRCS)" ""
+XML_SRCS = $(wildcard *.xml)
+endif
+
+XML_HTML = $(addsuffix -html/index.html,$(basename $(XML_DOC)))
+XML_HTML_NO_CHUNKS = $(addsuffix .html,$(XML_DOC))
+XML_HTMLHELP = $(addsuffix -htmlhelp/index.html,$(basename $(XML_DOC)))
+XML_FO = $(addsuffix .fo,$(XML_DOC))
+XML_DVI = $(addsuffix .dvi,$(XML_DOC))
+XML_PS = $(addsuffix .ps,$(XML_DOC))
+XML_PDF = $(addsuffix .pdf,$(XML_DOC))
+
+$(XML_HTML) $(XML_NO_CHUNKS_HTML) $(XML_FO) $(XML_DVI) $(XML_PS) $(XML_PDF) :: $(XML_SRCS)
+
+html :: $(XML_HTML)
+html-no-chunks :: $(XML_HTML_NO_CHUNKS)
+htmlhelp :: $(XML_HTMLHELP)
+fo :: $(XML_FO)
+dvi :: $(XML_DVI)
+ps :: $(XML_PS)
+pdf :: $(XML_PDF)
+
+CLEAN_FILES += $(XML_HTML_NO_CHUNKS) $(XML_FO) $(XML_DVI) $(XML_PS) $(XML_PDF)
+
+extraclean ::
+ $(RM) -rf $(XML_DOC).out $(notdir $(FPTOOLS_CSS)) $(addsuffix -html,$(basename $(XML_DOC))) $(addsuffix -htmlhelp,$(basename $(XML_DOC)))
+
+validate ::
+ $(XMLLINT) --valid --noout $(XMLLINT_OPTS) $(XML_DOC).xml
+endif
+