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# 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 -lpthread

# Order correspond to 'make run_tests' order
TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map \
	test_verifier_log

include ../lib.mk

BPFOBJ := $(OUTPUT)/libbpf.a cgroup_helpers.c

$(TEST_GEN_PROGS): $(BPFOBJ)

$(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/libbpf.a

.PHONY: force

# force a rebuild of BPFOBJ when its dependencies are updated
force:

$(BPFOBJ): force
	$(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/

CLANG ?= clang
LLC   ?= llc

CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \
	      -Wno-compare-distinct-pointer-types

$(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline
$(OUTPUT)/test_xdp_noinline.o: CLANG_FLAGS += -fno-inline

$(OUTPUT)/%.o: %.c
	$(CLANG) $(CLANG_FLAGS) \
		 -O2 -target bpf -emit-llvm -c $< -o - |      \
	$(LLC) -march=bpf -mcpu=$(CPU) -filetype=obj -o $@

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