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 $(PKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf)
36
37ifeq ($(srctree),)
38srctree := $(patsubst %/,%,$(dir $(CURDIR)))
39srctree := $(patsubst %/,%,$(dir $(srctree)))
40srctree := $(patsubst %/,%,$(dir $(srctree)))
41srctree := $(patsubst %/,%,$(dir $(srctree)))
42endif
43
44CFLAGS += -g $(OPT_FLAGS) -rdynamic -std=gnu11 \
45 -Wall -Werror -fno-omit-frame-pointer \
46 $(GENFLAGS) $(SAN_CFLAGS) $(LIBELF_CFLAGS) \
47 -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \
48 -I$(TOOLSINCDIR) -I$(TOOLSARCHINCDIR) -I$(APIDIR) -I$(OUTPUT)
49LDFLAGS += $(SAN_LDFLAGS)
50LDLIBS += $(LIBELF_LIBS) -lz -lrt -lpthread
51
52PCAP_CFLAGS := $(shell $(PKG_CONFIG) --cflags libpcap 2>/dev/null && echo "-DTRAFFIC_MONITOR=1")
53PCAP_LIBS := $(shell $(PKG_CONFIG) --libs libpcap 2>/dev/null)
54LDLIBS += $(PCAP_LIBS)
55CFLAGS += $(PCAP_CFLAGS)
56
57# Some utility functions use LLVM libraries
58jit_disasm_helpers.c-CFLAGS = $(LLVM_CFLAGS)
59
60ifneq ($(LLVM),)
61# Silence some warnings when compiled with clang
62CFLAGS += -Wno-unused-command-line-argument
63endif
64
65# Check whether bpf cpu=v4 is supported or not by clang
66ifneq ($(shell $(CLANG) --target=bpf -mcpu=help 2>&1 | grep 'v4'),)
67CLANG_CPUV4 := 1
68endif
69
70# Order correspond to 'make run_tests' order
71TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_progs \
72 test_sockmap \
73 test_tcpnotify_user test_sysctl \
74 test_progs-no_alu32
75TEST_INST_SUBDIRS := no_alu32
76
77# Also test bpf-gcc, if present
78ifneq ($(BPF_GCC),)
79TEST_GEN_PROGS += test_progs-bpf_gcc
80TEST_INST_SUBDIRS += bpf_gcc
81
82# The following tests contain C code that, although technically legal,
83# triggers GCC warnings that cannot be disabled: declaration of
84# anonymous struct types in function parameter lists.
85progs/btf_dump_test_case_bitfields.c-bpf_gcc-CFLAGS := -Wno-error
86progs/btf_dump_test_case_namespacing.c-bpf_gcc-CFLAGS := -Wno-error
87progs/btf_dump_test_case_packing.c-bpf_gcc-CFLAGS := -Wno-error
88progs/btf_dump_test_case_padding.c-bpf_gcc-CFLAGS := -Wno-error
89progs/btf_dump_test_case_syntax.c-bpf_gcc-CFLAGS := -Wno-error
90
91endif
92
93ifneq ($(CLANG_CPUV4),)
94TEST_GEN_PROGS += test_progs-cpuv4
95TEST_INST_SUBDIRS += cpuv4
96endif
97
98TEST_GEN_FILES = test_lwt_ip_encap.bpf.o test_tc_edt.bpf.o
99TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c)
100
101# Order correspond to 'make run_tests' order
102TEST_PROGS := test_kmod.sh \
103 test_xdp_redirect_multi.sh \
104 test_tunnel.sh \
105 test_lwt_seg6local.sh \
106 test_lirc_mode2.sh \
107 test_xdp_vlan_mode_generic.sh \
108 test_xdp_vlan_mode_native.sh \
109 test_lwt_ip_encap.sh \
110 test_tc_tunnel.sh \
111 test_tc_edt.sh \
112 test_xdping.sh \
113 test_bpftool_build.sh \
114 test_bpftool.sh \
115 test_bpftool_metadata.sh \
116 test_doc_build.sh \
117 test_xsk.sh \
118 test_xdp_features.sh
119
120TEST_PROGS_EXTENDED := with_addr.sh \
121 with_tunnels.sh ima_setup.sh verify_sig_setup.sh \
122 test_xdp_vlan.sh test_bpftool.py
123
124TEST_KMODS := bpf_testmod.ko bpf_test_no_cfi.ko bpf_test_modorder_x.ko \
125 bpf_test_modorder_y.ko
126TEST_KMOD_TARGETS = $(addprefix $(OUTPUT)/,$(TEST_KMODS))
127
128# Compile but not part of 'make run_tests'
