2 # This makefile is used to generate the kernel documentation,
3 # primarily based on in-line comments in various source files.
4 # See Documentation/kernel-doc-nano-HOWTO.txt for instruction in how
5 # to document the SRC - and how to read it.
6 # To add a new book the only step required is to add the book to the
9 DOCBOOKS := wanbook.xml z8530book.xml mcabook.xml videobook.xml \
10 kernel-hacking.xml kernel-locking.xml deviceiobook.xml \
11 procfs-guide.xml writing_usb_driver.xml \
12 kernel-api.xml filesystems.xml lsm.xml usb.xml \
13 gadget.xml libata.xml mtdnand.xml librs.xml rapidio.xml \
17 # The build process is as follows (targets):
18 # (xmldocs) [by docproc]
19 # file.tmpl --> file.xml +--> file.ps (psdocs) [by db2ps or xmlto]
20 # +--> file.pdf (pdfdocs) [by db2pdf or xmlto]
21 # +--> DIR=file (htmldocs) [by xmlto]
22 # +--> man/ (mandocs) [by xmlto]
25 # for PDF and PS output you can choose between xmlto and docbook-utils tools
26 PDF_METHOD = $(prefer-db2x)
27 PS_METHOD = $(prefer-db2x)
31 # The targets that may be used.
32 PHONY += xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs
34 BOOKS := $(addprefix $(obj)/,$(DOCBOOKS))
38 PS := $(patsubst %.xml, %.ps, $(BOOKS))
41 PDF := $(patsubst %.xml, %.pdf, $(BOOKS))
44 HTML := $(sort $(patsubst %.xml, %.html, $(BOOKS)))
46 $(call build_main_index)
48 MAN := $(patsubst %.xml, %.9, $(BOOKS))
51 installmandocs: mandocs
52 mkdir -p /usr/local/man/man9/
53 install Documentation/DocBook/man/*.9.gz /usr/local/man/man9/
56 #External programs used
57 KERNELDOC = $(srctree)/scripts/kernel-doc
58 DOCPROC = $(objtree)/scripts/basic/docproc
60 XMLTOFLAGS = -m $(srctree)/Documentation/DocBook/stylesheet.xsl
61 #XMLTOFLAGS += --skip-validation
64 # DOCPROC is used for two purposes:
65 # 1) To generate a dependency list for a .tmpl file
66 # 2) To preprocess a .tmpl file and call kernel-doc with
67 # appropriate parameters.
68 # The following rules are used to generate the .xml documentation
69 # required to generate the final targets. (ps, pdf, html).
70 quiet_cmd_docproc = DOCPROC $@
71 cmd_docproc = SRCTREE=$(srctree)/ $(DOCPROC) doc $< >$@
74 $(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))';) \
77 echo 'cmd_$@ := $(cmd_$(1))'; \
78 echo $@: `SRCTREE=$(srctree) $(DOCPROC) depend $<`; \
79 ) > $(dir $@).$(notdir $@).cmd
83 $(call if_changed_rule,docproc)
86 #Read in all saved dependency files
87 cmd_files := $(wildcard $(foreach f,$(BOOKS),$(dir $(f)).$(notdir $(f)).cmd))
94 # Changes in kernel-doc force a rebuild of all documentation
95 $(BOOKS): $(KERNELDOC)
98 # procfs guide uses a .c file as example code.
