Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
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
22LLC ?= llc
23LLVM_OBJCOPY ?= llvm-objcopy
24BPF_GCC ?= $(shell command -v bpf-gcc;)
25SAN_CFLAGS ?=
26CFLAGS += -g -rdynamic -Wall -O2 $(GENFLAGS) $(SAN_CFLAGS) \
27 -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \
28 -I$(TOOLSINCDIR) -I$(APIDIR) \
29 -Dbpf_prog_load=bpf_prog_test_load \
30 -Dbpf_load_program=bpf_test_load_program
31LDLIBS += -lcap -lelf -lz -lrt -lpthread
32
33# Order correspond to 'make run_tests' order
34TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
35 test_verifier_log test_dev_cgroup test_tcpbpf_user \
36 test_sock test_btf test_sockmap get_cgroup_id_user test_socket_cookie \
37 test_cgroup_storage \
38 test_netcnt test_tcpnotify_user test_sock_fields test_sysctl \
39 test_progs-no_alu32 \
40 test_current_pid_tgid_new_ns
41
42# Also test bpf-gcc, if present
43ifneq ($(BPF_GCC),)
44TEST_GEN_PROGS += test_progs-bpf_gcc
45endif
46
47TEST_GEN_FILES =
48TEST_FILES = test_lwt_ip_encap.o \
49 test_tc_edt.o
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
73TEST_PROGS_EXTENDED := with_addr.sh \
74 with_tunnels.sh \
75 tcp_client.py \
76 tcp_server.py \
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
83
84TEST_CUSTOM_PROGS = urandom_read
85
86# Emit succinct information message describing current building step
87# $1 - generic step name (e.g., CC, LINK, etc);
88# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor];
89# $3 - target (assumed to be file); only file name will be emitted;
90# $4 - optional extra arg, emitted as-is, if provided.
91ifeq ($(V),1)
92Q =
93msg =
94else
95Q = @
96msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";
97MAKEFLAGS += --no-print-directory
98submake_extras := feature_display=0
99endif
100
101# override lib.mk's default rules
102OVERRIDE_TARGETS := 1
103override define CLEAN
104 $(call msg,CLEAN)
105 $(Q)$(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN)
106endef
107
108include ../lib.mk
109
110SCRATCH_DIR := $(OUTPUT)/tools
111BUILD_DIR := $(SCRATCH_DIR)/build
112INCLUDE_DIR := $(SCRATCH_DIR)/include
113BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
114RESOLVE_BTFIDS := $(BUILD_DIR)/resolve_btfids/resolve_btfids
115
116# Define simple and short `make test_progs`, `make test_sysctl`, etc targets
117# to build individual tests.
118# NOTE: Semicolon at the end is critical to override lib.mk's default static
119# rule for binaries.
120$(notdir $(TEST_GEN_PROGS) \
121 $(TEST_PROGS) \
122 $(TEST_PROGS_EXTENDED) \
123 $(TEST_GEN_PROGS_EXTENDED) \
124 $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ;
125
126$(OUTPUT)/%.o: %.c
127 $(call msg,CC,,$@)
128 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
129
130$(OUTPUT)/%:%.c
131 $(call msg,BINARY,,$@)
132 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@
133
134$(OUTPUT)/urandom_read: urandom_read.c
135 $(call msg,BINARY,,$@)
136 $(Q)$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS) -Wl,--build-id
137
138$(OUTPUT)/test_stub.o: test_stub.c $(BPFOBJ)
139 $(call msg,CC,,$@)
140 $(Q)$(CC) -c $(CFLAGS) -o $@ $<
141
142VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \
143 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \
144 ../../../../vmlinux \
145 /sys/kernel/btf/vmlinux \
146 /boot/vmlinux-$(shell uname -r)
147VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
148
149DEFAULT_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool
150
151$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL)
152 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \
153 OUTPUT=$(SCRATCH_DIR)/ VMLINUX_BTF=$(VMLINUX_BTF) \
154 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) && \
155 cp $(SCRATCH_DIR)/runqslower $@
156
157$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/test_stub.o $(BPFOBJ)
158
159$(OUTPUT)/test_dev_cgroup: cgroup_helpers.c
160$(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c
161$(OUTPUT)/test_sock: cgroup_helpers.c
162$(OUTPUT)/test_sock_addr: cgroup_helpers.c
163$(OUTPUT)/test_socket_cookie: cgroup_helpers.c
164$(OUTPUT)/test_sockmap: cgroup_helpers.c
165$(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c