129TEST_GEN_PROGS_EXTENDED = \
130 bench \
131 flow_dissector_load \
132 runqslower \
133 test_cpp \
134 test_lirc_mode2_user \
135 veristat \
136 xdp_features \
137 xdp_hw_metadata \
138 xdp_redirect_multi \
139 xdp_synproxy \
140 xdping \
141 xskxceiver
142
143TEST_GEN_FILES += liburandom_read.so urandom_read sign-file uprobe_multi
144
145ifneq ($(V),1)
146submake_extras := feature_display=0
147endif
148
149# override lib.mk's default rules
150OVERRIDE_TARGETS := 1
151override define CLEAN
152 $(call msg,CLEAN)
153 $(Q)$(RM) -r $(TEST_GEN_PROGS)
154 $(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED)
155 $(Q)$(RM) -r $(TEST_GEN_FILES)
156 $(Q)$(RM) -r $(TEST_KMODS)
157 $(Q)$(RM) -r $(EXTRA_CLEAN)
158 $(Q)$(MAKE) -C test_kmods clean
159 $(Q)$(MAKE) docs-clean
160endef
161
162include ../lib.mk
163
164NON_CHECK_FEAT_TARGETS := clean docs-clean
165CHECK_FEAT := $(filter-out $(NON_CHECK_FEAT_TARGETS),$(or $(MAKECMDGOALS), "none"))
166ifneq ($(CHECK_FEAT),)
167FEATURE_USER := .selftests
168FEATURE_TESTS := llvm
169FEATURE_DISPLAY := $(FEATURE_TESTS)
170
171# Makefile.feature expects OUTPUT to end with a slash
172ifeq ($(shell expr $(MAKE_VERSION) \>= 4.4), 1)
173$(let OUTPUT,$(OUTPUT)/,\
174 $(eval include ../../../build/Makefile.feature))
175else
176override OUTPUT := $(OUTPUT)/
177$(eval include ../../../build/Makefile.feature)
178override OUTPUT := $(patsubst %/,%,$(OUTPUT))
179endif
180endif
181
182ifeq ($(feature-llvm),1)
183 LLVM_CFLAGS += -DHAVE_LLVM_SUPPORT
184 LLVM_CONFIG_LIB_COMPONENTS := mcdisassembler all-targets
185 # both llvm-config and lib.mk add -D_GNU_SOURCE, which ends up as conflict
186 LLVM_CFLAGS += $(filter-out -D_GNU_SOURCE,$(shell $(LLVM_CONFIG) --cflags))
187 LLVM_LDLIBS += $(shell $(LLVM_CONFIG) --link-static --libs $(LLVM_CONFIG_LIB_COMPONENTS))
188 LLVM_LDLIBS += $(shell $(LLVM_CONFIG) --link-static --system-libs $(LLVM_CONFIG_LIB_COMPONENTS))
189 LLVM_LDLIBS += -lstdc++
190 LLVM_LDFLAGS += $(shell $(LLVM_CONFIG) --ldflags)
191endif
192
193SCRATCH_DIR := $(OUTPUT)/tools
194BUILD_DIR := $(SCRATCH_DIR)/build
195INCLUDE_DIR := $(SCRATCH_DIR)/include
196BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
197ifneq ($(CROSS_COMPILE),)
198HOST_BUILD_DIR := $(BUILD_DIR)/host
199HOST_SCRATCH_DIR := $(OUTPUT)/host-tools
200HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include
201else
202HOST_BUILD_DIR := $(BUILD_DIR)
203HOST_SCRATCH_DIR := $(SCRATCH_DIR)
204HOST_INCLUDE_DIR := $(INCLUDE_DIR)
205endif
206HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a
207RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids
208RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/
209
210VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \
211 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \
212 ../../../../vmlinux \
213 /sys/kernel/btf/vmlinux \
214 /boot/vmlinux-$(shell uname -r)
215VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
216ifeq ($(VMLINUX_BTF),)
217$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)")
218endif
219
220# Define simple and short `make test_progs`, `make test_sysctl`, etc targets
221# to build individual tests.
222# NOTE: Semicolon at the end is critical to override lib.mk's default static
223# rule for binaries.
