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 := z8530book.xml mcabook.xml device-drivers.xml \
10 kernel-hacking.xml kernel-locking.xml deviceiobook.xml \
11 procfs-guide.xml writing_usb_driver.xml networking.xml \
12 kernel-api.xml filesystems.xml lsm.xml usb.xml kgdb.xml \
13 gadget.xml libata.xml mtdnand.xml librs.xml rapidio.xml \
14 genericirq.xml s390-drivers.xml uio-howto.xml scsi.xml \
15 mac80211.xml debugobjects.xml sh.xml regulator.xml \
16 alsa-driver-api.xml writing-an-alsa-driver.xml
19 # The build process is as follows (targets):
20 # (xmldocs) [by docproc]
21 # file.tmpl --> file.xml +--> file.ps (psdocs) [by db2ps or xmlto]
22 # +--> file.pdf (pdfdocs) [by db2pdf or xmlto]
23 # +--> DIR=file (htmldocs) [by xmlto]
24 # +--> man/ (mandocs) [by xmlto]
27 # for PDF and PS output you can choose between xmlto and docbook-utils tools
28 PDF_METHOD = $(prefer-db2x)
29 PS_METHOD = $(prefer-db2x)
33 # The targets that may be used.
34 PHONY += xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs cleandocs
36 BOOKS := $(addprefix $(obj)/,$(DOCBOOKS))
40 PS := $(patsubst %.xml, %.ps, $(BOOKS))
43 PDF := $(patsubst %.xml, %.pdf, $(BOOKS))
46 HTML := $(sort $(patsubst %.xml, %.html, $(BOOKS)))
48 $(call build_main_index)
50 MAN := $(patsubst %.xml, %.9, $(BOOKS))
53 installmandocs: mandocs
54 mkdir -p /usr/local/man/man9/
55 install Documentation/DocBook/man/*.9.gz /usr/local/man/man9/
58 #External programs used
59 KERNELDOC = $(srctree)/scripts/kernel-doc
60 DOCPROC = $(objtree)/scripts/basic/docproc
62 XMLTOFLAGS = -m $(srctree)/Documentation/DocBook/stylesheet.xsl
63 #XMLTOFLAGS += --skip-validation
66 # DOCPROC is used for two purposes:
67 # 1) To generate a dependency list for a .tmpl file
68 # 2) To preprocess a .tmpl file and call kernel-doc with
69 # appropriate parameters.
70 # The following rules are used to generate the .xml documentation
71 # required to generate the final targets. (ps, pdf, html).
72 quiet_cmd_docproc = DOCPROC $@
73 cmd_docproc = SRCTREE=$(srctree)/ $(DOCPROC) doc $< >$@
76 $(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))';) \
79 echo 'cmd_$@ := $(cmd_$(1))'; \
80 echo $@: `SRCTREE=$(srctree) $(DOCPROC) depend $<`; \
81 ) > $(dir $@).$(notdir $@).cmd
85 $(call if_changed_rule,docproc)
88 #Read in all saved dependency files
89 cmd_files := $(wildcard $(foreach f,$(BOOKS),$(dir $(f)).$(notdir $(f)).cmd))
96 # Changes in kernel-doc force a rebuild of all documentation
97 $(BOOKS): $(KERNELDOC)
100 # procfs guide uses a .c file as example code.
