191 lines
7.4 KiB
Makefile
191 lines
7.4 KiB
Makefile
# we can't use suitable-host-package here because that's not available in
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# the context of 'make release'
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.PHONY: asciidoc-check-dependencies
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asciidoc-check-dependencies:
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$(Q)if [ -z "$(shell support/dependencies/check-host-asciidoc.sh)" ]; then \
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echo "You need a sufficiently recent asciidoc on your host" \
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"to generate documents"; \
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exit 1; \
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fi
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$(Q)if [ -z "`which w3m 2>/dev/null`" ]; then \
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echo "You need w3m on your host to generate documents"; \
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exit 1; \
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fi
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asciidoc-check-dependencies-pdf:
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$(Q)if [ -z "`which dblatex 2>/dev/null`" ]; then \
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echo "You need dblatex on your host to generate PDF documents"; \
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exit 1; \
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fi
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# PDF generation is broken because of a bug in xsltproc program provided
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# by libxslt <=1.1.28, which does not honor an option we need to set.
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# Fortunately, this bug is already fixed upstream:
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# https://gitorious.org/libxslt/libxslt/commit/5af7ad745323004984287e48b42712e7305de35c
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#
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# So, bail out when trying to build a PDF using a buggy version of the
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# xsltproc program.
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#
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# So, to overcome this issue and being able to build a PDF, you can
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# build xsltproc from its source repository, then run:
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# $ PATH=/path/to/custom-xsltproc/bin:${PATH} make manual
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GENDOC_XSLTPROC_IS_BROKEN = \
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$(shell xsltproc --maxvars 0 >/dev/null 2>/dev/null || echo y)
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# Apply this configuration to all documents
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BR_ASCIIDOC_CONF = docs/conf/asciidoc.conf
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################################################################################
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# ASCIIDOC_INNER -- generates the make targets needed to build a specific type of
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# asciidoc documentation.
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#
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# argument 1 is the name of the document and the top-level asciidoc file must
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# have the same name
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# argument 2 is the uppercase name of the document
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# argument 3 is the type of document to generate (-f argument of a2x)
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# argument 4 is the document type as used in the make target
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# argument 5 is the output file extension for the document type
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# argument 6 is the human text for the document type
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# argument 7 (optional) are extra arguments for a2x
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#
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# The variable <DOCUMENT_NAME>_SOURCES defines the dependencies.
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#
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# Since this function will be called from within an $(eval ...)
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# all variable references except the arguments must be $$-quoted.
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################################################################################
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define ASCIIDOC_INNER
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$(1): $(1)-$(4)
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.PHONY: $(1)-$(4)
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$(1)-$(4): $$(O)/docs/$(1)/$(1).$(5)
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asciidoc-check-dependencies-$(4):
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.PHONY: $(1)-check-dependencies-$(4)
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# Single line, because splitting a foreach is not easy...
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$(1)-check-dependencies-$(4): asciidoc-check-dependencies-$(4)
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$$(Q)$$(foreach hook,$$($(2)_CHECK_DEPENDENCIES_$$(call UPPERCASE,$(4))_HOOKS),$$(call $$(hook))$$(sep))
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# Include Buildroot's AsciiDoc configuration first:
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# - generic configuration,
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# - then output-specific configuration
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ifneq ($$(wildcard $$(BR_ASCIIDOC_CONF)),)
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$(2)_$(3)_ASCIIDOC_OPTS += -f $$(BR_ASCIIDOC_CONF)
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endif
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BR_$(3)_ASCIIDOC_CONF = docs/conf/asciidoc-$(3).conf
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ifneq ($$(wildcard $$(BR_$(3)_ASCIIDOC_CONF)),)
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$(2)_$(3)_ASCIIDOC_OPTS += -f $$(BR_$(3)_ASCIIDOC_CONF)
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endif
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# Then include the document's AsciiDoc configuration:
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# - generic configuration,
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# - then output-specific configuration
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ifneq ($$(wildcard $$($(2)_ASCIIDOC_CONF)),)
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$(2)_$(3)_ASCIIDOC_OPTS += -f $$($(2)_ASCIIDOC_CONF)
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endif
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$(2)_$(3)_ASCIIDOC_CONF = $$($(2)_DOCDIR)/asciidoc-$(3).conf
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ifneq ($$(wildcard $$($(2)_$(3)_ASCIIDOC_CONF)),)
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$(2)_$(3)_ASCIIDOC_OPTS += -f $$($(2)_$(3)_ASCIIDOC_CONF)
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endif
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# Handle a2x warning about --destination-dir option only applicable to HTML
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# based outputs. So:
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# - use the --destination-dir option if possible (html and split-html),
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# - otherwise copy the generated document to the output directory
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$(2)_$(3)_A2X_OPTS =
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ifneq ($$(filter $(4),html split-html),)
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$(2)_$(3)_A2X_OPTS += --destination-dir="$$(@D)"
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else
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define $(2)_$(3)_INSTALL_CMDS
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$$(Q)cp -f $$(BUILD_DIR)/docs/$(1)/$(1).$(5) $$(@D)
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endef
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endif
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$$(O)/docs/$(1)/$(1).$(5): export TZ=UTC
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ifeq ($(5)-$$(GENDOC_XSLTPROC_IS_BROKEN),pdf-y)
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$$(O)/docs/$(1)/$(1).$(5):
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$$(warning PDF generation is disabled because of a bug in \
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xsltproc. To be able to generate a PDF, you should \
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build xsltproc from the libxslt sources >=1.1.29 and pass it \
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to make through the command line: \
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'PATH=/path/to/custom-xsltproc/bin:$$$${PATH} make $(1)-pdf')
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else
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# -r $(@D) is there for documents that use external filters; those filters
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# generate code at the same location it finds the document's source files.
