##########################################################################
##         #   The Coq Proof Assistant / The Coq Development Team       ##
##  v      #   INRIA, CNRS and contributors - Copyright 1999-2018       ##
## <O___,, #       (see CREDITS file for the list of authors)           ##
##   \VV/  ###############################################################
##    //   #    This file is distributed under the terms of the         ##
##         #     GNU Lesser General Public License Version 2.1          ##
##         #     (see LICENSE file for the text of the license)         ##
##########################################################################

# Makefile for the Coq documentation

# Read doc/README.md to learn about the dependencies

# The main entry point :

documentation: doc-$(WITHDOC)  ## see $(WITHDOC) in config/Makefile
doc-all: doc
doc-no:

.PHONY: documentation doc-all doc-no

######################################################################
### Variables
######################################################################

LATEX:=latex
MAKEINDEX:=makeindex
PDFLATEX:=pdflatex
DVIPS:=dvips
HTMLSTYLE:=coqremote

# Sphinx-related variables
SPHINXENV:=COQBIN="$(CURDIR)/bin/"
SPHINXOPTS= -j4
SPHINXWARNERROR ?= 0
ifeq ($(SPHINXWARNERROR),1)
SPHINXOPTS += -W
endif
SPHINXBUILD= sphinx-build
SPHINXBUILDDIR= doc/sphinx/_build

# Internal variables.
ALLSPHINXOPTS= -d $(SPHINXBUILDDIR)/doctrees $(SPHINXOPTS)

DOCCOMMON:=doc/common/version.tex doc/common/title.tex doc/common/macros.tex

######################################################################
### General rules
######################################################################

.PHONY: doc doc-html doc-pdf doc-ps
.PHONY: stdlib full-stdlib sphinx

doc: refman stdlib

SPHINX_DEPS ?=
ifndef QUICK
SPHINX_DEPS := coq
endif

# refman-html and refman-latex
refman-%: $(SPHINX_DEPS)
	$(SHOW)'SPHINXBUILD doc/sphinx ($*)'
	$(HIDE)$(SPHINXENV) $(SPHINXBUILD) -b $* \
		$(ALLSPHINXOPTS) doc/sphinx $(SPHINXBUILDDIR)/$*

refman-pdf: refman-latex
	+$(MAKE) -C $(SPHINXBUILDDIR)/latex

refman: $(SPHINX_DEPS)
	+$(MAKE) refman-html
	+$(MAKE) refman-pdf

# compatibility alias
sphinx: refman-html

doc-html:\
  doc/stdlib/html/index.html refman-html

doc-pdf:\
  doc/stdlib/Library.pdf refman-pdf

doc-ps:\
  doc/stdlib/Library.ps

stdlib: \
  doc/stdlib/html/index.html doc/stdlib/Library.ps doc/stdlib/Library.pdf

full-stdlib: \
  doc/stdlib/html/index.html doc/stdlib/FullLibrary.ps doc/stdlib/FullLibrary.pdf

######################################################################
### Implicit rules
######################################################################

%.ps: %.dvi
	(cd `dirname $<`; $(DVIPS) -q -o `basename $@` `basename $<`)

######################################################################
# Common
######################################################################

### Version

doc/common/version.tex: config/Makefile
	printf '\\newcommand{\\coqversion}{$(VERSION)}' > doc/common/version.tex

######################################################################
# Standard library
######################################################################

### Standard library (browsable html format)

ifdef QUICK
doc/stdlib/html/genindex.html:
else
doc/stdlib/html/genindex.html: | $(COQDOC) $(ALLVO)
endif
	- rm -rf doc/stdlib/html
	$(MKDIR) doc/stdlib/html
	$(COQDOC) -q -d doc/stdlib/html --with-header doc/common/styles/html/$(HTMLSTYLE)/header.html --with-footer doc/common/styles/html/$(HTMLSTYLE)/footer.html --multi-index --html -g \
	  -R theories Coq -R plugins Coq $(VFILES)
	mv doc/stdlib/html/index.html doc/stdlib/html/genindex.html

doc/stdlib/index-list.html: doc/stdlib/index-list.html.template doc/stdlib/make-library-index
	./doc/stdlib/make-library-index doc/stdlib/index-list.html doc/stdlib/hidden-files

doc/stdlib/html/index.html: doc/stdlib/html/genindex.html doc/stdlib/index-list.html
	cat doc/common/styles/html/$(HTMLSTYLE)/header.html doc/stdlib/index-list.html > $@
	cat doc/common/styles/html/$(HTMLSTYLE)/footer.html >> $@

