tools/testing/selftests/bpf/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2 include ../../../../scripts/Kbuild.include
   3 include ../../../scripts/Makefile.arch
   4
   5 CXX ?= $(CROSS_COMPILE)g++
   6
   7 CURDIR := $(abspath .)
   8 TOOLSDIR := $(abspath ../../..)
   9 LIBDIR := $(TOOLSDIR)/lib
  10 BPFDIR := $(LIBDIR)/bpf
  11 TOOLSINCDIR := $(TOOLSDIR)/include
  12 BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool
  13 APIDIR := $(TOOLSINCDIR)/uapi
  14 GENDIR := $(abspath ../../../../include/generated)
  15 GENHDR := $(GENDIR)/autoconf.h
  16
  17 ifneq ($(wildcard $(GENHDR)),)
  18   GENFLAGS := -DHAVE_GENHDR
  19 endif
  20
  21 CLANG           ?= clang
  22 LLC             ?= llc
  23 LLVM_OBJCOPY    ?= llvm-objcopy
  24 BPF_GCC         ?= $(shell command -v bpf-gcc;)
  25 SAN_CFLAGS      ?=
  26 CFLAGS += -g -rdynamic -Wall -O2 $(GENFLAGS) $(SAN_CFLAGS)              \
  27           -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR)          \
  28           -I$(TOOLSINCDIR) -I$(APIDIR)                                  \
  29           -Dbpf_prog_load=bpf_prog_test_load                            \
  30           -Dbpf_load_program=bpf_test_load_program
  31 LDLIBS += -lcap -lelf -lz -lrt -lpthread
  32
  33 # Order correspond to 'make run_tests' order
  34 TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
  35         test_verifier_log test_dev_cgroup test_tcpbpf_user \
  36         test_sock test_btf test_sockmap get_cgroup_id_user test_socket_cookie \
  37         test_cgroup_storage \
  38         test_netcnt test_tcpnotify_user test_sock_fields test_sysctl \
  39         test_progs-no_alu32 \
  40         test_current_pid_tgid_new_ns
  41
  42 # Also test bpf-gcc, if present
  43 ifneq ($(BPF_GCC),)
  44 TEST_GEN_PROGS += test_progs-bpf_gcc
  45 endif
  46
  47 TEST_GEN_FILES =
  48 TEST_FILES = test_lwt_ip_encap.o \
  49         test_tc_edt.o
  50
  51 # Order correspond to 'make run_tests' order
  52 TEST_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
  73 TEST_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'
  80 TEST_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
  84 TEST_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 # $4 - optional extra arg, emitted as-is, if provided.
  91 ifeq ($(V),1)
  92 Q =
  93 msg =
  94 else
  95 Q = @
  96 msg = @printf '  %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";
  97 MAKEFLAGS += --no-print-directory
  98 submake_extras := feature_display=0
  99 endif
 100
 101 # override lib.mk's default rules
 102 OVERRIDE_TARGETS := 1
 103 override define CLEAN
 104         $(call msg,CLEAN)
 105         $(Q)$(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN)
 106 endef
 107
 108 include ../lib.mk
 109
 110 SCRATCH_DIR := $(OUTPUT)/tools
 111 BUILD_DIR := $(SCRATCH_DIR)/build
 112 INCLUDE_DIR := $(SCRATCH_DIR)/include
 113 BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
 114 RESOLVE_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
 142 VMLINUX_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)
 147 VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
 148
 149 DEFAULT_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
 173 BPFTOOL ?= $(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) $(INCLUDE_DIR)
 191 ifeq ($(VMLINUX_H),)
 192         $(call msg,GEN,,$@)
 193         $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@
 194 else
 195         $(call msg,CP,,$@)
 196         $(Q)cp "$(VMLINUX_H)" $@
 197 endif
 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.
 215 define 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 }')
 218 endef
 219
 220 # Determine target endianness.
