1# SPDX-License-Identifier: GPL-2.0 2include ../../../build/Build.include 3include ../../../scripts/Makefile.arch 4include ../../../scripts/Makefile.include 5 6CXX ?= $(CROSS_COMPILE)g++ 7OBJCOPY ?= $(CROSS_COMPILE)objcopy 8 9CURDIR := $(abspath .) 10TOOLSDIR := $(abspath ../../..) 11LIBDIR := $(TOOLSDIR)/lib 12BPFDIR := $(LIBDIR)/bpf 13TOOLSINCDIR := $(TOOLSDIR)/include 14TOOLSARCHINCDIR := $(TOOLSDIR)/arch/$(SRCARCH)/include 15BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool 16APIDIR := $(TOOLSINCDIR)/uapi 17ifneq ($(O),) 18GENDIR := $(O)/include/generated 19else 20GENDIR := $(abspath ../../../../include/generated) 21endif 22GENHDR := $(GENDIR)/autoconf.h 23PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config 24 25ifneq ($(wildcard $(GENHDR)),) 26 GENFLAGS := -DHAVE_GENHDR 27endif 28 29BPF_GCC ?= $(shell command -v bpf-gcc;) 30ifdef ASAN 31SAN_CFLAGS ?= -fsanitize=address -fno-omit-frame-pointer 32else 33SAN_CFLAGS ?= 34endif 35SAN_LDFLAGS ?= $(SAN_CFLAGS) 36RELEASE ?= 37OPT_FLAGS ?= $(if $(RELEASE),-O2,-O0) 38 39LIBELF_CFLAGS := $(shell $(PKG_CONFIG) libelf --cflags 2>/dev/null) 40LIBELF_LIBS := $(shell $(PKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf) 41 42SKIP_DOCS ?= 43SKIP_LLVM ?= 44SKIP_LIBBFD ?= 45SKIP_CRYPTO ?= 46 47ifeq ($(srctree),) 48srctree := $(patsubst %/,%,$(dir $(CURDIR))) 49srctree := $(patsubst %/,%,$(dir $(srctree))) 50srctree := $(patsubst %/,%,$(dir $(srctree))) 51srctree := $(patsubst %/,%,$(dir $(srctree))) 52endif 53 54CFLAGS += -g $(OPT_FLAGS) -rdynamic -std=gnu11 \ 55 -Wall -Werror -fno-omit-frame-pointer \ 56 -Wno-unused-but-set-variable \ 57 $(GENFLAGS) $(SAN_CFLAGS) $(LIBELF_CFLAGS) \ 58 -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \ 59 -I$(TOOLSINCDIR) -I$(TOOLSARCHINCDIR) -I$(APIDIR) -I$(OUTPUT) \ 60 -I$(CURDIR)/libarena/include 61LDFLAGS += $(SAN_LDFLAGS) 62LDLIBS += $(LIBELF_LIBS) -lz -lrt -lpthread 63 64PCAP_CFLAGS := $(shell $(PKG_CONFIG) --cflags libpcap 2>/dev/null && echo "-DTRAFFIC_MONITOR=1") 65PCAP_LIBS := $(shell $(PKG_CONFIG) --libs libpcap 2>/dev/null) 66LDLIBS += $(PCAP_LIBS) 67CFLAGS += $(PCAP_CFLAGS) 68 69# Some utility functions use LLVM libraries 70jit_disasm_helpers.c-CFLAGS = $(LLVM_CFLAGS) 71 72ifneq ($(LLVM),) 73# Silence some warnings when compiled with clang 74CFLAGS += -Wno-unused-command-line-argument 75endif 76 77# Check whether bpf cpu=v4 is supported or not by clang 78ifneq ($(shell $(CLANG) --target=bpf -mcpu=help 2>&1 | grep 'v4'),) 79CLANG_CPUV4 := 1 80endif 81 82# Order correspond to 'make run_tests' order 83TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_progs \ 84 test_sockmap \ 85 test_tcpnotify_user \ 86 test_progs-no_alu32 87TEST_INST_SUBDIRS := no_alu32 88 89# Also test bpf-gcc, if present 90ifneq ($(BPF_GCC),) 91TEST_GEN_PROGS += test_progs-bpf_gcc 92TEST_INST_SUBDIRS += bpf_gcc 93 94# The following tests contain C code that, although technically legal, 95# triggers GCC warnings that cannot be disabled: declaration of 96# anonymous struct types in function parameter lists. 97progs/btf_dump_test_case_bitfields.c-bpf_gcc-CFLAGS := -Wno-error 98progs/btf_dump_test_case_namespacing.c-bpf_gcc-CFLAGS := -Wno-error 99progs/btf_dump_test_case_packing.c-bpf_gcc-CFLAGS := -Wno-error 100progs/btf_dump_test_case_padding.c-bpf_gcc-CFLAGS := -Wno-error 101progs/btf_dump_test_case_syntax.c-bpf_gcc-CFLAGS := -Wno-error 102 103endif 104 105ifneq ($(CLANG_CPUV4),) 106TEST_GEN_PROGS += test_progs-cpuv4 107TEST_INST_SUBDIRS += cpuv4 108endif 109 110TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c) 111 112# Order correspond to 'make run_tests' order 113TEST_PROGS := test_kmod.sh \ 114 test_lirc_mode2.sh \ 115 test_bpftool_build.sh \ 116 test_doc_build.sh \ 117 test_xsk.sh \ 118 test_xdp_features.sh 119 120TEST_PROGS_EXTENDED := \ 121 ima_setup.sh verify_sig_setup.sh 122 123TEST_KMODS := bpf_testmod.ko bpf_test_no_cfi.ko bpf_test_modorder_x.ko \ 124 bpf_test_modorder_y.ko bpf_test_rqspinlock.ko 125TEST_KMOD_TARGETS = $(addprefix $(OUTPUT)/,$(TEST_KMODS)) 126 127# Compile but not part of 'make run_tests' 128TEST_GEN_PROGS_EXTENDED = \ 129 bench \ 130 flow_dissector_load \ 131 test_cpp \ 132 test_lirc_mode2_user \ 133 veristat \ 134 xdp_features \ 135 xdp_hw_metadata \ 136 xdp_synproxy \ 137 xskxceiver 138 139TEST_GEN_FILES += $(TEST_KMODS) liburandom_read.so urandom_read sign-file uprobe_multi 140 141ifneq ($(V),1) 142submake_extras := feature_display=0 143endif 144 145# override lib.mk's default rules 146OVERRIDE_TARGETS := 1 147override define CLEAN 148 $(call msg,CLEAN) 149 $(Q)$(RM) -r $(TEST_GEN_PROGS) 150 $(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED) 151 $(Q)$(RM) -r $(TEST_GEN_FILES) 152 $(Q)$(RM) -r $(TEST_KMODS) 153 $(Q)$(RM) -r $(EXTRA_CLEAN) 154 $(Q)$(MAKE) -C test_kmods clean 155 $(Q)$(MAKE) -C libarena clean 156 $(Q)$(MAKE) docs-clean 157endef 158 