### Standard library (light version, full version is definitely too big)

ifdef QUICK
doc/stdlib/Library.coqdoc.tex:
else
doc/stdlib/Library.coqdoc.tex: | $(COQDOC) $(THEORIESLIGHTVO)
endif
	$(COQDOC) -q -boot --gallina --body-only --latex --stdout \
            -R theories Coq $(THEORIESLIGHTVO:.vo=.v) >> $@

doc/stdlib/Library.dvi: $(DOCCOMMON) doc/stdlib/Library.coqdoc.tex doc/stdlib/Library.tex
	(cd doc/stdlib;\
	$(LATEX) -interaction=batchmode Library;\
	$(LATEX) -interaction=batchmode Library > /dev/null;\
	../tools/show_latex_messages -no-overfull Library.log)

doc/stdlib/Library.pdf: $(DOCCOMMON) doc/stdlib/Library.coqdoc.tex doc/stdlib/Library.dvi
	(cd doc/stdlib;\
	$(PDFLATEX) -interaction=batchmode Library;\
	../tools/show_latex_messages -no-overfull Library.log)

### Standard library (full version if you're crazy enouth to try)

doc/stdlib/FullLibrary.tex: doc/stdlib/Library.tex
	sed -e 's/Library.coqdoc/FullLibrary.coqdoc/g;s/\\begin{document}/\\newcommand{\\textlambda}{\\ensuremath{\\lambda}}\\newcommand{\\textPi}{\\ensuremath{\\Pi}}\\begin{document}/' $< > $@

ifdef QUICK
doc/stdlib/FullLibrary.coqdoc.tex:
	$(COQDOC) -q -boot --gallina --body-only --latex --stdout --utf8 \
            -R theories Coq -R plugins Coq $(VFILES) > $@
	sed -i.tmp -e 's///g' $@ && rm $@.tmp
else
doc/stdlib/FullLibrary.coqdoc.tex: $(COQDOC) $(ALLVO)
	$(COQDOC) -q -boot --gallina --body-only --latex --stdout --utf8 \
            -R theories Coq -R plugins Coq $(VFILES) > $@
	sed -i.tmp -e 's///g' $@ && rm $@.tmp
endif

doc/stdlib/FullLibrary.dvi: $(DOCCOMMON) doc/stdlib/FullLibrary.coqdoc.tex doc/stdlib/FullLibrary.tex
	(cd doc/stdlib;\
	$(LATEX) -interaction=batchmode FullLibrary;\
	$(LATEX) -interaction=batchmode FullLibrary > /dev/null;\
	../tools/show_latex_messages -no-overfull FullLibrary.log)

doc/stdlib/FullLibrary.pdf: $(DOCCOMMON) doc/stdlib/FullLibrary.coqdoc.tex doc/stdlib/FullLibrary.dvi
	(cd doc/stdlib;\
	$(PDFLATEX) -interaction=batchmode FullLibrary;\
	../tools/show_latex_messages -no-overfull FullLibrary.log)

######################################################################
# Install all documentation files
######################################################################

.PHONY: install-doc install-doc-meta install-doc-html install-doc-printable \
	install-doc-sphinx install-doc-stdlib-html

install-doc: install-doc-meta install-doc-html install-doc-printable

install-doc-meta:
	$(MKDIR) $(FULLDOCDIR)
	$(INSTALLLIB) doc/LICENSE $(FULLDOCDIR)/LICENSE.doc

install-doc-html: install-doc-stdlib-html install-doc-sphinx

install-doc-stdlib-html:
	$(MKDIR) $(FULLDOCDIR)/html/stdlib
	$(INSTALLLIB) doc/stdlib/html/* $(FULLDOCDIR)/html/stdlib

install-doc-printable: 
	$(MKDIR) $(FULLDOCDIR)/ps $(FULLDOCDIR)/pdf
	$(INSTALLLIB) doc/stdlib/Library.pdf $(FULLDOCDIR)/pdf
	$(INSTALLLIB) doc/stdlib/Library.ps $(FULLDOCDIR)/ps

install-doc-sphinx:
	$(MKDIR) $(FULLDOCDIR)/sphinx
	(for f in `cd doc/sphinx/_build; find . -type f`; do \
		$(MKDIR) $$(dirname $(FULLDOCDIR)/sphinx/$$f);\
		$(INSTALLLIB) doc/sphinx/_build/$$f $(FULLDOCDIR)/sphinx/$$f;\
	done)

###########################################################################
# Documentation of the source code (using ocamldoc)
###########################################################################

