| # SPDX-License-Identifier: GPL-2.0 |
| |
| LIBDIR := ../../../lib |
| BPFDIR := $(LIBDIR)/bpf |
| APIDIR := ../../../include/uapi |
| GENDIR := ../../../../include/generated |
| GENHDR := $(GENDIR)/autoconf.h |
| |
| ifneq ($(wildcard $(GENHDR)),) |
| GENFLAGS := -DHAVE_GENHDR |
| endif |
| |
| CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include |
| LDLIBS += -lcap -lelf -lrt |
| |
| TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \ |
| test_align test_verifier_log test_dev_cgroup |
| |
| TEST_GEN_FILES = test_pkt_access.o test_xdp.o test_l4lb.o test_tcp_estats.o test_obj_id.o \ |
| test_pkt_md_access.o test_xdp_redirect.o test_xdp_meta.o sockmap_parse_prog.o \ |
| sockmap_verdict_prog.o dev_cgroup.o |
| |
| TEST_PROGS := test_kmod.sh test_xdp_redirect.sh test_xdp_meta.sh |
| |
| include ../lib.mk |
| |
| BPFOBJ := $(OUTPUT)/libbpf.a $(OUTPUT)/cgroup_helpers.c |
| |
| $(TEST_GEN_PROGS): $(BPFOBJ) |
| |
| .PHONY: force |
| |
| # force a rebuild of BPFOBJ when its dependencies are updated |
| force: |
| |
| $(BPFOBJ): force |
| $(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/ |
| |
| CLANG ?= clang |
| LLC ?= llc |
| |
| PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1) |
| |
| # Let newer LLVM versions transparently probe the kernel for availability |
| # of full BPF instruction set. |
| ifeq ($(PROBE),) |
| CPU ?= probe |
| else |
| CPU ?= generic |
| endif |
| |
| %.o: %.c |
| $(CLANG) -I. -I./include/uapi -I../../../include/uapi \ |
| -Wno-compare-distinct-pointer-types \ |
| -O2 -target bpf -emit-llvm -c $< -o - | \ |
| $(LLC) -march=bpf -mcpu=$(CPU) -filetype=obj -o $@ |
