tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1# SPDX-License-Identifier: GPL-2.0
2include ../../../../scripts/Kbuild.include
3include ../../../scripts/Makefile.arch
4
5CXX ?= $(CROSS_COMPILE)g++
6
7CURDIR := $(abspath .)
8TOOLSDIR := $(abspath ../../..)
9LIBDIR := $(TOOLSDIR)/lib
10BPFDIR := $(LIBDIR)/bpf
11TOOLSINCDIR := $(TOOLSDIR)/include
12BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool
13APIDIR := $(TOOLSINCDIR)/uapi
14GENDIR := $(abspath ../../../../include/generated)
15GENHDR := $(GENDIR)/autoconf.h
16
17ifneq ($(wildcard $(GENHDR)),)
18 GENFLAGS := -DHAVE_GENHDR
19endif
20
21CLANG ?= clang
22LLVM_OBJCOPY ?= llvm-objcopy
23BPF_GCC ?= $(shell command -v bpf-gcc;)
24SAN_CFLAGS ?=
25CFLAGS += -g -rdynamic -Wall -O2 $(GENFLAGS) $(SAN_CFLAGS) \
26 -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \
27 -I$(TOOLSINCDIR) -I$(APIDIR) \
28 -Dbpf_prog_load=bpf_prog_test_load \
29 -Dbpf_load_program=bpf_test_load_program
30LDLIBS += -lcap -lelf -lz -lrt -lpthread
31
32# Order correspond to 'make run_tests' order
33TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
34 test_verifier_log test_dev_cgroup \
35 test_sock test_sockmap get_cgroup_id_user test_socket_cookie \
36 test_cgroup_storage \
37 test_netcnt test_tcpnotify_user test_sysctl \
38 test_progs-no_alu32 \
39 test_current_pid_tgid_new_ns
40
41# Also test bpf-gcc, if present
42ifneq ($(BPF_GCC),)
43TEST_GEN_PROGS += test_progs-bpf_gcc
44endif
45
46TEST_GEN_FILES =
47TEST_FILES = test_lwt_ip_encap.o \
48 test_tc_edt.o \
49 xsk_prereqs.sh
50
51# Order correspond to 'make run_tests' order
52TEST_PROGS := test_kmod.sh \
53 test_xdp_redirect.sh \
54 test_xdp_meta.sh \
55 test_xdp_veth.sh \
56 test_offload.py \
57 test_sock_addr.sh \
58 test_tunnel.sh \
59 test_lwt_seg6local.sh \
60 test_lirc_mode2.sh \
61 test_skb_cgroup_id.sh \
62 test_flow_dissector.sh \
63 test_xdp_vlan_mode_generic.sh \
64 test_xdp_vlan_mode_native.sh \
65 test_lwt_ip_encap.sh \
66 test_tcp_check_syncookie.sh \
67 test_tc_tunnel.sh \
68 test_tc_edt.sh \
69 test_xdping.sh \
70 test_bpftool_build.sh \
71 test_bpftool.sh \
72 test_bpftool_metadata.sh \
73 test_xsk.sh
74
75TEST_PROGS_EXTENDED := with_addr.sh \
76 with_tunnels.sh \
77 test_xdp_vlan.sh
78
79# Compile but not part of 'make run_tests'
80TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \
81 flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
82 test_lirc_mode2_user xdping test_cpp runqslower bench bpf_testmod.ko \
83 xdpxceiver
84
85TEST_CUSTOM_PROGS = urandom_read
86
87# Emit succinct information message describing current building step
88# $1 - generic step name (e.g., CC, LINK, etc);
89# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor];
90# $3 - target (assumed to be file); only file name will be emitted;
91# $4 - optional extra arg, emitted as-is, if provided.
92ifeq ($(V),1)
93Q =
94msg =
95else
96Q = @
97msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";
98MAKEFLAGS += --no-print-directory
99submake_extras := feature_display=0
100endif
101
102# override lib.mk's default rules
103OVERRIDE_TARGETS := 1
104override define CLEAN
105 $(call msg,CLEAN)
106 $(Q)$(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN)
107 $(Q)$(MAKE) -C bpf_testmod clean
108endef
109
110include ../lib.mk
111
112SCRATCH_DIR := $(OUTPUT)/tools
113BUILD_DIR := $(SCRATCH_DIR)/build
114INCLUDE_DIR := $(SCRATCH_DIR)/include
115BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
116RESOLVE_BTFIDS := $(BUILD_DIR)/resolve_btfids/resolve_btfids
117
118VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \
119 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \
120 ../../../../vmlinux \
121 /sys/kernel/btf/vmlinux \
122 /boot/vmlinux-$(shell uname -r)
123VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
124
125# Define simple and short `make test_progs`, `make test_sysctl`, etc targets
126# to build individual tests.
