path: root/tools/testing/selftests/bpf/Makefile

# SPDX-License-Identifier: GPL-2.0
include ../../../build/Build.include
include ../../../scripts/Makefile.arch
include ../../../scripts/Makefile.include

CXX ?= $(CROSS_COMPILE)g++
OBJCOPY ?= $(CROSS_COMPILE)objcopy

CURDIR := $(abspath .)
TOOLSDIR := $(abspath ../../..)
LIBDIR := $(TOOLSDIR)/lib
BPFDIR := $(LIBDIR)/bpf
TOOLSINCDIR := $(TOOLSDIR)/include
TOOLSARCHINCDIR := $(TOOLSDIR)/arch/$(SRCARCH)/include
BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool
APIDIR := $(TOOLSINCDIR)/uapi
ifneq ($(O),)
GENDIR := $(O)/include/generated
else
GENDIR := $(abspath ../../../../include/generated)
endif
GENHDR := $(GENDIR)/autoconf.h
PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config

ifneq ($(wildcard $(GENHDR)),)
  GENFLAGS := -DHAVE_GENHDR
endif

BPF_GCC		?= $(shell command -v bpf-gcc;)
ifdef ASAN
SAN_CFLAGS 	?= -fsanitize=address -fno-omit-frame-pointer
else
SAN_CFLAGS	?=
endif
SAN_LDFLAGS	?= $(SAN_CFLAGS)
RELEASE		?=
OPT_FLAGS	?= $(if $(RELEASE),-O2,-O0)

LIBELF_CFLAGS	:= $(shell $(PKG_CONFIG) libelf --cflags 2>/dev/null)
LIBELF_LIBS	:= $(shell $(PKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf)

SKIP_DOCS	?=
SKIP_LLVM	?=
SKIP_LIBBFD	?=
SKIP_CRYPTO	?=

# When BPF_STRICT_BUILD is 1, any BPF object, skeleton, test object, or
# benchmark compilation failure is fatal. Set to 0 to tolerate failures
# and continue building the remaining tests.
BPF_STRICT_BUILD ?= 1
PERMISSIVE := $(filter 0,$(BPF_STRICT_BUILD))

ifeq ($(srctree),)
srctree := $(patsubst %/,%,$(dir $(CURDIR)))
srctree := $(patsubst %/,%,$(dir $(srctree)))
srctree := $(patsubst %/,%,$(dir $(srctree)))
srctree := $(patsubst %/,%,$(dir $(srctree)))
endif

COMMON_CFLAGS = -g $(OPT_FLAGS) -rdynamic -std=gnu11				\
	  -Wall -Werror -fno-omit-frame-pointer				\
	  -Wno-unused-but-set-variable					\
	  $(GENFLAGS) $(SAN_CFLAGS) $(LIBELF_CFLAGS)			\
	  -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR)		\
	  -I$(TOOLSINCDIR) -I$(TOOLSARCHINCDIR) -I$(APIDIR) -I$(OUTPUT)	\
	  -I$(CURDIR)/libarena/include
LDFLAGS += $(SAN_LDFLAGS)
LDLIBS += $(LIBELF_LIBS) -lz -lrt -lpthread

PCAP_CFLAGS	:= $(shell $(PKG_CONFIG) --cflags libpcap 2>/dev/null && echo "-DTRAFFIC_MONITOR=1")
PCAP_LIBS	:= $(shell $(PKG_CONFIG) --libs libpcap 2>/dev/null)
LDLIBS += $(PCAP_LIBS)
CFLAGS += $(COMMON_CFLAGS) $(PCAP_CFLAGS)

# Some utility functions use LLVM libraries
jit_disasm_helpers.c-CFLAGS = $(LLVM_CFLAGS)

ifneq ($(LLVM),)
# Silence some warnings when compiled with clang
CFLAGS += -Wno-unused-command-line-argument
endif

# Check whether bpf cpu=v4 is supported or not by clang
ifneq ($(shell $(CLANG) --target=bpf -mcpu=help 2>&1 | grep 'v4'),)
CLANG_CPUV4 := 1
endif

# Check whether clang supports BPF address sanitizer (requires LLVM 22+)
CLANG_HAS_ARENA_ASAN := $(shell echo 'int x;' | \
	$(CLANG) --target=bpf -fsanitize=kernel-address \
	-mllvm -asan-shadow-addr-space=1 \
	-x c -c - -o /dev/null 2>/dev/null && echo 1)

# Order correspond to 'make run_tests' order
TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_progs \
	test_sockmap \
	test_tcpnotify_user \
	test_progs-no_alu32
TEST_INST_SUBDIRS := no_alu32

# Also test bpf-gcc, if present
ifneq ($(BPF_GCC),)
TEST_GEN_PROGS += test_progs-bpf_gcc
TEST_INST_SUBDIRS += bpf_gcc

# The following tests contain C code that, although technically legal,
# triggers GCC warnings that cannot be disabled: declaration of
# anonymous struct types in function parameter lists.
progs/btf_dump_test_case_bitfields.c-bpf_gcc-CFLAGS := -Wno-error
progs/btf_dump_test_case_namespacing.c-bpf_gcc-CFLAGS := -Wno-error
progs/btf_dump_test_case_packing.c-bpf_gcc-CFLAGS := -Wno-error
progs/btf_dump_test_case_padding.c-bpf_gcc-CFLAGS := -Wno-error
progs/btf_dump_test_case_syntax.c-bpf_gcc-CFLAGS := -Wno-error

endif

ifneq ($(CLANG_CPUV4),)
TEST_GEN_PROGS += test_progs-cpuv4
TEST_INST_SUBDIRS += cpuv4
endif

TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c)

# Order correspond to 'make run_tests' order
TEST_PROGS := test_kmod.sh \
	test_lirc_mode2.sh \
	test_bpftool_build.sh \
	test_doc_build.sh \
	test_xsk.sh \
	test_xdp_features.sh

TEST_PROGS_EXTENDED := \
	ima_setup.sh verify_sig_setup.sh

TEST_KMODS := bpf_testmod.ko bpf_test_no_cfi.ko bpf_test_modorder_x.ko \
	bpf_test_modorder_y.ko bpf_test_rqspinlock.ko
TEST_KMOD_TARGETS = $(addprefix $(OUTPUT)/,$(TEST_KMODS))

# Compile but not part of 'make run_tests'
TEST_GEN_PROGS_EXTENDED = \
	bench \
	flow_dissector_load \
	test_cpp \
	test_lirc_mode2_user \
	veristat \
	xdp_features \
	xdp_hw_metadata \
	xdp_synproxy \
	xskxceiver

TEST_GEN_FILES += $(TEST_KMODS) liburandom_read.so urandom_read sign-file uprobe_multi

ifneq ($(V),1)
submake_extras := feature_display=0
endif

# override lib.mk's default rules
OVERRIDE_TARGETS := 1
override define CLEAN
	$(call msg,CLEAN)
	$(Q)$(RM) -r $(TEST_GEN_PROGS)
	$(Q)$(