159include ../lib.mk 160 161NON_CHECK_FEAT_TARGETS := clean docs-clean 162CHECK_FEAT := $(filter-out $(NON_CHECK_FEAT_TARGETS),$(or $(MAKECMDGOALS), "none")) 163ifneq ($(CHECK_FEAT),) 164FEATURE_USER := .selftests 165FEATURE_TESTS := llvm 166FEATURE_DISPLAY := $(FEATURE_TESTS) 167 168# Makefile.feature expects OUTPUT to end with a slash 169ifeq ($(shell expr $(MAKE_VERSION) \>= 4.4), 1) 170$(let OUTPUT,$(OUTPUT)/,\ 171 $(eval include ../../../build/Makefile.feature)) 172else 173override OUTPUT := $(OUTPUT)/ 174$(eval include ../../../build/Makefile.feature) 175override OUTPUT := $(patsubst %/,%,$(OUTPUT)) 176endif 177endif 178 179ifneq ($(SKIP_LLVM),1) 180ifeq ($(feature-llvm),1) 181 LLVM_CFLAGS += -DHAVE_LLVM_SUPPORT 182 LLVM_CONFIG_LIB_COMPONENTS := mcdisassembler all-targets 183 # both llvm-config and lib.mk add -D_GNU_SOURCE, which ends up as conflict 184 LLVM_CFLAGS += $(filter-out -D_GNU_SOURCE,$(shell $(LLVM_CONFIG) --cflags)) 185 # Prefer linking statically if it's available, otherwise fallback to shared 186 ifeq ($(shell $(LLVM_CONFIG) --link-static --libs >/dev/null 2>&1 && echo static),static) 187 LLVM_LDLIBS += $(shell $(LLVM_CONFIG) --link-static --libs $(LLVM_CONFIG_LIB_COMPONENTS)) 188 LLVM_LDLIBS += $(filter-out -lxml2,$(shell $(LLVM_CONFIG) --link-static --system-libs $(LLVM_CONFIG_LIB_COMPONENTS))) 189 LLVM_LDLIBS += -lstdc++ 190 else 191 LLVM_LDLIBS += $(shell $(LLVM_CONFIG) --link-shared --libs $(LLVM_CONFIG_LIB_COMPONENTS)) 192 endif 193 LLVM_LDFLAGS += $(shell $(LLVM_CONFIG) --ldflags) 194endif 195endif 196 197SCRATCH_DIR := $(OUTPUT)/tools 198BUILD_DIR := $(SCRATCH_DIR)/build 199INCLUDE_DIR := $(SCRATCH_DIR)/include 200BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a 201ifneq ($(CROSS_COMPILE),) 202HOST_BUILD_DIR := $(BUILD_DIR)/host 203HOST_SCRATCH_DIR := $(OUTPUT)/host-tools 204HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include 205else 206HOST_BUILD_DIR := $(BUILD_DIR) 207HOST_SCRATCH_DIR := $(SCRATCH_DIR) 208HOST_INCLUDE_DIR := $(INCLUDE_DIR) 209endif 210HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a 211RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids 212VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \ 213 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \ 214 ../../../../vmlinux \ 215 /sys/kernel/btf/vmlinux \ 216 /boot/vmlinux-$(shell uname -r) 217VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) 218ifeq ($(VMLINUX_BTF),) 219$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)") 220endif 221 222# Define simple and short `make test_progs`, `make test_maps`, etc targets 223# to build individual tests. 224# NOTE: Semicolon at the end is critical to override lib.mk's default static 225# rule for binaries. 226$(notdir $(TEST_GEN_PROGS) $(TEST_KMODS) \ 227 $(TEST_GEN_PROGS_EXTENDED)): %: $(OUTPUT)/% ; 228 229# sort removes libbpf duplicates when not cross-building 230MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \ 231 $(BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/bpftool \ 232 $(HOST_BUILD_DIR)/resolve_btfids \ 233 $(INCLUDE_DIR)) 234$(MAKE_DIRS): 235 $(call msg,MKDIR,,$@) 236 $(Q)mkdir -p $@ 237 238$(OUTPUT)/%.o: %.c 239 $(call msg,CC,,$@) 240 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@ 241 242$(OUTPUT)/%:%.c 243 $(call msg,BINARY,,$@) 244 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@ 245 246# LLVM's ld.lld doesn't support all the architectures, so use it only on x86 247ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 riscv)) 248LLD := lld 249else 250LLD := $(shell command -v $(LD)) 251endif 252 253# Filter out -static for liburandom_read.so and its dependent targets so that static builds 254# do not fail. Static builds leave urandom_read relying on system-wide shared libraries. 255$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c liburandom_read.map 256 $(call msg,LIB,,$@) 257 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \ 258 $(filter-out -static,$(CFLAGS) $(LDFLAGS)) \ 259 $(filter %.c,$^) $(filter-out -static,$(LDLIBS)) \ 260 -Wno-unused-command-line-argument \ 261 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ 262 -Wl,--version-script=liburandom_read.map \ 263 -fPIC -shared -o $@ 264 265$(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so 266 $(call msg,BINARY,,$@) 267 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \ 268 $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \ 269 -Wno-unused-command-line-argument \ 270 -lurandom_read $(filter-out -static,$(LDLIBS)) -L$(OUTPUT) \ 271 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \ 272 -Wl,-rpath=. -o $@ 273 274$(OUTPUT)/sign-file: ../../../../scripts/sign-file.c 275 $(call msg,SIGN-FILE,,$@) 276 $(Q)$(CC) $(shell $(PKG_CONFIG) --cflags libcrypto 2> /dev/null) \ 277 -I$(srctree)/tools/include/uapi/ \ 278 $< -o $@ \ 279 $(shell $(PKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto) 280 281# This should really be a grouped target, but make versions before 4.3 don't 282# support that for regular rules. However, pattern matching rules are implicitly 283# treated as grouped even with older versions of make, so as a workaround, the 284# subst() turns the rule into a pattern matching rule 285$(addprefix test_kmods/,$(subst .ko,%ko,$(TEST_KMODS))): $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard test_kmods/Makefile test_kmods/*.