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 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) 238