DESTDIR ?=
PREFIX ?= /usr/local
EXEC_PREFIX ?= $(PREFIX)
BINDIR ?= $(DESTDIR)$(EXEC_PREFIX)/bin
LIBEXECDIR ?= $(DESTDIR)$(EXEC_PREFIX)/libexec

CFLAGS += -Os -g -Wall -Wextra -pedantic
CPPFLAGS +=
LDFLAGS +=

SED ?= sed

BINS := ethertype-dump arp-request ethermess
LIBEXECS := ethermess-backend

.SUFFIXES:
.SUFFIXES: .c .o

.PHONY: all install uninstall clean distclean

all: $(BINS) $(LIBEXECS)

ethertype-dump: ethertype-dump.o
	$(CC) -o $@ $< $(LDFLAGS)

arp-request: arp-request.o
	$(CC) -o $@ $< $(LDFLAGS)

ethermess: ethermess.py
	# I'm not sure you can make this work 100% with traditional make
	#$(SED) "2s/__LIBEXECDIR__/'`printf "%s" "$(LIBEXECDIR)" | sed "s,\\\\\\\\,\\\\\\\\\\\\\\\\,g;s,/,\\\\\\\\/,g;s,"'"'",\\\\\\\\"'"'",g"`'/" < $< > $@
	$(SED) "2s/__LIBEXECDIR__/'.'/" < $< > $@ #debg
	chmod +x $@

ethermess-backend: ethermess-backend.o
	$(CC) -o $@ $< $(LDFLAGS)

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

install: $(BINS) $(LIBEXECS)
	mkdir -p $(BINDIR)
	mkdir -p $(LIBEXECDIR)
	install $(BINS) $(BINDIR)
	install $(LIBEXECS) $(LIBEXECDIR)

uninstall:
	cd $(BINDIR) && rm $(BINS)
	cs $(LIBEXECDIR) && rm $(LIBEXECS)

clean:
	rm -f $(BINS) $(LIBEXECS) *.o

distclean: clean