O := .tmp

R2B := rst2beamer.py
PYTHON := python
R2BTHEME := Madrid
R2BFLAGS :=  --halt=2 --lang es --codeblocks-use-pygments \
	--input-encoding=utf-8 --output-encoding=utf-8 \
	--overlaybullets= \
	--theme $(R2BTHEME)
R2BFILTER := sed '/\\usepackage\[scaled=\.90\]{helvet}/d; \
	s/\\usepackage\[utf8\]{inputenc}/\\usepackage[utf8x]{inputenc}/; \
	s/\\institute{\(.*\)}/\\institute[LUGFI]{\1}/m'

PDFLATEX := pdflatex
PDFLATEXFLAGS := -halt-on-error -file-line-error

# Verbosity flag (empty show nice messages, non-empty use make messages)
# When used internal, $V expand to @ is nice messages should be printed, this
# way it's easy to add $V in front of commands that should be silenced when
# displaying the nice messages.
override V := $(if $V,,@)
# honour make -s flag
override V := $(if $(findstring s,$(MAKEFLAGS)),,$V)

targets := presentacion.pdf

.PHONY: all
all: $(targets)

presentacion.pdf: $O/diff.pdf $O/merge.pdf

%.pdf: $O/%.tex
	$(if $V,@echo "$(PDFLATEX) $< > $@")
	$V cd $O && $(PDFLATEX) $(PDFLATEXFLAGS) $(<F) $(if $V,> $@.log)
	$V cd $O && $(PDFLATEX) $(PDFLATEXFLAGS) $(<F) $(if $V,>> $@.log)
	$V mv $O/$@ $@

$O/%.tex: %.rst $(R2B) Makefile
	$(if $V,@echo "$(R2B) $< > $@")
	$V $(PYTHON) $(R2B) $(R2BFLAGS) $< | $(R2BFILTER) > $@

$O/%.pdf: %.pdf
	cp $< $@

.PHONY: clean
clean:
	$(RM) -r $O

.PHONY: clean-all
clean-all: clean
	$(RM) $(targets)

__dummy := $(shell mkdir -p $O/img)