2 # This makefile is used to generate the kernel documentation,
3 # primarily based on in-line comments in various source files.
4 # See doc/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 include $(TOPDIR)/config.mk
14 # The build process is as follows (targets):
15 # (xmldocs) [by docproc]
16 # file.tmpl --> file.xml +--> file.ps (psdocs) [by db2ps or xmlto]
17 # +--> file.pdf (pdfdocs) [by db2pdf or xmlto]
18 # +--> DIR=file (htmldocs) [by xmlto]
19 # +--> man/ (mandocs) [by xmlto]
22 # for PDF and PS output you can choose between xmlto and docbook-utils tools
23 PDF_METHOD = $(prefer-db2x)
24 PS_METHOD = $(prefer-db2x)
28 # The targets that may be used.
29 PHONY += $(obj).depend xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs cleandocs
31 BOOKS := $(addprefix $(OBJTREE)/doc/DocBook/,$(DOCBOOKS))
35 PS := $(patsubst %.xml, %.ps, $(BOOKS))
38 PDF := $(patsubst %.xml, %.pdf, $(BOOKS))
41 HTML := $(sort $(patsubst %.xml, %.html, $(BOOKS)))
43 $(call build_main_index)
45 $(call install_media_images)
47 MAN := $(patsubst %.xml, %.9, $(BOOKS))
50 installmandocs: mandocs
51 mkdir -p /usr/local/man/man9/
52 install doc/DocBook/man/*.9.gz /usr/local/man/man9/
55 #External programs used
56 KERNELDOC = $(SRCTREE)/tools/kernel-doc/kernel-doc
57 DOCPROC = $(OBJTREE)/tools/kernel-doc/docproc
59 XMLTOFLAGS = -m $(SRCTREE)/doc/DocBook/stylesheet.xsl
60 XMLTOFLAGS += --skip-validation
63 # DOCPROC is used for two purposes:
64 # 1) To generate a dependency list for a .tmpl file
65 # 2) To preprocess a .tmpl file and call kernel-doc with
66 # appropriate parameters.
67 # The following rules are used to generate the .xml documentation
68 # required to generate the final targets. (ps, pdf, html).
72 ifeq ($@, "cleandocs")
73 sinclude $(obj).depend
74 $(obj).depend: $(patsubst %.xml, %.tmpl, $(DOCBOOKS))
75 rm -f $(obj).depend ; \
76 touch $(obj).depend ; \
78 xmlfile=`echo "$${file}" | \
79 sed "s/tmpl$$/xml/"` ; \
80 echo -n "$${xmlfile}: ">> $(obj).depend ; \
81 $(DOCPROC) depend $$file >> $(obj).depend ; \
82 echo -e "\n\t$(DOCPROC) doc $< >$${xmlfile} " >> \
88 # Changes in kernel-doc force a rebuild of all documentation
89 $(BOOKS): $(KERNELDOC)
91 notfoundtemplate = echo "*** You have to install docbook-utils or xmlto ***"; \
93 db2xtemplate = db2TYPE -o $(dir $@) $<
94 xmltotemplate = xmlto TYPE $(XMLTOFLAGS) -o $(dir $@) $<
96 # determine which methods are available
97 ifeq ($(shell which db2ps >/dev/null 2>&1 && echo found),found)
102 prefer-db2x = $(use-xmlto)
104 ifeq ($(shell which xmlto >/dev/null 2>&1 && echo found),found)
109 prefer-xmlto = $(use-db2x)
112 # the commands, generated from the chosen template
113 quiet_cmd_db2ps = PS $@
114 cmd_db2ps = $(subst TYPE,ps, $($(PS_METHOD)template))
118 quiet_cmd_db2pdf = PDF $@
119 cmd_db2pdf = $(subst TYPE,pdf, $($(PDF_METHOD)template))
126 build_main_index = rm -rf $(main_idx); \
127 echo '<h1>U-Boot Bootloader HTML Documentation</h1>' >> $(main_idx) && \
128 echo '<h2>U-Boot Version: $(U_BOOT_VERSION)</h2>' >> $(main_idx) && \
129 cat $(HTML) >> $(main_idx)
131 # To work around bug [1] in docbook-xsl-stylesheets 1.76.1 , generate only html
132 # docs instead of xhtml with xmlto.