[ch]) 286 $(Q)$(RM) test_kmods/*.ko test_kmods/*.mod.o # force re-compilation 287 $(Q)$(MAKE) $(submake_extras) -C test_kmods \ 288 RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) \ 289 EXTRA_CFLAGS='' EXTRA_LDFLAGS='' 290 291$(TEST_KMOD_TARGETS): $(addprefix test_kmods/,$(TEST_KMODS)) 292 $(call msg,MOD,,$@) 293 $(Q)cp test_kmods/$(@F) $@ 294 295 296DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool 297ifneq ($(CROSS_COMPILE),) 298CROSS_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool 299TRUNNER_BPFTOOL := $(CROSS_BPFTOOL) 300USE_BOOTSTRAP := "" 301else 302TRUNNER_BPFTOOL := $(DEFAULT_BPFTOOL) 303USE_BOOTSTRAP := "bootstrap/" 304endif 305 306TEST_GEN_PROGS_EXTENDED += $(TRUNNER_BPFTOOL) 307 308$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ) 309 310TESTING_HELPERS := $(OUTPUT)/testing_helpers.o 311CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o 312UNPRIV_HELPERS := $(OUTPUT)/unpriv_helpers.o 313TRACE_HELPERS := $(OUTPUT)/trace_helpers.o 314JSON_WRITER := $(OUTPUT)/json_writer.o 315CAP_HELPERS := $(OUTPUT)/cap_helpers.o 316NETWORK_HELPERS := $(OUTPUT)/network_helpers.o 317 318$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS) 319$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS) 320$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS) 321$(OUTPUT)/test_tag: $(TESTING_HELPERS) 322$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS) 323$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS) 324$(OUTPUT)/test_maps: $(TESTING_HELPERS) 325$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS) $(UNPRIV_HELPERS) 326$(OUTPUT)/xsk.o: $(BPFOBJ) 327 328BPFTOOL ?= $(DEFAULT_BPFTOOL) 329$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 330 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool 331 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 332 ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" \ 333 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS) $(EXTRA_CFLAGS)' \ 334 EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)' \ 335 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 336 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 337 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \ 338 SKIP_LLVM=$(SKIP_LLVM) \ 339 SKIP_LIBBFD=$(SKIP_LIBBFD) \ 340 SKIP_CRYPTO=$(SKIP_CRYPTO) \ 341 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin 342 343ifneq ($(CROSS_COMPILE),) 344$(CROSS_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 345 $(BPFOBJ) | $(BUILD_DIR)/bpftool 346 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 347 ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) \ 348 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS) $(EXTRA_CFLAGS)' \ 349 EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)' \ 350 OUTPUT=$(BUILD_DIR)/bpftool/ \ 351 LIBBPF_OUTPUT=$(BUILD_DIR)/libbpf/ \ 352 LIBBPF_DESTDIR=$(SCRATCH_DIR)/ \ 353 SKIP_LLVM=$(SKIP_LLVM) \ 354 SKIP_LIBBFD=$(SKIP_LIBBFD) \ 355 SKIP_CRYPTO=$(SKIP_CRYPTO) \ 356 prefix= DESTDIR=$(SCRATCH_DIR)/ install-bin 357endif 358 359ifneq ($(SKIP_DOCS),1) 360all: docs 361endif 362 363docs: 364 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \ 365 -f Makefile.docs \ 366 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 367 368docs-clean: 369 $(Q)$(MAKE) $(submake_extras) \ 370 -f Makefile.docs \ 371 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ 372 373$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 374 $(APIDIR)/linux/bpf.h \ 375 | $(BUILD_DIR)/libbpf 376 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \ 377 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS) $(EXTRA_CFLAGS)' \ 378 EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)' \ 379 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers 380 381ifneq ($(BPFOBJ),$(HOST_BPFOBJ)) 382$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 383 $(APIDIR)/linux/bpf.h \ 384 | $(HOST_BUILD_DIR)/libbpf 385 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \ 386 ARCH= CROSS_COMPILE= \ 387 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(EXTRA_CFLAGS)' \ 388 EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' \ 389 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 390 CC="$(HOSTCC)" LD="$(HOSTLD)" \ 391 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers 392endif 393 394# vmlinux.h is first dumped to a temporary file and then compared to 395# the previous