224$(notdir $(TEST_GEN_PROGS) $(TEST_KMODS) \
225 $(TEST_GEN_PROGS_EXTENDED)): %: $(OUTPUT)/% ;
226
227# sort removes libbpf duplicates when not cross-building
228MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \
229 $(BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/bpftool \
230 $(HOST_BUILD_DIR)/resolve_btfids \
231 $(RUNQSLOWER_OUTPUT) $(INCLUDE_DIR))
232$(MAKE_DIRS):
233 $(call msg,MKDIR,,$@)
234 $(Q)mkdir -p $@
235
236$(OUTPUT)/%.o: %.c
237 $(call msg,CC,,$@)
238 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
239
240$(OUTPUT)/%:%.c
241 $(call msg,BINARY,,$@)
242 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@
243
244# LLVM's ld.lld doesn't support all the architectures, so use it only on x86
245ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 riscv))
246LLD := lld
247else
248LLD := $(shell command -v $(LD))
249endif
250
251# Filter out -static for liburandom_read.so and its dependent targets so that static builds
252# do not fail. Static builds leave urandom_read relying on system-wide shared libraries.
253$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c liburandom_read.map
254 $(call msg,LIB,,$@)
255 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \
256 $(filter-out -static,$(CFLAGS) $(LDFLAGS)) \
257 $(filter %.c,$^) $(filter-out -static,$(LDLIBS)) \
258 -Wno-unused-command-line-argument \
259 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \
260 -Wl,--version-script=liburandom_read.map \
261 -fPIC -shared -o $@
262
263$(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so
264 $(call msg,BINARY,,$@)
265 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \
266 $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \
267 -Wno-unused-command-line-argument \
268 -lurandom_read $(filter-out -static,$(LDLIBS)) -L$(OUTPUT) \
269 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \
270 -Wl,-rpath=. -o $@
271
272$(OUTPUT)/sign-file: ../../../../scripts/sign-file.c
273 $(call msg,SIGN-FILE,,$@)
274 $(Q)$(CC) $(shell $(PKG_CONFIG) --cflags libcrypto 2> /dev/null) \
275 $< -o $@ \
276 $(shell $(PKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto)
277
278# This should really be a grouped target, but make versions before 4.3 don't
279# support that for regular rules. However, pattern matching rules are implicitly
280# treated as grouped even with older versions of make, so as a workaround, the
281# subst() turns the rule into a pattern matching rule
282$(addprefix test_kmods/,$(subst .ko,%ko,$(TEST_KMODS))): $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard test_kmods/Makefile test_kmods/*.[ch])
283 $(Q)$(RM) test_kmods/*.ko test_kmods/*.mod.o # force re-compilation
284 $(Q)$(MAKE) $(submake_extras) -C test_kmods \
285 RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) \
286 EXTRA_CFLAGS='' EXTRA_LDFLAGS=''
287
288$(TEST_KMOD_TARGETS): $(addprefix test_kmods/,$(TEST_KMODS))
289 $(call msg,MOD,,$@)
290 $(Q)cp test_kmods/$(@F) $@
291
292
293DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool
294ifneq ($(CROSS_COMPILE),)
295CROSS_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool
296TRUNNER_BPFTOOL := $(CROSS_BPFTOOL)
297USE_BOOTSTRAP := ""
298else
299TRUNNER_BPFTOOL := $(DEFAULT_BPFTOOL)
300USE_BOOTSTRAP := "bootstrap/"
301endif
302
303$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT)
304 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \
305 OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF) \
306 BPFTOOL_OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
307 BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf/ \
308 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) \
309 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS) $(EXTRA_CFLAGS)' \
310 EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)' && \
311 cp $(RUNQSLOWER_OUTPUT)runqslower $@
312
313TEST_GEN_PROGS_EXTENDED += $(TRUNNER_BPFTOOL)
314
315$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ)
316
317TESTING_HELPERS := $(OUTPUT)/testing_helpers.o
318CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o
319UNPRIV_HELPERS := $(OUTPUT)/unpriv_helpers.o
320TRACE_HELPERS := $(OUTPUT)/trace_helpers.o
321JSON_WRITER := $(OUTPUT)/json_writer.o
322CAP_HELPERS := $(OUTPUT)/cap_helpers.o
323NETWORK_HELPERS := $(OUTPUT)/network_helpers.o
324
325$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS)
326$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS)
327$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS)
328$(OUTPUT)/test_sysctl: $(CGROUP_HELPERS) $(TESTING_HELPERS)
329$(OUTPUT)/test_tag: $(TESTING_HELPERS)
