.PRECIOUS: %.pdf

GHC = ghc
CC = ghc
GHCFLAGS = -Wall -Werror -cpp -Isrc -odir build -hidir build -ibuild \
           -fno-warn-name-shadowing \
           -main-is Sudoku

ifdef OPTIMIZE
GHCFLAGS += -O2 -funbox-strict-fields -funfolding-use-threshold12 
CFLAGS += -O2
endif

sources = $(shell find src -name '*.lhs')
docs = Sudoku.pdf

all: build/Sudoku

build/Sudoku: build/Sudoku.o
	$(GHC) $(GHCFLAGS) -o $@ $^

build/%.o: src/%.lhs
	@mkdir -p `dirname $@`
	@rm -f build/$*.lhs && cp src/$*.lhs build/$*.lhs
	@# So ghci can locate .lhs and .o in same dir, I should just fix ghci
	@chmod 400 build/$*.lhs 
	$(GHC) $(GHCFLAGS) -c -o $@  $<

build/%.hi: build/%.o; @true

%.pdf: src/%.lhs lhs.sty
	TEXINPUTS="src:"; export TEXINPUTS; \
		pdflatex $< && \
		pdflatex $<
	rm -f "$*.log" "$*.aux" "$*.toc" "$*.bbl"

clean:
	rm -rf build/*

.depend: $(sources)
	@echo Rebuilding dependencies...
	@$(GHC) $(GHCFLAGS) -isrc -M -optdep-f -optdep$@ $^

pdf: pdf_Sudoku
pdf_%: %.pdf
	@if [ "`uname -s`" = "Darwin" ]; then open $^; \
	else xpdf $^; \
	fi

push: $(docs)
	darcs push charger.brianweb.net:/home/darcs/sudoku
	scp $(docs) charger.brianweb.net:/home/darcs/sudoku

test: build/Sudoku
	time build/Sudoku

include .depend