# Copyright (c) 2008-2010 Alexandre Dupas <alexandre.dupas@gmail.com>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any later
# version.
# 
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
# for more details.
# 
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#

SONGBOOKS := $(wildcard *.sb)
TARGETS = $(SONGBOOKS:%.sb=%)

PDF = $(TARGETS:%=%.pdf)
PSF = $(TARGETS:%=%.ps.gz)

CHORDS = chords.tex
CHORDS_SRC = $(shell ls songs/*/*.sg)

PRINT=printf "%s\n"
PRINTTAB=printf "\t%s\n"

MAKE_SONGBOOK=./songbook.py
MAKE_INDEX=./songbook-makeindex.py
MAKE_CHORDS=./utils/songbook-gtab.py

ifeq ($(shell which lilypond),)
  LILYPOND=$(ECHO) "** lilypond not found" >&2 ; $(ECHO) lilypond
  LILYFILE=''
else
  LILYPOND=lilypond
  LILY_SRC=$(wildcard lilypond/*.ly)
  LILYFILE=$(LILY_SRC:%.ly=%.pdf)
endif

############################################################
### Targets

default: songbook.pdf

all: $(PDF)

ps: $(PSF)
	gv $<

pdf: $(PDF)
	xpdf $<

lilypond: $(LILYFILE)

clean:
	@rm -f $(TARGETS:%=%.d)   $(TARGETS:%=%.tex) $(TARGETS:%=%.aux) \
	       $(TARGETS:%=%.toc) $(TARGETS:%=%.out) $(TARGETS:%=%.log) \
	       $(TARGETS:%=%.nav) $(TARGETS:%=%.snm) $(TARGETS:%=%.dvi)
	@rm -f *.sbx *.sxd

cleanall: clean
	@rm -f $(PDF) $(PSF)
	@rm -f $(LILYFILE)

depend:

############################################################

$(PSF): LATEX = latex
$(PSF): %.ps.gz: %.ps
	gzip -f $<

%.ps: %.dvi
	dvips -o $@ $<

%.dvi: %.tex %.aux
	$(LATEX) $<

$(PDF): LATEX = pdflatex -halt-on-error
$(PDF): %.pdf: %.tex %.aux

%.aux: %.tex
	$(LATEX) $< 

%.sbx: %.sxd
	$(MAKE_INDEX) $< > $@

%.tex: %.sb
	$(MAKE_SONGBOOK) -s $< -o $@

%.d: %.sb
	$(MAKE_SONGBOOK) -s $< -d -o $@

include $(SONGBOOKS:%.sb=%.d)

%.pdf: %.ly
	@$(LILYPOND) --output=$(@:%.pdf=%) $<
	@rm $(@:%.pdf=%.ps)

$(CHORDS): $(CHORDS_SRC)
	$(MAKE_CHORDS) -o $@