166$(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c
167$(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c
168$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
169$(OUTPUT)/test_netcnt: cgroup_helpers.c
170$(OUTPUT)/test_sock_fields: cgroup_helpers.c
171$(OUTPUT)/test_sysctl: cgroup_helpers.c
172
173BPFTOOL ?= $(DEFAULT_BPFTOOL)
174$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
175 $(BPFOBJ) | $(BUILD_DIR)/bpftool
176 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
177 OUTPUT=$(BUILD_DIR)/bpftool/ \
178 prefix= DESTDIR=$(SCRATCH_DIR)/ install
179
180$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
181 ../../../include/uapi/linux/bpf.h \
182 | $(INCLUDE_DIR) $(BUILD_DIR)/libbpf
183 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
184 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
185
186$(BUILD_DIR)/libbpf $(BUILD_DIR)/bpftool $(BUILD_DIR)/resolve_btfids $(INCLUDE_DIR):
187 $(call msg,MKDIR,,$@)
188 $(Q)mkdir -p $@
189
190$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) | $(BPFTOOL) $(INCLUDE_DIR)
191ifeq ($(VMLINUX_H),)
192 $(call msg,GEN,,$@)
193 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@
194else
195 $(call msg,CP,,$@)
196 $(Q)cp "$(VMLINUX_H)" $@
197endif
198
199$(RESOLVE_BTFIDS): $(BPFOBJ) | $(BUILD_DIR)/resolve_btfids \
200 $(TOOLSDIR)/bpf/resolve_btfids/main.c \
201 $(TOOLSDIR)/lib/rbtree.c \
202 $(TOOLSDIR)/lib/zalloc.c \
203 $(TOOLSDIR)/lib/string.c \
204 $(TOOLSDIR)/lib/ctype.c \
205 $(TOOLSDIR)/lib/str_error_r.c
206 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \
207 OUTPUT=$(BUILD_DIR)/resolve_btfids/ BPFOBJ=$(BPFOBJ)
208
209# Get Clang's default includes on this system, as opposed to those seen by
210# '-target bpf'. This fixes "missing" files on some architectures/distros,
211# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
212#
213# Use '-idirafter': Don't interfere with include mechanics except where the
214# build would have failed anyways.
215define get_sys_includes
216$(shell $(1) -v -E - </dev/null 2>&1 \
217 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }')
218endef
219
220# Determine target endianness.
221IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
222 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
223MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
224
225CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
226BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \
227 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \
228 -I$(abspath $(OUTPUT)/../usr/include)
229
230CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
231 -Wno-compare-distinct-pointer-types
232
233$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline
234$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline
235
236$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
237
238# Build BPF object using Clang
239# $1 - input .c file
240# $2 - output .o file
241# $3 - CFLAGS
242# $4 - LDFLAGS
243define CLANG_BPF_BUILD_RULE
244 $(call msg,CLNG-LLC,$(TRUNNER_BINARY),$2)
245 $(Q)($(CLANG) $3 -O2 -target bpf -emit-llvm \
246 -c $1 -o - || echo "BPF obj compilation failed") | \
247 $(LLC) -mattr=dwarfris -march=bpf -mcpu=v3 $4 -filetype=obj -o $2
248endef
249# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
250define CLANG_NOALU32_BPF_BUILD_RULE
251 $(call msg,CLNG-LLC,$(TRUNNER_BINARY),$2)
252 $(Q)($(CLANG) $3 -O2 -target bpf -emit-llvm \
253 -c $1 -o - || echo "BPF obj compilation failed") | \
254 $(LLC) -march=bpf -mcpu=v2 $4 -filetype=obj -o $2
255endef
256# Similar to CLANG_BPF_BUILD_RULE, but using native Clang and bpf LLC
257define CLANG_NATIVE_BPF_BUILD_RULE
258 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
259 $(Q)($(CLANG) $3 -O2 -emit-llvm \
260 -c $1 -o - || echo "BPF obj compilation failed") | \
261 $(LLC) -march=bpf -mcpu=v3 $4 -filetype=obj -o $2
262endef
263# Build BPF object using GCC
264define GCC_BPF_BUILD_RULE
265 $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2)
266 $(Q)$(BPF_GCC) $3 $4 -O2 -c $1 -o $2
267endef
268
269SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c
270
271# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on
272# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES.