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$$(O)/docs/$(1)/$(1).$(5): $$($(2)_SOURCES) \
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$(1)-check-dependencies \
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$(1)-check-dependencies-$(4) \
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$(1)-prepare-sources
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$$(Q)$$(call MESSAGE,"Generating $(6) $(1)...")
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$$(Q)mkdir -p $$(@D)
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$$(Q)a2x $(7) -f $(3) -d book -L \
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$$(foreach r,$$($(2)_RESOURCES) $$(@D), \
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--resource="$$(abspath $$(r))") \
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$$($(2)_$(3)_A2X_OPTS) \
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--asciidoc-opts="$$($(2)_$(3)_ASCIIDOC_OPTS)" \
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$$(BUILD_DIR)/docs/$(1)/$(1).txt
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# install the generated document
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$$($(2)_$(3)_INSTALL_CMDS)
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endif
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endef
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################################################################################
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# ASCIIDOC -- generates the make targets needed to build asciidoc documentation.
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#
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# argument 1 is the lowercase name of the document; the document's main file
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# must have the same name, with the .txt extension
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# argument 2 is the uppercase name of the document
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#
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# The variable <DOCUMENT_NAME>_SOURCES defines the dependencies.
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# The variable <DOCUMENT_NAME>_RESOURCES defines where the document's
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# resources, such as images, are located; must be an absolute path.
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################################################################################
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define ASCIIDOC
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$(2)_DOCDIR = $(pkgdir)
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# Single line, because splitting a foreach is not easy...
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.PHONY: $(1)-check-dependencies
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$(1)-check-dependencies: asciidoc-check-dependencies $$($(2)_DEPENDENCIES)
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$$(Q)$$(foreach hook,$$($(2)_CHECK_DEPENDENCIES_HOOKS),$$(call $$(hook))$$(sep))
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# Single line, because splitting a foreach is not easy...
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# Do not touch the stamp file, so we get to rsync again every time we build
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# the document.
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$$(BUILD_DIR)/docs/$(1)/.stamp_doc_rsynced:
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$$(Q)$$(call MESSAGE,"Preparing the $(1) sources...")
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$$(Q)mkdir -p $$(@D)
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$$(Q)rsync -a $$($(2)_DOCDIR) $$(@D)
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$$(Q)$$(foreach hook,$$($(2)_POST_RSYNC_HOOKS),$$(call $$(hook))$$(sep))
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.PHONY: $(1)-prepare-sources
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$(1)-prepare-sources: $$(BUILD_DIR)/docs/$(1)/.stamp_doc_rsynced
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$(2)_ASCIIDOC_CONF = $$($(2)_DOCDIR)/asciidoc.conf
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$(call ASCIIDOC_INNER,$(1),$(2),xhtml,html,html,HTML,\
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--xsltproc-opts "--stringparam toc.section.depth 1")
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$(call ASCIIDOC_INNER,$(1),$(2),chunked,split-html,chunked,split HTML,\
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--xsltproc-opts "--stringparam toc.section.depth 1")
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# dblatex needs to pass the '--maxvars ...' option to xsltproc to prevent it
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# from reaching the template recursion limit when processing the (long) target
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# package table and bailing out.
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$(call ASCIIDOC_INNER,$(1),$(2),pdf,pdf,pdf,PDF,\
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--dblatex-opts "-P latex.output.revhistory=0 -x '--maxvars 100000'")
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$(call ASCIIDOC_INNER,$(1),$(2),text,text,text,text)
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$(call ASCIIDOC_INNER,$(1),$(2),epub,epub,epub,ePUB)
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clean: $(1)-clean
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$(1)-clean:
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$$(Q)$$(RM) -rf $$(BUILD_DIR)/docs/$(1)
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.PHONY: $(1) $(1)-clean
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endef
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################################################################################
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# asciidoc-document -- the target generator macro for asciidoc documents
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################################################################################
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asciidoc-document = $(call ASCIIDOC,$(pkgname),$(call UPPERCASE,$(pkgname)))
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