# SPDX-License-Identifier: GPL-2.0include ../../../build/Build.includeinclude ../../../scripts/Makefile.archinclude ../../../scripts/Makefile.include OBJCOPY ?= $(CROSS_COMPILE)objcopy CURDIR := $(abspath .)TOOLSDIR := $(abspath ../../..)LIBDIR := $(TOOLSDIR)/libBPFDIR := $(LIBDIR)/bpfTOOLSINCDIR := $(TOOLSDIR)/includeTOOLSARCHINCDIR := $(TOOLSDIR)/arch/$(SRCARCH)/includeBPFTOOLDIR := $(TOOLSDIR)/bpf/bpftoolAPIDIR := $(TOOLSINCDIR)/uapiifneq ($(O),)GENDIR := $(O)/include/generatedelseGENDIR := $(abspath ../../../../include/generated)endifGENHDR := $(GENDIR)/autoconf.hPKG_CONFIG ?= $(CROSS_COMPILE)pkg-config ifneq ($(wildcard $(GENHDR)),)  GENFLAGS := -DHAVE_GENHDRendif BPF_GCC		?= $(shell command -v bpf-gcc;)ifdef ASANSAN_CFLAGS 	?= -fsanitize=address -fno-omit-frame-pointerelseSAN_CFLAGS	?=endifSAN_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 ?= 1PERMISSIVE := $(filter 0,$(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/includeLDFLAGS += $(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 librariesjit_disasm_helpers.c-CFLAGS = $(LLVM_CFLAGS) ifneq ($(LLVM),)# Silence some warnings when compiled with clangCFLAGS += -Wno-unused-command-line-argumentendif # Check whether bpf cpu=v4 is supported or not by clangifneq ($(shell $(CLANG) --target=bpf -mcpu=help 2>&1 | grep 'v4'),)CLANG_CPUV4 := 1endif # Check whether clang supports BPF address sanitizer (requires LLVM 22+)CLANG_HAS_ARENA_ASAN := $(shell echo 'int x;' | \	$(CLANG) --target=bpf -fsanitize=kernel-address \	-mllvm -asan-shadow-addr-space=1 \	-x c -c - -o /dev/null 2>/dev/null && echo 1) # Order correspond to 'make run_tests' orderTEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_progs \	test_sockmap \	test_tcpnotify_user \	test_progs-no_alu32TEST_INST_SUBDIRS := no_alu32 # Also test bpf-gcc, if presentifneq ($(BPF_GCC),)TEST_GEN_PROGS += test_progs-bpf_gccTEST_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-errorprogs/btf_dump_test_case_namespacing.c-bpf_gcc-CFLAGS := -Wno-errorprogs/btf_dump_test_case_packing.c-bpf_gcc-CFLAGS := -Wno-errorprogs/btf_dump_test_case_padding.c-bpf_gcc-CFLAGS := -Wno-errorprogs/btf_dump_test_case_syntax.c-bpf_gcc-CFLAGS := -Wno-error endif ifneq ($(CLANG_CPUV4),)TEST_GEN_PROGS += test_progs-cpuv4TEST_INST_SUBDIRS += cpuv4endif TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c) # Order correspond to 'make run_tests' orderTEST_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.koTEST_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=0endif # override lib.mk's default rulesOVERRIDE_TARGETS := 1override define CLEAN	$(call msg,CLEAN)	$(Q)$(RM) -r $(TEST_GEN_PROGS)	$(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED)	$(Q)$(RM) -r $(TEST_GEN_FILES)	$(Q)$(RM) -r $(TEST_KMODS)	$(Q)$(RM) -r $(EXTRA_CLEAN)	$(Q)$(MAKE) -C test_kmods clean	$(Q)$(MAKE) -C libarena clean	$(Q)$(MAKE) docs-cleanendef include ../lib.mk NON_CHECK_FEAT_TARGETS := clean docs-clean emit_testsCHECK_FEAT := $(filter-out $(NON_CHECK_FEAT_TARGETS),$(or $(MAKECMDGOALS), "none"))ifneq ($(CHECK_FEAT),)FEATURE_USER := .selftestsFEATURE_TESTS := llvmFEATURE_DISPLAY := $(FEATURE_TESTS) # Makefile.feature expects OUTPUT to end with a slashifeq ($(shell expr $(MAKE_VERSION) \>= 4.4), 1)$(let OUTPUT,$(OUTPUT)/,\	$(eval include ../../../build/Makefile.feature))elseoverride OUTPUT := $(OUTPUT)/$(eval include ../../../build/Makefile.feature)override OUTPUT := $(patsubst %/,%,$(OUTPUT))endifendif ifneq ($(SKIP_LLVM),1)ifeq ($(feature-llvm),1)  LLVM_CFLAGS  += -DHAVE_LLVM_SUPPORT  LLVM_CONFIG_LIB_COMPONENTS := mcdisassembler all-targets  # both llvm-config and lib.mk add -D_GNU_SOURCE, which ends up as conflict  LLVM_CFLAGS  += $(filter-out -D_GNU_SOURCE,$(shell $(LLVM_CONFIG) --cflags))  # Cross compilation must use dynamic linking to avoid unresolved library  # dependencies. For native build, prefer linking statically if it's  # available, otherwise fallback to shared.  