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 $(srctree)/scripts/documentation-file-ref-check --warn)
  11 endif
  12
  13 # Check for broken ABI files
  14 ifeq ($(CONFIG_WARN_ABI_ERRORS),y)
  15 $(shell $(srctree)/scripts/get_abi.pl validate --dir $(srctree)/Documentation/ABI)
  16 endif
  17
  18 # You can set these variables from the command line.
  19 SPHINXBUILD   = sphinx-build
  20 SPHINXOPTS    =
  21 SPHINXDIRS    = .
  22 DOCS_THEME    =
  23 DOCS_CSS      =
  24 _SPHINXDIRS   = $(sort $(patsubst $(srctree)/Documentation/%/index.rst,%,$(wildcard $(srctree)/Documentation/*/index.rst)))
  25 SPHINX_CONF   = conf.py
  26 PAPER         =
  27 BUILDDIR      = $(obj)/output
  28 PDFLATEX      = xelatex
  29 LATEXOPTS     = -interaction=batchmode -no-shell-escape
  30
  31 ifeq ($(findstring 1, $(KBUILD_VERBOSE)),)
  32 SPHINXOPTS    += "-q"
  33 endif
  34
  35 # User-friendly check for sphinx-build
  36 HAVE_SPHINX := $(shell if which $(SPHINXBUILD) >/dev/null 2>&1; then echo 1; else echo 0; fi)
  37
  38 ifeq ($(HAVE_SPHINX),0)
  39
  40 .DEFAULT:
  41         $(warning The '$(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 '$(SPHINXBUILD)' executable.)
  42         @echo
  43         @$(srctree)/scripts/sphinx-pre-install
  44         @echo "  SKIP    Sphinx $@ target."
  45
  46 else # HAVE_SPHINX
  47
  48 # User-friendly check for pdflatex and latexmk
  49 HAVE_PDFLATEX := $(shell if which $(PDFLATEX) >/dev/null 2>&1; then echo 1; else echo 0; fi)
  50 HAVE_LATEXMK := $(shell if which latexmk >/dev/null 2>&1; then echo 1; else echo 0; fi)
  51
  52 ifeq ($(HAVE_LATEXMK),1)
  53         PDFLATEX := latexmk -$(PDFLATEX)
  54 endif #HAVE_LATEXMK
  55
  56 # Internal variables.
  57 PAPEROPT_a4     = -D latex_paper_size=a4
  58 PAPEROPT_letter = -D latex_paper_size=letter
  59 KERNELDOC       = $(srctree)/scripts/kernel-doc
  60 KERNELDOC_CONF  = -D kerneldoc_srctree=$(srctree) -D kerneldoc_bin=$(KERNELDOC)
  61 ALLSPHINXOPTS   =  $(KERNELDOC_CONF) $(PAPEROPT_$(PAPER)) $(SPHINXOPTS)
  62 ifneq ($(wildcard $(srctree)/.config),)
  63 ifeq ($(CONFIG_RUST),y)
  64         # Let Sphinx know we will include rustdoc
  65         ALLSPHINXOPTS   +=  -t rustdoc
  66 endif
  67 endif
  68 # the i18n builder cannot share the environment and doctrees with the others
  69 I18NSPHINXOPTS  = $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
  70
  71 # commands; the 'cmd' from scripts/Kbuild.include is not *loopable*
  72 loop_cmd = $(echo-cmd) $(cmd_$(1)) || exit;
  73
  74 # $2 sphinx builder e.g. "html"
  75 # $3 name of the build subfolder / e.g. "userspace-api/media", used as:
  76 #    * dest folder relative to $(BUILDDIR) and
  77 #    * cache folder relative to $(BUILDDIR)/.doctrees
  78 # $4 dest subfolder e.g. "man" for man pages at userspace-api/media/man
  79 # $5 reST source folder relative to $(srctree)/$(src),
  80 #    e.g. "userspace-api/media" for the linux-tv book-set at ./Documentation/userspace-api/media
  81
  82 quiet_cmd_sphinx = SPHINX  $@ --> file://$(abspath $(BUILDDIR)/$3/$4)
  83       cmd_sphinx = $(MAKE) BUILDDIR=$(abspath $(BUILDDIR)) $(build)=Documentation/userspace-api/media $2 && \
  84         PYTHONDONTWRITEBYTECODE=1 \
  85         BUILDDIR=$(abspath $(BUILDDIR)) SPHINX_CONF=$(abspath $(srctree)/$(src)/$5/$(SPHINX_CONF)) \
  86         $(PYTHON3) $(srctree)/scripts/jobserver-exec \
  87         $(CONFIG_SHELL) $(srctree)/Documentation/sphinx/parallel-wrapper.sh \
  88         $(SPHINXBUILD) \
  89         -b $2 \
  90         -c $(abspath $(srctree)/$(src)) \
  91         -d $(abspath $(BUILDDIR)/.doctrees/$3) \
  92         -D version=$(KERNELVERSION) -D release=$(KERNELRELEASE) \
  93         $(ALLSPHINXOPTS) \
  94         $(abspath $(srctree)/$(src)/$5) \
  95         $(abspath $(BUILDDIR)/$3/$4) && \
  96         if [ "x$(DOCS_CSS)" != "x" ]; then \
  97                 cp $(if $(patsubst /%,,$(DOCS_CSS)),$(abspath $(srctree)/$(DOCS_CSS)),$(DOCS_CSS)) $(BUILDDIR)/$3/_static/; \
  98         fi
  99
 100 htmldocs:
 101         @$(srctree)/scripts/sphinx-pre-install --version-check
 102         @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,html,$(var),,$(var)))
 103
 104 # If Rust support is available and .config exists, add rustdoc generated contents.
