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
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)
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 $@
107
108# LLVM's ld.lld doesn't support all the architectures, so use it only on x86
109ifeq ($(SRCARCH),x86)
110LLD := lld
111else
112LLD := ld
113endif
114
115DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool
116
117TEST_GEN_PROGS_EXTENDED += $(DEFAULT_BPFTOOL)
118
119$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ)
120
121BPFTOOL ?= $(DEFAULT_BPFTOOL)
122$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
123 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool
124 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
125 ARCH= CROSS_COMPILE= CC=$(HOSTCC) LD=$(HOSTLD) \
126 EXTRA_CFLAGS='-g -O0' \
127 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
128 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
129 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \
130 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin
131
132$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
133 | $(BUILD_DIR)/libbpf
134 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
135 EXTRA_CFLAGS='-g -O0' \
136 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
137
138ifneq ($(BPFOBJ),$(HOST_BPFOBJ))
139$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
140 | $(HOST_BUILD_DIR)/libbpf
141 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \
142 EXTRA_CFLAGS='-g -O0' ARCH= CROSS_COMPILE= \
143 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ CC=$(HOSTCC) LD=$(HOSTLD) \
144 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers
145endif
146
147$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR)
148ifeq ($(VMLINUX_H),)
149 $(call msg,GEN,,$@)
150 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@
151else
152 $(call msg,CP,,$@)
153 $(Q)cp "$(VMLINUX_H)" $@
154endif
155
156$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \
157 $(TOOLSDIR)/bpf/resolve_btfids/main.c \
158 $(TOOLSDIR)/lib/rbtree.c \
159 $(TOOLSDIR)/lib/zalloc.c \
160 $(TOOLSDIR)/lib/string.c \
161 $(TOOLSDIR)/lib/ctype.c \
162 $(TOOLSDIR)/lib/str_error_r.c
163 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \
164 CC=$(HOSTCC) LD=$(HOSTLD) AR=$(HOSTAR) \
165 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \
166 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ)
167
168# Get Clang's default includes on this system, as opposed to those seen by
169# '--target=bpf'. This fixes "missing" files on some architectures/distros,
170# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
171#
172# Use '-idirafter': Don't interfere with include mechanics except where the
173# build would have failed anyways.
174define get_sys_includes
175$(shell $(1) -v -E - </dev/null 2>&1 \
176 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \
177$(shell $(1) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}')
178endef
179
180# Determine target endianness.
181IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
182 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
183MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
184
185CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
186BPF_CFLAGS = -g -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \
187 -Wno-microsoft-anon-tag \
188 -fms-extensions \
189 -I$(INCLUDE_DIR)
190
191CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
192 -Wno-compare-distinct-pointer-types
193
194# Build BPF object using Clang
195# $1 - input .c file
196# $2 - output .o file
197# $3 - CFLAGS
198define CLANG_BPF_BUILD_RULE
199 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
200 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v3 -o $2
201endef
202# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
203define CLANG_NOALU32_BPF_BUILD_RULE
204 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
205 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v2 -o $2
206endef
207# Build BPF object using GCC
208define GCC_BPF_BUILD_RULE
209 $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2)
210 $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2
211endef
212
213BPF_PROGS_DIR := progs
214BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
215BPF_SRCS := $(notdir $(wildcard $(BPF_PROGS_DIR)/*.c))
216BPF_OBJS := $(patsubst %.c,$(OUTPUT)/%.bpf.o, $(BPF_SRCS))
217BPF_SKELS := $(patsubst %.c,$(OUTPUT)/%.skel.h, $(BPF_SRCS))
218TEST_GEN_FILES += $(BPF_OBJS)
219
220$(BPF_PROGS_DIR)-bpfobjs := y
221$(BPF_OBJS): $(OUTPUT)/%.bpf.o: \
222 $(BPF_PROGS_DIR)/%.c \
223 $(wildcard $(BPF_PROGS_DIR)/*.h) \
224 $(INCLUDE_DIR)/vmlinux.h \
225 $(wildcard $(BPFDIR)/hid_bpf_*.h) \
226 $(wildcard $(BPFDIR)/*.bpf.h) \
227 | $(OUTPUT) $(BPFOBJ)
228 $(call $(BPF_BUILD_RULE),$<,$@, $(BPF_CFLAGS))
229
230$(BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(OUTPUT)
231 $(call msg,GEN-SKEL,$(BINARY),$@)
232 $(Q)$(BPFTOOL) gen object $(<:.o=.linked1.o) $<
233 $(Q)$(BPFTOOL) gen skeleton $(<:.o=.linked1.o) name $(notdir $(<:.bpf.o=)) > $@
234
235$(OUTPUT)/%.o: %.c $(BPF_SKELS) hid_common.h
236 $(call msg,CC,,$@)
237 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
238
239$(OUTPUT)/%: $(OUTPUT)/%.o
240 $(call msg,BINARY,,$@)
241 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@
242
243EXTRA_CLEAN := $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) feature bpftool \
244 $(addprefix $(OUTPUT)/,*.o *.skel.h no_alu32)