all: gluon-radv-filterd respondd.so

CPPFLAGS += -D_GNU_SOURCE

ifeq ($(origin PKG_CONFIG), undefined)
  PKG_CONFIG = pkg-config
  ifeq ($(shell which $(PKG_CONFIG) 2>/dev/null),)
    $(error $(PKG_CONFIG) not found)
  endif
endif

ifeq ($(origin LIBNL_CFLAGS) $(origin LIBNL_LDLIBS), undefined undefined)
  LIBNL_NAME ?= libnl-3.0
  ifeq ($(shell $(PKG_CONFIG) --modversion $(LIBNL_NAME) 2>/dev/null),)
    $(error No $(LIBNL_NAME) development libraries found!)
  endif
  LIBNL_CFLAGS += $(shell $(PKG_CONFIG) --cflags $(LIBNL_NAME))
  LIBNL_LDLIBS +=  $(shell $(PKG_CONFIG) --libs $(LIBNL_NAME))
endif
CFLAGS += $(LIBNL_CFLAGS)
LDLIBS += $(LIBNL_LDLIBS)

ifeq ($(origin LIBNL_GENL_CFLAGS) $(origin LIBNL_GENL_LDLIBS), undefined undefined)
  LIBNL_GENL_NAME ?= libnl-genl-3.0
  ifeq ($(shell $(PKG_CONFIG) --modversion $(LIBNL_GENL_NAME) 2>/dev/null),)
    $(error No $(LIBNL_GENL_NAME) development libraries found!)
  endif
  LIBNL_GENL_CFLAGS += $(shell $(PKG_CONFIG) --cflags $(LIBNL_GENL_NAME))
  LIBNL_GENL_LDLIBS += $(shell $(PKG_CONFIG) --libs $(LIBNL_GENL_NAME))
endif
CFLAGS += $(LIBNL_GENL_CFLAGS)
LDLIBS += $(LIBNL_GENL_LDLIBS)

ifeq ($(origin LIBBATADV_CFLAGS) $(origin LIBBATADV_LDLIBS), undefined undefined)
  LIBBATADV_NAME ?= libbatadv
  ifeq ($(shell $(PKG_CONFIG) --modversion $(LIBBATADV_NAME) 2>/dev/null),)
    $(error No $(LIBBATADV_NAME) development libraries found!)
  endif
  LIBBATADV_CFLAGS += $(shell $(PKG_CONFIG) --cflags $(LIBBATADV_NAME))
  LIBBATADV_LDLIBS += $(shell $(PKG_CONFIG) --libs $(LIBBATADV_NAME))
endif
CFLAGS += $(LIBBATADV_CFLAGS)
LDLIBS += $(LIBBATADV_LDLIBS)

gluon-radv-filterd: gluon-radv-filterd.c
	$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -Wall -o $@ $^ $(LDLIBS)

respondd.so: respondd.c
	$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -shared -fPIC -o $@ $^ $(LDLIBS) -lgluonutil