 105 # If there are any, the errors from this make rustdoc will be displayed but
 106 # won't stop the execution of htmldocs
 107
 108 ifneq ($(wildcard $(srctree)/.config),)
 109 ifeq ($(CONFIG_RUST),y)
 110         $(Q)$(MAKE) rustdoc || true
 111 endif
 112 endif
 113
 114 texinfodocs:
 115         @$(srctree)/scripts/sphinx-pre-install --version-check
 116         @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,texinfo,$(var),texinfo,$(var)))
 117
 118 # Note: the 'info' Make target is generated by sphinx itself when
 119 # running the texinfodocs target define above.
 120 infodocs: texinfodocs
 121         $(MAKE) -C $(BUILDDIR)/texinfo info
 122
 123 linkcheckdocs:
 124         @$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,linkcheck,$(var),,$(var)))
 125
 126 latexdocs:
 127         @$(srctree)/scripts/sphinx-pre-install --version-check
 128         @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,latex,$(var),latex,$(var)))
 129
 130 ifeq ($(HAVE_PDFLATEX),0)
 131
 132 pdfdocs:
 133         $(warning The '$(PDFLATEX)' command was not found. Make sure you have it installed and in PATH to produce PDF output.)
 134         @echo "  SKIP    Sphinx $@ target."
 135
 136 else # HAVE_PDFLATEX
 137
 138 pdfdocs: latexdocs
 139         @$(srctree)/scripts/sphinx-pre-install --version-check
 140         $(foreach var,$(SPHINXDIRS), \
 141            $(MAKE) PDFLATEX="$(PDFLATEX)" LATEXOPTS="$(LATEXOPTS)" -C $(BUILDDIR)/$(var)/latex || exit; \
 142            mkdir -p $(BUILDDIR)/$(var)/pdf; \
 143            mv $(subst .tex,.pdf,$(wildcard $(BUILDDIR)/$(var)/latex/*.tex)) $(BUILDDIR)/$(var)/pdf/; \
 144         )
 145
 146 endif # HAVE_PDFLATEX
 147
 148 epubdocs:
 149         @$(srctree)/scripts/sphinx-pre-install --version-check
 150         @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,epub,$(var),epub,$(var)))
 151
 152 xmldocs:
 153         @$(srctree)/scripts/sphinx-pre-install --version-check
 154         @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,xml,$(var),xml,$(var)))
 155
 156 endif # HAVE_SPHINX
 157
 158 # The following targets are independent of HAVE_SPHINX, and the rules should
 159 # work or silently pass without Sphinx.
 160
 161 refcheckdocs:
 162         $(Q)cd $(srctree);scripts/documentation-file-ref-check
 163
 164 cleandocs:
 165         $(Q)rm -rf $(BUILDDIR)
 166         $(Q)$(MAKE) BUILDDIR=$(abspath $(BUILDDIR)) $(build)=Documentation/userspace-api/media clean
 167
 168 dochelp:
 169         @echo  ' Linux kernel internal documentation in different formats from ReST:'
 170         @echo  '  htmldocs        - HTML'
 171         @echo  '  texinfodocs     - Texinfo'
 172         @echo  '  infodocs        - Info'
 173         @echo  '  latexdocs       - LaTeX'
 174         @echo  '  pdfdocs         - PDF'
 175         @echo  '  epubdocs        - EPUB'
 176         @echo  '  xmldocs         - XML'
 177         @echo  '  linkcheckdocs   - check for broken external links'
 178         @echo  '                    (will connect to external hosts)'
 179         @echo  '  refcheckdocs    - check for references to non-existing files under'
 180         @echo  '                    Documentation'
 181         @echo  '  cleandocs       - clean all generated files'
 182         @echo
 183         @echo  '  make SPHINXDIRS="s1 s2" [target] Generate only docs of folder s1, s2'
 184         @echo  '  valid values for SPHINXDIRS are: $(_SPHINXDIRS)'
 185         @echo
 186         @echo  '  make SPHINX_CONF={conf-file} [target] use *additional* sphinx-build'
 187         @echo  '  configuration. This is e.g. useful to build with nit-picking config.'
 188         @echo
 189         @echo  '  make DOCS_THEME={sphinx-theme} selects a different Sphinx theme.'
 190         @echo
 191         @echo  '  make DOCS_CSS={a .css file} adds a DOCS_CSS override file for html/epub output.'
 192         @echo
 193         @echo  '  Default location for the generated documents is Documentation/output'