aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/DocBook/Makefile
blob: 08687e45e19dcf7f68f84a70901a1abc4a95d829 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
###
# This makefile is used to generate the kernel documentation,
# primarily based on in-line comments in various source files.
# See Documentation/kernel-doc-nano-HOWTO.txt for instruction in how
# to document the SRC - and how to read it.
# To add a new book the only step required is to add the book to the
# list of DOCBOOKS.

DOCBOOKS := wanbook.xml z8530book.xml mcabook.xml videobook.xml \
	    kernel-hacking.xml kernel-locking.xml deviceiobook.xml \
	    procfs-guide.xml writing_usb_driver.xml \
	    kernel-api.xml filesystems.xml lsm.xml usb.xml \
	    gadget.xml libata.xml mtdnand.xml librs.xml rapidio.xml \
	    genericirq.xml

###
# The build process is as follows (targets):
#              (xmldocs) [by docproc]
# file.tmpl --> file.xml +--> file.ps   (psdocs)   [by db2ps or xmlto]
#                        +--> file.pdf  (pdfdocs)  [by db2pdf or xmlto]
#                        +--> DIR=file  (htmldocs) [by xmlto]
#                        +--> man/      (mandocs)  [by xmlto]


# for PDF and PS output you can choose between xmlto and docbook-utils tools
PDF_METHOD	= $(prefer-db2x)
PS_METHOD	= $(prefer-db2x)


###
# The targets that may be used.
PHONY += xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs

BOOKS := $(addprefix $(obj)/,$(DOCBOOKS))
xmldocs: $(BOOKS)
sgmldocs: xmldocs

PS := $(patsubst %.xml, %.ps, $(BOOKS))
psdocs: $(PS)

PDF := $(patsubst %.xml, %.pdf, $(BOOKS))
pdfdocs: $(PDF)

HTML := $(sort $(patsubst %.xml, %.html, $(BOOKS)))
htmldocs: $(HTML)
	$(call build_main_index)

MAN := $(patsubst %.xml, %.9, $(BOOKS))
mandocs: $(MAN)

installmandocs: mandocs
	mkdir -p /usr/local/man/man9/
	install Documentation/DocBook/man/*.9.gz /usr/local/man/man9/

###
#External programs used
KERNELDOC = $(srctree)/scripts/kernel-doc
DOCPROC   = $(objtree)/scripts/basic/docproc

XMLTOFLAGS = -m $(srctree)/Documentation/DocBook/stylesheet.xsl
#XMLTOFLAGS += --skip-validation

###
# DOCPROC is used for two purposes:
# 1) To generate a dependency list for a .tmpl file
# 2) To preprocess a .tmpl file and call kernel-doc with
#     appropriate parameters.
# The following rules are used to generate the .xml documentation
# required to generate the final targets. (ps, pdf, html).
quiet_cmd_docproc = DOCPROC $@
      cmd_docproc = SRCTREE=$(srctree)/ $(DOCPROC) doc $< >$@
define rule_docproc
	set -e;								\
        $(if $($(quiet)cmd_$(1)),echo '  $($(quiet)cmd_$(1))';) 	\
        $(cmd_$(1)); 							\
        ( 								\
          echo 'cmd_$@ := $(cmd_$(1))'; 				\
          echo $@: `SRCTREE=$(srctree) $(DOCPROC) depend $<`; 		\
        ) > $(dir $@).$(notdir $@).cmd
endef

%.xml: %.tmpl FORCE
	$(call if_changed_rule,docproc)

###
#Read in all saved dependency files 
cmd_files := $(wildcard $(foreach f,$(BOOKS),$(dir $(f)).$(notdir $(f)).cmd))

ifneq ($(cmd_files),)
  include $(cmd_files)
endif

###
# Changes in kernel-doc force a rebuild of all documentation
$(BOOKS): $(KERNELDOC)

###
# procfs guide uses a .c file as example code.
# This requires an explicit dependency
C-procfs-example = procfs_example.xml
C-procfs-example2 = $(addprefix $(obj)/,$(C-procfs-example))
$(obj)/procfs-guide.xml: $(C-procfs-example2)

notfoundtemplate = echo "*** You have to install docbook-utils or xmlto ***"; \
		   exit 1
db2xtemplate = db2TYPE -o $(dir $@) $<
xmltotemplate = xmlto TYPE $(XMLTOFLAGS) -o $(dir $@) $<

# determine which methods are available
ifeq ($(shell which db2ps >/dev/null 2>&1 && echo found),found)
	use-db2x = db2x
	prefer-db2x = db2x
else
	use-db2x = notfound
	prefer-db2x = $(use-xmlto)
endif
ifeq ($(shell which xmlto >/dev/null 2>&1 && echo found),found)
	use-xmlto = xmlto
	prefer-xmlto = xmlto
else
	use-xmlto = notfound
	prefer-xmlto = $(use-db2x)
endif

