mirror of https://gitee.com/openkylin/linux.git
33 lines
1.1 KiB
Makefile
33 lines
1.1 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# Makefile for the Linux BPFILTER layer.
|
|
#
|
|
|
|
hostprogs-y := bpfilter_umh
|
|
bpfilter_umh-objs := main.o
|
|
HOSTCFLAGS += -I. -Itools/include/ -Itools/include/uapi
|
|
HOSTCC := $(CC)
|
|
|
|
ifeq ($(CONFIG_BPFILTER_UMH), y)
|
|
# builtin bpfilter_umh should be compiled with -static
|
|
# since rootfs isn't mounted at the time of __init
|
|
# function is called and do_execv won't find elf interpreter
|
|
HOSTLDFLAGS += -static
|
|
endif
|
|
|
|
# a bit of elf magic to convert bpfilter_umh binary into a binary blob
|
|
# inside bpfilter_umh.o elf file referenced by
|
|
# _binary_net_bpfilter_bpfilter_umh_start symbol
|
|
# which bpfilter_kern.c passes further into umh blob loader at run-time
|
|
quiet_cmd_copy_umh = GEN $@
|
|
cmd_copy_umh = echo ':' > $(obj)/.bpfilter_umh.o.cmd; \
|
|
$(OBJCOPY) -I binary -O `$(OBJDUMP) -f $<|grep format|cut -d' ' -f8` \
|
|
-B `$(OBJDUMP) -f $<|grep architecture|cut -d, -f1|cut -d' ' -f2` \
|
|
--rename-section .data=.init.rodata $< $@
|
|
|
|
$(obj)/bpfilter_umh.o: $(obj)/bpfilter_umh
|
|
$(call cmd,copy_umh)
|
|
|
|
obj-$(CONFIG_BPFILTER_UMH) += bpfilter.o
|
|
bpfilter-objs += bpfilter_kern.o bpfilter_umh.o
|