127# NOTE: Semicolon at the end is critical to override lib.mk's default static
128# rule for binaries.
129$(notdir $(TEST_GEN_PROGS) \
130 $(TEST_PROGS) \
131 $(TEST_PROGS_EXTENDED) \
132 $(TEST_GEN_PROGS_EXTENDED) \
133 $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ;
134
135$(OUTPUT)/%.o: %.c
136 $(call msg,CC,,$@)
137 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
138
139$(OUTPUT)/%:%.c
140 $(call msg,BINARY,,$@)
141 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@
142
143$(OUTPUT)/urandom_read: urandom_read.c
144 $(call msg,BINARY,,$@)
145 $(Q)$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS) -Wl,--build-id=sha1
146
147$(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(wildcard bpf_testmod/Makefile bpf_testmod/*.[ch])
148 $(call msg,MOD,,$@)
149 $(Q)$(RM) bpf_testmod/bpf_testmod.ko # force re-compilation
150 $(Q)$(MAKE) $(submake_extras) -C bpf_testmod
151 $(Q)cp bpf_testmod/bpf_testmod.ko $@
152
153$(OUTPUT)/test_stub.o: test_stub.c $(BPFOBJ)
154 $(call msg,CC,,$@)
155 $(Q)$(CC) -c $(CFLAGS) -o $@ $<
156
157DEFAULT_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool
158
159$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL)
160 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \
161 OUTPUT=$(SCRATCH_DIR)/ VMLINUX_BTF=$(VMLINUX_BTF) \
162 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) && \
163 cp $(SCRATCH_DIR)/runqslower $@
164
165$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/test_stub.o $(BPFOBJ)
166
167$(OUTPUT)/test_dev_cgroup: cgroup_helpers.c
168$(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c
169$(OUTPUT)/test_sock: cgroup_helpers.c
170$(OUTPUT)/test_sock_addr: cgroup_helpers.c
171$(OUTPUT)/test_socket_cookie: cgroup_helpers.c
172$(OUTPUT)/test_sockmap: cgroup_helpers.c
173$(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c
174$(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c
175$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
176$(OUTPUT)/test_netcnt: cgroup_helpers.c
177$(OUTPUT)/test_sock_fields: cgroup_helpers.c
178$(OUTPUT)/test_sysctl: cgroup_helpers.c
179
180BPFTOOL ?= $(DEFAULT_BPFTOOL)
181$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
182 $(BPFOBJ) | $(BUILD_DIR)/bpftool
183 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
184 OUTPUT=$(BUILD_DIR)/bpftool/ \
185 prefix= DESTDIR=$(SCRATCH_DIR)/ install
186 $(Q)mkdir -p $(BUILD_DIR)/bpftool/Documentation
187 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \
188 -C $(BPFTOOLDIR)/Documentation \
189 OUTPUT=$(BUILD_DIR)/bpftool/Documentation/ \
190 prefix= DESTDIR=$(SCRATCH_DIR)/ install
191
192$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
193 ../../../include/uapi/linux/bpf.h \
194 | $(INCLUDE_DIR) $(BUILD_DIR)/libbpf
195 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
196 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
197
198$(BUILD_DIR)/libbpf $(BUILD_DIR)/bpftool $(BUILD_DIR)/resolve_btfids $(INCLUDE_DIR):
199 $(call msg,MKDIR,,$@)
200 $(Q)mkdir -p $@
201
202$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) | $(BPFTOOL) $(INCLUDE_DIR)
203ifeq ($(VMLINUX_H),)
204 $(call msg,GEN,,$@)
205 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@
206else
207 $(call msg,CP,,$@)
208 $(Q)cp "$(VMLINUX_H)" $@
209endif
210
211$(RESOLVE_BTFIDS): $(BPFOBJ) | $(BUILD_DIR)/resolve_btfids \
212 $(TOOLSDIR)/bpf/resolve_btfids/main.c \
213 $(TOOLSDIR)/lib/rbtree.c \
214 $(TOOLSDIR)/lib/zalloc.c \
215 $(TOOLSDIR)/lib/string.c \
216 $(TOOLSDIR)/lib/ctype.c \
217 $(TOOLSDIR)/lib/str_error_r.c
218 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \
219 OUTPUT=$(BUILD_DIR)/resolve_btfids/ BPFOBJ=$(BPFOBJ)
220
221# Get Clang's default includes on this system, as opposed to those seen by
222# '-target bpf'. This fixes "missing" files on some architectures/distros,
223# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
224#
225# Use '-idirafter': Don't interfere with include mechanics except where the
226# build would have failed anyways.