330$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS)
331$(OUTPUT)/xdping: $(TESTING_HELPERS)
332$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS)
333$(OUTPUT)/test_maps: $(TESTING_HELPERS)
334$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS) $(UNPRIV_HELPERS)
335$(OUTPUT)/xsk.o: $(BPFOBJ)
336
337BPFTOOL ?= $(DEFAULT_BPFTOOL)
338$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
339 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool
340 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
341 ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" \
342 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(EXTRA_CFLAGS)' \
343 EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' \
344 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
345 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
346 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \
347 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin
348
349ifneq ($(CROSS_COMPILE),)
350$(CROSS_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
351 $(BPFOBJ) | $(BUILD_DIR)/bpftool
352 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
353 ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) \
354 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(EXTRA_CFLAGS)' \
355 EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' \
356 OUTPUT=$(BUILD_DIR)/bpftool/ \
357 LIBBPF_OUTPUT=$(BUILD_DIR)/libbpf/ \
358 LIBBPF_DESTDIR=$(SCRATCH_DIR)/ \
359 prefix= DESTDIR=$(SCRATCH_DIR)/ install-bin
360endif
361
362all: docs
363
364docs:
365 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \
366 -f Makefile.docs \
367 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
368
369docs-clean:
370 $(Q)$(MAKE) $(submake_extras) \
371 -f Makefile.docs \
372 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
373
374$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
375 $(APIDIR)/linux/bpf.h \
376 | $(BUILD_DIR)/libbpf
377 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
378 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS) $(EXTRA_CFLAGS)' \
379 EXTRA_LDFLAGS='$(SAN_LDFLAGS) $(EXTRA_LDFLAGS)' \
380 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
381
382ifneq ($(BPFOBJ),$(HOST_BPFOBJ))
383$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
384 $(APIDIR)/linux/bpf.h \
385 | $(HOST_BUILD_DIR)/libbpf
386 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \
387 ARCH= CROSS_COMPILE= \
388 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(EXTRA_CFLAGS)' \
389 EXTRA_LDFLAGS='$(EXTRA_LDFLAGS)' \
390 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
391 CC="$(HOSTCC)" LD="$(HOSTLD)" \
392 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers
393endif
394
395# vmlinux.h is first dumped to a temprorary file and then compared to
396# the previous version. This helps to avoid unnecessary re-builds of
397# $(TRUNNER_BPF_OBJS)
398$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR)
399ifeq ($(VMLINUX_H),)
400 $(call msg,GEN,,$@)
401 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $(INCLUDE_DIR)/.vmlinux.h.tmp
402 $(Q)cmp -s $(INCLUDE_DIR)/.vmlinux.h.tmp $@ || mv $(INCLUDE_DIR)/.vmlinux.h.tmp $@
403else
404 $(call msg,CP,,$@)
405 $(Q)cp "$(VMLINUX_H)" $@
406endif
407
408$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \
409 $(TOOLSDIR)/bpf/resolve_btfids/main.c \
410 $(TOOLSDIR)/lib/rbtree.c \
411 $(TOOLSDIR)/lib/zalloc.c \
412 $(TOOLSDIR)/lib/string.c \
413 $(TOOLSDIR)/lib/ctype.c \
414 $(TOOLSDIR)/lib/str_error_r.c
415 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \
416 CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \
417 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \
418 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ)
419
420# Get Clang's default includes on this system, as opposed to those seen by
421# '--target=bpf'. This fixes "missing" files on some architectures/distros,
422# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
423#
424# Use '-idirafter': Don't interfere with include mechanics except where the
425# build would have failed anyways.
426define get_sys_includes
427$(shell $(1) $(2) -v -E - </dev/null 2>&1 \
428 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \
429$(shell $(1) $(2) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') \
430$(shell $(1) $(2) -dM -E - </dev/null | grep '__loongarch_grlen ' | awk '{printf("-D__BITS_PER_LONG=%d", $$3)}') \
431$(shell $(1) $(2) -dM -E - </dev/null | grep -E 'MIPS(EL|EB)|_MIPS_SZ(PTR|LONG) |_MIPS_SIM |_ABI(O32|N32|64) ' | awk '{printf("-D%s=%s ", $$2, $$3)}')
432endef
433
434# Determine target endianness.
