1 # SPDX-License-Identifier: GPL-2.0
3 BPFDIR := $(LIBDIR)/bpf
4 APIDIR := ../../../include/uapi
5 GENDIR := ../../../../include/generated
6 GENHDR := $(GENDIR)/autoconf.h
8 ifneq ($(wildcard $(GENHDR)),)
9 GENFLAGS := -DHAVE_GENHDR
12 CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include
15 TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
16 test_align test_verifier_log
18 TEST_GEN_FILES = test_pkt_access.o test_xdp.o test_l4lb.o test_tcp_estats.o test_obj_id.o \
19 test_pkt_md_access.o test_xdp_redirect.o test_xdp_meta.o sockmap_parse_prog.o \
20 sockmap_verdict_prog.o
22 TEST_PROGS := test_kmod.sh test_xdp_redirect.sh test_xdp_meta.sh
26 BPFOBJ := $(OUTPUT)/libbpf.a $(OUTPUT)/cgroup_helpers.c
28 $(TEST_GEN_PROGS): $(BPFOBJ)
32 # force a rebuild of BPFOBJ when its dependencies are updated
36 $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/
41 PROBE := $(shell llc -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1)
43 # Let newer LLVM versions transparently probe the kernel for availability
44 # of full BPF instruction set.
52 $(CLANG) -I. -I./include/uapi -I../../../include/uapi \
53 -Wno-compare-distinct-pointer-types \
54 -O2 -target bpf -emit-llvm -c $< -o - | \
55 $(LLC) -march=bpf -mcpu=$(CPU) -filetype=obj -o $@