227define get_sys_includes
228$(shell $(1) -v -E - </dev/null 2>&1 \
229 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \
230$(shell $(1) -dM -E - </dev/null | grep '#define __riscv_xlen ' | sed 's/#define /-D/' | sed 's/ /=/')
231endef
232
233# Determine target endianness.
234IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
235 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
236MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
237
238CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
239BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \
240 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \
241 -I$(abspath $(OUTPUT)/../usr/include)
242
243CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
244 -Wno-compare-distinct-pointer-types
245
246$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline
247$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline
248
249$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
250
251# Build BPF object using Clang
252# $1 - input .c file
253# $2 - output .o file
254# $3 - CFLAGS
255define CLANG_BPF_BUILD_RULE
256 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
257 $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -o $2 -mcpu=v3
258endef
259# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
260define CLANG_NOALU32_BPF_BUILD_RULE
261 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
262 $(Q)$(CLANG) $3 -O2 -target bpf -c $1 -o $2 -mcpu=v2
263endef
264# Build BPF object using GCC
265define GCC_BPF_BUILD_RULE
266 $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2)
267 $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2
268endef
269
270SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c
271
272# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on
273# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES.
274# Parameters:
275# $1 - test runner base binary name (e.g., test_progs)
276# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
277define DEFINE_TEST_RUNNER
278
279TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2
280TRUNNER_BINARY := $1$(if $2,-)$2
281TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \
282 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c)))
283TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \
284 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES)))
285TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES))
286TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h
287TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c))
288TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, $$(TRUNNER_BPF_SRCS))
289TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \
290 $$(filter-out $(SKEL_BLACKLIST), \
291 $$(TRUNNER_BPF_SRCS)))
292TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS)
293
294# Evaluate rules now with extra TRUNNER_XXX variables above already defined
295$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2))
296
297endef
298
299# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and
300# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with:
301# $1 - test runner base binary name (e.g., test_progs)
302# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
303define DEFINE_TEST_RUNNER_RULES
304
305ifeq ($($(TRUNNER_OUTPUT)-dir),)
306$(TRUNNER_OUTPUT)-dir := y
307$(TRUNNER_OUTPUT):
308 $$(call msg,MKDIR,,$$@)
309 $(Q)mkdir -p $$@
310endif
311
312# ensure we set up BPF objects generation rule just once for a given
313# input/output directory combination
314ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),)
315$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y
316$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.o: \
317 $(TRUNNER_BPF_PROGS_DIR)/%.c \
318 $(TRUNNER_BPF_PROGS_DIR)/*.h \
319 $$(INCLUDE_DIR)/vmlinux.h \
320 $(wildcard $(BPFDIR)/bpf_*.h) | $(TRUNNER_OUTPUT)
321 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \
322 $(TRUNNER_BPF_CFLAGS))
323
324$(TRUNNER_BPF_SKELS): $(TRUNNER_OUTPUT)/%.skel.h: \
325 $(TRUNNER_OUTPUT)/%.o \
326 | $(BPFTOOL) $(TRUNNER_OUTPUT)
327 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
328 $(Q)$$(BPFTOOL) gen skeleton $$< > $$@
329endif
330
331# ensure we set up tests.h header generation rule just once
332ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),)
333$(TRUNNER_TESTS_DIR)-tests-hdr := y
334$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c
335 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@)
336 $$(shell ( cd $(TRUNNER_TESTS_DIR); \
337 echo '/* Generated header, do not edit */'; \