435IS_LITTLE_ENDIAN := $(shell $(CC) -dM -E - </dev/null | \
436 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
437MENDIAN:=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
438BPF_TARGET_ENDIAN:=$(if $(IS_LITTLE_ENDIAN),--target=bpfel,--target=bpfeb)
439
440ifneq ($(CROSS_COMPILE),)
441CLANG_TARGET_ARCH = --target=$(notdir $(CROSS_COMPILE:%-=%))
442endif
443
444CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG),$(CLANG_TARGET_ARCH))
445BPF_CFLAGS = -g -Wall -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \
446 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \
447 -I$(abspath $(OUTPUT)/../usr/include) \
448 -std=gnu11 \
449 -fno-strict-aliasing \
450 -Wno-compare-distinct-pointer-types
451# TODO: enable me -Wsign-compare
452
453CLANG_CFLAGS = $(CLANG_SYS_INCLUDES)
454
455$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline
456$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline
457
458$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
459$(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup_getset_retval_hooks.h
460
461# Build BPF object using Clang
462# $1 - input .c file
463# $2 - output .o file
464# $3 - CFLAGS
465# $4 - binary name
466define CLANG_BPF_BUILD_RULE
467 $(call msg,CLNG-BPF,$4,$2)
468 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v3 -o $2
469endef
470# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
471define CLANG_NOALU32_BPF_BUILD_RULE
472 $(call msg,CLNG-BPF,$4,$2)
473 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v2 -o $2
474endef
475# Similar to CLANG_BPF_BUILD_RULE, but with cpu-v4
476define CLANG_CPUV4_BPF_BUILD_RULE
477 $(call msg,CLNG-BPF,$4,$2)
478 $(Q)$(CLANG) $3 -O2 $(BPF_TARGET_ENDIAN) -c $1 -mcpu=v4 -o $2
479endef
480# Build BPF object using GCC
481define GCC_BPF_BUILD_RULE
482 $(call msg,GCC-BPF,$4,$2)
483 $(Q)$(BPF_GCC) $3 -DBPF_NO_PRESERVE_ACCESS_INDEX -Wno-attributes -O2 -c $1 -o $2
484endef
485
486SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c
487
488LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \
489 linked_vars.skel.h linked_maps.skel.h \
490 test_subskeleton.skel.h test_subskeleton_lib.skel.h \
491 test_usdt.skel.h
492
493LSKELS := fentry_test.c fexit_test.c fexit_sleep.c atomics.c \
494 trace_printk.c trace_vprintk.c map_ptr_kern.c \
495 core_kern.c core_kern_overflow.c test_ringbuf.c \
496 test_ringbuf_n.c test_ringbuf_map_key.c test_ringbuf_write.c
497
498# Generate both light skeleton and libbpf skeleton for these
499LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test.c \
500 kfunc_call_test_subprog.c
501SKEL_BLACKLIST += $$(LSKELS)
502
503test_static_linked.skel.h-deps := test_static_linked1.bpf.o test_static_linked2.bpf.o
504linked_funcs.skel.h-deps := linked_funcs1.bpf.o linked_funcs2.bpf.o
505linked_vars.skel.h-deps := linked_vars1.bpf.o linked_vars2.bpf.o
506linked_maps.skel.h-deps := linked_maps1.bpf.o linked_maps2.bpf.o
507# In the subskeleton case, we want the test_subskeleton_lib.subskel.h file
508# but that's created as a side-effect of the skel.h generation.
509test_subskeleton.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o test_subskeleton.bpf.o
510test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o
511test_usdt.skel.h-deps := test_usdt.bpf.o test_usdt_multispec.bpf.o
512xsk_xdp_progs.skel.h-deps := xsk_xdp_progs.bpf.o
513xdp_hw_metadata.skel.h-deps := xdp_hw_metadata.bpf.o
514xdp_features.skel.h-deps := xdp_features.bpf.o
515
516LINKED_BPF_OBJS := $(foreach skel,$(LINKED_SKELS),$($(skel)-deps))
517LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(LINKED_BPF_OBJS))
518
519HEADERS_FOR_BPF_OBJS := $(wildcard $(BPFDIR)/*.bpf.h) \
520 $(addprefix $(BPFDIR)/, bpf_core_read.h \
521 bpf_endian.h \
522 bpf_helpers.h \
523 bpf_tracing.h)
524
525# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on
526# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES.
