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) 457