version. This helps to avoid unnecessary re-builds of 396# $(TRUNNER_BPF_OBJS) 397$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR) 398ifeq ($(VMLINUX_H),) 399 $(call msg,GEN,,$@) 400 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $(INCLUDE_DIR)/.vmlinux.h.tmp 401 $(Q)cmp -s $(INCLUDE_DIR)/.vmlinux.h.tmp $@ || mv $(INCLUDE_DIR)/.vmlinux.h.tmp $@ 402else 403 $(call msg,CP,,$@) 404 $(Q)cp "$(VMLINUX_H)" $@ 405endif 406 407$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \ 408 $(TOOLSDIR)/bpf/resolve_btfids/main.c \ 409 $(TOOLSDIR)/lib/rbtree.c \ 410 $(TOOLSDIR)/lib/zalloc.c \ 411 $(TOOLSDIR)/lib/string.c \ 412 $(TOOLSDIR)/lib/ctype.c \ 413 $(TOOLSDIR)/lib/str_error_r.c 414 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \ 415 CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \ 416 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \ 417 EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)' \ 418 HOSTPKG_CONFIG='$(PKG_CONFIG)' \ 419 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ) 420 421# Get Clang's default includes on this system, as opposed to those seen by 422# '--target=bpf'. This fixes "missing" files on some architectures/distros, 423# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 424# 425# Use '-idirafter': Don't interfere with include mechanics except where the 426# build would have failed anyways. 427define get_sys_includes 428$(shell $(1) $(2) -v -E - </dev/null 2>&1 \ 429 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \ 430$(shell $(1) $(2) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') \ 431$(shell $(1) $(2) -dM -E - </dev/null | grep '__loongarch_grlen ' | awk '{printf("-D__BITS_PER_LONG=%d", $$3)}') \ 432$(shell $(1) $(2) -dM -E - </dev/null | grep -E 'MIPS(EL|EB)|_MIPS_SZ(PTR|LONG) |_MIPS_SIM |_ABI(O32|N32|64) ' | awk '{printf("-D%s=%s ", $$2, $$3)}') 433endef 434 435# Determine target endianness. 436IS_LITTLE_ENDIAN := $(shell $(CC) -dM -E - </dev/null | \ 437 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__') 438MENDIAN:=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian) 439BPF_TARGET_ENDIAN:=$(if $(IS_LITTLE_ENDIAN),--target=bpfel,--target=bpfeb) 440 441ifneq ($(CROSS_COMPILE),) 442CLANG_TARGET_ARCH = --target=$(notdir $(CROSS_COMPILE:%-=%)) 443endif 444 445CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG),$(CLANG_TARGET_ARCH)) 446BPF_CFLAGS = -g -Wall -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ 447 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \ 448 -I$(CURDIR)/libarena/include \ 449 -I$(abspath $(OUTPUT)/../usr/include) \ 450 -std=gnu11 \ 451 -fno-strict-aliasing \ 452 -Wno-microsoft-anon-tag \ 453 -fms-extensions \ 454 -Wno-compare-distinct-pointer-types \ 455 -Wno-initializer-overrides \ 456 # 457# TODO: enable me -Wsign-compare 458 459CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) 460 461$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline 462$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline 463 464$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h 465$(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup_getset_retval_hooks.h 466 467# Build BPF object using Clang 468# $1 - input .c file 469# $2 - output .o file 470# $3 - CFLAGS 471# $4 - binary name 472define CLANG_BPF_BUILD_RULE 473 $(call msg,CLNG-BPF,$4,$2) 474 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v3 -o $2 475endef 476# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32 477define CLANG_NOALU32_BPF_BUILD_RULE 478 $(call msg,CLNG-BPF,$4,$2) 479 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v2 -o $2 480endef 481# Similar to CLANG_BPF_BUILD_RULE, but with cpu-v4 482define CLANG_CPUV4_BPF_BUILD_RULE 483 $(call msg,CLNG-BPF,$4,$2) 484 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v4 -o $2 485endef 486# Build BPF object using GCC 487define GCC_BPF_BUILD_RULE 488 $(call msg,GCC-BPF,$4,$2) 489 $(Q)$(BPF_GCC) $3 -DBPF_NO_PRESERVE_ACCESS_INDEX -Wno-attributes -O2 -c $1 -o $2 490endef 491 492SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c 493 494LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \ 495 linked_vars.skel.h linked_maps.skel.h \ 496 test_subskeleton.skel.h test_subskeleton_lib.skel.h \ 497 test_usdt.skel.h 498 499LSKELS := fexit_sleep.c trace_printk.c trace_vprintk.c map_ptr_kern.c \ 500 core_kern.c core_kern_overflow.c test_ringbuf.c \ 501 test_ringbuf_n.c test_ringbuf_map_key.c test_ringbuf_write.c \ 502 test_ringbuf_overwrite.c 503 504LSKELS_SIGNED := fentry_test.c fexit_test.c atomics.c 505 506# Generate both light skeleton and libbpf skeleton for these 507LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test.c \ 508 kfunc_call_test_subprog.c 509SKEL_BLACKLIST += $$(LSKELS) $$(LSKELS_SIGNED) 510 511test_static_linked.skel.h-deps := test_static_linked1.bpf.o test_static_linked2.bpf.o 512linked_funcs.skel.h-deps := linked_funcs1.bpf.o linked_funcs2.bpf.o 513linked_vars.skel.h-deps := linked_vars1.bpf.o linked_vars2.bpf.o 514linked_maps.skel.h-deps := linked_maps1.bpf.o linked_maps2.bpf.o 515# In the subskeleton case, we want the test_subskeleton_lib.subskel.h file 516# but that's created as a side-effect of the skel.h generation. 