Documentation/Makefile

   1 # -*- makefile -*-
   2 # Makefile for Sphinx documentation
   3 #
   4
   5 subdir-y := devicetree/bindings/
   6
   7 # You can set these variables from the command line.
   8 SPHINXBUILD   = sphinx-build
   9 SPHINXOPTS    =
  10 SPHINXDIRS    = .
  11 _SPHINXDIRS   = $(patsubst $(srctree)/Documentation/%/conf.py,%,$(wildcard $(srctree)/Documentation/*/conf.py))
  12 SPHINX_CONF   = conf.py
  13 PAPER         =
  14 BUILDDIR      = $(obj)/output
  15 PDFLATEX      = xelatex
  16 LATEXOPTS     = -interaction=batchmode
  17
  18 # User-friendly check for sphinx-build
  19 HAVE_SPHINX := $(shell if which $(SPHINXBUILD) >/dev/null 2>&1; then echo 1; else echo 0; fi)
  20
  21 ifeq ($(HAVE_SPHINX),0)
  22
  23 .DEFAULT:
  24         $(warning The '$(SPHINXBUILD)' command was not found. Make sure you have Sphinx installed and in PATH, or set the SPHINXBUILD make variable to point to the full path of the '$(SPHINXBUILD)' executable.)
  25         @echo
  26         @./scripts/sphinx-pre-install
  27         @echo "  SKIP    Sphinx $@ target."
  28
  29 else # HAVE_SPHINX
  30
  31 # User-friendly check for pdflatex
  32 HAVE_PDFLATEX := $(shell if which $(PDFLATEX) >/dev/null 2>&1; then echo 1; else echo 0; fi)
  33
  34 # Internal variables.
  35 PAPEROPT_a4     = -D latex_paper_size=a4
  36 PAPEROPT_letter = -D latex_paper_size=letter
  37 KERNELDOC       = $(srctree)/scripts/kernel-doc
  38 KERNELDOC_CONF  = -D kerneldoc_srctree=$(srctree) -D kerneldoc_bin=$(KERNELDOC)
  39 ALLSPHINXOPTS   =  $(KERNELDOC_CONF) $(PAPEROPT_$(PAPER)) $(SPHINXOPTS)
  40 # the i18n builder cannot share the environment and doctrees with the others
  41 I18NSPHINXOPTS  = $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
  42
  43 # commands; the 'cmd' from scripts/Kbuild.include is not *loopable*
  44 loop_cmd = $(echo-cmd) $(cmd_$(1)) || exit;
  45
  46 # $2 sphinx builder e.g. "html"
  47 # $3 name of the build subfolder / e.g. "media", used as:
  48 #    * dest folder relative to $(BUILDDIR) and
  49 #    * cache folder relative to $(BUILDDIR)/.doctrees
  50 # $4 dest subfolder e.g. "man" for man pages at media/man
  51 # $5 reST source folder relative to $(srctree)/$(src),
  52 #    e.g. "media" for the linux-tv book-set at ./Documentation/media
  53
  54 quiet_cmd_sphinx = SPHINX  $@ --> file://$(abspath $(BUILDDIR)/$3/$4)
  55       cmd_sphinx = $(MAKE) BUILDDIR=$(abspath $(BUILDDIR)) $(build)=Documentation/media $2 && \
  56         PYTHONDONTWRITEBYTECODE=1 \
  57         BUILDDIR=$(abspath $(BUILDDIR)) SPHINX_CONF=$(abspath $(srctree)/$(src)/$5/$(SPHINX_CONF)) \
  58         $(SPHINXBUILD) \
  59         -b $2 \
  60         -c $(abspath $(srctree)/$(src)) \
  61         -d $(abspath $(BUILDDIR)/.doctrees/$3) \
  62         -D version=$(KERNELVERSION) -D release=$(KERNELRELEASE) \
  63         $(ALLSPHINXOPTS) \
  64         $(abspath $(srctree)/$(src)/$5) \
  65         $(abspath $(BUILDDIR)/$3/$4)
  66
  67 htmldocs:
  68         @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,html,$(var),,$(var)))
  69
  70 linkcheckdocs:
  71         @$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,linkcheck,$(var),,$(var)))
  72
  73 latexdocs:
  74         @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,latex,$(var),latex,$(var)))
  75
  76 ifeq ($(HAVE_PDFLATEX),0)
  77
  78 pdfdocs:
  79         $(warning The '$(PDFLATEX)' command was not found. Make sure you have it installed and in PATH to produce PDF output.)
  80         @echo "  SKIP    Sphinx $@ target."
  81
  82 else # HAVE_PDFLATEX
  83
  84 pdfdocs: latexdocs
  85         $(foreach var,$(SPHINXDIRS), $(MAKE) PDFLATEX=$(PDFLATEX) LATEXOPTS="$(LATEXOPTS)" -C $(BUILDDIR)/$(var)/latex || exit;)
  86
  87 endif # HAVE_PDFLATEX
  88
  89 epubdocs:
  90         @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,epub,$(var),epub,$(var)))
  91
  92 xmldocs:
  93         @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,xml,$(var),xml,$(var)))
  94
  95 endif # HAVE_SPHINX
  96
  97 # The following targets are independent of HAVE_SPHINX, and the rules should
  98 # work or silently pass without Sphinx.
  99
 100 refcheckdocs:
 101         $(Q)cd $(srctree);scripts/documentation-file-ref-check
 102
 103 cleandocs:
 104         $(Q)rm -rf $(BUILDDIR)
 105         $(Q)$(MAKE) BUILDDIR=$(abspath $(BUILDDIR)) $(build)=Documentation/media clean
 106
 107 dochelp:
 108         @echo  ' Linux kernel internal documentation in different formats from ReST:'
 109         @echo  '  htmldocs        - HTML'
 110         @echo  '  latexdocs       - LaTeX'
 111         @echo  '  pdfdocs         - PDF'
 112         @echo  '  epubdocs        - EPUB'
 113         @echo  '  xmldocs         - XML'
 114         @echo  '  linkcheckdocs   - check for broken external links (will connect to external hosts)'
 115         @echo  '  refcheckdocs    - check for references to non-existing files under Documentation'
 116         @echo  '  cleandocs       - clean all generated files'
 117         @echo
 118         @echo  '  make SPHINXDIRS="s1 s2" [target] Generate only docs of folder s1, s2'
 119         @echo  '  valid values for SPHINXDIRS are: $(_SPHINXDIRS)'
 120         @echo
 121         @echo  '  make SPHINX_CONF={conf-file} [target] use *additional* sphinx-build'
 122         @echo  '  configuration. This is e.g. useful to build with nit-picking config.'
 123         @echo
 124         @echo  '  Default location for the generated documents is Documentation/output'