Linux/samples/bpf/Makefile

Version: ~ [ linux-6.12-rc7 ] ~ [ linux-6.11.7 ] ~ [ linux-6.10.14 ] ~ [ linux-6.9.12 ] ~ [ linux-6.8.12 ] ~ [ linux-6.7.12 ] ~ [ linux-6.6.60 ] ~ [ linux-6.5.13 ] ~ [ linux-6.4.16 ] ~ [ linux-6.3.13 ] ~ [ linux-6.2.16 ] ~ [ linux-6.1.116 ] ~ [ linux-6.0.19 ] ~ [ linux-5.19.17 ] ~ [ linux-5.18.19 ] ~ [ linux-5.17.15 ] ~ [ linux-5.16.20 ] ~ [ linux-5.15.171 ] ~ [ linux-5.14.21 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.229 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.285 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.323 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.336 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.337 ] ~ [ linux-4.4.302 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.12 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

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1 # SPDX-License-Identifier: GPL-2.0 !! 1 # kbuild trick to avoid linker error. Can be omitted if a module is built. 2 !! 2 obj- := dummy.o 3 BPF_SAMPLES_PATH ?= $(abspath $(src)) << 4 TOOLS_PATH := $(BPF_SAMPLES_PATH)/../../tools << 5 << 6 pound := \# << 7 3 8 # List of programs to build 4 # List of programs to build 9 tprogs-y := test_lru_dist !! 5 hostprogs-y := test_verifier test_maps 10 tprogs-y += sock_example !! 6 hostprogs-y += sock_example 11 tprogs-y += fds_example !! 7 hostprogs-y += fds_example 12 tprogs-y += sockex1 !! 8 hostprogs-y += sockex1 13 tprogs-y += sockex2 !! 9 hostprogs-y += sockex2 14 tprogs-y += sockex3 !! 10 hostprogs-y += sockex3 15 tprogs-y += tracex1 !! 11 hostprogs-y += tracex1 16 tprogs-y += tracex3 !! 12 hostprogs-y += tracex2 17 tprogs-y += tracex4 !! 13 hostprogs-y += tracex3 18 tprogs-y += tracex5 !! 14 hostprogs-y += tracex4 19 tprogs-y += tracex6 !! 15 hostprogs-y += tracex5 20 tprogs-y += tracex7 !! 16 hostprogs-y += tracex6 21 tprogs-y += test_probe_write_user !! 17 hostprogs-y += test_probe_write_user 22 tprogs-y += trace_output !! 18 hostprogs-y += trace_output 23 tprogs-y += lathist !! 19 hostprogs-y += lathist 24 tprogs-y += offwaketime !! 20 hostprogs-y += offwaketime 25 tprogs-y += spintest !! 21 hostprogs-y += spintest 26 tprogs-y += map_perf_test !! 22 hostprogs-y += map_perf_test 27 tprogs-y += test_overhead !! 23 hostprogs-y += test_overhead 28 tprogs-y += test_cgrp2_array_pin !! 24 hostprogs-y += test_cgrp2_array_pin 29 tprogs-y += test_cgrp2_attach !! 25 hostprogs-y += xdp1 30 tprogs-y += test_cgrp2_sock !! 26 hostprogs-y += xdp2 31 tprogs-y += test_cgrp2_sock2 !! 27 hostprogs-y += test_current_task_under_cgroup 32 tprogs-y += xdp_router_ipv4 !! 28 hostprogs-y += trace_event 33 tprogs-y += test_current_task_under_cgroup !! 29 hostprogs-y += sampleip 34 tprogs-y += trace_event !! 30 hostprogs-y += tc_l2_redirect 35 tprogs-y += sampleip !! 31 36 tprogs-y += tc_l2_redirect !! 32 test_verifier-objs := test_verifier.o libbpf.o 37 tprogs-y += lwt_len_hist !! 33 test_maps-objs := test_maps.o libbpf.o 38 tprogs-y += xdp_tx_iptunnel !! 