338 ls *.c 2> /dev/null | \
339 sed -e 's@\([^\.]*\)\.c@DEFINE_TEST(\1)@'; \
340 ) > $$@)
341endif
342
343# compile individual test files
344# Note: we cd into output directory to ensure embedded BPF object is found
345$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \
346 $(TRUNNER_TESTS_DIR)/%.c \
347 $(TRUNNER_EXTRA_HDRS) \
348 $(TRUNNER_BPF_OBJS) \
349 $(TRUNNER_BPF_SKELS) \
350 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
351 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@)
352 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F)
353
354$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \
355 %.c \
356 $(TRUNNER_EXTRA_HDRS) \
357 $(TRUNNER_TESTS_HDR) \
358 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
359 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@)
360 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@
361
362# only copy extra resources if in flavored build
363$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT)
364ifneq ($2,)
365 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES))
366 $(Q)cp -a $$^ $(TRUNNER_OUTPUT)/
367endif
368
369$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \
370 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \
371 $(RESOLVE_BTFIDS) \
372 | $(TRUNNER_BINARY)-extras
373 $$(call msg,BINARY,,$$@)
374 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@
375 $(Q)$(RESOLVE_BTFIDS) --no-fail --btf $(TRUNNER_OUTPUT)/btf_data.o $$@
376
377endef
378
379# Define test_progs test runner.
380TRUNNER_TESTS_DIR := prog_tests
381TRUNNER_BPF_PROGS_DIR := progs
382TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c \
383 network_helpers.c testing_helpers.c \
384 btf_helpers.c flow_dissector_load.h
385TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko \
386 ima_setup.sh \
387 $(wildcard progs/btf_dump_test_case_*.c)
388TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
389TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS)
390$(eval $(call DEFINE_TEST_RUNNER,test_progs))
391
392# Define test_progs-no_alu32 test runner.
393TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE
394$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32))
395
396# Define test_progs BPF-GCC-flavored test runner.
397ifneq ($(BPF_GCC),)
398TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
399TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc)
400$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
401endif
402
403# Define test_maps test runner.
404TRUNNER_TESTS_DIR := map_tests
405TRUNNER_BPF_PROGS_DIR := progs
406TRUNNER_EXTRA_SOURCES := test_maps.c
407TRUNNER_EXTRA_FILES :=
408TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built)
409TRUNNER_BPF_CFLAGS :=
410$(eval $(call DEFINE_TEST_RUNNER,test_maps))
411
412# Define test_verifier test runner.
413# It is much simpler than test_maps/test_progs and sufficiently different from
414# them (e.g., test.h is using completely pattern), that it's worth just
415# explicitly defining all the rules explicitly.
416verifier/tests.h: verifier/*.c
417 $(shell ( cd verifier/; \
418 echo '/* Generated header, do not edit */'; \
419 echo '#ifdef FILL_ARRAY'; \
420 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \
421 echo '#endif' \
422 ) > verifier/tests.h)
423$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT)
424 $(call msg,BINARY,,$@)
425 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
426
427# Make sure we are able to include and link libbpf against c++.
428$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ)
429 $(call msg,CXX,,$@)
430 $(Q)$(CXX) $(CFLAGS) $^ $(LDLIBS) -o $@
431
432# Benchmark runner
433$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h
434 $(call msg,CC,,$@)
435 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
436$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h
437$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h
438$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \
439 $(OUTPUT)/perfbuf_bench.skel.h
440$(OUTPUT)/bench.o: bench.h testing_helpers.h
441$(OUTPUT)/bench: LDLIBS += -lm
442$(OUTPUT)/bench: $(OUTPUT)/bench.o $(OUTPUT)/testing_helpers.o \
443 $(OUTPUT)/bench_count.o \
444 $(OUTPUT)/bench_rename.o \
445 $(OUTPUT)/bench_trigger.o \
446 $(OUTPUT)/bench_ringbufs.o
447 $(call msg,BINARY,,$@)
448 $(Q)$(CC) $(LDFLAGS) -o $@ $(filter %.a %.o,$^) $(LDLIBS)
449
450EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) \
451 prog_tests/tests.h map_tests/tests.h verifier/tests.h \
452 feature \
453 $(addprefix $(OUTPUT)/,*.o *.skel.h no_alu32 bpf_gcc bpf_testmod.ko)