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 ?= $(CROSS_COMPILE)g++ 24 25HOSTPKG_CONFIG := pkg-config 26 27CFLAGS += -g -O0 -rdynamic -Wall -Werror -I$(KHDR_INCLUDES) -I$(OUTPUT) 28LDLIBS += -lelf -lz -lrt -lpthread 29 30# Silence some warnings when compiled with clang 31ifneq ($(LLVM),) 32CFLAGS += -Wno-unused-command-line-argument 33endif 34 35# Order correspond to 'make run_tests' order 36TEST_GEN_PROGS = hid_bpf 37 38# Emit succinct information message describing current building step 39# $1 - generic step name (e.g., CC, LINK, etc); 40# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor]; 41# $3 - target (assumed to be file); only file name will be emitted; 42# $4 - optional extra arg, emitted as-is, if provided. 43ifeq ($(V),1) 44Q = 45msg = 46else 47Q = @ 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 71KHDR_INCLUDES := $(SCRATCH_DIR)/uapi/include 72BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a 73ifneq ($(CROSS_COMPILE),) 74HOST_BUILD_DIR := $(BUILD_DIR)/host 75HOST_SCRATCH_DIR := $(OUTPUT)/host-tools 76HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include 77else 78HOST_BUILD_DIR := $(BUILD_DIR) 79HOST_SCRATCH_DIR := $(SCRATCH_DIR) 80HOST_INCLUDE_DIR := $(INCLUDE_DIR) 81endif 82HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a 83RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids 84 85VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \ 86 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \ 87 ../../../../vmlinux \ 88 /sys/kernel/btf/vmlinux \ 89 /boot/vmlinux-$(shell uname -r) 90VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) 91ifeq ($(VMLINUX_BTF),) 92$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)") 93endif 94 95# Define simple and short `make test_progs`, `make test_sysctl`, etc targets 96# to build individual tests. 97# NOTE: Semicolon at the end is critical to override lib.mk's default static 98# rule for binaries. 99$(notdir $(TEST_GEN_PROGS)): %: $(OUTPUT)/% ; 100 101# sort removes libbpf duplicates when not cross-building 102MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \ 103 $(HOST_BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/resolve_btfids \ 104 $(INCLUDE_DIR)) 105$(MAKE_DIRS): 106 $(call msg,MKDIR,,$@) 107 $(Q)mkdir -p $@ 108 109# LLVM's ld.lld doesn't support all the architectures, so use it only on x86 110ifeq ($(SRCARCH),x86) 111LLD := lld 112else 113LLD := ld 114endif 115 116DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool 117 118TEST_GEN_PROGS_EXTENDED += $(DEFAULT_BPFTOOL) 119 120$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ) 121 122BPFTOOL ?= $(DEFAULT_BPFTOOL) 123$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ 124 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool 125 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ 126 ARCH= CROSS_COMPILE= CC=$(HOSTCC) LD=$(HOSTLD) \ 127 EXTRA_CFLAGS='-g -O0' \ 128 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ 129 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ 130 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \ 131 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin 132 133$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 134 | $(BUILD_DIR)/libbpf 135 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \ 136 EXTRA_CFLAGS='-g -O0' \ 137 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers 138 139ifneq ($(BPFOBJ),$(HOST_BPFOBJ)) 140$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ 141 | $(HOST_BUILD_DIR)/libbpf 142 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \ 143 EXTRA_CFLAGS='-g -O0' ARCH= CROSS_COMPILE= \ 144 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ CC=$(HOSTCC) LD=$(HOSTLD) \ 145 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers 146endif 147 148$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR) 149ifeq ($(VMLINUX_H),) 150 $(call msg,GEN,,$@) 151 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@ 152else 153 $(call msg,CP,,$@) 154 $(Q)cp "$(VMLINUX_H)" $@ 155endif 156 157$(KHDR_INCLUDES)/linux/hid.h: $(top_srcdir)/include/uapi/linux/hid.h 158 $(MAKE) -C $(top_srcdir) INSTALL_HDR_PATH=$(SCRATCH_DIR)/uapi headers_install 159 160$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \ 161 $(TOOLSDIR)/bpf/resolve_btfids/main.c \ 162 $(TOOLSDIR)/lib/rbtree.c \ 163 $(TOOLSDIR)/lib/zalloc.c \ 164 $(TOOLSDIR)/lib/string.c \ 165 $(TOOLSDIR)/lib/ctype.c \ 166 $(TOOLSDIR)/lib/str_error_r.c 167 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \ 168 CC=$(HOSTCC) LD=$(HOSTLD) AR=$(HOSTAR) \ 169 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \ 170 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ) 171 172# Get Clang's default includes on this system, as opposed to those seen by 173# '--target=bpf'. This fixes "missing" files on some architectures/distros, 174# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. 175# 176# Use '-idirafter': Don't interfere with include mechanics except where the 177# build would have failed anyways. 178define get_sys_includes 179$(shell $(1) -v -E - </dev/null 2>&1 \ 180 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \ 181$(shell $(1) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') 182endef 183 184# Determine target endianness. 185IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \ 186 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__') 187MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian) 188 189CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG)) 190BPF_CFLAGS = -g -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ 191 -I$(INCLUDE_DIR) 192 193CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \ 194 -Wno-compare-distinct-pointer-types 195 196# Build BPF object using Clang 197# $1 - input .c file 198# $2 - output .o file 199# $3 - CFLAGS 200define CLANG_BPF_BUILD_RULE 201 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) 202 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v3 -o $2 203endef 204# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32 205define CLANG_NOALU32_BPF_BUILD_RULE 206 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) 207 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v2 -o $2 208endef 209# Build BPF object using GCC 210define GCC_BPF_BUILD_RULE 211 $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2) 212 $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2 213endef 214 215BPF_PROGS_DIR := progs 216BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE 217BPF_SRCS := $(notdir $(wildcard $(BPF_PROGS_DIR)/*.c)) 218BPF_OBJS := $(patsubst %.c,$(OUTPUT)/%.bpf.o, $(BPF_SRCS)) 219BPF_SKELS := $(patsubst %.c,$(OUTPUT)/%.skel.h, $(BPF_SRCS)) 220TEST_GEN_FILES += $(BPF_OBJS) 221 222$(BPF_PROGS_DIR)-bpfobjs := y 223$(BPF_OBJS): $(OUTPUT)/%.bpf.o: \ 224 $(BPF_PROGS_DIR)/%.c \ 225 $(wildcard $(BPF_PROGS_DIR)/*.h) \ 226 $(INCLUDE_DIR)/vmlinux.h \ 227 $(wildcard $(BPFDIR)/hid_bpf_*.h) \ 228 $(wildcard $(BPFDIR)/*.bpf.h) \ 229 | $(OUTPUT) $(BPFOBJ) 230 $(call $(BPF_BUILD_RULE),$<,$@, $(BPF_CFLAGS)) 231 232$(BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(OUTPUT) 233 $(call msg,GEN-SKEL,$(BINARY),$@) 234 $(Q)$(BPFTOOL) gen object $(<:.o=.linked1.o) $< 235 $(Q)$(BPFTOOL) gen skeleton $(<:.o=.linked1.o) name $(notdir $(<:.bpf.o=)) > $@ 236 237$(OUTPUT)/%.o: %.c $(BPF_SKELS) $(KHDR_INCLUDES)/linux/hid.h 238 $(call msg,CC,,$@) 239 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@ 240 241$(OUTPUT)/%: $(OUTPUT)/%.o 242 $(call msg,BINARY,,$@) 243 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@ 244 245EXTRA_CLEAN := $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) feature bpftool \ 246 $(addprefix $(OUTPUT)/,*.o *.skel.h no_alu32) 247