1 # SPDX-License-Identifier: GPL-2.0 2 3 LIBDIR := ../../../lib 4 BPFDIR := $(LIBDIR)/bpf 5 APIDIR := ../../../include/uapi 6 GENDIR := ../../../../include/generated 7 GENHDR := $(GENDIR)/autoconf.h 8 9 ifneq ($(wildcard $(GENHDR)),) 10 GENFLAGS := -DHAVE_GENHDR 11 endif 12 13 CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include 14 LDLIBS += -lcap -lelf -lrt 15 16 TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \ 17 test_align test_verifier_log test_dev_cgroup 18 19 TEST_GEN_FILES = test_pkt_access.o test_xdp.o test_l4lb.o test_tcp_estats.o test_obj_id.o \ 20 test_pkt_md_access.o test_xdp_redirect.o test_xdp_meta.o sockmap_parse_prog.o \ 21 sockmap_verdict_prog.o dev_cgroup.o 22 23 TEST_PROGS := test_kmod.sh test_xdp_redirect.sh test_xdp_meta.sh 24 25 include ../lib.mk 26 27 BPFOBJ := $(OUTPUT)/libbpf.a $(OUTPUT)/cgroup_helpers.c 28 29 $(TEST_GEN_PROGS): $(BPFOBJ) 30 31 .PHONY: force 32 33 # force a rebuild of BPFOBJ when its dependencies are updated 34 force: 35 36 $(BPFOBJ): force 37 $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/ 38 39 CLANG ?= clang 40 LLC ?= llc 41 42 PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1) 43 44 # Let newer LLVM versions transparently probe the kernel for availability 45 # of full BPF instruction set. 46 ifeq ($(PROBE),) 47 CPU ?= probe 48 else 49 CPU ?= generic 50 endif 51 52 %.o: %.c 53 $(CLANG) -I. -I./include/uapi -I../../../include/uapi \ 54 -Wno-compare-distinct-pointer-types \ 55 -O2 -target bpf -emit-llvm -c $< -o - | \ 56 $(LLC) -march=bpf -mcpu=$(CPU) -filetype=obj -o $@ 57
