projects/linux·blob master · refs

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1# SPDX-License-Identifier: GPL-2.0
2
3# based on tools/testing/selftest/bpf/Makefile
4include ../../../build/Build.include
5include ../../../scripts/Makefile.arch
6include ../../../scripts/Makefile.include
7
8TEST_PROGS := hid-core.sh
9TEST_PROGS += hid-apple.sh
10TEST_PROGS += hid-gamepad.sh
11TEST_PROGS += hid-ite.sh
12TEST_PROGS += hid-keyboard.sh
13TEST_PROGS += hid-mouse.sh
14TEST_PROGS += hid-multitouch.sh
15TEST_PROGS += hid-sony.sh
16TEST_PROGS += hid-tablet.sh
17TEST_PROGS += hid-usb_crash.sh
18TEST_PROGS += hid-wacom.sh
19
20TEST_FILES := run-hid-tools-tests.sh
21TEST_FILES += tests
22
23CXX ?= $(CROSS_COMPILE)g++
24
25HOSTPKG_CONFIG := pkg-config
26
27CFLAGS += -g -O0 -rdynamic -Wall -Werror -I$(OUTPUT) $(KHDR_INCLUDES)
28CFLAGS += -I$(OUTPUT)/tools/include
29
30LDLIBS += -lelf -lz -lrt -lpthread
31
32# Silence some warnings when compiled with clang
33ifneq ($(LLVM),)
34CFLAGS += -Wno-unused-command-line-argument
35endif
36
37# Order correspond to 'make run_tests' order
38TEST_GEN_PROGS = hid_bpf hidraw
39
40# Emit succinct information message describing current building step
41# $1 - generic step name (e.g., CC, LINK, etc);
42# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor];
43# $3 - target (assumed to be file); only file name will be emitted;
44# $4 - optional extra arg, emitted as-is, if provided.
45ifeq ($(V),1)
46msg =
47else
48msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";
49MAKEFLAGS += --no-print-directory
50submake_extras := feature_display=0
51endif
52
53# override lib.mk's default rules
54OVERRIDE_TARGETS := 1
55override define CLEAN
56 $(call msg,CLEAN)
57 $(Q)$(RM) -r $(TEST_GEN_PROGS)
58 $(Q)$(RM) -r $(EXTRA_CLEAN)
59endef
60
61include ../lib.mk
62
63TOOLSDIR := $(top_srcdir)/tools
64LIBDIR := $(TOOLSDIR)/lib
65BPFDIR := $(LIBDIR)/bpf
66TOOLSINCDIR := $(TOOLSDIR)/include
67BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool
68SCRATCH_DIR := $(OUTPUT)/tools
69BUILD_DIR := $(SCRATCH_DIR)/build
70INCLUDE_DIR := $(SCRATCH_DIR)/include
71BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
72ifneq ($(CROSS_COMPILE),)
73HOST_BUILD_DIR := $(BUILD_DIR)/host
74HOST_SCRATCH_DIR := $(OUTPUT)/host-tools
75HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include
76else
77HOST_BUILD_DIR := $(BUILD_DIR)
78HOST_SCRATCH_DIR := $(SCRATCH_DIR)
79HOST_INCLUDE_DIR := $(INCLUDE_DIR)
80endif
81HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a
82RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids
83
84VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \
85 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \
86 ../../../../vmlinux \
87 /sys/kernel/btf/vmlinux \
88 /boot/vmlinux-$(shell uname -r)
89VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
90ifeq ($(VMLINUX_BTF),)
91$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)")
92endif
93
94# Define simple and short `make test_progs`, `make test_sysctl`, etc targets
95# to build individual tests.
96# NOTE: Semicolon at the end is critical to override lib.mk's default static
97# rule for binaries.