273# Parameters:
274# $1 - test runner base binary name (e.g., test_progs)
275# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
276define DEFINE_TEST_RUNNER
277
278TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2
279TRUNNER_BINARY := $1$(if $2,-)$2
280TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \
281 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c)))
282TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \
283 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES)))
284TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES))
285TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h
286TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c))
287TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, $$(TRUNNER_BPF_SRCS))
288TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \
289 $$(filter-out $(SKEL_BLACKLIST), \
290 $$(TRUNNER_BPF_SRCS)))
291TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS)
292
293# Evaluate rules now with extra TRUNNER_XXX variables above already defined
294$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2))
295
296endef
297
298# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and
299# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with:
300# $1 - test runner base binary name (e.g., test_progs)
301# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
302define DEFINE_TEST_RUNNER_RULES
303
304ifeq ($($(TRUNNER_OUTPUT)-dir),)
305$(TRUNNER_OUTPUT)-dir := y
306$(TRUNNER_OUTPUT):
307 $$(call msg,MKDIR,,$$@)
308 $(Q)mkdir -p $$@
309endif
310
311# ensure we set up BPF objects generation rule just once for a given
312# input/output directory combination
313ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),)
314$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y
315$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.o: \
316 $(TRUNNER_BPF_PROGS_DIR)/%.c \
317 $(TRUNNER_BPF_PROGS_DIR)/*.h \
318 $$(INCLUDE_DIR)/vmlinux.h \
319 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
320 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \
321 $(TRUNNER_BPF_CFLAGS), \
322 $(TRUNNER_BPF_LDFLAGS))
323
324$(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 $$@
375 $(Q)$(RESOLVE_BTFIDS) --no-fail --btf btf_data.o $$@
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 flow_dissector_load.h
385TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read \
386 $(wildcard progs/btf_dump_test_case_*.c)
387TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
388TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS)
389TRUNNER_BPF_LDFLAGS := -mattr=+alu32
390$(eval $(call DEFINE_TEST_RUNNER,test_progs))
391
392# Define test_progs-no_alu32 test runner.
393TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE
394TRUNNER_BPF_LDFLAGS :=
395$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32))
396
397# Define test_progs BPF-GCC-flavored test runner.
398ifneq ($(BPF_GCC),)
399TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
400TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc)
401TRUNNER_BPF_LDFLAGS :=
402$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
403endif
404
405# Define test_maps test runner.
406TRUNNER_TESTS_DIR := map_tests
407TRUNNER_BPF_PROGS_DIR := progs
408TRUNNER_EXTRA_SOURCES := test_maps.c
409TRUNNER_EXTRA_FILES :=
410TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built)
411TRUNNER_BPF_CFLAGS :=
412TRUNNER_BPF_LDFLAGS :=
413$(eval $(call DEFINE_TEST_RUNNER,test_maps))
414
415# Define test_verifier test runner.
416# It is much simpler than test_maps/test_progs and sufficiently different from
417# them (e.g., test.h is using completely pattern), that it's worth just
418# explicitly defining all the rules explicitly.
419verifier/tests.h: verifier/*.c
420 $(shell ( cd verifier/; \
421 echo '/* Generated header, do not edit */'; \
422 echo '#ifdef FILL_ARRAY'; \
423 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \
424 echo '#endif' \
425 ) > verifier/tests.h)
426$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT)
427 $(call msg,BINARY,,$@)
428 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
429
430# Make sure we are able to include and link libbpf against c++.
431$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ)
432 $(call msg,CXX,,$@)
433 $(Q)$(CXX) $(CFLAGS) $^ $(LDLIBS) -o $@
434
435# Benchmark runner
436$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h
437 $(call msg,CC,,$@)
438 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
439$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h
440$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h
441$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \
442 $(OUTPUT)/perfbuf_bench.skel.h
443$(OUTPUT)/bench.o: bench.h testing_helpers.h
444$(OUTPUT)/bench: LDLIBS += -lm
445$(OUTPUT)/bench: $(OUTPUT)/bench.o $(OUTPUT)/testing_helpers.o \
446 $(OUTPUT)/bench_count.o \
447 $(OUTPUT)/bench_rename.o \
448 $(OUTPUT)/bench_trigger.o \
449 $(OUTPUT)/bench_ringbufs.o
450 $(call msg,BINARY,,$@)
451 $(Q)$(CC) $(LDFLAGS) -o $@ $(filter %.a %.o,$^) $(LDLIBS)
452
453EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) \
454 prog_tests/tests.h map_tests/tests.h verifier/tests.h \
455 feature \
456 $(addprefix $(OUTPUT)/,*.o *.skel.h no_alu32 bpf_gcc)