Documentation/Makefile

   1 # -*- makefile -*-
   2 # Makefile for Sphinx documentation
   3 #
   4
   5 # for cleaning
   6 subdir- := devicetree/bindings
   7
   8 # Check for broken documentation file references
   9 ifeq ($(CONFIG_WARN_MISSING_DOCUMENTS),y)
  10 $(shell $(srctree)/scripts/documentation-file-ref-check --warn)
  11 endif
  12
  13 # You can set these variables from the command line.
  14 SPHINXBUILD   = sphinx-build
  15 SPHINXOPTS    =
  16 SPHINXDIRS    = .
  17 _SPHINXDIRS   = $(sort $(patsubst $(srctree)/Documentation/%/index.rst,%,$(wildcard $(srctree)/Documentation/*/index.rst)))
  18 SPHINX_CONF   = conf.py
  19 PAPER         =
  20 BUILDDIR      = $(obj)/output
  21 PDFLATEX      = xelatex
  22 LATEXOPTS     = -interaction=batchmode
  23
  24 # User-friendly check for sphinx-build
  25 HAVE_SPHINX := $(shell if which $(SPHINXBUILD) >/dev/null 2>&1; then echo 1; else echo 0; fi)
  26
  27 ifeq ($(HAVE_SPHINX),0)
  28
  29 .DEFAULT:
  30         $(warning The '$(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 '$(SPHINXBUILD)' executable.)
  31         @echo
  32         @$(srctree)/scripts/sphinx-pre-install
  33         @echo "  SKIP    Sphinx $@ target."
  34
  35 else # HAVE_SPHINX
  36
  37 # User-friendly check for pdflatex and latexmk
  38 HAVE_PDFLATEX := $(shell if which $(PDFLATEX) >/dev/null 2>&1; then echo 1; else echo 0; fi)
  39 HAVE_LATEXMK := $(shell if which latexmk >/dev/null 2>&1; then echo 1; else echo 0; fi)
  40
  41 ifeq ($(HAVE_LATEXMK),1)
  42         PDFLATEX := latexmk -$(PDFLATEX)
  43 endif #HAVE_LATEXMK
  44
  45 # Internal variables.
  46 PAPEROPT_a4     = -D latex_paper_size=a4
  47 PAPEROPT_letter = -D latex_paper_size=letter
  48 KERNELDOC       = $(srctree)/scripts/kernel-doc
  49 KERNELDOC_CONF  = -D kerneldoc_srctree=$(srctree) -D kerneldoc_bin=$(KERNELDOC)
  50 ALLSPHINXOPTS   =  $(KERNELDOC_CONF) $(PAPEROPT_$(PAPER)) $(SPHINXOPTS)
  51 # the i18n builder cannot share the environment and doctrees with the others
  52 I18NSPHINXOPTS  = $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
  53
  54 # commands; the 'cmd' from scripts/Kbuild.include is not *loopable*
  55 loop_cmd = $(echo-cmd) $(cmd_$(1)) || exit;
  56
  57 # $2 sphinx builder e.g. "html"
  58 # $3 name of the build subfolder / e.g. "userspace-api/media", used as:
  59 #    * dest folder relative to $(BUILDDIR) and
  60 #    * cache folder relative to $(BUILDDIR)/.doctrees
  61 # $4 dest subfolder e.g. "man" for man pages at userspace-api/media/man
  62 # $5 reST source folder relative to $(srctree)/$(src),
  63 #    e.g. "userspace-api/media" for the linux-tv book-set at ./Documentation/userspace-api/media
  64
  65 quiet_cmd_sphinx = SPHINX  $@ --> file://$(abspath $(BUILDDIR)/$3/$4)
  66       cmd_sphinx = $(MAKE) BUILDDIR=$(abspath $(BUILDDIR)) $(build)=Documentation/userspace-api/media $2 && \
  67         PYTHONDONTWRITEBYTECODE=1 \
  68         BUILDDIR=$(abspath $(BUILDDIR)) SPHINX_CONF=$(abspath $(srctree)/$(src)/$5/$(SPHINX_CONF)) \
  69         $(PYTHON) $(srctree)/scripts/jobserver-exec \
  70         $(SHELL) $(srctree)/Documentation/sphinx/parallel-wrapper.sh \
  71         $(SPHINXBUILD) \
  72         -b $2 \
  73         -c $(abspath $(srctree)/$(src)) \
  74         -d $(abspath $(BUILDDIR)/.doctrees/$3) \