# the commands, generated from the chosen template
quiet_cmd_db2ps = PS      $@
      cmd_db2ps = $(subst TYPE,ps, $($(PS_METHOD)template))
%.ps : %.xml
	$(call cmd,db2ps)

quiet_cmd_db2pdf = PDF      $@
      cmd_db2pdf = $(subst TYPE,pdf, $($(PDF_METHOD)template))
%.pdf : %.xml
	$(call cmd,db2pdf)


main_idx = Documentation/DocBook/index.html
build_main_index = rm -rf $(main_idx) && \
		   echo '<h1>Linux Kernel HTML Documentation</h1>' >> $(main_idx) && \
		   echo '<h2>Kernel Version: $(KERNELVERSION)</h2>' >> $(main_idx) && \
		   cat $(HTML) >> $(main_idx)

quiet_cmd_db2html = HTML   $@
      cmd_db2html = xmlto xhtml $(XMLTOFLAGS) -o $(patsubst %.html,%,$@) $< && \
		echo '<a HREF="$(patsubst %.html,%,$(notdir $@))/index.html"> \
        $(patsubst %.html,%,$(notdir $@))</a><p>' > $@

%.html:	%.xml
	@(which xmlto > /dev/null 2>&1) || \
	 (echo "*** You need to install xmlto ***"; \
	  exit 1)
	@rm -rf $@ $(patsubst %.html,%,$@)
	$(call cmd,db2html)
	@if [ ! -z "$(PNG-$(basename $(notdir $@)))" ]; then \
            cp $(PNG-$(basename $(notdir $@))) $(patsubst %.html,%,$@); fi

quiet_cmd_db2man = MAN     $@
      cmd_db2man = if grep -q refentry $<; then xmlto man $(XMLTOFLAGS) -o $(obj)/man $< ; gzip -f $(obj)/man/*.9; fi
%.9 : %.xml
	@(which xmlto > /dev/null 2>&1) || \
	 (echo "*** You need to install xmlto ***"; \
	  exit 1)
	$(Q)mkdir -p $(obj)/man
	$(call cmd,db2man)
	@touch $@

###
# Rules to generate postscripts and PNG imgages from .fig format files
quiet_cmd_fig2eps = FIG2EPS $@
      cmd_fig2eps = fig2dev -Leps $< $@

%.eps: %.fig
	@(which fig2dev > /dev/null 2>&1) || \
	 (echo "*** You need to install transfig ***"; \
	  exit 1)
	$(call cmd,fig2eps)

quiet_cmd_fig2png = FIG2PNG $@
      cmd_fig2png = fig2dev -Lpng $< $@

%.png: %.fig
	@(which fig2dev > /dev/null 2>&1) || \
	 (echo "*** You need to install transfig ***"; \
	  exit 1)
	$(call cmd,fig2png)

###
# Rule to convert a .c file to inline XML documentation
%.xml: %.c
	@echo '  GEN     $@'
	@(                            \
	   echo "<programlisting>";   \
	   expand --tabs=8 < $< |     \
	   sed -e "s/&/\\&amp;/g"     \
	       -e "s/</\\&lt;/g"      \
	       -e "s/>/\\&gt;/g";     \
	   echo "</programlisting>")  > $@

###
# Help targets as used by the top-level makefile
dochelp:
	@echo  ' Linux kernel internal documentation in different formats:'
	@echo  '  htmldocs        - HTML'
	@echo  '  installmandocs  - install man pages generated by mandocs'
	@echo  '  mandocs         - man pages'
	@echo  '  pdfdocs         - PDF'
	@echo  '  psdocs          - Postscript'
	@echo  '  xmldocs         - XML DocBook'

###
# Temporary files left by various tools
clean-files := $(DOCBOOKS) \
	$(patsubst %.xml, %.dvi,  $(DOCBOOKS)) \
	$(patsubst %.xml, %.aux,  $(DOCBOOKS)) \
	$(patsubst %.xml, %.tex,  $(DOCBOOKS)) \
	$(patsubst %.xml, %.log,  $(DOCBOOKS)) \
	$(patsubst %.xml, %.out,  $(DOCBOOKS)) \
	$(patsubst %.xml, %.ps,   $(DOCBOOKS)) \
	$(patsubst %.xml, %.pdf,  $(DOCBOOKS)) \
	$(patsubst %.xml, %.html, $(DOCBOOKS)) \
	$(patsubst %.xml, %.9,    $(DOCBOOKS)) \
	$(C-procfs-example)

clean-dirs := $(patsubst %.xml,%,$(DOCBOOKS)) man

# Declare the contents of the .PHONY variable as phony.  We keep that
# information in a variable se we can use it in if_changed and friends.

.PHONY: $(PHONY)