CC?=gcc
LDFLAGS=-lm
ifeq ($(CC), gcc)
  SPECIFIC_CFLAGS=-fstrength-reduce
else
  SPECIFIC_CFLAGS=
endif
INCLUDE_PATHS=$(shell libpng-config --I_opts)
CFLAGS=-O3 -Wall -Wuninitialized \
       -fomit-frame-pointer -funroll-loops \
			 $(SPECIFIC_CFLAGS) \
	     -DNODEBUG $(INCLUDE_PATHS)

VERSION=$(shell git describe)
ifdef TRAVIS_OS_NAME
  OS=$(TRAVIS_OS_NAME)
else
  OS=$(shell uname -s)
endif
ARCH=$(shell uname -m)
ARCHIVE_PATH=optar-$(VERSION)-$(OS)-$(ARCH).tar.gz
BINARIES=optar unoptar
EXECUTABLES=$(BINARIES) pgm2ps

ARCHIVE_PATH_TAR=$(ARCHIVE_PATH).tar
ARCHIVE_PATH_PDF=$(ARCHIVE_PATH_TAR).pdf

all: optar unoptar

install:
	install optar /usr/local/bin/
	install unoptar /usr/local/bin
	install pgm2ps /usr/local/bin

uninstall:
	rm /usr/local/bin/optar
	rm /usr/local/bin/unoptar
	rm /usr/local/bin/pgm2ps

clean:
	rm -f $(BINARIES) optar-*.tar.gz golay_codes.c *.o
	rm -f $(ARCHIVE_PATH_PDF) $(ARCHIVE_PATH_TAR)
	rm -f *.pgm *.ps

common.o: common.c optar.h
	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<

parity.o: parity.c
	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<

optar.o: optar.c optar.h font.h parity.h
	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<

golay_codes.o: golay_codes.c
	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<

golay.o: golay.c parity.h
	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<

unoptar.o: unoptar.c optar.h parity.h
	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<

optar: optar.o common.o golay_codes.o parity.o
	$(CC) $(LDFLAGS) -o $@ $^

golay_codes.c: golay
	./$< > $@

golay: golay.o parity.o
	$(CC) $(LDFLAGS) -o $@ $^

unoptar: unoptar.o common.o golay_codes.o parity.o
	$(CC) -o $@ -L/usr/local/lib $^ -lm -lpng -lz

archive: $(ARCHIVE_PATH)

$(ARCHIVE_PATH): $(EXECUTABLES) COPYING README.md
	tar czvf $@ $^

archive_pdf: $(ARCHIVE_PATH_PDF)

$(ARCHIVE_PATH_PDF): $(ARCHIVE_PATH) optar
#This is necessary because tar can be 0-padded and gzip cannot
	tar cvf $(ARCHIVE_PATH_TAR) $<
	./optar $(ARCHIVE_PATH_TAR) $(ARCHIVE_PATH_TAR)
	./pgm2ps *.pgm
	convert -density 600x600 -quality 100 *.ps $@