527# Parameters:
528# $1 - test runner base binary name (e.g., test_progs)
529# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, bpf_gcc, etc)
530define DEFINE_TEST_RUNNER
531
532TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2
533TRUNNER_BINARY := $1$(if $2,-)$2
534TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \
535 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c)))
536TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \
537 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES)))
538TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES))
539TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h
540TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c))
541TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.bpf.o, $$(TRUNNER_BPF_SRCS))
542TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \
543 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\
544 $$(TRUNNER_BPF_SRCS)))
545TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA))
546TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS))
547TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS)
548
549# Evaluate rules now with extra TRUNNER_XXX variables above already defined
550$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2))
551
552endef
553
554# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and
555# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with:
556# $1 - test runner base binary name (e.g., test_progs)
557# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, bpf_gcc, etc)
558define DEFINE_TEST_RUNNER_RULES
559
560ifeq ($($(TRUNNER_OUTPUT)-dir),)
561$(TRUNNER_OUTPUT)-dir := y
562$(TRUNNER_OUTPUT):
563 $$(call msg,MKDIR,,$$@)
564 $(Q)mkdir -p $$@
565endif
566
567# ensure we set up BPF objects generation rule just once for a given
568# input/output directory combination
569ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),)
570$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y
571$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o: \
572 $(TRUNNER_BPF_PROGS_DIR)/%.c \
573 $(TRUNNER_BPF_PROGS_DIR)/*.h \
574 $$(INCLUDE_DIR)/vmlinux.h \
575 $(HEADERS_FOR_BPF_OBJS) \
576 | $(TRUNNER_OUTPUT) $$(BPFOBJ)
577 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \
578 $(TRUNNER_BPF_CFLAGS) \
579 $$($$<-CFLAGS) \
580 $$($$<-$2-CFLAGS),$(TRUNNER_BINARY))
581
582$(TRUNNER_BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
583 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
584 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$<
585 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o)
586 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o)
587 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o)
588 $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$@
589 $(Q)$$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$(@:.skel.h=.subskel.h)
590 $(Q)rm -f $$(<:.o=.linked1.o) $$(<:.o=.linked2.o) $$(<:.o=.linked3.o)
591
592$(TRUNNER_BPF_LSKELS): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
593 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
594 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$<
595 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o)
596 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o)
597 $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o)
598 $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@
599 $(Q)rm -f $$(<:.o=.llinked1.o) $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o)
600
601$(LINKED_BPF_OBJS): %: $(TRUNNER_OUTPUT)/%
602
603# .SECONDEXPANSION here allows to correctly expand %-deps variables as prerequisites
604.SECONDEXPANSION:
605$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_OUTPUT)/%: $$$$(%-deps) $(BPFTOOL) | $(TRUNNER_OUTPUT)
606 $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.bpf.o))
607 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps))
608 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o)
609 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o)
610 $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o)
611 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
612 $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@
613 $(Q)$$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h)
614 $(Q)rm -f $$(@:.skel.h=.linked1.o) $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o)
615
616# When the compiler generates a %.d file, only skel basenames (not
617# full paths) are specified as prerequisites for corresponding %.o
618# file. vpath directives below instruct make to search for skel files
619# in TRUNNER_OUTPUT, if they are not present in the working directory.
620vpath %.skel.h $(TRUNNER_OUTPUT)
621vpath %.lskel.h $(TRUNNER_OUTPUT)
622vpath %.subskel.h $(TRUNNER_OUTPUT)
623
624endif
625
626# ensure we set up tests.h header generation rule just once
627ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),)
628$(TRUNNER_TESTS_DIR)-tests-hdr := y
629$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c
630 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@)
631 $$(shell (echo '/* Generated header, do not edit */'; \
632 sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \
633 $(TRUNNER_TESTS_DIR)/*.c | sort ; \
634 ) > $$@)
635endif
636
637# compile individual test files
638# Note: we cd into output directory to ensure embedded BPF object is found
639$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \
640 $(TRUNNER_TESTS_DIR)/%.c \
641 | $(TRUNNER_OUTPUT)/%.test.d
642 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@)
643 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -MMD -MT $$@ -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F)
644
645$(TRUNNER_TEST_OBJS:.o=.d): $(TRUNNER_OUTPUT)/%.test.d: \
646 $(TRUNNER_TESTS_DIR)/%.c \
647 $(TRUNNER_EXTRA_HDRS) \
648 $(TRUNNER_BPF_SKELS) \
649 $(TRUNNER_BPF_LSKELS) \
650 $(TRUNNER_BPF_SKELS_LINKED) \
651 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
652
653ifeq ($(filter clean docs-clean,$(MAKECMDGOALS)),)
654include $(wildcard $(TRUNNER_TEST_OBJS:.o=.d))
655endif
656
657# add per extra obj CFGLAGS definitions
658$(foreach N,$(patsubst $(TRUNNER_OUTPUT)/%.o,%,$(TRUNNER_EXTRA_OBJS)), \
659 $(eval $(TRUNNER_OUTPUT)/$(N).o: CFLAGS += $($(N).c-CFLAGS)))
660
661$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \
662 %.c \
663 $(TRUNNER_EXTRA_HDRS) \
664 $(TRUNNER_TESTS_HDR) \
665 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
666 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@)
667 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@
668
669# non-flavored in-srctree builds receive special treatment, in particular, we
670# do not need to copy extra resources (see e.g. test_btf_dump_case())
671$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT)
672ifneq ($2:$(OUTPUT),:$(shell pwd))
673 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES))
674 $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/
675endif
676
677$(OUTPUT)/$(TRUNNER_BINARY): LDLIBS += $$(LLVM_LDLIBS)
678$(OUTPUT)/$(TRUNNER_BINARY): LDFLAGS += $$(LLVM_LDFLAGS)
679
680# some X.test.o files have runtime dependencies on Y.bpf.o files
681$(OUTPUT)/$(TRUNNER_BINARY): | $(TRUNNER_BPF_OBJS)
682
683$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \
684 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \
685 $(RESOLVE_BTFIDS) \
686 $(TRUNNER_BPFTOOL) \
687 | $(TRUNNER_BINARY)-extras
688 $$(call msg,BINARY,,$$@)
689 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) $$(LDFLAGS) -o $$@
690 $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.bpf.o $$@
691 $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/$(USE_BOOTSTRAP)bpftool \
692 $(OUTPUT)/$(if $2,$2/)bpftool
693
694endef
695
696# Define test_progs test runner.
