dbbea6713d
Quite a while ago I started this book. The required kernel-doc patches have since gone into the tree so it is now possible to build the book in mainline. The actual documentation is still rather incomplete and not all things are linked into the book, but this enables us to edit the documentation collaboratively, hopefully driver authors can add documentation based on their experience with mac80211. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
230 lines
7 KiB
Makefile
230 lines
7 KiB
Makefile
###
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# This makefile is used to generate the kernel documentation,
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# primarily based on in-line comments in various source files.
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# See Documentation/kernel-doc-nano-HOWTO.txt for instruction in how
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# to document the SRC - and how to read it.
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# To add a new book the only step required is to add the book to the
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# list of DOCBOOKS.
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DOCBOOKS := wanbook.xml z8530book.xml mcabook.xml videobook.xml \
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kernel-hacking.xml kernel-locking.xml deviceiobook.xml \
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procfs-guide.xml writing_usb_driver.xml networking.xml \
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kernel-api.xml filesystems.xml lsm.xml usb.xml \
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gadget.xml libata.xml mtdnand.xml librs.xml rapidio.xml \
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genericirq.xml s390-drivers.xml uio-howto.xml scsi.xml \
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mac80211.xml
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###
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# The build process is as follows (targets):
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# (xmldocs) [by docproc]
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# file.tmpl --> file.xml +--> file.ps (psdocs) [by db2ps or xmlto]
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# +--> file.pdf (pdfdocs) [by db2pdf or xmlto]
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# +--> DIR=file (htmldocs) [by xmlto]
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# +--> man/ (mandocs) [by xmlto]
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# for PDF and PS output you can choose between xmlto and docbook-utils tools
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PDF_METHOD = $(prefer-db2x)
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PS_METHOD = $(prefer-db2x)
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###
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# The targets that may be used.
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PHONY += xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs
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BOOKS := $(addprefix $(obj)/,$(DOCBOOKS))
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xmldocs: $(BOOKS)
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sgmldocs: xmldocs
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PS := $(patsubst %.xml, %.ps, $(BOOKS))
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psdocs: $(PS)
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PDF := $(patsubst %.xml, %.pdf, $(BOOKS))
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pdfdocs: $(PDF)
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HTML := $(sort $(patsubst %.xml, %.html, $(BOOKS)))
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htmldocs: $(HTML)
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$(call build_main_index)
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MAN := $(patsubst %.xml, %.9, $(BOOKS))
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mandocs: $(MAN)
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installmandocs: mandocs
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mkdir -p /usr/local/man/man9/
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install Documentation/DocBook/man/*.9.gz /usr/local/man/man9/
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###
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#External programs used
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KERNELDOC = $(srctree)/scripts/kernel-doc
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DOCPROC = $(objtree)/scripts/basic/docproc
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XMLTOFLAGS = -m $(srctree)/Documentation/DocBook/stylesheet.xsl
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#XMLTOFLAGS += --skip-validation
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###
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# DOCPROC is used for two purposes:
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# 1) To generate a dependency list for a .tmpl file
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# 2) To preprocess a .tmpl file and call kernel-doc with
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# appropriate parameters.
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# The following rules are used to generate the .xml documentation
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# required to generate the final targets. (ps, pdf, html).
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quiet_cmd_docproc = DOCPROC $@
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cmd_docproc = SRCTREE=$(srctree)/ $(DOCPROC) doc $< >$@
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define rule_docproc
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set -e; \
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$(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))';) \
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$(cmd_$(1)); \
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( \
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echo 'cmd_$@ := $(cmd_$(1))'; \
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echo $@: `SRCTREE=$(srctree) $(DOCPROC) depend $<`; \
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) > $(dir $@).$(notdir $@).cmd
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endef
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%.xml: %.tmpl FORCE
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$(call if_changed_rule,docproc)
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###
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#Read in all saved dependency files
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cmd_files := $(wildcard $(foreach f,$(BOOKS),$(dir $(f)).$(notdir $(f)).cmd))
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ifneq ($(cmd_files),)
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include $(cmd_files)
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endif
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###
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# Changes in kernel-doc force a rebuild of all documentation
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$(BOOKS): $(KERNELDOC)
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###
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# procfs guide uses a .c file as example code.