34 sock_example-objs := sock_example.o libbpf.o 39 tprogs-y += test_map_in_map !! 35 fds_example-objs := bpf_load.o libbpf.o fds_example.o 40 tprogs-y += per_socket_stats_example !! 36 sockex1-objs := bpf_load.o libbpf.o sockex1_user.o 41 tprogs-y += syscall_tp !! 37 sockex2-objs := bpf_load.o libbpf.o sockex2_user.o 42 tprogs-y += cpustat !! 38 sockex3-objs := bpf_load.o libbpf.o sockex3_user.o 43 tprogs-y += xdp_adjust_tail !! 39 tracex1-objs := bpf_load.o libbpf.o tracex1_user.o 44 tprogs-y += xdp_fwd !! 40 tracex2-objs := bpf_load.o libbpf.o tracex2_user.o 45 tprogs-y += task_fd_query !! 41 tracex3-objs := bpf_load.o libbpf.o tracex3_user.o 46 tprogs-y += ibumad !! 42 tracex4-objs := bpf_load.o libbpf.o tracex4_user.o 47 tprogs-y += hbm !! 43 tracex5-objs := bpf_load.o libbpf.o tracex5_user.o 48 !! 44 tracex6-objs := bpf_load.o libbpf.o tracex6_user.o 49 # Libbpf dependencies !! 45 test_probe_write_user-objs := bpf_load.o libbpf.o test_probe_write_user_user.o 50 LIBBPF_SRC = $(TOOLS_PATH)/lib/bpf !! 46 trace_output-objs := bpf_load.o libbpf.o trace_output_user.o 51 LIBBPF_OUTPUT = $(abspath $(BPF_SAMPLES_PATH)) !! 47 lathist-objs := bpf_load.o libbpf.o lathist_user.o 52 LIBBPF_DESTDIR = $(LIBBPF_OUTPUT) !! 48 offwaketime-objs := bpf_load.o libbpf.o offwaketime_user.o 53 LIBBPF_INCLUDE = $(LIBBPF_DESTDIR)/include !! 49 spintest-objs := bpf_load.o libbpf.o spintest_user.o 54 LIBBPF = $(LIBBPF_OUTPUT)/libbpf.a !! 50 map_perf_test-objs := bpf_load.o libbpf.o map_perf_test_user.o 55 !! 51 test_overhead-objs := bpf_load.o libbpf.o test_overhead_user.o 56 CGROUP_HELPERS := ../../tools/testing/selftest !! 52 test_cgrp2_array_pin-objs := libbpf.o test_cgrp2_array_pin.o 57 TRACE_HELPERS := ../../tools/testing/selftests !! 53 xdp1-objs := bpf_load.o libbpf.o xdp1_user.o 58 XDP_SAMPLE := xdp_sample_user.o !! 54 # reuse xdp1 source intentionally 59 !! 55 xdp2-objs := bpf_load.o libbpf.o xdp1_user.o 60 fds_example-objs := fds_example.o !! 56 test_current_task_under_cgroup-objs := bpf_load.o libbpf.o \ 61 sockex1-objs := sockex1_user.o << 62 sockex2-objs := sockex2_user.o << 63 sockex3-objs := sockex3_user.o << 64 tracex1-objs := tracex1_user.o $(TRACE_HELPERS << 65 tracex3-objs := tracex3_user.o << 66 tracex4-objs := tracex4_user.o << 67 tracex5-objs := tracex5_user.o $(TRACE_HELPERS << 68 tracex6-objs := tracex6_user.o << 69 tracex7-objs := tracex7_user.o << 70 test_probe_write_user-objs := test_probe_write << 71 trace_output-objs := trace_output_user.o << 72 lathist-objs := lathist_user.o << 73 offwaketime-objs := offwaketime_user.o $(TRACE << 74 spintest-objs := spintest_user.o $(TRACE_HELPE << 75 map_perf_test-objs := map_perf_test_user.o << 76 test_overhead-objs := test_overhead_user.o << 77 test_cgrp2_array_pin-objs := test_cgrp2_array_ << 78 test_cgrp2_attach-objs := test_cgrp2_attach.o << 79 test_cgrp2_sock-objs := test_cgrp2_sock.o << 80 test_cgrp2_sock2-objs := test_cgrp2_sock2.o << 81 test_current_task_under_cgroup-objs := $(CGROU << 82 test_cu 57 test_current_task_under_cgroup_user.o 83 trace_event-objs := trace_event_user.o $(TRACE !! 58 trace_event-objs := bpf_load.o libbpf.o trace_event_user.o 84 sampleip-objs := sampleip_user.o $(TRACE_HELPE !! 59 sampleip-objs := bpf_load.o libbpf.o sampleip_user.o 85 tc_l2_redirect-objs := tc_l2_redirect_user.o !! 60 tc_l2_redirect-objs := bpf_load.o libbpf.o tc_l2_redirect_user.o 86 lwt_len_hist-objs := lwt_len_hist_user.o << 87 xdp_tx_iptunnel-objs := xdp_tx_iptunnel_user.o << 88 test_map_in_map-objs := test_map_in_map_user.o << 89 per_socket_stats_example-objs := cookie_uid_he << 90 syscall_tp-objs := syscall_tp_user.o << 91 cpustat-objs := cpustat_user.o << 92 xdp_adjust_tail-objs := xdp_adjust_tail_user.o << 93 xdp_fwd-objs := xdp_fwd_user.o << 94 task_fd_query-objs := task_fd_query_user.o $(T << 95 ibumad-objs := ibumad_user.o << 96 hbm-objs := hbm.o $(CGROUP_HELPERS) << 97 << 98 xdp_router_ipv4-objs := xdp_router_ipv4_user.o << 99 61 100 # Tell kbuild to always build the programs 62 # Tell kbuild to always build the programs 101 always-y := $(tprogs-y) !! 63 always := $(hostprogs-y) 102 always-y += sockex1_kern.o !! 64 always += sockex1_kern.o 103 always-y += sockex2_kern.o !! 65 always += sockex2_kern.o 104 always-y += sockex3_kern.o !! 66 always += sockex3_kern.o 105 always-y += tracex1.bpf.o !! 67 always += tracex1_kern.o 106 always-y += tracex3.bpf.o !! 68 always += tracex2_kern.o 107 always-y += tracex4.bpf.o !! 69 always += tracex3_kern.o 108 always-y += tracex5.bpf.o !! 70 always += tracex4_kern.o 109 always-y += tracex6.bpf.o !! 71 always += tracex5_kern.o 110 always-y += tracex7.bpf.o !! 72 always += tracex6_kern.o 111 always-y += sock_flags.bpf.o !! 73 always += test_probe_write_user_kern.o 112 always-y += test_probe_write_user.bpf.o !! 74 always += trace_output_kern.o 113 always-y += trace_output.bpf.o !! 75 always += tcbpf1_kern.o 114 always-y += tcbpf1_kern.o !! 76 always += tcbpf2_kern.o 115 always-y += tc_l2_redirect_kern.o !! 77 always += tc_l2_redirect_kern.o 116 always-y += lathist_kern.o !! 78 always += lathist_kern.o 117 always-y += offwaketime.bpf.o !! 79 always += offwaketime_kern.o 118 always-y += spintest.bpf.o !! 80 always += spintest_kern.o 119 always-y += map_perf_test.bpf.o !! 81 always += map_perf_test_kern.o 120 always-y += test_overhead_tp.bpf.o !! 82 always += test_overhead_tp_kern.o 121 always-y += test_overhead_raw_tp.bpf.o !! 83 always += test_overhead_kprobe_kern.o 122 always-y += test_overhead_kprobe.bpf.o !! 84 always += parse_varlen.o parse_simple.o parse_ldabs.o 123 always-y += parse_varlen.o parse_simple.o pars !! 85 always += test_cgrp2_tc_kern.o 124 always-y += test_cgrp2_tc.bpf.o !! 86 always += xdp1_kern.o 125 always-y += test_current_task_under_cgroup.bpf !! 87 always += xdp2_kern.o 126 always-y += trace_event_kern.o !! 88 always += test_current_task_under_cgroup_kern.o 127 always-y += sampleip_kern.o !! 89 always += trace_event_kern.o 128 always-y += lwt_len_hist.bpf.o !! 90 always += sampleip_kern.o 129 always-y += xdp_tx_iptunnel_kern.o !! 91 130 always-y += test_map_in_map.bpf.o !! 92 HOSTCFLAGS += -I$(objtree)/usr/include 131 always-y += tcp_synrto_kern.o !! 93 132 always-y += tcp_rwnd_kern.o !! 94 HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variable 133 always-y += tcp_bufs_kern.o !! 95 HOSTLOADLIBES_fds_example += -lelf 134 always-y += tcp_cong_kern.o !! 96 HOSTLOADLIBES_sockex1 += -lelf 135 always-y += tcp_iw_kern.o !! 97 HOSTLOADLIBES_sockex2 += -lelf 136 always-y += tcp_clamp_kern.o !! 98 HOSTLOADLIBES_sockex3 += -lelf 137 always-y += tcp_basertt_kern.o !! 99 HOSTLOADLIBES_tracex1 += -lelf 138 always-y += tcp_tos_reflect_kern.o !! 100 HOSTLOADLIBES_tracex2 += -lelf 139 always-y += tcp_dumpstats_kern.o !! 101 HOSTLOADLIBES_tracex3 += -lelf 140 always-y += xdp2skb_meta_kern.o !! 102 HOSTLOADLIBES_tracex4 += -lelf -lrt 141 always-y += syscall_tp_kern.o !! 103 HOSTLOADLIBES_tracex5 += -lelf 142 always-y += cpustat_kern.o !! 104 HOSTLOADLIBES_tracex6 += -lelf 143 always-y += xdp_adjust_tail_kern.o !! 105 HOSTLOADLIBES_test_probe_write_user += -lelf 144 always-y += xdp_fwd_kern.o !! 106 HOSTLOADLIBES_trace_output += -lelf -lrt 145 always-y += task_fd_query_kern.o !! 107 HOSTLOADLIBES_lathist += -lelf 146 always-y += ibumad_kern.o !! 108 HOSTLOADLIBES_offwaketime += -lelf 147 always-y += hbm_out_kern.o !! 109 HOSTLOADLIBES_spintest += -lelf 148 always-y += hbm_edt_kern.o !! 110 HOSTLOADLIBES_map_perf_test += -lelf -lrt 149 !! 111 HOSTLOADLIBES_test_overhead += -lelf -lrt 150 TPROGS_CFLAGS = $(TPROGS_USER_CFLAGS) !! 112 HOSTLOADLIBES_xdp1 += -lelf 151 TPROGS_LDFLAGS = $(TPROGS_USER_LDFLAGS) !! 113 HOSTLOADLIBES_xdp2 += -lelf 152 !! 114 HOSTLOADLIBES_test_current_task_under_cgroup += -lelf 153 ifeq ($(ARCH), arm) !! 115 HOSTLOADLIBES_trace_event += -lelf 154 # Strip all except -D__LINUX_ARM_ARCH__ option !! 116 HOSTLOADLIBES_sampleip += -lelf 155 # headers when arm instruction set identificat !! 117 HOSTLOADLIBES_tc_l2_redirect += -l elf 156 ARM_ARCH_SELECTOR := $(filter -D__LINUX_ARM_AR << 157 BPF_EXTRA_CFLAGS := $(ARM_ARCH_SELECTOR) << 158 TPROGS_CFLAGS += $(ARM_ARCH_SELECTOR) << 159 endif << 160 << 161 ifeq ($(ARCH), mips) << 162 TPROGS_CFLAGS += -D__SANE_USERSPACE_TYPES__ << 163 ifdef CONFIG_MACH_LOONGSON64 << 164 BPF_EXTRA_CFLAGS += -I$(srctree)/arch/mips/inc << 165 BPF_EXTRA_CFLAGS += -I$(srctree)/arch/mips/inc << 166 endif << 167 endif << 168 << 169 ifeq ($(ARCH), x86) << 170 BPF_EXTRA_CFLAGS += -fcf-protection << 171 endif << 172 << 173 TPROGS_CFLAGS += -Wall -O2 << 174 TPROGS_CFLAGS += -Wmissing-prototypes << 175 TPROGS_CFLAGS += -Wstrict-prototypes << 176 TPROGS_CFLAGS += $(call try-run,\ << 177 printf "int main() { return 0; }" |\ << 178 $(CC) -Werror -fsanitize=bounds -x c - << 179 << 180 TPROGS_CFLAGS += -I$(objtree)/usr/include << 181 TPROGS_CFLAGS += -I$(srctree)/tools/testing/se << 182 TPROGS_CFLAGS += -I$(LIBBPF_INCLUDE) << 183 TPROGS_CFLAGS += -I$(srctree)/tools/include << 184 TPROGS_CFLAGS += -I$(srctree)/tools/perf << 185 TPROGS_CFLAGS += -I$(srctree)/tools/lib << 186 TPROGS_CFLAGS += -DHAVE_ATTR_TEST=0 << 187 << 188 ifdef SYSROOT << 189 TPROGS_CFLAGS += --sysroot=$(SYSROOT) << 190 TPROGS_LDFLAGS := -L$(SYSROOT)/usr/lib << 191 endif << 192 << 193 TPROGS_LDLIBS += $(LIBBPF) - << 194 TPROGLDLIBS_xdp_router_ipv4 += -lm -pthrea << 195 TPROGLDLIBS_tracex4 += -lrt << 196 TPROGLDLIBS_trace_output += -lrt << 197 TPROGLDLIBS_map_perf_test += -lrt << 198 TPROGLDLIBS_test_overhead += -lrt << 199 118 200 # Allows pointing LLC/CLANG to a LLVM backend 119 # Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline: 201 # make M=samples/bpf LLC=~/git/llvm-project/ll !! 120 # make samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang 202 LLC ?= llc 121 LLC ?= llc 203 CLANG ?= clang 122 CLANG ?= clang 204 OPT ?= opt << 205 LLVM_DIS ?= llvm-dis << 206 LLVM_OBJCOPY ?= llvm-objcopy << 207 LLVM_READELF ?= llvm-readelf << 208 BTF_PAHOLE ?= pahole << 209 << 210 # Detect that we're cross compiling and use th << 211 ifdef CROSS_COMPILE << 212 CLANG_ARCH_ARGS = --target=$(notdir $(CROSS_CO << 213 endif << 214 << 215 # Don't evaluate probes and warnings if we nee << 216 ifneq ($(src),) << 217 HDR_PROBE := $(shell printf "$(pound)include < << 218 $(CC) $(TPROGS_CFLAGS) $(TPROGS_LDFLAG << 219 -o /dev/null 2>/dev/null && echo okay) << 220 << 221 ifeq ($(HDR_PROBE),) << 222 $(warning WARNING: Detected possible issues wi << 223 $(warning WARNING: Please install kernel heade << 224 endif << 225 << 226 BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -ma << 227 BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --he << 228 BTF_OBJCOPY_PROBE := $(shell $(LLVM_OBJCOPY) - << 229 BTF_LLVM_PROBE := $(shell echo "int main() { r << 230 $(CLANG) --target=bp << 231 $(LLVM_READELF) -S . << 232 /bin/rm -f ./llvm_bt << 233 << 234 BPF_EXTRA_CFLAGS += -fno-stack-protector << 235 ifneq ($(BTF_LLVM_PROBE),) << 236 BPF_EXTRA_CFLAGS += -g << 237 else << 238 ifneq ($(and $(BTF_LLC_PROBE),$(BTF_PAHOLE_PRO << 239 BPF_EXTRA_CFLAGS += -g << 240 LLC_FLAGS += -mattr=dwarfris << 241 DWARF2BTF = y << 242 endif << 243 endif << 244 endif << 245 123 246 # Trick to allow make to be run from this dire 124 # Trick to allow make to be run from this directory 247 all: 125 all: 248 $(MAKE) -C ../../ M=$(CURDIR) BPF_SAMP !! 126 $(MAKE) -C ../../ $$PWD/ 249 127 250 clean: 128 clean: 251 $(MAKE) -C ../../ M=$(CURDIR) clean !! 129 $(MAKE) -C ../../ M=$$PWD clean 252 @find $(CURDIR) -type f -name '*~' -de !! 130 @rm -f *~ 253 @$(RM) -r $(CURDIR)/libbpf $(CURDIR)/b << 254 << 255 $(LIBBPF): $(wildcard $(LIBBPF_SRC)/*.[ch] $(L << 256 # Fix up variables inherited from Kbuild that << 257 $(MAKE) -C $(LIBBPF_SRC) RM='rm -rf' E << 258 LDFLAGS="$(TPROGS_LDFLAGS)" sr << 259 O= OUTPUT=$(LIBBPF_OUTPUT)/ DE << 260 $@ install_headers << 261 << 262 BPFTOOLDIR := $(TOOLS_PATH)/bpf/bpftool << 263 BPFTOOL_OUTPUT := $(abspath $(BPF_SAMPLES_PATH << 264 DEFAULT_BPFTOOL := $(BPFTOOL_OUTPUT)/bootstrap << 265 BPFTOOL ?= $(DEFAULT_BPFTOOL) << 266 $(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/* << 267 $(MAKE) -C $(BPFTOOLDIR) srctree=$(BPF << 268 OUTPUT=$(BPFTOOL_OUTPUT)/ boot << 269 << 270 $(LIBBPF_OUTPUT) $(BPFTOOL_OUTPUT): << 271 $(call msg,MKDIR,$@) << 272 $(Q)mkdir -p $@ << 273 << 274 $(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s F << 275 $(call filechk,offsets,__SYSCALL_NRS_H << 276 << 277 targets += syscall_nrs.s << 278 clean-files += syscall_nrs.h << 279 << 280 FORCE: << 281 << 282 131 283 # Verify LLVM compiler tools are available and 132 # Verify LLVM compiler tools are available and bpf target is supported by llc 284 .PHONY: verify_cmds verify_target_bpf $(CLANG) 133 .PHONY: verify_cmds verify_target_bpf $(CLANG) $(LLC) 285 134 286 verify_cmds: $(CLANG) $(LLC) 135 verify_cmds: $(CLANG) $(LLC) 287 @for TOOL in $^ ; do \ 136 @for TOOL in $^ ; do \ 288 if ! (which -- "$${TOOL}" > /d 137 if ! (which -- "$${TOOL}" > /dev/null 2>&1); then \ 289 echo "*** ERROR: Canno 138 echo "*** ERROR: Cannot find LLVM tool $${TOOL}" ;\ 290 exit 1; \ 139 exit 1; \ 291 else true; fi; \ 140 else true; fi; \ 292 done 141 done 293 142 294 verify_target_bpf: verify_cmds 143 verify_target_bpf: verify_cmds 295 @if ! (${LLC} -march=bpf -mattr=help > 144 @if ! (${LLC} -march=bpf -mattr=help > /dev/null 2>&1); then \ 296 echo "*** ERROR: LLVM (${LLC}) 145 echo "*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\ 297 echo " NOTICE: LLVM version 146 echo " NOTICE: LLVM version >= 3.7.1 required" ;\ 298 exit 2; \ 147 exit 2; \ 299 else true; fi 148 else true; fi 300 149 301 $(BPF_SAMPLES_PATH)/*.c: verify_target_bpf $(L !! 150 $(src)/*.c: verify_target_bpf 302 $(src)/*.c: verify_target_bpf $(LIBBPF) << 303 << 304 libbpf_hdrs: $(LIBBPF) << 305 $(obj)/$(TRACE_HELPERS) $(obj)/$(CGROUP_HELPER << 306 << 307 .PHONY: libbpf_hdrs << 308 << 309 $(obj)/xdp_router_ipv4_user.o: $(obj)/xdp_rout << 310 << 311 $(obj)/tracex5.bpf.o: $(obj)/syscall_nrs.h << 312 $(obj)/hbm_out_kern.o: $(src)/hbm.h $(src)/hbm << 313 $(obj)/hbm.o: $(src)/hbm.h << 314 $(obj)/hbm_edt_kern.o: $(src)/hbm.h $(src)/hbm << 315 << 316 # Override includes for xdp_sample_user.o beca << 317 # TPROGS_CFLAGS causes conflicts << 318 XDP_SAMPLE_CFLAGS += -Wall -O2 \ << 319 -I$(src)/../../tools/incl << 320 -I$(src)/../../tools/incl << 321 -I$(LIBBPF_INCLUDE) \ << 322 -I$(src)/../../tools/test << 323 << 324 $(obj)/$(XDP_SAMPLE): TPROGS_CFLAGS = $(XDP_SA << 325 $(obj)/$(XDP_SAMPLE): $(src)/xdp_sample_user.h << 326 # Override includes for trace_helpers.o becaus << 327 # in our include path. << 328 $(obj)/$(TRACE_HELPERS): TPROGS_CFLAGS := $(TP << 329 << 330 -include $(BPF_SAMPLES_PATH)/Makefile.target << 331 << 332 VMLINUX_BTF_PATHS ?= $(abspath $(if $(O),$(O)/ << 333 $(abspath $(if $(KBUILD_O << 334 $(abspath ./vmlinux) << 335 VMLINUX_BTF ?= $(abspath $(firstword $(wildcar << 336 << 337 $(obj)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) << 338 ifeq ($(VMLINUX_H),) << 339 ifeq ($(VMLINUX_BTF),) << 340 $(error Cannot find a vmlinux for VMLI << 341 build the kernel or set VMLINU << 342 endif << 343 $(Q)$(BPFTOOL) btf dump file $(VMLINUX << 344 else << 345 $(Q)cp "$(VMLINUX_H)" $@ << 346 endif << 347 << 348 clean-files += vmlinux.h << 349 << 350 # Get Clang's default includes on this system, << 351 # '--target=bpf'. This fixes "missing" files o << 352 # such as asm/byteorder.h, asm/socket.h, asm/s << 353 # << 354 # Use '-idirafter': Don't interfere with inclu << 355 # build would have failed anyways. << 356 define get_sys_includes << 357 $(shell $(1) -v -E - </dev/null 2>&1 \ << 358 | sed -n '/<...