98$(notdir $(TEST_GEN_PROGS)): %: $(OUTPUT)/% ;
99
100# sort removes libbpf duplicates when not cross-building
101MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \
102 $(HOST_BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/resolve_btfids \
103 $(INCLUDE_DIR))
104$(MAKE_DIRS):
105 $(call msg,MKDIR,,$@)
106 $(Q)mkdir -p $@
107
108DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool
109
110TEST_GEN_PROGS_EXTENDED += $(DEFAULT_BPFTOOL)
111
112$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ)
113
114BPFTOOL ?= $(DEFAULT_BPFTOOL)
115$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
116 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool
117 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
118 ARCH= CROSS_COMPILE= CC=$(HOSTCC) LD=$(HOSTLD) \
119 EXTRA_CFLAGS='-g -O0' \
120 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
121 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
122 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \
123 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin
124
125$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
126 | $(BUILD_DIR)/libbpf
127 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
128 EXTRA_CFLAGS='-g -O0' \
129 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
130
131ifneq ($(BPFOBJ),$(HOST_BPFOBJ))
132$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
133 | $(HOST_BUILD_DIR)/libbpf
134 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \
135 EXTRA_CFLAGS='-g -O0' ARCH= CROSS_COMPILE= \
136 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ CC=$(HOSTCC) LD=$(HOSTLD) \
137 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers
138endif
139
140$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR)
141ifeq ($(VMLINUX_H),)
142 $(call msg,GEN,,$@)
143 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@
144else
145 $(call msg,CP,,$@)
146 $(Q)cp "$(VMLINUX_H)" $@
147endif
148
149$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \
150 $(TOOLSDIR)/bpf/resolve_btfids/main.c \
151 $(TOOLSDIR)/lib/rbtree.c \
152 $(TOOLSDIR)/lib/zalloc.c \
153 $(TOOLSDIR)/lib/string.c \
154 $(TOOLSDIR)/lib/ctype.c \
155 $(TOOLSDIR)/lib/str_error_r.c
156 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \
157 CC=$(HOSTCC) LD=$(HOSTLD) AR=$(HOSTAR) \
158 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \
159 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ)
160
161# Get Clang's default includes on this system, as opposed to those seen by
162# '--target=bpf'. This fixes "missing" files on some architectures/distros,
163# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
164#
165# Use '-idirafter': Don't interfere with include mechanics except where the
166# build would have failed anyways.
167define get_sys_includes
168$(shell $(1) -v -E - </dev/null 2>&1 \
169 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \
170$(shell $(1) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}')
171endef
172
173# Determine target endianness.
174IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
175 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
176MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
177
178CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
179BPF_CFLAGS = -g -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \
180 -Wno-microsoft-anon-tag \
181 -fms-extensions \
182 -I$(INCLUDE_DIR)
183
184CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
185 -Wno-compare-distinct-pointer-types
186
187# Build BPF object using Clang
188# $1 - input .c file
189# $2 - output .o file
190# $3 - CFLAGS
191define CLANG_BPF_BUILD_RULE
192 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
193 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v3 -o $2
194endef
195# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
196define CLANG_NOALU32_BPF_BUILD_RULE
197 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
198 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v2 -o $2
199endef
200# Build BPF object using GCC
201define GCC_BPF_BUILD_RULE
202 $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2)
203 $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2
204endef
205
206BPF_PROGS_DIR := progs
207BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
208BPF_SRCS := $(notdir $(wildcard $(BPF_PROGS_DIR)/*.c))
209BPF_OBJS := $(patsubst %.c,$(OUTPUT)/%.bpf.o, $(BPF_SRCS))
210BPF_SKELS := $(patsubst %.c,$(OUTPUT)/%.skel.h, $(BPF_SRCS))
211TEST_GEN_FILES += $(BPF_OBJS)
212
213$(BPF_PROGS_DIR)-bpfobjs := y
214$(BPF_OBJS): $(OUTPUT)/%.bpf.o: \
215 $(BPF_PROGS_DIR)/%.c \
216 $(wildcard $(BPF_PROGS_DIR)/*.h) \
217 $(INCLUDE_DIR)/vmlinux.h \
218 $(wildcard $(BPFDIR)/hid_bpf_*.h) \
219 $(wildcard $(BPFDIR)/*.bpf.h) \
220 | $(OUTPUT) $(BPFOBJ)
221 $(call $(BPF_BUILD_RULE),$<,$@, $(BPF_CFLAGS))
222
223$(BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(OUTPUT)
224 $(call msg,GEN-SKEL,$(BINARY),$@)
225 $(Q)$(BPFTOOL) gen object $(<:.o=.linked1.o) $<
226 $(Q)$(BPFTOOL) gen skeleton $(<:.o=.linked1.o) name $(notdir $(<:.bpf.o=)) > $@
227
228$(OUTPUT)/%.o: %.c $(BPF_SKELS) hid_common.h
229 $(call msg,CC,,$@)
230 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
231
232$(OUTPUT)/%: $(OUTPUT)/%.o
233 $(call msg,BINARY,,$@)
234 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@
235
236EXTRA_CLEAN := $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) feature bpftool \
237 $(addprefix $(OUTPUT)/,*.o *.skel.h no_alu32)