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) $(MENDIAN) \ 187 -I$(INCLUDE_DIR) 188 189CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \ 190 -Wno-compare-distinct-pointer-types 191 192# Build BPF object using Clang 193# $1 - input .c file 194# $2 - output .o file 195# $3 - CFLAGS 196define CLANG_BPF_BUILD_RULE 197 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) 198 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v3 -o $2 199endef 200# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32 201define CLANG_NOALU32_BPF_BUILD_RULE 202 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) 203 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v2 -o $2 204endef 205# Build BPF object using GCC 206define GCC_BPF_BUILD_RULE 207 $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2) 208 $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2 209endef 210 211BPF_PROGS_DIR := progs 212BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE 213BPF_SRCS := $(notdir $(wildcard $(BPF_PROGS_DIR)/*.c)) 214BPF_OBJS := $(patsubst %.c,$(OUTPUT)/%.bpf.o, $(BPF_SRCS)) 215BPF_SKELS := $(patsubst %.c,$(OUTPUT)/%.skel.h, $(BPF_SRCS)) 216TEST_GEN_FILES += $(BPF_OBJS) 217 218$(BPF_PROGS_DIR)-bpfobjs := y 219$(BPF_OBJS): $(OUTPUT)/%.bpf.o: \ 220 $(BPF_PROGS_DIR)/%.c \ 221 $(wildcard $(BPF_PROGS_DIR)/*.h) \ 222 $(INCLUDE_DIR)/vmlinux.h \ 223 $(wildcard $(BPFDIR)/hid_bpf_*.h) \ 224 $(wildcard $(BPFDIR)/*.bpf.h) \ 225 | $(OUTPUT) $(BPFOBJ) 226 $(call $(BPF_BUILD_RULE),$<,$@, $(BPF_CFLAGS)) 227 228$(BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(OUTPUT) 229 $(call msg,GEN-SKEL,$(BINARY),$@) 230 $(Q)$(BPFTOOL) gen object $(<:.o=.linked1.o) $< 231 $(Q)$(BPFTOOL) gen skeleton $(<:.o=.linked1.o) name $(notdir $(<:.bpf.o=)) > $@ 232 233$(OUTPUT)/%.o: %.c $(BPF_SKELS) hid_common.h 234 $(call msg,CC,,$@) 235 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@ 236 237$(OUTPUT)/%: $(OUTPUT)/%.o 238 $(call msg,BINARY,,$@) 239 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@ 240 241EXTRA_CLEAN := $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) feature bpftool \ 242 $(addprefix $(OUTPUT)/,*.o *.skel.h no_alu32) 243