517test_subskeleton.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o test_subskeleton.bpf.o 518test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o 519test_usdt.skel.h-deps := test_usdt.bpf.o test_usdt_multispec.bpf.o 520xsk_xdp_progs.skel.h-deps := xsk_xdp_progs.bpf.o 521xdp_hw_metadata.skel.h-deps := xdp_hw_metadata.bpf.o 522xdp_features.skel.h-deps := xdp_features.bpf.o 523 524LINKED_BPF_OBJS := $(foreach skel,$(LINKED_SKELS),$($(skel)-deps)) 525LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(LINKED_BPF_OBJS)) 526 527HEADERS_FOR_BPF_OBJS := $(wildcard $(BPFDIR)/*.bpf.h) \ 528 $(wildcard $(CURDIR)/libarena/include/*.[ch]) \ 529 $(addprefix $(BPFDIR)/, bpf_core_read.h \ 530 bpf_endian.h \ 531 bpf_helpers.h \ 532 bpf_tracing.h) 533 534# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on 535# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES. 536# Parameters: 537# $1 - test runner base binary name (e.g., test_progs) 538# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, bpf_gcc, etc) 539define DEFINE_TEST_RUNNER 540 541LSKEL_SIGN := -S -k $(PRIVATE_KEY) -i $(VERIFICATION_CERT) 542TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2 543TRUNNER_BINARY := $1$(if $2,-)$2 544TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \ 545 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c))) 546TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \ 547 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES))) 548TRUNNER_LIB_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \ 549 $$(filter %.c,$(TRUNNER_LIB_SOURCES))) 550TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES)) 551TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h 552TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c)) 553TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.bpf.o, $$(TRUNNER_BPF_SRCS)) 554TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \ 555 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\ 556 $$(TRUNNER_BPF_SRCS))) 557TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA)) 558TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS)) 559TRUNNER_BPF_LSKELS_SIGNED := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS_SIGNED)) 560TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS) 561 562# Evaluate rules now with extra TRUNNER_XXX variables above already defined 563$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2)) 564 565endef 566 567# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and 568# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with: 569# $1 - test runner base binary name (e.g., test_progs) 570# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, bpf_gcc, etc) 571define DEFINE_TEST_RUNNER_RULES 572 573ifeq ($($(TRUNNER_OUTPUT)-dir),) 574$(TRUNNER_OUTPUT)-dir := y 575$(TRUNNER_OUTPUT): 576 $$(call msg,MKDIR,,$$@) 577 $(Q)mkdir -p $$@ 578endif 579 580# ensure we set up BPF objects generation rule just once for a given 581# input/output directory combination 582ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),) 583$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y 584$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o: \ 585 $(TRUNNER_BPF_PROGS_DIR)/%.c \ 586 $(TRUNNER_BPF_PROGS_DIR)/*.h \ 587 $$(INCLUDE_DIR)/vmlinux.h \ 588 $(HEADERS_FOR_BPF_OBJS) \ 589 | $(TRUNNER_OUTPUT) $$(BPFOBJ) 590 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \ 591 $(TRUNNER_BPF_CFLAGS) \ 592 $$($$<-CFLAGS) \ 593 $$($$<-$2-CFLAGS),$(TRUNNER_BINARY)) 594 595$(TRUNNER_BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 596 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 597 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$< 598 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o) 599 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o) 600 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o) 601 $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$@ 602 $(Q)$$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$(@:.skel.h=.subskel.h) 603 $(Q)rm -f $$(<:.o=.linked1.o) $$(<:.o=.linked2.o) $$(<:.o=.linked3.o) 604 605$(TRUNNER_BPF_LSKELS): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 606 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 607 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$< 608 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o) 609 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o) 610 $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o) 611 $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@ 612 $(Q)rm -f $$(<:.o=.llinked1.o) $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o) 613 614$(TRUNNER_BPF_LSKELS_SIGNED): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT) 615 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY) (signed),$$@) 616 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$< 617 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o) 618 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o) 619 $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o) 620 $(Q)$$(BPFTOOL) gen skeleton $(LSKEL_SIGN) $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@ 621 $(Q)rm -f $$(<:.o=.llinked1.o) $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o) 622 623$(LINKED_BPF_OBJS): %: $(TRUNNER_OUTPUT)/% 624 625# .SECONDEXPANSION here allows to correctly expand %-deps variables as prerequisites 626.SECONDEXPANSION: 627$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_OUTPUT)/%: $$$$(%-deps) $(BPFTOOL) | $(TRUNNER_OUTPUT) 628 $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.bpf.o)) 629 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps)) 630 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o) 631 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o) 632 $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o) 633 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@) 634 $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@ 635 $(Q)$$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h) 636 $(Q)rm -f $$(@:.skel.h=.linked1.o) $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o) 637 638# When the compiler generates a %.d file, only skel basenames (not 639# full paths) are specified as prerequisites for corresponding %.o 640# file. vpath directives below instruct make to search for skel files 641# in TRUNNER_OUTPUT, if they are not present in the working directory. 642vpath %.skel.h $(TRUNNER_OUTPUT) 643vpath %.lskel.h $(TRUNNER_OUTPUT) 644vpath %.subskel.h $(TRUNNER_OUTPUT) 645 646endif 647 648# ensure we set up tests.h header generation rule just once 649ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),) 650$(TRUNNER_TESTS_DIR)-tests-hdr := y 651$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c 652 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@) 653 $$(shell (echo '/* Generated header, do not edit */'; \ 654 sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \ 655 $(TRUNNER_TESTS_DIR)/*.c | sort ; \ 656 ) > $$@) 657endif 658 659$(TRUNNER_OUTPUT)/resolve_btfids.test.o: $(RESOLVE_BTFIDS) $(TRUNNER_OUTPUT)/btf_data.bpf.o 660$(TRUNNER_OUTPUT)/resolve_btfids.test.o: private TEST_NEEDS_BTFIDS = 1 661 662# compile individual test files 663# Note: we cd into output directory to ensure embedded BPF object is found 664$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \ 665 $(TRUNNER_TESTS_DIR)/%.c \ 666 | $(TRUNNER_OUTPUT)/%.test.d 667 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@) 668 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -MMD -MT $$@ -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F) 669 $$(if $$(TEST_NEEDS_BTFIDS), \ 670 $$(call msg,BTFIDS,$(TRUNNER_BINARY),$$@) \ 671 $(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.bpf.o $$@; \ 672 $(RESOLVE_BTFIDS) --patch_btfids $$@.BTF_ids $$@) 673 674$(TRUNNER_TEST_OBJS:.o=.d): $(TRUNNER_OUTPUT)/%.test.d: \ 675 $(TRUNNER_TESTS_DIR)/%.c \ 676 $(TRUNNER_EXTRA_HDRS) \ 677 $(TRUNNER_BPF_SKELS) \ 678 $(TRUNNER_BPF_LSKELS) \ 679 $(TRUNNER_BPF_LSKELS_SIGNED) \ 680 $(TRUNNER_BPF_SKELS_LINKED) \ 681 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 682 683ifeq ($(filter clean docs-clean,$(MAKECMDGOALS)),) 684include $(wildcard $(TRUNNER_TEST_OBJS:.o=.d)) 685endif 686 687# add per extra obj CFGLAGS definitions 688$(foreach N,$(patsubst $(TRUNNER_OUTPUT)/%.o,%,$(TRUNNER_EXTRA_OBJS)), \ 689 $(eval $(TRUNNER_OUTPUT)/$(N).o: CFLAGS += $($(N).c-CFLAGS))) 690 691$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \ 692 %.c \ 693 $(TRUNNER_EXTRA_HDRS) \ 694 $(VERIFY_SIG_HDR) \ 695 $(TRUNNER_TESTS_HDR) \ 696 $$(BPFOBJ) | $(TRUNNER_OUTPUT) 697 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@) 698 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@ 699 700$(TRUNNER_LIB_OBJS): $(TRUNNER_OUTPUT)/%.o:$(TOOLSDIR)/lib/%.c 701 $$(call msg,LIB-OBJ,$(TRUNNER_BINARY),$$@) 702 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@ 703 704# non-flavored in-srctree builds receive special treatment, in particular, we 705# do not need to copy extra resources (see e.g. test_btf_dump_case()) 706$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT) 707ifneq ($2:$(OUTPUT),:$(shell pwd)) 708 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES)) 709 $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/ 710endif 711 712# some X.test.o files have runtime dependencies on Y.bpf.o files 713$(OUTPUT)/$(TRUNNER_BINARY): | $(TRUNNER_BPF_OBJS) 714 715$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \ 716 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \ 717 $(TRUNNER_LIB_OBJS) \ 718 $(TRUNNER_BPFTOOL) \ 719 $(OUTPUT)/veristat \ 720 | $(TRUNNER_BINARY)-extras 721 $$(call msg,BINARY,,$$@) 722 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) $$(LLVM_LDLIBS) $$(LDFLAGS) $$(LLVM_LDFLAGS) -o $$@ 723 $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/$(USE_BOOTSTRAP)bpftool \ 724 $(OUTPUT)/$(if $2,$2/)bpftool 725 726endef 727 728VERIFY_SIG_SETUP := $(CURDIR)/verify_sig_setup.sh 729VERIFY_SIG_HDR := verification_cert.h 730VERIFICATION_CERT := $(BUILD_DIR)/signing_key.der 731PRIVATE_KEY := $(BUILD_DIR)/signing_key.pem 732 733$(VERIFICATION_CERT) $(PRIVATE_KEY): $(VERIFY_SIG_SETUP) 734 $(Q)mkdir -p $(BUILD_DIR) 735 $(Q)$(VERIFY_SIG_SETUP) genkey $(BUILD_DIR) 736 737# Generates a header with C array declaration, containing test_progs_verification_cert bytes 738$(VERIFY_SIG_HDR): $(VERIFICATION_CERT) 739 $(Q)(echo "unsigned char test_progs_verification_cert[] = {"; \ 740 od -v -t 'xC' -w12 $< | sed 's/ \(\S\+\)/ 0x\1,/g;s/^\S\+/ /;$$d'; \ 741 echo "};"; \ 742 echo "unsigned int test_progs_verification_cert_len = $$(wc -c < $<);") > $@ 743 744LIBARENA_MAKE_ARGS = \ 745 BPFTOOL="$(BPFTOOL)" \ 746 INCLUDE_DIR="$(INCLUDE_DIR)" \ 747 LIBBPF_INCLUDE="$(HOST_INCLUDE_DIR)" \ 748 BPFOBJ="$(BPFOBJ)" \ 749 LDLIBS="$(LDLIBS) -lzstd" \ 750 CLANG="$(CLANG)" \ 751 BPF_CFLAGS="$(BPF_CFLAGS) $(CLANG_CFLAGS)" \ 752 BPF_TARGET_ENDIAN="$(BPF_TARGET_ENDIAN)" \ 753 Q="$(Q)" 754 755LIBARENA_BPF_DEPS := $(wildcard libarena/Makefile \ 756 libarena/include/* \ 757 libarena/include/libarena/* \ 758 libarena/src/* \ 759 libarena/selftests/* \ 760 libarena/*.bpf.o) 761 762LIBARENA_SKEL := libarena/libarena.skel.h 763 764$(LIBARENA_SKEL): $(INCLUDE_DIR)/vmlinux.h $(BPFOBJ) $(LIBARENA_BPF_DEPS) 765 +$(MAKE) -C libarena libarena.skel.h $(LIBARENA_MAKE_ARGS) 766 767# Define test_progs test runner. 768TRUNNER_TESTS_DIR := prog_tests 769TRUNNER_BPF_PROGS_DIR := progs 770TRUNNER_EXTRA_SOURCES := test_progs.c \ 771 cgroup_helpers.c \ 772 trace_helpers.c \ 773 network_helpers.c \ 774 testing_helpers.c \ 775 btf_helpers.c \ 776 cap_helpers.c \ 777 unpriv_helpers.c \ 778 sysctl_helpers.c \ 779 netlink_helpers.c \ 780 jit_disasm_helpers.c \ 781 io_helpers.c \ 782 test_loader.c \ 783 xsk.c \ 784 disasm.c \ 785 disasm_helpers.c \ 786 json_writer.c \ 787 $(VERIFY_SIG_HDR) \ 788 flow_dissector_load.h \ 789 ip_check_defrag_frags.h \ 790 bpftool_helpers.c \ 791 usdt_1.c usdt_2.c 792TRUNNER_LIB_SOURCES := find_bit.c 793TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read \ 794 $(OUTPUT)/liburandom_read.so \ 795 $(OUTPUT)/xdp_synproxy \ 796 $(OUTPUT)/sign-file \ 797 $(OUTPUT)/uprobe_multi \ 798 $(TEST_KMOD_TARGETS) \ 799 ima_setup.sh \ 800 $(VERIFY_SIG_SETUP) \ 801 $(wildcard progs/btf_dump_test_case_*.c) \ 802 $(wildcard progs/*.bpf.o) 803TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE 804TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS 805$(eval $(call DEFINE_TEST_RUNNER,test_progs)) 806 807# Define test_progs-no_alu32 test runner. 808TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE 809TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) 810$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32)) 811 812# Define test_progs-cpuv4 test runner. 813ifneq ($(CLANG_CPUV4),) 814TRUNNER_BPF_BUILD_RULE := CLANG_CPUV4_BPF_BUILD_RULE 815TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS 816$(eval $(call DEFINE_TEST_RUNNER,test_progs,cpuv4)) 817endif 818 819# Define test_progs BPF-GCC-flavored test runner. 820ifneq ($(BPF_GCC),) 821TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE 822TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc,) 823$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc)) 824endif 825 826# Define test_maps test runner. 827TRUNNER_TESTS_DIR := map_tests 828TRUNNER_BPF_PROGS_DIR := progs 829TRUNNER_EXTRA_SOURCES := test_maps.c 830TRUNNER_LIB_SOURCES := 831TRUNNER_EXTRA_FILES := 832TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built) 833TRUNNER_BPF_CFLAGS := 834$(eval $(call DEFINE_TEST_RUNNER,test_maps)) 835 836# Define test_verifier test runner. 837# It is much simpler than test_maps/test_progs and sufficiently different from 838# them (e.g., test.h is using completely pattern), that it's worth just 839# explicitly defining all the rules explicitly. 840verifier/tests.h: verifier/*.c 841 $(shell ( cd verifier/; \ 842 echo '/* Generated header, do not edit */'; \ 843 echo '#ifdef FILL_ARRAY'; \ 844 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \ 845 echo '#endif' \ 846 ) > verifier/tests.h) 847$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT) 848 $(call msg,BINARY,,$@) 849 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 850 851# Include find_bit.c to compile xskxceiver. 