ifneq ($(ARCH), $(HOSTARCH))    LLVM_LINK_STATIC :=  else    LLVM_LINK_STATIC := $(shell $(LLVM_CONFIG) --link-static --libs >/dev/null 2>&1 && echo y)  endif  ifeq ($(LLVM_LINK_STATIC),y)    LLVM_LDLIBS  += $(shell $(LLVM_CONFIG) --link-static --libs $(LLVM_CONFIG_LIB_COMPONENTS))    LLVM_LDLIBS  += $(filter-out -lxml2,$(shell $(LLVM_CONFIG) --link-static --system-libs $(LLVM_CONFIG_LIB_COMPONENTS)))    LLVM_LDLIBS  += -lstdc++  else    LLVM_LDLIBS  += $(shell $(LLVM_CONFIG) --link-shared --libs $(LLVM_CONFIG_LIB_COMPONENTS))  endif  LLVM_LDFLAGS += $(shell $(LLVM_CONFIG) --ldflags)endifendif SCRATCH_DIR := $(OUTPUT)/toolsBUILD_DIR := $(SCRATCH_DIR)/buildINCLUDE_DIR := $(SCRATCH_DIR)/includeBPFOBJ := $(BUILD_DIR)/libbpf/libbpf.aifneq ($(CROSS_COMPILE),)HOST_BUILD_DIR		:= $(BUILD_DIR)/hostHOST_SCRATCH_DIR	:= $(OUTPUT)/host-toolsHOST_INCLUDE_DIR	:= $(HOST_SCRATCH_DIR)/includeelseHOST_BUILD_DIR		:= $(BUILD_DIR)HOST_SCRATCH_DIR	:= $(SCRATCH_DIR)HOST_INCLUDE_DIR	:= $(INCLUDE_DIR)endifHOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.aRESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfidsVMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux)				\		     $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux)	\		     ../../../../vmlinux				\		     /sys/kernel/btf/vmlinux				\		     /boot/vmlinux-$(shell uname -r)VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))ifeq ($(VMLINUX_BTF),)$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)")endif # Define simple and short `make test_progs`, `make test_maps`, etc targets# to build individual tests.# NOTE: Semicolon at the end is critical to override lib.mk's default static# rule for binaries.$(notdir $(TEST_GEN_PROGS) $(TEST_KMODS)				\	 $(TEST_GEN_PROGS_EXTENDED)): %: $(OUTPUT)/% ; # sort removes libbpf duplicates when not cross-buildingMAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf	\	       $(BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/bpftool		\	       $(HOST_BUILD_DIR)/resolve_btfids				\	       $(INCLUDE_DIR))$(MAKE_DIRS):	$(call msg,MKDIR,,$@)	$(Q)mkdir -p $@ $(OUTPUT)/%.o: %.c	$(call msg,CC,,$@)	$(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@ $(OUTPUT)/%:%.c	$(call msg,BINARY,,$@)	$(Q)$(LINK.c) $^ $(LDLIBS) -o $@ # LLVM's ld.lld doesn't support all the architectures, so use it only on x86ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 riscv))LLD := lldelseLLD := $(shell command -v $(LD))endif # Filter out -static for liburandom_read.so and its dependent targets so that static builds# do not fail. Static builds leave urandom_read relying on system-wide shared libraries.$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c liburandom_read.map	$(call msg,LIB,,$@)	$(Q)$(CLANG) $(CLANG_TARGET_ARCH) \		     $(filter-out -static,$(COMMON_CFLAGS) $(LDFLAGS)) \		     $(filter %.c,$^) $(filter-out -static,$(LDLIBS)) \		     -Wno-unused-command-line-argument \		     -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \		     -Wl,--version-script=liburandom_read.map \		     -fPIC -shared -o $@ $(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so	$(call msg,BINARY,,$@)	$(Q)$(CLANG) $(CLANG_TARGET_ARCH) \		     $(filter-out -static,$(COMMON_CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \		     -Wno-unused-command-line-argument \		     -lurandom_read $(filter-out -static,$(LDLIBS)) -L$(OUTPUT) \		     -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \		     -Wl,-rpath=. -o $@ $(OUTPUT)/sign-file: ../../../../scripts/sign-file.c	$(call msg,SIGN-FILE,,$@)	$(Q)$(CC) $(shell $(PKG_CONFIG) --cflags libcrypto 2> /dev/null) \		  -I$(srctree)/tools/include/uapi/ \		  $< -o $@ \		  $(shell $(PKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto) # This should really be a grouped target, but make versions before 4.3 don't# support that for regular rules. However, pattern matching rules are implicitly# treated as grouped even with older versions of make, so as a workaround, the# subst() turns the rule into a pattern matching rule$(addprefix test_kmods/,$(subst .ko,%ko,$(TEST_KMODS))): $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard test_kmods/Makefile test_kmods/*.