Documentation/DocBook/Makefile

   1 ###
   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
   7 # list of DOCBOOKS.
   8
   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 journal-api.xml lsm.xml usb.xml \
  13             gadget.xml libata.xml mtdnand.xml librs.xml rapidio.xml
  14
  15 ###
  16 # The build process is as follows (targets):
  17 #              (xmldocs)
  18 # file.tmpl --> file.xml +--> file.ps   (psdocs)
  19 #                        +--> file.pdf  (pdfdocs)
  20 #                        +--> DIR=file  (htmldocs)
  21 #                        +--> man/      (mandocs)
  22
  23
  24 # for PDF and PS output you can choose between xmlto and docbook-utils tools
  25 PDF_METHOD      = $(prefer-db2x)
  26 PS_METHOD       = $(prefer-db2x)
  27
  28
  29 ###
  30 # The targets that may be used.
  31 PHONY += xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs
  32
  33 BOOKS := $(addprefix $(obj)/,$(DOCBOOKS))
  34 xmldocs: $(BOOKS)
  35 sgmldocs: xmldocs
  36
  37 PS := $(patsubst %.xml, %.ps, $(BOOKS))
  38 psdocs: $(PS)
  39
  40 PDF := $(patsubst %.xml, %.pdf, $(BOOKS))
  41 pdfdocs: $(PDF)
  42
  43 HTML := $(patsubst %.xml, %.html, $(BOOKS))
  44 htmldocs: $(HTML)
  45
  46 MAN := $(patsubst %.xml, %.9, $(BOOKS))
  47 mandocs: $(MAN)
  48
  49 installmandocs: mandocs
  50         mkdir -p /usr/local/man/man9/
  51         install Documentation/DocBook/man/*.9.gz /usr/local/man/man9/
  52
  53 ###
  54 #External programs used
  55 KERNELDOC = scripts/kernel-doc
  56 DOCPROC   = scripts/basic/docproc
  57
  58 XMLTOFLAGS = -m $(srctree)/Documentation/DocBook/stylesheet.xsl
  59 #XMLTOFLAGS += --skip-validation
  60
  61 ###
  62 # DOCPROC is used for two purposes:
  63 # 1) To generate a dependency list for a .tmpl file
  64 # 2) To preprocess a .tmpl file and call kernel-doc with
  65 #     appropriate parameters.
  66 # The following rules are used to generate the .xml documentation
  67 # required to generate the final targets. (ps, pdf, html).
  68 quiet_cmd_docproc = DOCPROC $@
  69       cmd_docproc = SRCTREE=$(srctree)/ $(DOCPROC) doc $< >$@
  70 define rule_docproc
  71         set -e;                                                         \
  72         $(if $($(quiet)cmd_$(1)),echo '  $($(quiet)cmd_$(1))';)         \
  73         $(cmd_$(1));                                                    \
  74         (                                                               \
  75           echo 'cmd_$@ := $(cmd_$(1))';                                 \
  76           echo $@: `SRCTREE=$(srctree) $(DOCPROC) depend $<`;           \
  77         ) > $(dir $@).$(notdir $@).cmd
  78 endef
  79
  80 %.xml: %.tmpl FORCE
  81         $(call if_changed_rule,docproc)
  82
  83 ###
  84 #Read in all saved dependency files
  85 cmd_files := $(wildcard $(foreach f,$(BOOKS),$(dir $(f)).$(notdir $(f)).cmd))
  86
  87 ifneq ($(cmd_files),)
  88   include $(cmd_files)
  89 endif
  90
  91 ###
  92 # Changes in kernel-doc force a rebuild of all documentation
  93 $(BOOKS): $(KERNELDOC)
  94
  95 ###
  96 # procfs guide uses a .c file as example code.
