CC	=  gcc
KSRC	=  /usr/src/linux
KCFG	=  $(KSRC)/.config
KVER	=  $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
CFLAGS	=  -Wall -Wstrict-prototypes -Winline -O2 -fomit-frame-pointer \
           #-DGR_VERTICAL=131 -DGR_LUCORNER=170 -DGR_LBCORNER=144

ifneq ($(wildcard $(KCFG)), $(KCFG))
all install modules_install ip_masq_icq.o:
NO_CONFIG = y
CONFIG_IP_MASQUERADE_MOD := $(shell grep -q '\<register_ip_masq_mod\>' /proc/ksyms && echo y)
else
include $(KCFG)
endif
CFLAGS += $(shell $(CC) -fno-strict-aliasing -S -o /dev/null -xc /dev/null >/dev/null 2>&1 && echo "-fno-strict-aliasing")
foo := $(shell egrep '^(VERSION|PATCHLEVEL|SUBLEVEL|EXTRAVERSION|ARCH) ' $(KSRC)/Makefile >Makefile.arch)
include Makefile.arch
foo := $(shell egrep -v '^	|^[^ 	:]*:' $(KSRC)/arch/$(ARCH)/Makefile >Makefile.arch)
include Makefile.arch

all: ip_masq_icq.o

install modules_install: ip_masq_icq.o
	mkdir -p $(INSTALL_MOD_PATH)/lib/modules/$(KVER)/ipv4
	cp -f $< $(INSTALL_MOD_PATH)/lib/modules/$(KVER)/ipv4
	depmod -a $(KVER)

ip_masq_icq.o: ip_masq_icq.c
ifneq ($(KVER), $(shell uname -r))
	@echo -e '\033[1;33mwarning\033[37m:\033[0m compiling for kernel version \033[1;36m$(KVER)\033[0m, while running \033[1;36m'`uname -r`'\033[0m\n' >&2
endif
ifdef NO_CONFIG
	@echo -e '\033[1;33mwarning\033[37m:\033[0m no \033[1;32m$(KCFG)\033[0m file, using \033[36m/proc\033[0m to guess kernel parameters.' >&2
ifneq ($(shell uname -m | sed s/i.86/ix86/), ix86)
	@echo -e '\t on non-x86, compilation may fail without \033[1;32m.config\033[0m file.\n' >&2
else
	@echo >&2
endif
endif
ifneq ($(CONFIG_IP_MASQUERADE_MOD), y)
	@echo -n 'Turn on ' >&2
ifneq ($(CONFIG_EXPERIMENTAL), y)
	@echo -ne '"Prompt for development and/or incomplete code/drivers" (the 1st menu)\nand ' >&2
endif
	@echo -e '"IP: masquerading special modules support" ("Networking options" menu)\nin the kernel config. \033[1;37;41m!!!! RTFM !!!!\033[0m' >&2
	@exit 1
endif
	$(CC) $(CFLAGS) -I$(KSRC)/include -c $< -o $@

clean:
	rm -fv Makefile.arch ip_masq_icq.o