133 # [1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=654338
134 quiet_cmd_db2html = HTML $@
135 cmd_db2html = xmlto html $(XMLTOFLAGS) -o $(patsubst %.html,%,$@) $< && \
136 echo '<a HREF="$(patsubst %.html,%,$(notdir $@))/index.html"> \
137 $(patsubst %.html,%,$(notdir $@))</a><p>' > $@
140 @(which xmlto > /dev/null 2>&1) || \
141 (echo "*** You need to install xmlto ***"; \
143 @rm -rf $@ $(patsubst %.html,%,$@)
145 @if [ ! -z "$(PNG-$(basename $(notdir $@)))" ]; then \
146 cp $(PNG-$(basename $(notdir $@))) $(patsubst %.html,%,$@); fi
148 quiet_cmd_db2man = MAN $@
149 cmd_db2man = if grep -q refentry $<; then xmlto man $(XMLTOFLAGS) -o $(obj)/man $< ; gzip -f $(obj)/man/*.9; fi
151 @(which xmlto > /dev/null 2>&1) || \
152 (echo "*** You need to install xmlto ***"; \
154 $(Q)mkdir -p $(obj)man
159 # Rules to generate postscripts and PNG images from .fig format files
160 quiet_cmd_fig2eps = FIG2EPS $@
161 cmd_fig2eps = fig2dev -Leps $< $@
164 @(which fig2dev > /dev/null 2>&1) || \
165 (echo "*** You need to install transfig ***"; \
169 quiet_cmd_fig2png = FIG2PNG $@
170 cmd_fig2png = fig2dev -Lpng $< $@
173 @(which fig2dev > /dev/null 2>&1) || \
174 (echo "*** You need to install transfig ***"; \
179 # Rule to convert a .c file to inline XML documentation
181 quiet_gen_xml = echo ' GEN $@'
186 echo "<programlisting>"; \
187 expand --tabs=8 < $< | \
188 sed -e "s/&/\\&/g" \
191 echo "</programlisting>") > $@
194 # Help targets as used by the top-level makefile
196 @echo ' U-Boot bootloader internal documentation in different formats:'
197 @echo ' htmldocs - HTML'
198 @echo ' pdfdocs - PDF'
199 @echo ' psdocs - Postscript'
200 @echo ' xmldocs - XML DocBook'
201 @echo ' mandocs - man pages'
202 @echo ' installmandocs - install man pages generated by mandocs'
203 @echo ' cleandocs - clean all generated DocBook files'
206 # Temporary files left by various tools
207 clean-files := $(DOCBOOKS) \
208 $(patsubst %.xml, %.dvi, $(DOCBOOKS)) \
209 $(patsubst %.xml, %.aux, $(DOCBOOKS)) \
210 $(patsubst %.xml, %.tex, $(DOCBOOKS)) \
211 $(patsubst %.xml, %.log, $(DOCBOOKS)) \
212 $(patsubst %.xml, %.out, $(DOCBOOKS)) \
213 $(patsubst %.xml, %.ps, $(DOCBOOKS)) \
214 $(patsubst %.xml, %.pdf, $(DOCBOOKS)) \
215 $(patsubst %.xml, %.html, $(DOCBOOKS)) \
216 $(patsubst %.xml, %.9, $(DOCBOOKS)) \
219 clean-dirs := $(patsubst %.xml,%,$(DOCBOOKS)) man
223 @$(Q)rm -f $(call objectify, $(clean-files))
224 @$(Q)rm -rf $(call objectify, $(clean-dirs))
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.