kumquat-buildroot/docs/manual/manual.mk
Thomas Petazzoni a4239f7fd1 core: introduce the BR2_EXTERNAL variable
This commit introduces the BR2_EXTERNAL environment variable, which
will allow to keep Buildroot customization (board-specific
configuration files or root filesystem overlays, package Config.in and
makefiles, as well as defconfigs) outside of the Buildroot tree.

This commit only introduces the variable itself, and ensures that it
is available within Config.in options. This allows us to use
$BR2_EXTERNAL in a 'source' statement in Config.in.

Following patches extend the usage of BR2_EXTERNAL to other areas
(packages and defconfigs).

In details, this commit:

 * Introduces the BR2_EXTERNAL Kconfig option. This option has no
   prompt, and is therefore not visible to the user and also not
   stored in the .config file. It is automatically set to the value of
   the BR2_EXTERNAL environment variable. The only purpose of this
   BR2_EXTERNAL Kconfig option is to allow $BR2_EXTERNAL to be
   properly expanded when used inside Kconfig source statements.

 * Calculates the BR2_EXTERNAL value to use. If passed on the command
   line, then this value is taken in priority, and saved to a
   .br-external hidden file in the output directory. If not passed on
   the command line, then we read the .br-external file from the
   output directory. This allows the user to not pass the BR2_EXTERNAL
   value at each make invocation. If no BR2_EXTERNAL value is passed,
   we define it to support/dummy-external, so that the kconfig code
   finds an existing $(BR2_EXTERNAL)/package/Config.in file to
   include.

 * Passes the BR2_EXTERNAL into the *config environment, so that its
   value is found when parsing/evaluating Config.in files and .config
   values.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Tested-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Acked-by: Ryan Barnett <rjbarnet@rockwellcollins.com>
Tested-by: "Samuel Martin" <s.martin49@gmail.com>
Acked-by: "Samuel Martin" <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2013-12-08 22:38:13 +01:00

91 lines
3.6 KiB
Makefile

# Packages included in BR2_EXTERNAL are not part of buildroot, so they
# should not be included in the manual.
manual-update-lists: manual-check-dependencies-lists
$(Q)$(call MESSAGE,"Updating the manual lists...")
$(Q)BR2_DEFCONFIG="" TOPDIR=$(TOPDIR) O=$(O)/docs/manual/.build \
BR2_EXTERNAL=$(TOPDIR)/support/dummy-external \
python -B $(TOPDIR)/support/scripts/gen-manual-lists.py
# we can't use suitable-host-package here because that's not available in
# the context of 'make release'
manual-check-dependencies:
$(Q)if [ -z "$(shell support/dependencies/check-host-asciidoc.sh)" ]; then \
echo "You need a sufficiently recent asciidoc on your host" \
"to generate the manual"; \
exit 1; \
fi
$(Q)if [ -z "`which w3m 2>/dev/null`" ]; then \
echo "You need w3m on your host to generate the manual"; \
exit 1; \
fi
manual-check-dependencies-pdf:
$(Q)if [ -z "`which dblatex 2>/dev/null`" ]; then \
echo "You need dblatex on your host to generate the pdf manual"; \
exit 1; \
fi
manual-check-dependencies-lists:
$(Q)if ! python -c "import argparse" >/dev/null 2>&1 ; then \
echo "You need python with argparse on your host to generate" \
"the list of packages in the manual"; \
exit 1; \
fi
################################################################################
# GENDOC -- generates the make targets needed to build a specific type of
# asciidoc documentation.
#
# argument 1 is the name of the document and must be a subdirectory of docs/;
# the top-level asciidoc file must have the same name
# argument 2 is the type of document to generate (-f argument of a2x)
# argument 3 is the document type as used in the make target
# argument 4 is the output file extension for the document type
# argument 5 is the human text for the document type
# argument 6 (optional) are extra arguments for a2x
#
# The variable <DOCUMENT_NAME>_SOURCES defines the dependencies.
################################################################################
define GENDOC_INNER
$(1): $(1)-$(3)
.PHONY: $(1)-$(3)
$(1)-$(3): $$(O)/docs/$(1)/$(1).$(4)
manual-check-dependencies-$(3):
$$(O)/docs/$(1)/$(1).$(4): docs/$(1)/$(1).txt \
$$($(call UPPERCASE,$(1))_SOURCES) \
manual-check-dependencies \
manual-check-dependencies-$(3) \
manual-update-lists
$(Q)$(call MESSAGE,"Generating $(5) $(1)...")
$(Q)mkdir -p $$(@D)/.build
$(Q)rsync -au docs/$(1)/*.txt $$(@D)/.build
$(Q)a2x $(6) -f $(2) -d book -L -r $(TOPDIR)/docs/images \
-D $$(@D) $$(@D)/.build/$(1).txt
-$(Q)rm -rf $$(@D)/.build
endef
################################################################################
# GENDOC -- generates the make targets needed to build asciidoc documentation.
#
# argument 1 is the name of the document and must be a subdirectory of docs/;
# the top-level asciidoc file must have the same name
#
# The variable <DOCUMENT_NAME>_SOURCES defines the dependencies.
################################################################################
define GENDOC
$(call GENDOC_INNER,$(1),xhtml,html,html,HTML,--xsltproc-opts "--stringparam toc.section.depth 2")
$(call GENDOC_INNER,$(1),chunked,split-html,chunked,split HTML,--xsltproc-opts "--stringparam toc.section.depth 2")
$(call GENDOC_INNER,$(1),pdf,pdf,pdf,PDF,--dblatex-opts "-P latex.output.revhistory=0")
$(call GENDOC_INNER,$(1),text,text,text,text)
$(call GENDOC_INNER,$(1),epub,epub,epub,ePUB)
clean: $(1)-clean
$(1)-clean:
$(Q)$(RM) -rf $(O)/docs/$(1)
.PHONY: $(1) $(1)-clean manual-update-lists
endef
MANUAL_SOURCES = $(sort $(wildcard docs/manual/*.txt) $(wildcard docs/images/*))
$(eval $(call GENDOC,manual))