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# This requires an explicit dependency
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C-procfs-example = procfs_example.xml
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C-procfs-example2 = $(addprefix $(obj)/,$(C-procfs-example))
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$(obj)/procfs-guide.xml: $(C-procfs-example2)
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notfoundtemplate = echo "*** You have to install docbook-utils or xmlto ***"; \
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exit 1
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db2xtemplate = db2TYPE -o $(dir $@) $<
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xmltotemplate = xmlto TYPE $(XMLTOFLAGS) -o $(dir $@) $<
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# determine which methods are available
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ifeq ($(shell which db2ps >/dev/null 2>&1 && echo found),found)
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use-db2x = db2x
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prefer-db2x = db2x
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else
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use-db2x = notfound
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prefer-db2x = $(use-xmlto)
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endif
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ifeq ($(shell which xmlto >/dev/null 2>&1 && echo found),found)
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use-xmlto = xmlto
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prefer-xmlto = xmlto
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else
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use-xmlto = notfound
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prefer-xmlto = $(use-db2x)
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endif
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# the commands, generated from the chosen template
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quiet_cmd_db2ps = PS $@
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cmd_db2ps = $(subst TYPE,ps, $($(PS_METHOD)template))
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%.ps : %.xml
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$(call cmd,db2ps)
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quiet_cmd_db2pdf = PDF $@
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cmd_db2pdf = $(subst TYPE,pdf, $($(PDF_METHOD)template))
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%.pdf : %.xml
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$(call cmd,db2pdf)
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main_idx = Documentation/DocBook/index.html
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build_main_index = rm -rf $(main_idx) && \
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echo '<h1>Linux Kernel HTML Documentation</h1>' >> $(main_idx) && \
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echo '<h2>Kernel Version: $(KERNELVERSION)</h2>' >> $(main_idx) && \
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cat $(HTML) >> $(main_idx)
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quiet_cmd_db2html = HTML $@
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cmd_db2html = xmlto xhtml $(XMLTOFLAGS) -o $(patsubst %.html,%,$@) $< && \
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echo '<a HREF="$(patsubst %.html,%,$(notdir $@))/index.html"> \
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$(patsubst %.html,%,$(notdir $@))</a><p>' > $@
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%.html: %.xml
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@(which xmlto > /dev/null 2>&1) || \
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(echo "*** You need to install xmlto ***"; \
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exit 1)
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@rm -rf $@ $(patsubst %.html,%,$@)
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$(call cmd,db2html)
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@if [ ! -z "$(PNG-$(basename $(notdir $@)))" ]; then \
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cp $(PNG-$(basename $(notdir $@))) $(patsubst %.html,%,$@); fi
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quiet_cmd_db2man = MAN $@
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cmd_db2man = if grep -q refentry $<; then xmlto man $(XMLTOFLAGS) -o $(obj)/man $< ; gzip -f $(obj)/man/*.9; fi
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%.9 : %.xml
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@(which xmlto > /dev/null 2>&1) || \
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(echo "*** You need to install xmlto ***"; \
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exit 1)
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$(Q)mkdir -p $(obj)/man
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$(call cmd,db2man)
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@touch $@
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###
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# Rules to generate postscripts and PNG images from .fig format files
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quiet_cmd_fig2eps = FIG2EPS $@
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cmd_fig2eps = fig2dev -Leps $< $@
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%.eps: %.fig
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@(which fig2dev > /dev/null 2>&1) || \
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(echo "*** You need to install transfig ***"; \
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exit 1)
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$(call cmd,fig2eps)
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quiet_cmd_fig2png = FIG2PNG $@
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cmd_fig2png = fig2dev -Lpng $< $@
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%.png: %.fig
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@(which fig2dev > /dev/null 2>&1) || \
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(echo "*** You need to install transfig ***"; \
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exit 1)
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$(call cmd,fig2png)
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###
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# Rule to convert a .c file to inline XML documentation
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%.xml: %.c
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@echo ' GEN $@'
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@( \
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echo "<programlisting>"; \
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expand --tabs=8 < $< | \
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sed -e "s/&/\\&/g" \
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-e "s/</\\</g" \
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-e "s/>/\\>/g"; \
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echo "</programlisting>") > $@
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###
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# Help targets as used by the top-level makefile
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dochelp:
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@echo ' Linux kernel internal documentation in different formats:'
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@echo ' htmldocs - HTML'
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@echo ' installmandocs - install man pages generated by mandocs'
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@echo ' mandocs - man pages'
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@echo ' pdfdocs - PDF'
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@echo ' psdocs - Postscript'
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@echo ' xmldocs - XML DocBook'
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###
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# Temporary files left by various tools
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clean-files := $(DOCBOOKS) \
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$(patsubst %.xml, %.dvi, $(DOCBOOKS)) \
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$(patsubst %.xml, %.aux, $(DOCBOOKS)) \
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$(patsubst %.xml, %.tex, $(DOCBOOKS)) \
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$(patsubst %.xml, %.log, $(DOCBOOKS)) \
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$(patsubst %.xml, %.out, $(DOCBOOKS)) \
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$(patsubst %.xml, %.ps, $(DOCBOOKS)) \
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$(patsubst %.xml, %.pdf, $(DOCBOOKS)) \
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$(patsubst %.xml, %.html, $(DOCBOOKS)) \
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$(patsubst %.xml, %.9, $(DOCBOOKS)) \
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$(C-procfs-example)
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clean-dirs := $(patsubst %.xml,%,$(DOCBOOKS)) man
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# Declare the contents of the .PHONY variable as phony. We keep that
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# information in a variable se we can use it in if_changed and friends.
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.PHONY: $(PHONY)
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