101 # This requires an explicit dependency
102 C-procfs-example = procfs_example.xml
103 C-procfs-example2 = $(addprefix $(obj)/,$(C-procfs-example))
104 $(obj)/procfs-guide.xml: $(C-procfs-example2)
106 # List of programs to build
107 ##oops, this is a kernel module::hostprogs-y := procfs_example
108 obj-m += procfs_example.o
110 # Tell kbuild to always build the programs
111 always := $(hostprogs-y)
113 notfoundtemplate = echo "*** You have to install docbook-utils or xmlto ***"; \
115 db2xtemplate = db2TYPE -o $(dir $@) $<
116 xmltotemplate = xmlto TYPE $(XMLTOFLAGS) -o $(dir $@) $<
118 # determine which methods are available
119 ifeq ($(shell which db2ps >/dev/null 2>&1 && echo found),found)
124 prefer-db2x = $(use-xmlto)
126 ifeq ($(shell which xmlto >/dev/null 2>&1 && echo found),found)
131 prefer-xmlto = $(use-db2x)
134 # the commands, generated from the chosen template
135 quiet_cmd_db2ps = PS $@
136 cmd_db2ps = $(subst TYPE,ps, $($(PS_METHOD)template))
140 quiet_cmd_db2pdf = PDF $@
141 cmd_db2pdf = $(subst TYPE,pdf, $($(PDF_METHOD)template))
147 main_idx = Documentation/DocBook/$(index)
148 build_main_index = rm -rf $(main_idx) && \
149 echo '<h1>Linux Kernel HTML Documentation</h1>' >> $(main_idx) && \
150 echo '<h2>Kernel Version: $(KERNELVERSION)</h2>' >> $(main_idx) && \
151 cat $(HTML) >> $(main_idx)
153 quiet_cmd_db2html = HTML $@
154 cmd_db2html = xmlto xhtml $(XMLTOFLAGS) -o $(patsubst %.html,%,$@) $< && \
155 echo '<a HREF="$(patsubst %.html,%,$(notdir $@))/index.html"> \
156 $(patsubst %.html,%,$(notdir $@))</a><p>' > $@
159 @(which xmlto > /dev/null 2>&1) || \
160 (echo "*** You need to install xmlto ***"; \
162 @rm -rf $@ $(patsubst %.html,%,$@)
164 @if [ ! -z "$(PNG-$(basename $(notdir $@)))" ]; then \
165 cp $(PNG-$(basename $(notdir $@))) $(patsubst %.html,%,$@); fi
167 quiet_cmd_db2man = MAN $@
168 cmd_db2man = if grep -q refentry $<; then xmlto man $(XMLTOFLAGS) -o $(obj)/man $< ; gzip -f $(obj)/man/*.9; fi
170 @(which xmlto > /dev/null 2>&1) || \
171 (echo "*** You need to install xmlto ***"; \
173 $(Q)mkdir -p $(obj)/man
178 # Rules to generate postscripts and PNG images from .fig format files
179 quiet_cmd_fig2eps = FIG2EPS $@
180 cmd_fig2eps = fig2dev -Leps $< $@
183 @(which fig2dev > /dev/null 2>&1) || \
184 (echo "*** You need to install transfig ***"; \
188 quiet_cmd_fig2png = FIG2PNG $@
189 cmd_fig2png = fig2dev -Lpng $< $@
192 @(which fig2dev > /dev/null 2>&1) || \
193 (echo "*** You need to install transfig ***"; \
198 # Rule to convert a .c file to inline XML documentation
200 quiet_gen_xml = echo ' GEN $@'
205 echo "<programlisting>"; \
206 expand --tabs=8 < $< | \
207 sed -e "s/&/\\&/g" \
210 echo "</programlisting>") > $@
213 # Help targets as used by the top-level makefile
215 @echo ' Linux kernel internal documentation in different formats:'
216 @echo ' htmldocs - HTML'
217 @echo ' pdfdocs - PDF'
218 @echo ' psdocs - Postscript'
219 @echo ' xmldocs - XML DocBook'
220 @echo ' mandocs - man pages'
221 @echo ' installmandocs - install man pages generated by mandocs'
222 @echo ' cleandocs - clean all generated DocBook files'
225 # Temporary files left by various tools
226 clean-files := $(DOCBOOKS) \
227 $(patsubst %.xml, %.dvi, $(DOCBOOKS)) \
228 $(patsubst %.xml, %.aux, $(DOCBOOKS)) \
229 $(patsubst %.xml, %.tex, $(DOCBOOKS)) \
230 $(patsubst %.xml, %.log, $(DOCBOOKS)) \
231 $(patsubst %.xml, %.out, $(DOCBOOKS)) \
232 $(patsubst %.xml, %.ps, $(DOCBOOKS)) \
233 $(patsubst %.xml, %.pdf, $(DOCBOOKS)) \
234 $(patsubst %.xml, %.html, $(DOCBOOKS)) \
235 $(patsubst %.xml, %.9, $(DOCBOOKS)) \
236 $(C-procfs-example) $(index)
238 clean-dirs := $(patsubst %.xml,%,$(DOCBOOKS)) man
241 $(Q)rm -f $(call objectify, $(clean-files))
242 $(Q)rm -rf $(call objectify, $(clean-dirs))
244 # Declare the contents of the .PHONY variable as phony. We keep that
245 # information in a variable se we can use it in if_changed and friends.