 221 IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
 222                         grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
 223 MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
 224
 225 CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
 226 BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN)                   \
 227              -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR)                   \
 228              -I$(abspath $(OUTPUT)/../usr/include)
 229
 230 CLANG_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
 243 define 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
 248 endef
 249 # Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
 250 define 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
 255 endef
 256 # Similar to CLANG_BPF_BUILD_RULE, but using native Clang and bpf LLC
 257 define 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
 262 endef
 263 # Build BPF object using GCC
 264 define GCC_BPF_BUILD_RULE
 265         $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2)
 266         $(Q)$(BPF_GCC) $3 $4 -O2 -c $1 -o $2
 267 endef
 268
 269 SKEL_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)
 276 define DEFINE_TEST_RUNNER
 277
 278 TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2
 279 TRUNNER_BINARY := $1$(if $2,-)$2
 280 TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o,       \
 281                                  $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c)))
 282 TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o,           \
 283                                  $$(filter %.c,$(TRUNNER_EXTRA_SOURCES)))
 284 TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES))
 285 TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h
 286 TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c))
 287 TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, $$(TRUNNER_BPF_SRCS))
 288 TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h,       \
 289                                  $$(filter-out $(SKEL_BLACKLIST),       \
 290                                                $$(TRUNNER_BPF_SRCS)))
 291 TEST_GEN_FILES += $$(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
 296 endef
 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 # $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
 302 define DEFINE_TEST_RUNNER_RULES
 303
 304 ifeq ($($(TRUNNER_OUTPUT)-dir),)
 305 $(TRUNNER_OUTPUT)-dir := y
 306 $(TRUNNER_OUTPUT):
 307         $$(call msg,MKDIR,,$$@)
 308         $(Q)mkdir -p $$@
 309 endif
 310
 311 # ensure we set up BPF objects generation rule just once for a given
 312 # input/output directory combination
 313 ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),)
 314 $(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y
 315 $(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.o:                             \
 316                      $(TRUNNER_BPF_PROGS_DIR)/%.c                       \
 317                      $(TRUNNER_BPF_PROGS_DIR)/*.h                       \
 318                      $$(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)$$(BPFTOOL) gen skeleton $$< > $$@
 329 endif
 330
 331 # ensure we set up tests.h header generation rule just once
 332 ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),)
 333 $(TRUNNER_TESTS_DIR)-tests-hdr := y
 334 $(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c
 335         $$(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                  ) > $$@)
 341 endif
 342
 343 # compile individual test files
 344 # Note: we cd into output directory to ensure embedded BPF object is found
 345 $(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o:                       \
 346                       $(TRUNNER_TESTS_DIR)/%.c                          \
 347                       $(TRUNNER_EXTRA_HDRS)                             \
 348                       $(TRUNNER_BPF_OBJS)                               \
 349                       $(TRUNNER_BPF_SKELS)                              \
 350                       $$(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)
 364 ifneq ($2,)
 365         $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES))
 366         $(Q)cp -a $$^ $(TRUNNER_OUTPUT)/
 367 endif
 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
 377 endef
 378
 379 # Define test_progs test runner.
 380 TRUNNER_TESTS_DIR := prog_tests
 381 TRUNNER_BPF_PROGS_DIR := progs
 382 TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c  \
 383                          network_helpers.c testing_helpers.c            \
 384                          flow_dissector_load.h
 385 TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read                           \
 386                        $(wildcard progs/btf_dump_test_case_*.c)
 387 TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
 388 TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS)
 389 TRUNNER_BPF_LDFLAGS := -mattr=+alu32
 390 $(eval $(call DEFINE_TEST_RUNNER,test_progs))
 391
 392 # Define test_progs-no_alu32 test runner.
 393 TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE
 394 TRUNNER_BPF_LDFLAGS :=
 395 $(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32))
 396
 397 # Define test_progs BPF-GCC-flavored test runner.
 398 ifneq ($(BPF_GCC),)
 399 TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
 400 TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc)
 401 TRUNNER_BPF_LDFLAGS :=
 402 $(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
 403 endif
 404
 405 # Define test_maps test runner.
 406 TRUNNER_TESTS_DIR := map_tests
 407 TRUNNER_BPF_PROGS_DIR := progs
 408 TRUNNER_EXTRA_SOURCES := test_maps.c
 409 TRUNNER_EXTRA_FILES :=
 410 TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built)
 411 TRUNNER_BPF_CFLAGS :=
 412 TRUNNER_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.
 419 verifier/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
 453 EXTRA_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)