summaryrefslogtreecommitdiffstats
path: root/Documentation/Makefile
blob: e145e4db508bc6a45ed598f0cb3564893d0bc026 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
# -*- makefile -*-
# Makefile for Sphinx documentation
#

subdir-y := devicetree/bindings/

# Check for broken documentation file references
ifeq ($(CONFIG_WARN_MISSING_DOCUMENTS),y)
$(shell $(srctree)/scripts/documentation-file-ref-check --warn)
endif

# You can set these variables from the command line.
SPHINXBUILD   = sphinx-build
SPHINXOPTS    =
SPHINXDIRS    = .
_SPHINXDIRS   = $(patsubst $(srctree)/Documentation/%/conf.py,%,$(wildcard $(srctree)/Documentation/*/conf.py))
SPHINX_CONF   = conf.py
PAPER         =
BUILDDIR      = $(obj)/output
PDFLATEX      = xelatex
LATEXOPTS     = -interaction=batchmode

# User-friendly check for sphinx-build
HAVE_SPHINX := $(shell if which $(SPHINXBUILD) >/dev/null 2>&1; then echo 1; else echo 0; fi)

ifeq ($(HAVE_SPHINX),0)

.DEFAULT:
	$(warning The '$(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 '$(SPHINXBUILD)' executable.)
	@echo
	@$(srctree)/scripts/sphinx-pre-install
	@echo "  SKIP    Sphinx $@ target."

else # HAVE_SPHINX

export SPHINXOPTS = $(shell perl -e 'open IN,"sphinx-build --version 2>&1 |"; while (<IN>) { if (m/([\d\.]+)/) { print "-jauto" if ($$1 >= "1.7") } ;} close IN')

# User-friendly check for pdflatex and latexmk
HAVE_PDFLATEX := $(shell if which $(PDFLATEX) >/dev/null 2>&1; then echo 1; else echo 0; fi)
HAVE_LATEXMK := $(shell if which latexmk >/dev/null 2>&1; then echo 1; else echo 0; fi)

ifeq ($(HAVE_LATEXMK),1)
	PDFLATEX := latexmk -$(PDFLATEX)
endif #HAVE_LATEXMK

# Internal variables.
PAPEROPT_a4     = -D latex_paper_size=a4
PAPEROPT_letter = -D latex_paper_size=letter
KERNELDOC       = $(srctree)/scripts/kernel-doc
KERNELDOC_CONF  = -D kerneldoc_srctree=$(srctree) -D kerneldoc_bin=$(KERNELDOC)
ALLSPHINXOPTS   =  $(KERNELDOC_CONF) $(PAPEROPT_$(PAPER)) $(SPHINXOPTS)
# the i18n builder cannot share the environment and doctrees with the others
I18NSPHINXOPTS  = $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .

# commands; the 'cmd' from scripts/Kbuild.include is not *loopable*
loop_cmd = $(echo-cmd) $(cmd_$(1)) || exit;

# $2 sphinx builder e.g. "html"
# $3 name of the build subfolder / e.g. "media", used as:
#    * dest folder relative to $(BUILDDIR) and
#    * cache folder relative to $(BUILDDIR)/.doctrees
# $4 dest subfolder e.g. "man" for man pages at media/man
# $5 reST source folder relative to $(srctree)/$(src),
#    e.g. "media" for the linux-tv book-set at ./Documentation/media

quiet_cmd_sphinx = SPHINX  $@ --> file://$(abspath $(BUILDDIR)/$3/$4)
      cmd_sphinx = $(MAKE) BUILDDIR=$(abspath $(BUILDDIR)) $(build)=Documentation/media $2 && \
	PYTHONDONTWRITEBYTECODE=1 \
	BUILDDIR=$(abspath $(BUILDDIR)) SPHINX_CONF=$(abspath $(srctree)/$(src)/$5/$(SPHINX_CONF)) \
	$(SPHINXBUILD) \
	-b $2 \
	-c $(abspath $(srctree)/$(src)) \
	-d $(abspath $(BUILDDIR)/.doctrees/$3) \
	-D version=$(KERNELVERSION) -D release=$(KERNELRELEASE) \
	$(ALLSPHINXOPTS) \
	$(abspath $(srctree)/$(src)/$5) \
	$(abspath $(BUILDDIR)/$3/$4)

htmldocs:
	@$(srctree)/scripts/sphinx-pre-install --version-check
	@+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,html,$(var),,$(var)))

linkcheckdocs:
	@$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,linkcheck,$(var),,$(var)))

latexdocs:
	@$(srctree)/scripts/sphinx-pre-install --version-check
	@+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,latex,$(var),latex,$(var)))

ifeq ($(HAVE_PDFLATEX),0)

pdfdocs:
	$(warning The '$(PDFLATEX)' command was not found. Make sure you have it installed and in PATH to produce PDF output.)
	@echo "  SKIP    Sphinx $@ target."

else # HAVE_PDFLATEX

pdfdocs: latexdocs
	@$(srctree)/scripts/sphinx-pre-install --version-check
	$(foreach var,$(SPHINXDIRS), $(MAKE) PDFLATEX="$(PDFLATEX)" LATEXOPTS="$(LATEXOPTS)" -C $(BUILDDIR)/$(var)/latex || exit;)

endif # HAVE_PDFLATEX

epubdocs:
	@$(srctree)/scripts/sphinx-pre-install --version-check
	@+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,epub,$(var),epub,$(var)))

xmldocs:
	@$(srctree)/scripts/sphinx-pre-install --version-check
	@+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,xml,$(var),xml,$(var)))

endif # HAVE_SPHINX

# The following targets are independent of HAVE_SPHINX, and the rules should
# work or silently pass without Sphinx.

refcheckdocs:
	$(Q)cd $(srctree);scripts/documentation-file-ref-check

cleandocs:
	$(Q)rm -rf $(BUILDDIR)
	$(Q)$(MAKE) BUILDDIR=$(abspath $(BUILDDIR)) $(build)=Documentation/media clean

dochelp:
	@echo  ' Linux kernel internal documentation in different formats from ReST:'
	@echo  '  htmldocs        - HTML'
	@echo  '  latexdocs       - LaTeX'
	@echo  '  pdfdocs         - PDF'
	@echo  '  epubdocs        - EPUB'
	@echo  '  xmldocs         - XML'
	@echo  '  linkcheckdocs   - check for broken external links (will connect to external hosts)'
	@echo  '  refcheckdocs    - check for references to non-existing files under Documentation'
	@echo  '  cleandocs       - clean all generated files'
	@echo
	@echo  '  make SPHINXDIRS="s1 s2" [target] Generate only docs of folder s1, s2'
	@echo  '  valid values for SPHINXDIRS are: $(_SPHINXDIRS)'
	@echo
	@echo  '  make SPHINX_CONF={conf-file} [target] use *additional* sphinx-build'
	@echo  '  configuration. This is e.g. useful to build with nit-picking config.'
	@echo
	@echo  '  Default location for the generated documents is Documentation/output'