1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 2
3 LIBBPF_INCLUDE = $(srctree)/tools/lib !! 3 LIBBPF_SRCS = $(srctree)/tools/lib/bpf/
>> 4 LIBBPF_OUT = $(abspath $(obj))/libbpf
>> 5 LIBBPF_A = $(LIBBPF_OUT)/libbpf.a
>> 6 LIBBPF_DESTDIR = $(LIBBPF_OUT)
>> 7 LIBBPF_INCLUDE = $(LIBBPF_DESTDIR)/include
>> 8
>> 9 # Although not in use by libbpf's Makefile, set $(O) so that the "dummy" test
>> 10 # in tools/scripts/Makefile.include always succeeds when building the kernel
>> 11 # with $(O) pointing to a relative path, as in "make O=build bindeb-pkg".
>> 12 $(LIBBPF_A): | $(LIBBPF_OUT)
>> 13 $(Q)$(MAKE) -C $(LIBBPF_SRCS) O=$(LIBBPF_OUT)/ OUTPUT=$(LIBBPF_OUT)/ \
>> 14 DESTDIR=$(LIBBPF_DESTDIR) prefix= \
>> 15 $(LIBBPF_OUT)/libbpf.a install_headers
>> 16
>> 17 libbpf_hdrs: $(LIBBPF_A)
>> 18
>> 19 .PHONY: libbpf_hdrs
>> 20
>> 21 $(LIBBPF_OUT):
>> 22 $(call msg,MKDIR,$@)
>> 23 $(Q)mkdir -p $@
>> 24
>> 25 userccflags += -I $(srctree)/tools/include/ -I $(srctree)/tools/include/uapi \
>> 26 -I $(LIBBPF_INCLUDE) -Wno-unused-result
>> 27
>> 28 userprogs := bpf_preload_umd
>> 29
>> 30 clean-files := libbpf/
>> 31
>> 32 $(obj)/iterators/iterators.o: | libbpf_hdrs
>> 33
>> 34 bpf_preload_umd-objs := iterators/iterators.o
>> 35 bpf_preload_umd-userldlibs := $(LIBBPF_A) -lelf -lz
>> 36
>> 37 $(obj)/bpf_preload_umd: $(LIBBPF_A)
>> 38
>> 39 $(obj)/bpf_preload_umd_blob.o: $(obj)/bpf_preload_umd
4 40
5 obj-$(CONFIG_BPF_PRELOAD_UMD) += bpf_preload.o 41 obj-$(CONFIG_BPF_PRELOAD_UMD) += bpf_preload.o
6 CFLAGS_bpf_preload_kern.o += -I$(LIBBPF_INCLUD !! 42 bpf_preload-objs += bpf_preload_kern.o bpf_preload_umd_blob.o
7 bpf_preload-objs += bpf_preload_kern.o <<
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.