OCAMLDOCDIR=dev/ocamldoc

DOCMLLIBS= $(CORECMA:.cma=_MLLIB_DEPENDENCIES) $(PLUGINSCMO:.cmo=_MLPACK_DEPENDENCIES)
DOCMLS=$(foreach lib,$(DOCMLLIBS),$(addsuffix .ml, $($(lib))))

DOCMLIS=$(wildcard $(addsuffix /*.mli, $(SRCDIRS)))

# Defining options to generate dependencies graphs
DOT=dot
ODOCDOTOPTS=-dot -dot-reduce

.PHONY: source-doc mli-doc ml-doc

source-doc: mli-doc $(OCAMLDOCDIR)/coq.pdf

OCAMLDOC_CAML_FLAGS=-rectypes -I +threads $(MLINCLUDES)

$(OCAMLDOCDIR)/coq.tex: $(DOCMLIS:.mli=.cmi)
	$(SHOW)'OCAMLDOC -latex -o $@'
	$(HIDE)$(OCAMLFIND) ocamldoc -latex $(OCAMLDOC_CAML_FLAGS) \
	$(DOCMLIS) -noheader -t "Coq mlis documentation" \
	-intro $(OCAMLDOCDIR)/docintro -o $@.tmp
	$(SHOW)'OCAMLDOC utf8 fix'
	$(HIDE)$(OCAMLDOCDIR)/fix-ocamldoc-utf8 $@.tmp
	$(HIDE)cat $(OCAMLDOCDIR)/header.tex $@.tmp > $@
	rm $@.tmp

mli-doc: $(DOCMLIS:.mli=.cmi)
	$(SHOW)'OCAMLDOC -html'
	$(HIDE)$(OCAMLFIND) ocamldoc -charset utf-8 -html $(OCAMLDOC_CAML_FLAGS) \
	$(DOCMLIS) -d $(OCAMLDOCDIR)/html -colorize-code \
	-t "Coq mlis documentation" -intro $(OCAMLDOCDIR)/docintro \
	-css-style style.css

ml-dot: $(MLFILES)
	$(OCAMLFIND) ocamldoc -dot -dot-reduce $(OCAMLDOC_CAML_FLAGS) \
	$(filter $(addsuffix /%.ml,$(CORESRCDIRS)),$(MLFILES)) -o $(OCAMLDOCDIR)/coq.dot

%_dep.png: %.dot
	$(DOT) -Tpng $< -o $@

%_types.dot: %.mli
	$(OCAMLFIND) ocamldoc $(OCAMLDOC_CAML_FLAGS) $(ODOCDOTOPTS) -dot-types -o $@ $<

OCAMLDOC_MLLIBD = $(OCAMLFIND) ocamldoc $(OCAMLDOC_CAML_FLAGS) $(ODOCDOTOPTS) -o $@ \
  $(foreach lib,$(|:.mllib.d=_MLLIB_DEPENDENCIES),$(addsuffix .ml,$($(lib))))

%.dot: | %.mllib.d
	$(OCAMLDOC_MLLIBD)

ml-doc: kernel/copcodes.cmi
	$(SHOW)'OCAMLDOC -html'
	$(HIDE)mkdir -p $(OCAMLDOCDIR)/html/implementation
	$(HIDE)$(OCAMLFIND) ocamldoc -charset utf-8 -html $(OCAMLDOC_CAML_FLAGS) \
	$(DOCMLS) -d $(OCAMLDOCDIR)/html/implementation -colorize-code \
	-t "Coq mls documentation" \
	-css-style ../style.css

parsing/parsing.dot : | parsing/parsing.mllib.d
	$(OCAMLDOC_MLLIBD)

grammar/grammar.dot : | grammar/grammar.mllib.d
	$(OCAMLDOC_MLLIBD)

tactics/tactics.dot: | tactics/tactics.mllib.d ltac/ltac.mllib.d
	$(OCAMLDOC_MLLIBD)

%.dot: %.mli
	$(OCAMLFIND) ocamldoc $(OCAMLDOC_CAML_FLAGS) $(ODOCDOTOPTS) -o $@ $<

$(OCAMLDOCDIR)/%.pdf: $(OCAMLDOCDIR)/%.tex
	$(SHOW)'PDFLATEX $*.tex'
	$(HIDE)(cd $(OCAMLDOCDIR) ; pdflatex -interaction=batchmode $*.tex && pdflatex -interaction=batchmode $*.tex)
	$(HIDE)(cd doc/tools/; ./show_latex_messages -no-overfull ../../$(OCAMLDOCDIR)/$*.log)

# For emacs:
# Local Variables:
# mode: makefile
# End: