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