> search starts here:/, << 359 $(shell $(1) -dM -E - </dev/null | grep '#defi << 360 endef << 361 << 362 CLANG_SYS_INCLUDES = $(call get_sys_includes,$ << 363 << 364 $(obj)/xdp_router_ipv4.bpf.o: $(obj)/xdp_sampl << 365 << 366 $(obj)/%.bpf.o: $(src)/%.bpf.c $(obj)/vmlinux. << 367 @echo " CLANG-BPF " $@ << 368 $(Q)$(CLANG) -g -O2 --target=bpf -D__T << 369 -Wno-compare-distinct-pointer- << 370 -I$(srctree)/samples/bpf -I$(s << 371 -I$(LIBBPF_INCLUDE) $(CLANG_SY << 372 -c $(filter %.bpf.c,$^) -o $@ << 373 << 374 LINKED_SKELS := xdp_router_ipv4.skel.h << 375 clean-files += $(LINKED_SKELS) << 376 << 377 xdp_router_ipv4.skel.h-deps := xdp_router_ipv4 << 378 << 379 LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.bpf.c, << 380 << 381 BPF_SRCS_LINKED := $(notdir $(wildcard $(src)/ << 382 BPF_OBJS_LINKED := $(patsubst %.bpf.c,$(obj)/% << 383 BPF_SKELS_LINKED := $(addprefix $(obj)/,$(LINK << 384 << 385 $(BPF_SKELS_LINKED): $(BPF_OBJS_LINKED) $(BPFT << 386 @echo " BPF GEN-OBJ " $(@:.skel.h=) << 387 $(Q)$(BPFTOOL) gen object $(@:.skel.h= << 388 @echo " BPF GEN-SKEL" $(@:.skel.h=) << 389 $(Q)$(BPFTOOL) gen skeleton $(@:.skel. << 390 151 391 # asm/sysreg.h - inline assembly used by it is 152 # asm/sysreg.h - inline assembly used by it is incompatible with llvm. 392 # But, there is no easy way to fix it, so just 153 # But, there is no easy way to fix it, so just exclude it since it is 393 # useless for BPF samples. 154 # useless for BPF samples. 394 # below we use long chain of commands, clang | << 395 # to generate final object file. 'clang' compi << 396 # with native target, e.g., x64, arm64, etc. ' << 397 # processing (llvm12) and IR optimizations. 'l << 398 # 'opt' output to IR, and finally 'llc' genera << 399 $(obj)/%.o: $(src)/%.c 155 $(obj)/%.o: $(src)/%.c 400 @echo " CLANG-bpf " $@ !! 156 $(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) \ 401 $(Q)$(CLANG) $(NOSTDINC_FLAGS) $(LINUX !! 157 -D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \ 402 -I$(obj) -I$(srctree)/tools/te !! 158 -Wno-compare-distinct-pointer-types \ 403 -I$(LIBBPF_INCLUDE) \ !! 159 -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@ 404 -D__KERNEL__ -D__BPF_TRACING__ << 405 -D__TARGET_ARCH_$(SRCARCH) -Wn << 406 -Wno-gnu-variable-sized-type-n << 407 -Wno-address-of-packed-member << 408 -Wno-unknown-warning-option $( << 409 -fno-asynchronous-unwind-table << 410 -I$(srctree)/samples/bpf/ -inc << 411 -O2 -emit-llvm -Xclang -disabl << 412 $(OPT) -O2 -mtriple=bpf-pc-lin << 413 $(LLC) -march=bpf $(LLC_FLAGS) << 414 ifeq ($(DWARF2BTF),y) << 415 $(BTF_PAHOLE) -J $@ << 416 endif <<

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