  97 # This requires an explicit dependency
  98 C-procfs-example = procfs_example.xml
  99 C-procfs-example2 = $(addprefix $(obj)/,$(C-procfs-example))
 100 $(obj)/procfs-guide.xml: $(C-procfs-example2)
 101
 102 notfoundtemplate = echo "*** You have to install docbook-utils or xmlto ***"; \
 103                    exit 1
 104 db2xtemplate = db2TYPE -o $(dir $@) $<
 105 xmltotemplate = xmlto TYPE $(XMLTOFLAGS) -o $(dir $@) $<
 106
 107 # determine which methods are available
 108 ifeq ($(shell which db2ps >/dev/null 2>&1 && echo found),found)
 109         use-db2x = db2x
 110         prefer-db2x = db2x
 111 else
 112         use-db2x = notfound
 113         prefer-db2x = $(use-xmlto)
 114 endif
 115 ifeq ($(shell which xmlto >/dev/null 2>&1 && echo found),found)
 116         use-xmlto = xmlto
 117         prefer-xmlto = xmlto
 118 else
 119         use-xmlto = notfound
 120         prefer-xmlto = $(use-db2x)
 121 endif
 122
 123 # the commands, generated from the chosen template
 124 quiet_cmd_db2ps = PS      $@
 125       cmd_db2ps = $(subst TYPE,ps, $($(PS_METHOD)template))
 126 %.ps : %.xml
 127         $(call cmd,db2ps)
 128
 129 quiet_cmd_db2pdf = PDF      $@
 130       cmd_db2pdf = $(subst TYPE,pdf, $($(PDF_METHOD)template))
 131 %.pdf : %.xml
 132         $(call cmd,db2pdf)
 133
 134 quiet_cmd_db2html = HTML   $@
 135       cmd_db2html = xmlto xhtml $(XMLTOFLAGS) -o $(patsubst %.html,%,$@) $< && \
 136                 echo '<a HREF="$(patsubst %.html,%,$(notdir $@))/index.html"> \
 137          Goto $(patsubst %.html,%,$(notdir $@))</a><p>' > $@
 138
 139 %.html: %.xml
 140         @(which xmlto > /dev/null 2>&1) || \
 141          (echo "*** You need to install xmlto ***"; \
 142           exit 1)
 143         @rm -rf $@ $(patsubst %.html,%,$@)
 144         $(call cmd,db2html)
 145         @if [ ! -z "$(PNG-$(basename $(notdir $@)))" ]; then \
 146             cp $(PNG-$(basename $(notdir $@))) $(patsubst %.html,%,$@); fi
 147
 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
 150 %.9 : %.xml
 151         @(which xmlto > /dev/null 2>&1) || \
 152          (echo "*** You need to install xmlto ***"; \
 153           exit 1)
 154         $(call cmd,db2man)
 155         @touch $@
 156
 157 ###
 158 # Rules to generate postscripts and PNG imgages from .fig format files
 159 quiet_cmd_fig2eps = FIG2EPS $@
 160       cmd_fig2eps = fig2dev -Leps $< $@
 161
 162 %.eps: %.fig
 163         @(which fig2dev > /dev/null 2>&1) || \
 164          (echo "*** You need to install transfig ***"; \
 165           exit 1)
 166         $(call cmd,fig2eps)
 167
 168 quiet_cmd_fig2png = FIG2PNG $@
 169       cmd_fig2png = fig2dev -Lpng $< $@
 170
 171 %.png: %.fig
 172         @(which fig2dev > /dev/null 2>&1) || \
 173          (echo "*** You need to install transfig ***"; \
 174           exit 1)
 175         $(call cmd,fig2png)
 176
 177 ###
 178 # Rule to convert a .c file to inline XML documentation
 179 %.xml: %.c
 180         @echo '  GEN     $@'
 181         @(                            \
 182            echo "<programlisting>";   \
 183            expand --tabs=8 < $< |     \
 184            sed -e "s/&/\\&amp;/g"     \
 185                -e "s/</\\&lt;/g"      \
 186                -e "s/>/\\&gt;/g";     \
 187            echo "</programlisting>")  > $@
 188
 189 ###
 190 # Help targets as used by the top-level makefile
 191 dochelp:
 192         @echo  '  Linux kernel internal documentation in different formats:'
 193         @echo  '  xmldocs (XML DocBook), psdocs (Postscript), pdfdocs (PDF)'
 194         @echo  '  htmldocs (HTML), mandocs (man pages, use installmandocs to install)'
 195
 196 ###
 197 # Temporary files left by various tools
 198 clean-files := $(DOCBOOKS) \
 199         $(patsubst %.xml, %.dvi,  $(DOCBOOKS)) \
 200         $(patsubst %.xml, %.aux,  $(DOCBOOKS)) \
 201         $(patsubst %.xml, %.tex,  $(DOCBOOKS)) \
 202         $(patsubst %.xml, %.log,  $(DOCBOOKS)) \
 203         $(patsubst %.xml, %.out,  $(DOCBOOKS)) \
 204         $(patsubst %.xml, %.ps,   $(DOCBOOKS)) \
 205         $(patsubst %.xml, %.pdf,  $(DOCBOOKS)) \
 206         $(patsubst %.xml, %.html, $(DOCBOOKS)) \
 207         $(patsubst %.xml, %.9,    $(DOCBOOKS)) \
 208         $(C-procfs-example)
 209
 210 clean-dirs := $(patsubst %.xml,%,$(DOCBOOKS))
 211
 212 #man put files in man subdir - traverse down
 213 subdir- := man/
 214
 215
 216 # Declare the contents of the .PHONY variable as phony.  We keep that
 217 # information in a variable se we can use it in if_changed and friends.
 218
 219 .PHONY: $(PHONY)