  75         -D version=$(KERNELVERSION) -D release=$(KERNELRELEASE) \
  76         $(ALLSPHINXOPTS) \
  77         $(abspath $(srctree)/$(src)/$5) \
  78         $(abspath $(BUILDDIR)/$3/$4)
  79
  80 htmldocs:
  81         @$(srctree)/scripts/sphinx-pre-install --version-check
  82         @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,html,$(var),,$(var)))
  83
  84 linkcheckdocs:
  85         @$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,linkcheck,$(var),,$(var)))
  86
  87 latexdocs:
  88         @$(srctree)/scripts/sphinx-pre-install --version-check
  89         @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,latex,$(var),latex,$(var)))
  90
  91 ifeq ($(HAVE_PDFLATEX),0)
  92
  93 pdfdocs:
  94         $(warning The '$(PDFLATEX)' command was not found. Make sure you have it installed and in PATH to produce PDF output.)
  95         @echo "  SKIP    Sphinx $@ target."
  96
  97 else # HAVE_PDFLATEX
  98
  99 pdfdocs: latexdocs
 100         @$(srctree)/scripts/sphinx-pre-install --version-check
 101         $(foreach var,$(SPHINXDIRS), \
 102            $(MAKE) PDFLATEX="$(PDFLATEX)" LATEXOPTS="$(LATEXOPTS)" -C $(BUILDDIR)/$(var)/latex || exit; \
 103            mkdir -p $(BUILDDIR)/$(var)/pdf; \
 104            mv $(subst .tex,.pdf,$(wildcard $(BUILDDIR)/$(var)/latex/*.tex)) $(BUILDDIR)/$(var)/pdf/; \
 105         )
 106
 107 endif # HAVE_PDFLATEX
 108
 109 epubdocs:
 110         @$(srctree)/scripts/sphinx-pre-install --version-check
 111         @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,epub,$(var),epub,$(var)))
 112
 113 xmldocs:
 114         @$(srctree)/scripts/sphinx-pre-install --version-check
 115         @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,xml,$(var),xml,$(var)))
 116
 117 endif # HAVE_SPHINX
 118
 119 # The following targets are independent of HAVE_SPHINX, and the rules should
 120 # work or silently pass without Sphinx.
 121
 122 refcheckdocs:
 123         $(Q)cd $(srctree);scripts/documentation-file-ref-check
 124
 125 cleandocs:
 126         $(Q)rm -rf $(BUILDDIR)
 127         $(Q)$(MAKE) BUILDDIR=$(abspath $(BUILDDIR)) $(build)=Documentation/userspace-api/media clean
 128
 129 dochelp:
 130         @echo  ' Linux kernel internal documentation in different formats from ReST:'
 131         @echo  '  htmldocs        - HTML'
 132         @echo  '  latexdocs       - LaTeX'
 133         @echo  '  pdfdocs         - PDF'
 134         @echo  '  epubdocs        - EPUB'
 135         @echo  '  xmldocs         - XML'
 136         @echo  '  linkcheckdocs   - check for broken external links'
 137         @echo  '                    (will connect to external hosts)'
 138         @echo  '  refcheckdocs    - check for references to non-existing files under'
 139         @echo  '                    Documentation'
 140         @echo  '  cleandocs       - clean all generated files'
 141         @echo
 142         @echo  '  make SPHINXDIRS="s1 s2" [target] Generate only docs of folder s1, s2'
 143         @echo  '  valid values for SPHINXDIRS are: $(_SPHINXDIRS)'
 144         @echo
 145         @echo  '  make SPHINX_CONF={conf-file} [target] use *additional* sphinx-build'
 146         @echo  '  configuration. This is e.g. useful to build with nit-picking config.'
 147         @echo
 148         @echo  '  Default location for the generated documents is Documentation/output'