697TRUNNER_TESTS_DIR := prog_tests
698TRUNNER_BPF_PROGS_DIR := progs
699TRUNNER_EXTRA_SOURCES := test_progs.c \
700 cgroup_helpers.c \
701 trace_helpers.c \
702 network_helpers.c \
703 testing_helpers.c \
704 btf_helpers.c \
705 cap_helpers.c \
706 unpriv_helpers.c \
707 netlink_helpers.c \
708 jit_disasm_helpers.c \
709 io_helpers.c \
710 test_loader.c \
711 xsk.c \
712 disasm.c \
713 disasm_helpers.c \
714 json_writer.c \
715 flow_dissector_load.h \
716 ip_check_defrag_frags.h
717TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read \
718 $(OUTPUT)/liburandom_read.so \
719 $(OUTPUT)/xdp_synproxy \
720 $(OUTPUT)/sign-file \
721 $(OUTPUT)/uprobe_multi \
722 $(TEST_KMOD_TARGETS) \
723 ima_setup.sh \
724 verify_sig_setup.sh \
725 $(wildcard progs/btf_dump_test_case_*.c) \
726 $(wildcard progs/*.bpf.o)
727TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
728TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS
729$(eval $(call DEFINE_TEST_RUNNER,test_progs))
730
731# Define test_progs-no_alu32 test runner.
732TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE
733TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS)
734$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32))
735
736# Define test_progs-cpuv4 test runner.
737ifneq ($(CLANG_CPUV4),)
738TRUNNER_BPF_BUILD_RULE := CLANG_CPUV4_BPF_BUILD_RULE
739TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS
740$(eval $(call DEFINE_TEST_RUNNER,test_progs,cpuv4))
741endif
742
743# Define test_progs BPF-GCC-flavored test runner.
744ifneq ($(BPF_GCC),)
745TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
746TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc,)
747$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
748endif
749
750# Define test_maps test runner.
751TRUNNER_TESTS_DIR := map_tests
752TRUNNER_BPF_PROGS_DIR := progs
753TRUNNER_EXTRA_SOURCES := test_maps.c
754TRUNNER_EXTRA_FILES :=
755TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built)
756TRUNNER_BPF_CFLAGS :=
757$(eval $(call DEFINE_TEST_RUNNER,test_maps))
758
759# Define test_verifier test runner.
760# It is much simpler than test_maps/test_progs and sufficiently different from
761# them (e.g., test.h is using completely pattern), that it's worth just
762# explicitly defining all the rules explicitly.
763verifier/tests.h: verifier/*.c
764 $(shell ( cd verifier/; \
765 echo '/* Generated header, do not edit */'; \
766 echo '#ifdef FILL_ARRAY'; \
767 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \
768 echo '#endif' \
769 ) > verifier/tests.h)
770$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT)
771 $(call msg,BINARY,,$@)
772 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
773
774# Include find_bit.c to compile xskxceiver.
775EXTRA_SRC := $(TOOLSDIR)/lib/find_bit.c
776$(OUTPUT)/xskxceiver: $(EXTRA_SRC) xskxceiver.c xskxceiver.h $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xsk_xdp_progs.skel.h $(BPFOBJ) | $(OUTPUT)
777 $(call msg,BINARY,,$@)
778 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
779
780$(OUTPUT)/xdp_hw_metadata: xdp_hw_metadata.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xdp_hw_metadata.skel.h | $(OUTPUT)
781 $(call msg,BINARY,,$@)
782 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
783
784$(OUTPUT)/xdp_features: xdp_features.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xdp_features.skel.h | $(OUTPUT)
785 $(call msg,BINARY,,$@)
786 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
787
788# Make sure we are able to include and link libbpf against c++.