[ch])	$(Q)$(RM) test_kmods/*.ko test_kmods/*.mod.o # force re-compilation	$(Q)$(MAKE) $(submake_extras) -C test_kmods				\		$(if $(O),O=$(abspath $(O)))					\		$(if $(KBUILD_OUTPUT),KBUILD_OUTPUT=$(abspath $(KBUILD_OUTPUT)))\		RESOLVE_BTFIDS=$(RESOLVE_BTFIDS)				\		EXTRA_CFLAGS='' EXTRA_LDFLAGS='' $(TEST_KMOD_TARGETS): $(addprefix test_kmods/,$(TEST_KMODS))	$(call msg,MOD,,$@)	$(Q)$(if $(PERMISSIVE),if [ -f test_kmods/$(@F) ]; then )cp test_kmods/$(@F) $@$(if $(PERMISSIVE),; fi)  DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftoolifneq ($(CROSS_COMPILE),)CROSS_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftoolTRUNNER_BPFTOOL := $(CROSS_BPFTOOL)USE_BOOTSTRAP := ""elseTRUNNER_BPFTOOL := $(DEFAULT_BPFTOOL)USE_BOOTSTRAP := "bootstrap/"endif $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ) TESTING_HELPERS	:= $(OUTPUT)/testing_helpers.oCGROUP_HELPERS	:= $(OUTPUT)/cgroup_helpers.oUNPRIV_HELPERS  := $(OUTPUT)/unpriv_helpers.oTRACE_HELPERS	:= $(OUTPUT)/trace_helpers.oJSON_WRITER		:= $(OUTPUT)/json_writer.oCAP_HELPERS	:= $(OUTPUT)/cap_helpers.oNETWORK_HELPERS := $(OUTPUT)/network_helpers.o $(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS)$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS)$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS)$(OUTPUT)/test_tag: $(TESTING_HELPERS)$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS)$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS)$(OUTPUT)/test_maps: $(TESTING_HELPERS)$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS) $(UNPRIV_HELPERS)$(OUTPUT)/xsk.o: $(BPFOBJ) BPFTOOL ?= $(DEFAULT_BPFTOOL)$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile)    \		    $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool	$(Q)$(MAKE) $(submake_extras)  -C $(BPFTOOLDIR)			       \		    ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" 	       \		    EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS) $(EXTRA_CFLAGS)'	       \		    EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)'			       \		    OUTPUT=$(HOST_BUILD_DIR)/bpftool/			       \		    LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/		       \		    LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/			       \		    SKIP_LLVM=$(SKIP_LLVM)				       \		    SKIP_LIBBFD=$(SKIP_LIBBFD)				       \		    SKIP_CRYPTO=$(SKIP_CRYPTO)				       \		    prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin ifneq ($(CROSS_COMPILE),)$(CROSS_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile)	\		    $(BPFOBJ) | $(BUILD_DIR)/bpftool	$(Q)$(MAKE) $(submake_extras)  -C $(BPFTOOLDIR)				\		    ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE)			\		    EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS) $(EXTRA_CFLAGS)'	       \		    EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)'			       \		    OUTPUT=$(BUILD_DIR)/bpftool/				\		    LIBBPF_OUTPUT=$(BUILD_DIR)/libbpf/				\		    LIBBPF_DESTDIR=$(SCRATCH_DIR)/				\		    SKIP_LLVM=$(SKIP_LLVM)					\		    SKIP_LIBBFD=$(SKIP_LIBBFD)					\		    SKIP_CRYPTO=$(SKIP_CRYPTO)					\		    prefix= DESTDIR=$(SCRATCH_DIR)/ install-binendif ifneq ($(SKIP_DOCS),1)all: docsendif docs:	$(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras)	\	            -f Makefile.docs					\	            prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ docs-clean:	$(Q)$(MAKE) $(submake_extras)					\	            -f Makefile.docs					\	            prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@ $(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile)		       \	   $(APIDIR)/linux/bpf.h					       \	   | $(BUILD_DIR)/libbpf	$(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \		    EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS) $(EXTRA_CFLAGS)' \		    EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)'	       \		    DESTDIR=$(SCRATCH_DIR) prefix= all install_headers ifneq ($(BPFOBJ),$(HOST_BPFOBJ))$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile)		       \		$(APIDIR)/linux/bpf.h					       \		| $(HOST_BUILD_DIR)/libbpf	$(Q)$(MAKE) $(submake_extras) -C $(BPFDIR)                             \		    ARCH= CROSS_COMPILE=				       \		    EXTRA_CFLAGS='-g $(OPT_FLAGS) $(EXTRA_CFLAGS)'	       \		    EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)'			       \		    OUTPUT=$(HOST_BUILD_DIR)/libbpf/			       \		    CC="$(HOSTCC)" LD="$(HOSTLD)"			       \		    DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headersendif # vmlinux.h is first dumped to a temporary file and then compared to# the previous version. This helps to avoid unnecessary re-builds of# $(TRUNNER_BPF_OBJS)$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR)ifeq ($(VMLINUX_H),)	$(call msg,GEN,,$@)	$(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $(INCLUDE_DIR)/.vmlinux.h.tmp	$(Q)cmp -s $(INCLUDE_DIR)/.vmlinux.h.tmp $@ || mv $(INCLUDE_DIR)/.vmlinux.h.tmp $@else	$(call msg,CP,,$@)	$(Q)cp "$(VMLINUX_H)" $@endif $(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids	\		       $(TOOLSDIR)/bpf/resolve_btfids/main.c	\		       $(TOOLSDIR)/lib/rbtree.c			\		       $(TOOLSDIR)/lib/zalloc.c			\		       $(TOOLSDIR)/lib/string.c			\		       $(TOOLSDIR)/lib/ctype.c			\		       $(TOOLSDIR)/lib/str_error_r.c	$(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids	\		CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \		LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \		EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)' \		HOSTPKG_CONFIG='$(PKG_CONFIG)' \		OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ) # Get Clang's default includes on this system, as opposed to those seen by# '--target=bpf'. This fixes "missing" files on some architectures/distros,# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.## Use '-idirafter': Don't interfere with include mechanics except where the# build would have failed anyways.define get_sys_includes$(shell $(1) $(2) -v -E - </dev/null 2>&1 \	| sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \$(shell $(1) $(2) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') \$(shell $(1) $(2) -dM -E - </dev/null | grep '__loongarch_grlen ' | awk '{printf("-D__BITS_PER_LONG=%d", $$3)}') \$(shell $(1) $(2) -dM -E - </dev/null | grep -E 'MIPS(EL|EB)|_MIPS_SZ(PTR|LONG) |_MIPS_SIM |_ABI(O32|N32|64) ' | awk '{printf("-D%s=%s ", $$2, $$3)}')endef # Determine target endianness.IS_LITTLE_ENDIAN := $(shell $(CC) -dM -E - </dev/null | \			grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')MENDIAN:=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)BPF_TARGET_ENDIAN:=$(if $(IS_LITTLE_ENDIAN),--target=bpfel,--target=bpfeb) ifneq ($(CROSS_COMPILE),)CLANG_TARGET_ARCH = --target=$(notdir $(CROSS_COMPILE:%-=%))endif CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG),$(CLANG_TARGET_ARCH))BPF_CFLAGS = -g -Wall -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN)	\	     -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR)			\	     -I$(TOOLSINCDIR) -I$(CURDIR)/libarena/include		\	     -I$(abspath $(OUTPUT)/../usr/include)			\	     -std=gnu11		 					\	     -fno-strict-aliasing 					\	     -Wno-microsoft-anon-tag					\	     -fms-extensions						\	     -Wno-compare-distinct-pointer-types			\	     -Wno-initializer-overrides					\	     ## TODO: enable me -Wsign-compare CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) $(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline $(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h$(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup_getset_retval_hooks.h # Build BPF object using Clang# $1 - input .c file# $2 - output .o file# $3 - CFLAGS# $4 - binary namedefine CLANG_BPF_BUILD_RULE	$(call msg,CLNG-BPF,$4,$2)	$(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v3 -o $2 $(if $(PERMISSIVE),|| \		($(RM) $2; printf '  %-12s %s\n' 'SKIP-BPF' '$(notdir $2)' 1>&2))endef# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32define CLANG_NOALU32_BPF_BUILD_RULE	$(call msg,CLNG-BPF,$4,$2)	$(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v2 -o $2 $(if $(PERMISSIVE),|| \		($(RM) $2; printf '  %-12s %s\n' 'SKIP-BPF' '$(notdir $2)' 1>&2))endef

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