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52ddb7e9dd
"make help" if sphinx isn't present. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJXo8sIAAoJEI3ONVYwIuV6po0P/0ZZo+YF0GrPvOHr7uuUqAND 0+4WRfSsT74z5Rn/W3apeX6CM7IGBMSR2zM89E2nWmbE2Uo7bIbrwj6C+Y6gMMfd aws0Xi9899Jr6hVkeFVZ9foze+M2yc3tE1vFBby035uW3Zwyz2XHzaU/9vyLOLkJ c7jhqCWebqFEqOSWtw2FZYegt2oHSjUsQgGCh3kk2pCU+DzLHntwbblJLeMuTy+h zPVxTTBcBkUZcIjpkSvhqc/oCLCiWKLElmwxPBwfpNU9UlE0rol2Lx1eLClxadFl QVlb1UAIjPcLnHQoM8dL9NR0tkfGopIDuNCL26GU5ie9N4zurOj5a6hj+G5mZKLB tsMqIw+N7ig5FnaQhaCx3oN/VMZ0djxURu9XvKsHBmOCd2Bp8SDoqpCkTwCqCxcN DVdUjpS1WUT9w2A1jhH32mx+23eRwJa5oaTFpM3Y0z7Bl9N40ScY2WJcgBKWqHgx LRROJAzNOPojbBkwTDNsRValwgtutCcqaRw5mNQTp3YjjmltmqylCvJH3AST+z5r CmMDO96O3rUGsCZYoBhxafC2FUUh5RkUwQq/Cy8nrioMookE3Yd5A9DN6wWQ2pTt tev/z6s3ov8dygeF6u3noOHCa8GPUpSHO62FyHUKYnn6Tl8xh3x7rmUkUqrJZi5a dnXOZzp34eVhev5xDeDN =iD7L -----END PGP SIGNATURE----- Merge tag 'doc-4.8-fixes' of git://git.lwn.net/linux Pull documentation fixes from Jonathan Corbet: "Three fixes for the docs build, including removing an annoying warning on 'make help' if sphinx isn't present" * tag 'doc-4.8-fixes' of git://git.lwn.net/linux: DocBook: use DOCBOOKS="" to ignore DocBooks instead of IGNORE_DOCBOOKS=1 Documenation: update cgroup's document path Documentation/sphinx: do not warn about missing tools in 'make help'
271 lines
8.4 KiB
Makefile
271 lines
8.4 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 := z8530book.xml device-drivers.xml \
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kernel-hacking.xml kernel-locking.xml deviceiobook.xml \
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writing_usb_driver.xml networking.xml \
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kernel-api.xml filesystems.xml lsm.xml usb.xml kgdb.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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80211.xml debugobjects.xml sh.xml regulator.xml \
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alsa-driver-api.xml writing-an-alsa-driver.xml \
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tracepoint.xml w1.xml \
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writing_musb_glue_layer.xml crypto-API.xml iio.xml
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ifeq ($(DOCBOOKS),)
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# Skip DocBook build if the user explicitly requested no DOCBOOKS.
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.DEFAULT:
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@echo " SKIP DocBook $@ target (DOCBOOKS=\"\" specified)."
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else
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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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targets += $(DOCBOOKS)
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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 cmd,build_main_index)
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MAN := $(patsubst %.xml, %.9, $(BOOKS))
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mandocs: $(MAN)
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find $(obj)/man -name '*.9' | xargs gzip -nf
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installmandocs: mandocs
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mkdir -p /usr/local/man/man9/
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find $(obj)/man -name '*.9.gz' -printf '%h %f\n' | \
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sort -k 2 -k 1 | uniq -f 1 | sed -e 's: :/:' | \
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xargs install -m 644 -t /usr/local/man/man9/
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# no-op for the DocBook toolchain
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epubdocs:
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###
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#External programs used
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KERNELDOCXMLREF = $(srctree)/scripts/kernel-doc-xml-ref
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KERNELDOC = $(srctree)/scripts/kernel-doc
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DOCPROC = $(objtree)/scripts/docproc
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CHECK_LC_CTYPE = $(objtree)/scripts/check-lc_ctype
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# Use a fixed encoding - UTF-8 if the C library has support built-in
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# or ASCII if not
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LC_CTYPE := $(call try-run, LC_CTYPE=C.UTF-8 $(CHECK_LC_CTYPE),C.UTF-8,C)
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export LC_CTYPE
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XMLTOFLAGS = -m $(srctree)/$(src)/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 $(KERNELDOC) $(DOCPROC) $(KERNELDOCXMLREF) FORCE
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$(call if_changed_rule,docproc)
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# Tell kbuild to always build the programs
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always := $(hostprogs-y)
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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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index = index.html
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main_idx = $(obj)/$(index)
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quiet_cmd_build_main_index = HTML $(main_idx)
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cmd_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 html $(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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###
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# Rules to create an aux XML and .db, and use them to re-process the DocBook XML
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# to fill internal hyperlinks
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gen_aux_xml = :
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quiet_gen_aux_xml = echo ' XMLREF $@'
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silent_gen_aux_xml = :
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%.aux.xml: %.xml
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@$($(quiet)gen_aux_xml)
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@rm -rf $@
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@(cat $< | egrep "^<refentry id" | egrep -o "\".*\"" | cut -f 2 -d \" > $<.db)
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@$(KERNELDOCXMLREF) -db $<.db $< > $@
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.PRECIOUS: %.aux.xml
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%.html: %.aux.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 $(obj)/man/$(*F) $< ; fi
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%.9 : %.xml
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@(which xmlto > /dev/null 2>&1) || \
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(echo "*** You need to install xmlto ***"; \
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exit 1)
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$(Q)mkdir -p $(obj)/man/$(*F)
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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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gen_xml = :
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quiet_gen_xml = echo ' GEN $@'
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silent_gen_xml = :
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%.xml: %.c
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@$($(quiet)gen_xml)
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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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endif # DOCBOOKS=""
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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 (DocBook):'
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@echo ' htmldocs - HTML'
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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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@echo ' mandocs - man pages'
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@echo ' installmandocs - install man pages generated by mandocs'
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@echo ' cleandocs - clean all generated DocBook files'
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@echo
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@echo ' make DOCBOOKS="s1.xml s2.xml" [target] Generate only docs s1.xml s2.xml'
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@echo ' valid values for DOCBOOKS are: $(DOCBOOKS)'
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@echo
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@echo " make DOCBOOKS=\"\" [target] Don't generate docs from Docbook"
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@echo ' This is useful to generate only the ReST docs (Sphinx)'
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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, $(DOCBOOKS)) \
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$(patsubst %.xml, %.aux.xml, $(DOCBOOKS)) \
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$(patsubst %.xml, %.xml.db, $(DOCBOOKS)) \
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$(patsubst %.xml, %.xml, $(DOCBOOKS)) \
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$(index)
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clean-dirs := $(patsubst %.xml,%,$(DOCBOOKS)) man
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cleandocs:
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$(Q)rm -f $(call objectify, $(clean-files))
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$(Q)rm -rf $(call objectify, $(clean-dirs))
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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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