99 # This requires an explicit dependency
100 C-procfs-example = procfs_example.xml
101 C-procfs-example2 = $(addprefix $(obj)/,$(C-procfs-example))
102 $(obj)/procfs-guide.xml: $(C-procfs-example2)
104 notfoundtemplate = echo "*** You have to install docbook-utils or xmlto ***"; \
106 db2xtemplate = db2TYPE -o $(dir $@) $<
107 xmltotemplate = xmlto TYPE $(XMLTOFLAGS) -o $(dir $@) $<
109 # determine which methods are available
110 ifeq ($(shell which db2ps >/dev/null 2>&1 && echo found),found)
115 prefer-db2x = $(use-xmlto)
117 ifeq ($(shell which xmlto >/dev/null 2>&1 && echo found),found)
122 prefer-xmlto = $(use-db2x)
125 # the commands, generated from the chosen template
126 quiet_cmd_db2ps = PS $@
127 cmd_db2ps = $(subst TYPE,ps, $($(PS_METHOD)template))
131 quiet_cmd_db2pdf = PDF $@
132 cmd_db2pdf = $(subst TYPE,pdf, $($(PDF_METHOD)template))
137 main_idx = Documentation/DocBook/index.html
138 build_main_index = rm -rf $(main_idx) && \
139 echo '<h1>Linux Kernel HTML Documentation</h1>' >> $(main_idx) && \
140 echo '<h2>Kernel Version: $(KERNELVERSION)</h2>' >> $(main_idx) && \
141 cat $(HTML) >> $(main_idx)
143 quiet_cmd_db2html = HTML $@
144 cmd_db2html = xmlto xhtml $(XMLTOFLAGS) -o $(patsubst %.html,%,$@) $< && \
145 echo '<a HREF="$(patsubst %.html,%,$(notdir $@))/index.html"> \
146 $(patsubst %.html,%,$(notdir $@))</a><p>' > $@
149 @(which xmlto > /dev/null 2>&1) || \
150 (echo "*** You need to install xmlto ***"; \
152 @rm -rf $@ $(patsubst %.html,%,$@)
154 @if [ ! -z "$(PNG-$(basename $(notdir $@)))" ]; then \
155 cp $(PNG-$(basename $(notdir $@))) $(patsubst %.html,%,$@); fi
157 quiet_cmd_db2man = MAN $@
158 cmd_db2man = if grep -q refentry $<; then xmlto man $(XMLTOFLAGS) -o $(obj)/man $< ; gzip -f $(obj)/man/*.9; fi
160 @(which xmlto > /dev/null 2>&1) || \
161 (echo "*** You need to install xmlto ***"; \
163 $(Q)mkdir -p $(obj)/man
168 # Rules to generate postscripts and PNG imgages from .fig format files
169 quiet_cmd_fig2eps = FIG2EPS $@
170 cmd_fig2eps = fig2dev -Leps $< $@
173 @(which fig2dev > /dev/null 2>&1) || \
174 (echo "*** You need to install transfig ***"; \
178 quiet_cmd_fig2png = FIG2PNG $@
179 cmd_fig2png = fig2dev -Lpng $< $@
182 @(which fig2dev > /dev/null 2>&1) || \
183 (echo "*** You need to install transfig ***"; \
188 # Rule to convert a .c file to inline XML documentation
192 echo "<programlisting>"; \
193 expand --tabs=8 < $< | \
194 sed -e "s/&/\\&/g" \
197 echo "</programlisting>") > $@
200 # Help targets as used by the top-level makefile
202 @echo ' Linux kernel internal documentation in different formats:'
203 @echo ' htmldocs - HTML'
204 @echo ' installmandocs - install man pages generated by mandocs'
205 @echo ' mandocs - man pages'
206 @echo ' pdfdocs - PDF'
207 @echo ' psdocs - Postscript'
208 @echo ' xmldocs - XML DocBook'
211 # Temporary files left by various tools
212 clean-files := $(DOCBOOKS) \
213 $(patsubst %.xml, %.dvi, $(DOCBOOKS)) \
214 $(patsubst %.xml, %.aux, $(DOCBOOKS)) \
215 $(patsubst %.xml, %.tex, $(DOCBOOKS)) \
216 $(patsubst %.xml, %.log, $(DOCBOOKS)) \
217 $(patsubst %.xml, %.out, $(DOCBOOKS)) \
218 $(patsubst %.xml, %.ps, $(DOCBOOKS)) \
219 $(patsubst %.xml, %.pdf, $(DOCBOOKS)) \
220 $(patsubst %.xml, %.html, $(DOCBOOKS)) \
221 $(patsubst %.xml, %.9, $(DOCBOOKS)) \
224 clean-dirs := $(patsubst %.xml,%,$(DOCBOOKS)) man
226 # Declare the contents of the .PHONY variable as phony. We keep that
227 # information in a variable se we can use it in if_changed and friends.