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CC	= gcc
COPTS	= -O2 -g
CFLAGS	= $(COPTS) -I.. -fPIC
LDFLAGS	= -shared
INSTALL	= install

INSTALL_PREFIX	= /usr
INCLUDE_DIR	= $(INSTALL_PREFIX)/include/pppd

VERSION		:= $(shell awk -F '"' '/VERSION/ { print $$2; }' $(INCLUDE_DIR)/patchlevel.h)
LIBDIR		= $(INSTALL_PREFIX)/lib/pppd/$(VERSION)

PLUGINS := zaptel.so

all:	$(PLUGINS)

%.so: %.c
ifeq (,$(VERSION))
	@echo "pppd version not found (in patchlevel.h)."
	@echo "Install ppp source/headers and/or point INCLUDE_DIR to them."
	exit 1
endif
	$(CC) -o $@ $(LDFLAGS) $(CFLAGS) $^

install: $(PLUGINS)
	$(INSTALL) -d $(DESTDIR)$(LIBDIR)
	$(INSTALL) -m 0644 $? $(DESTDIR)$(LIBDIR)

clean:
	rm -f *.o *.so *.a