1# SPDX-License-Identifier: GPL-2.0
2
3LIBDIR := ../../../lib
4BPFDIR := $(LIBDIR)/bpf
5APIDIR := ../../../include/uapi
6GENDIR := ../../../../include/generated
7GENHDR := $(GENDIR)/autoconf.h
8
9ifneq ($(wildcard $(GENHDR)),)
10  GENFLAGS := -DHAVE_GENHDR
11endif
12
13CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(BPFDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include
14LDLIBS += -lcap -lelf -lrt -lpthread
15
16TEST_CUSTOM_PROGS = $(OUTPUT)/urandom_read
17all: $(TEST_CUSTOM_PROGS)
18
19$(TEST_CUSTOM_PROGS): urandom_read
20
21urandom_read: urandom_read.c
22	$(CC) -o $(TEST_CUSTOM_PROGS) -static $< -Wl,--build-id
23
24# Order correspond to 'make run_tests' order
25TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
26	test_align test_verifier_log test_dev_cgroup test_tcpbpf_user \
27	test_sock test_btf test_sockmap
28
29TEST_GEN_FILES = test_pkt_access.o test_xdp.o test_l4lb.o test_tcp_estats.o test_obj_id.o \
30	test_pkt_md_access.o test_xdp_redirect.o test_xdp_meta.o sockmap_parse_prog.o     \
31	sockmap_verdict_prog.o dev_cgroup.o sample_ret0.o test_tracepoint.o \
32	test_l4lb_noinline.o test_xdp_noinline.o test_stacktrace_map.o \
33	sample_map_ret0.o test_tcpbpf_kern.o test_stacktrace_build_id.o \
34	sockmap_tcp_msg_prog.o connect4_prog.o connect6_prog.o test_adjust_tail.o \
35	test_btf_haskv.o test_btf_nokv.o test_sockmap_kern.o test_tunnel_kern.o \
36	test_get_stack_rawtp.o test_sockmap_kern.o test_sockhash_kern.o
37
38# Order correspond to 'make run_tests' order
39TEST_PROGS := test_kmod.sh \
40	test_libbpf.sh \
41	test_xdp_redirect.sh \
42	test_xdp_meta.sh \
43	test_offload.py \
44	test_sock_addr.sh \
45	test_tunnel.sh
46
47# Compile but not part of 'make run_tests'
48TEST_GEN_PROGS_EXTENDED = test_libbpf_open test_sock_addr
49
50include ../lib.mk
51
52BPFOBJ := $(OUTPUT)/libbpf.a
53
54$(TEST_GEN_PROGS): $(BPFOBJ)
55
56$(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/libbpf.a
57
58$(OUTPUT)/test_dev_cgroup: cgroup_helpers.c
59$(OUTPUT)/test_sock: cgroup_helpers.c
60$(OUTPUT)/test_sock_addr: cgroup_helpers.c
61$(OUTPUT)/test_sockmap: cgroup_helpers.c
62$(OUTPUT)/test_progs: trace_helpers.c
63
64.PHONY: force
65
66# force a rebuild of BPFOBJ when its dependencies are updated
67force:
68
69$(BPFOBJ): force
70	$(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/
71
72CLANG ?= clang
73LLC   ?= llc
74LLVM_OBJCOPY ?= llvm-objcopy
75BTF_PAHOLE ?= pahole
76
77PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1)
78
79# Let newer LLVM versions transparently probe the kernel for availability
80# of full BPF instruction set.
81ifeq ($(PROBE),)
82  CPU ?= probe
83else
84  CPU ?= generic
85endif
86
87CLANG_FLAGS = -I. -I./include/uapi -I../../../include/uapi \
88	      -Wno-compare-distinct-pointer-types
89
90$(OUTPUT)/test_l4lb_noinline.o: CLANG_FLAGS += -fno-inline
91$(OUTPUT)/test_xdp_noinline.o: CLANG_FLAGS += -fno-inline
92
93BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris)
94BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF)
95BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) --version 2>&1 | grep LLVM)
96
97ifneq ($(BTF_LLC_PROBE),)
98ifneq ($(BTF_PAHOLE_PROBE),)
99ifneq ($(BTF_OBJCOPY_PROBE),)
100	CLANG_FLAGS += -g
101	LLC_FLAGS += -mattr=dwarfris
102	DWARF2BTF = y
103endif
104endif
105endif
106
107$(OUTPUT)/%.o: %.c
108	$(CLANG) $(CLANG_FLAGS) \
109		 -O2 -target bpf -emit-llvm -c $< -o - |      \
110	$(LLC) -march=bpf -mcpu=$(CPU) $(LLC_FLAGS) -filetype=obj -o $@
111ifeq ($(DWARF2BTF),y)
112	$(BTF_PAHOLE) -J $@
113endif
114
115EXTRA_CLEAN := $(TEST_CUSTOM_PROGS)
116