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)/$3/_static/; \
  98         fi
  99
 100 YNL_INDEX:=$(srctree)/Documentation/networking/netlink_spec/index.rst
 101 YNL_RST_DIR:=$(srctree)/Documentation/networking/netlink_spec
 102 YNL_YAML_DIR:=$(srctree)/Documentation/netlink/specs
 103 YNL_TOOL:=$(srctree)/tools/net/ynl/ynl-gen-rst.py
 104
 105 YNL_RST_FILES_TMP := $(patsubst %.yaml,%.rst,$(wildcard $(YNL_YAML_DIR)/*.yaml))
 106 YNL_RST_FILES := $(patsubst $(YNL_YAML_DIR)%,$(YNL_RST_DIR)%, $(YNL_RST_FILES_TMP))
 107
 108 $(YNL_INDEX): $(YNL_RST_FILES)
 109         $(Q)$(YNL_TOOL) -o $@ -x
 110
 111 $(YNL_RST_DIR)/%.rst: $(YNL_YAML_DIR)/%.yaml $(YNL_TOOL)
 112         $(Q)$(YNL_TOOL) -i $< -o $@
 113
 114 htmldocs texinfodocs latexdocs epubdocs xmldocs: $(YNL_INDEX)
 115
 116 htmldocs:
 117         @$(srctree)/scripts/sphinx-pre-install --version-check
 118         @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,html,$(var),,$(var)))
 119
 120 # If Rust support is available and .config exists, add rustdoc generated contents.
 121 # If there are any, the errors from this make rustdoc will be displayed but
 122 # won't stop the execution of htmldocs
 123
 124 ifneq ($(wildcard $(srctree)/.config),)
 125 ifeq ($(CONFIG_RUST),y)
 126         $(Q)$(MAKE) rustdoc || true
 127 endif
 128 endif
 129
 130 texinfodocs:
 131         @$(srctree)/scripts/sphinx-pre-install --version-check
 132         @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,texinfo,$(var),texinfo,$(var)))
 133
 134 # Note: the 'info' Make target is generated by sphinx itself when
 135 # running the texinfodocs target define above.
 136 infodocs: texinfodocs
 137         $(MAKE) -C $(BUILDDIR)/texinfo info
 138
 139 linkcheckdocs:
 140         @$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,linkcheck,$(var),,$(var)))
 141
 142 latexdocs:
 143         @$(srctree)/scripts/sphinx-pre-install --version-check
 144         @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,latex,$(var),latex,$(var)))
 145
 146 ifeq ($(HAVE_PDFLATEX),0)
 147
 148 pdfdocs:
 149         $(warning The '$(PDFLATEX)' command was not found. Make sure you have it installed and in PATH to produce PDF output.)
 150         @echo "  SKIP    Sphinx $@ target."
 151
 152 else # HAVE_PDFLATEX
 153
 154 pdfdocs: latexdocs
 155         @$(srctree)/scripts/sphinx-pre-install --version-check
 156         $(foreach var,$(SPHINXDIRS), \
 157            $(MAKE) PDFLATEX="$(PDFLATEX)" LATEXOPTS="$(LATEXOPTS)" -C $(BUILDDIR)/$(var)/latex || exit; \
 158            mkdir -p $(BUILDDIR)/$(var)/pdf; \
 159            mv $(subst .tex,.pdf,$(wildcard $(BUILDDIR)/$(var)/latex/*.tex)) $(BUILDDIR)/$(var)/pdf/; \
 160         )
 161
 162 endif # HAVE_PDFLATEX
 163
 164 epubdocs:
 165         @$(srctree)/scripts/sphinx-pre-install --version-check
 166         @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,epub,$(var),epub,$(var)))
 167
 168 xmldocs:
 169         @$(srctree)/scripts/sphinx-pre-install --version-check
 170         @+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,xml,$(var),xml,$(var)))
 171
 172 endif # HAVE_SPHINX
 173
 174 # The following targets are independent of HAVE_SPHINX, and the rules should
 175 # work or silently pass without Sphinx.
 176
 177 refcheckdocs:
 178         $(Q)cd $(srctree);scripts/documentation-file-ref-check
 179
 180 cleandocs:
 181         $(Q)rm -f $(YNL_INDEX) $(YNL_RST_FILES)
 182         $(Q)rm -rf $(BUILDDIR)
 183         $(Q)$(MAKE) BUILDDIR=$(abspath $(BUILDDIR)) $(build)=Documentation/userspace-api/media clean
 184
 185 dochelp:
 186         @echo  ' Linux kernel internal documentation in different formats from ReST:'
 187         @echo  '  htmldocs        - HTML'
 188         @echo  '  texinfodocs     - Texinfo'
 189         @echo  '  infodocs        - Info'
 190         @echo  '  latexdocs       - LaTeX'
 191         @echo  '  pdfdocs         - PDF'
 192         @echo  '  epubdocs        - EPUB'
 193         @echo  '  xmldocs         - XML'
 194         @echo  '  linkcheckdocs   - check for broken external links'
 195         @echo  '                    (will connect to external hosts)'
 196         @echo  '  refcheckdocs    - check for references to non-existing files under'
 197         @echo  '                    Documentation'
 198         @echo  '  cleandocs       - clean all generated files'
 199         @echo
 200         @echo  '  make SPHINXDIRS="s1 s2" [target] Generate only docs of folder s1, s2'
 201         @echo  '  valid values for SPHINXDIRS are: $(_SPHINXDIRS)'
 202         @echo
 203         @echo  '  make SPHINX_CONF={conf-file} [target] use *additional* sphinx-build'
 204         @echo  '  configuration. This is e.g. useful to build with nit-picking config.'
 205         @echo
 206         @echo  '  make DOCS_THEME={sphinx-theme} selects a different Sphinx theme.'
 207         @echo
 208         @echo  '  make DOCS_CSS={a .css file} adds a DOCS_CSS override file for html/epub output.'
 209         @echo
 210         @echo  '  Default location for the generated documents is Documentation/output'