852EXTRA_SRC := $(TOOLSDIR)/lib/find_bit.c prog_tests/test_xsk.c prog_tests/test_xsk.h 853$(OUTPUT)/xskxceiver: $(EXTRA_SRC) xskxceiver.c xskxceiver.h $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xsk_xdp_progs.skel.h $(BPFOBJ) | $(OUTPUT) 854 $(call msg,BINARY,,$@) 855 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 856 857$(OUTPUT)/xdp_hw_metadata: xdp_hw_metadata.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xdp_hw_metadata.skel.h | $(OUTPUT) 858 $(call msg,BINARY,,$@) 859 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 860 861$(OUTPUT)/xdp_features: xdp_features.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xdp_features.skel.h | $(OUTPUT) 862 $(call msg,BINARY,,$@) 863 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@ 864 865# Make sure we are able to include and link libbpf against c++. 866CXXFLAGS += $(CFLAGS) 867CXXFLAGS := $(subst -D_GNU_SOURCE=,,$(CXXFLAGS)) 868CXXFLAGS := $(subst -std=gnu11,-std=gnu++11,$(CXXFLAGS)) 869$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ) 870 $(call msg,CXX,,$@) 871 $(Q)$(CXX) $(CXXFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@ 872 873# Benchmark runner 874$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ) 875 $(call msg,CC,,$@) 876 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@ 877$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h 878$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h 879$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \ 880 $(OUTPUT)/perfbuf_bench.skel.h 881$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h 882$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h 883$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h 884$(OUTPUT)/bench_bpf_hashmap_full_update.o: $(OUTPUT)/bpf_hashmap_full_update_bench.skel.h 885$(OUTPUT)/bench_local_storage.o: $(OUTPUT)/local_storage_bench.skel.h 886$(OUTPUT)/bench_local_storage_rcu_tasks_trace.o: $(OUTPUT)/local_storage_rcu_tasks_trace_bench.skel.h 887$(OUTPUT)/bench_local_storage_create.o: $(OUTPUT)/bench_local_storage_create.skel.h 888$(OUTPUT)/bench_bpf_hashmap_lookup.o: $(OUTPUT)/bpf_hashmap_lookup.skel.h 889$(OUTPUT)/bench_htab_mem.o: $(OUTPUT)/htab_mem_bench.skel.h 890$(OUTPUT)/bench_bpf_crypto.o: $(OUTPUT)/crypto_bench.skel.h 891$(OUTPUT)/bench_sockmap.o: $(OUTPUT)/bench_sockmap_prog.skel.h 892$(OUTPUT)/bench_lpm_trie_map.o: $(OUTPUT)/lpm_trie_bench.skel.h $(OUTPUT)/lpm_trie_map.skel.h 893$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ) 894$(OUTPUT)/bench: LDLIBS += -lm 895$(OUTPUT)/bench: $(OUTPUT)/bench.o \ 896 $(TESTING_HELPERS) \ 897 $(TRACE_HELPERS) \ 898 $(CGROUP_HELPERS) \ 899 $(OUTPUT)/bench_count.o \ 900 $(OUTPUT)/bench_rename.o \ 901 $(OUTPUT)/bench_trigger.o \ 902 $(OUTPUT)/bench_ringbufs.o \ 903 $(OUTPUT)/bench_bloom_filter_map.o \ 904 $(OUTPUT)/bench_bpf_loop.o \ 905 $(OUTPUT)/bench_strncmp.o \ 906 $(OUTPUT)/bench_bpf_hashmap_full_update.o \ 907 $(OUTPUT)/bench_local_storage.o \ 908 $(OUTPUT)/bench_local_storage_rcu_tasks_trace.o \ 909 $(OUTPUT)/bench_bpf_hashmap_lookup.o \ 910 $(OUTPUT)/bench_local_storage_create.o \ 911 $(OUTPUT)/bench_htab_mem.o \ 912 $(OUTPUT)/bench_bpf_crypto.o \ 913 $(OUTPUT)/bench_sockmap.o \ 914 $(OUTPUT)/bench_lpm_trie_map.o \ 915 $(OUTPUT)/usdt_1.o \ 916 $(OUTPUT)/usdt_2.o \ 917 # 918 $(call msg,BINARY,,$@) 919 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ 920 921# This works around GCC warning about snprintf truncating strings like: 922# 923# char a[PATH_MAX], b[PATH_MAX]; 924# snprintf(a, "%s/foo", b); // triggers -Wformat-truncation 925$(OUTPUT)/veristat.o: CFLAGS += -Wno-format-truncation 926$(OUTPUT)/veristat.o: $(BPFOBJ) 927$(OUTPUT)/veristat: $(OUTPUT)/veristat.o 928 $(call msg,BINARY,,$@) 929 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ 930 931# Linking uprobe_multi can fail due to relocation overflows on mips. 932$(OUTPUT)/uprobe_multi: CFLAGS += $(if $(filter mips, $(ARCH)),-mxgot) 933$(OUTPUT)/uprobe_multi: uprobe_multi.c uprobe_multi.ld 934 $(call msg,BINARY,,$@) 935 $(Q)$(CC) $(CFLAGS) -Wl,-T,uprobe_multi.ld -O0 $(LDFLAGS) \ 936 $(filter-out %.ld,$^) $(LDLIBS) -o $@ 937 938EXTRA_CLEAN := $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \ 939 prog_tests/tests.h map_tests/tests.h verifier/tests.h \ 940 feature bpftool $(TEST_KMOD_TARGETS) \ 941 $(addprefix $(OUTPUT)/,*.o *.d *.skel.h *.lskel.h *.subskel.h \ 942 *.BTF *.BTF_ids *.BTF.base \ 943 no_alu32 cpuv4 bpf_gcc \ 944 liburandom_read.so) \ 945 $(OUTPUT)/FEATURE-DUMP.selftests 946 947.PHONY: docs docs-clean 948 949# Delete partially updated (corrupted) files on error 950.DELETE_ON_ERROR: 951 952DEFAULT_INSTALL_RULE := $(INSTALL_RULE) 953override define INSTALL_RULE 954 $(DEFAULT_INSTALL_RULE) 955 @for DIR in $(TEST_INST_SUBDIRS); do \ 956 mkdir -p $(INSTALL_PATH)/$$DIR; \ 957 rsync -a $(OUTPUT)/$$DIR/*.bpf.o $(INSTALL_PATH)/$$DIR;\ 958 done 959endef 960 961libarena: $(LIBARENA_SKEL) 962