789CXXFLAGS += $(CFLAGS)
790CXXFLAGS := $(subst -D_GNU_SOURCE=,,$(CXXFLAGS))
791CXXFLAGS := $(subst -std=gnu11,-std=gnu++11,$(CXXFLAGS))
792$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ)
793 $(call msg,CXX,,$@)
794 $(Q)$(CXX) $(CXXFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@
795
796# Benchmark runner
797$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ)
798 $(call msg,CC,,$@)
799 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@
800$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h
801$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h
802$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \
803 $(OUTPUT)/perfbuf_bench.skel.h
804$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h
805$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h
806$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h
807$(OUTPUT)/bench_bpf_hashmap_full_update.o: $(OUTPUT)/bpf_hashmap_full_update_bench.skel.h
808$(OUTPUT)/bench_local_storage.o: $(OUTPUT)/local_storage_bench.skel.h
809$(OUTPUT)/bench_local_storage_rcu_tasks_trace.o: $(OUTPUT)/local_storage_rcu_tasks_trace_bench.skel.h
810$(OUTPUT)/bench_local_storage_create.o: $(OUTPUT)/bench_local_storage_create.skel.h
811$(OUTPUT)/bench_bpf_hashmap_lookup.o: $(OUTPUT)/bpf_hashmap_lookup.skel.h
812$(OUTPUT)/bench_htab_mem.o: $(OUTPUT)/htab_mem_bench.skel.h
813$(OUTPUT)/bench_bpf_crypto.o: $(OUTPUT)/crypto_bench.skel.h
814$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ)
815$(OUTPUT)/bench: LDLIBS += -lm
816$(OUTPUT)/bench: $(OUTPUT)/bench.o \
817 $(TESTING_HELPERS) \
818 $(TRACE_HELPERS) \
819 $(CGROUP_HELPERS) \
820 $(OUTPUT)/bench_count.o \
821 $(OUTPUT)/bench_rename.o \
822 $(OUTPUT)/bench_trigger.o \
823 $(OUTPUT)/bench_ringbufs.o \
824 $(OUTPUT)/bench_bloom_filter_map.o \
825 $(OUTPUT)/bench_bpf_loop.o \
826 $(OUTPUT)/bench_strncmp.o \
827 $(OUTPUT)/bench_bpf_hashmap_full_update.o \
828 $(OUTPUT)/bench_local_storage.o \
829 $(OUTPUT)/bench_local_storage_rcu_tasks_trace.o \
830 $(OUTPUT)/bench_bpf_hashmap_lookup.o \
831 $(OUTPUT)/bench_local_storage_create.o \
832 $(OUTPUT)/bench_htab_mem.o \
833 $(OUTPUT)/bench_bpf_crypto.o \
834 #
835 $(call msg,BINARY,,$@)
836 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
837
838$(OUTPUT)/veristat.o: $(BPFOBJ)
839$(OUTPUT)/veristat: $(OUTPUT)/veristat.o
840 $(call msg,BINARY,,$@)
841 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
842
843# Linking uprobe_multi can fail due to relocation overflows on mips.
844$(OUTPUT)/uprobe_multi: CFLAGS += $(if $(filter mips, $(ARCH)),-mxgot)
845$(OUTPUT)/uprobe_multi: uprobe_multi.c uprobe_multi.ld
846 $(call msg,BINARY,,$@)
847 $(Q)$(CC) $(CFLAGS) -Wl,-T,uprobe_multi.ld -O0 $(LDFLAGS) \
848 $(filter-out %.ld,$^) $(LDLIBS) -o $@
849
850EXTRA_CLEAN := $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \
851 prog_tests/tests.h map_tests/tests.h verifier/tests.h \
852 feature bpftool $(TEST_KMOD_TARGETS) \
853 $(addprefix $(OUTPUT)/,*.o *.d *.skel.h *.lskel.h *.subskel.h \
854 no_alu32 cpuv4 bpf_gcc \
855 liburandom_read.so) \
856 $(OUTPUT)/FEATURE-DUMP.selftests
857
858.PHONY: docs docs-clean
859
860# Delete partially updated (corrupted) files on error
861.DELETE_ON_ERROR:
862
863DEFAULT_INSTALL_RULE := $(INSTALL_RULE)
864override define INSTALL_RULE
865 $(DEFAULT_INSTALL_RULE)
866 @for DIR in $(TEST_INST_SUBDIRS); do \
867 mkdir -p $(INSTALL_PATH)/$$DIR; \
868 rsync -a $(OUTPUT)/$$DIR/*.bpf.o $(INSTALL_PATH)/$$DIR;\
869 done
870endef