| # SPDX-License-Identifier: GPL-2.0 |
| |
| # based on tools/testing/selftest/bpf/Makefile |
| include ../../../build/Build.include |
| include ../../../scripts/Makefile.arch |
| include ../../../scripts/Makefile.include |
| |
| TEST_PROGS := hid-core.sh |
| TEST_PROGS += hid-apple.sh |
| TEST_PROGS += hid-gamepad.sh |
| TEST_PROGS += hid-ite.sh |
| TEST_PROGS += hid-keyboard.sh |
| TEST_PROGS += hid-mouse.sh |
| TEST_PROGS += hid-multitouch.sh |
| TEST_PROGS += hid-sony.sh |
| TEST_PROGS += hid-tablet.sh |
| TEST_PROGS += hid-usb_crash.sh |
| TEST_PROGS += hid-wacom.sh |
| |
| CXX ?= $(CROSS_COMPILE)g++ |
| |
| HOSTPKG_CONFIG := pkg-config |
| |
| CFLAGS += -g -O0 -rdynamic -Wall -Werror -I$(OUTPUT) |
| CFLAGS += -I$(OUTPUT)/tools/include |
| |
| LDLIBS += -lelf -lz -lrt -lpthread |
| |
| # Silence some warnings when compiled with clang |
| ifneq ($(LLVM),) |
| CFLAGS += -Wno-unused-command-line-argument |
| endif |
| |
| # Order correspond to 'make run_tests' order |
| TEST_GEN_PROGS = hid_bpf |
| |
| # Emit succinct information message describing current building step |
| # $1 - generic step name (e.g., CC, LINK, etc); |
| # $2 - optional "flavor" specifier; if provided, will be emitted as [flavor]; |
| # $3 - target (assumed to be file); only file name will be emitted; |
| # $4 - optional extra arg, emitted as-is, if provided. |
| ifeq ($(V),1) |
| Q = |
| msg = |
| else |
| Q = @ |
| msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))"; |
| MAKEFLAGS += --no-print-directory |
| submake_extras := feature_display=0 |
| endif |
| |
| # override lib.mk's default rules |
| OVERRIDE_TARGETS := 1 |
| override define CLEAN |
| $(call msg,CLEAN) |
| $(Q)$(RM) -r $(TEST_GEN_PROGS) |
| $(Q)$(RM) -r $(EXTRA_CLEAN) |
| endef |
| |
| include ../lib.mk |
| |
| TOOLSDIR := $(top_srcdir)/tools |
| LIBDIR := $(TOOLSDIR)/lib |
| BPFDIR := $(LIBDIR)/bpf |
| TOOLSINCDIR := $(TOOLSDIR)/include |
| BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool |
| SCRATCH_DIR := $(OUTPUT)/tools |
| BUILD_DIR := $(SCRATCH_DIR)/build |
| INCLUDE_DIR := $(SCRATCH_DIR)/include |
| BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a |
| ifneq ($(CROSS_COMPILE),) |
| HOST_BUILD_DIR := $(BUILD_DIR)/host |
| HOST_SCRATCH_DIR := $(OUTPUT)/host-tools |
| HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include |
| else |
| HOST_BUILD_DIR := $(BUILD_DIR) |
| HOST_SCRATCH_DIR := $(SCRATCH_DIR) |
| HOST_INCLUDE_DIR := $(INCLUDE_DIR) |
| endif |
| HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a |
| RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids |
| |
| VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \ |
| $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \ |
| ../../../../vmlinux \ |
| /sys/kernel/btf/vmlinux \ |
| /boot/vmlinux-$(shell uname -r) |
| VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) |
| ifeq ($(VMLINUX_BTF),) |
| $(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)") |
| endif |
| |
| # Define simple and short `make test_progs`, `make test_sysctl`, etc targets |
| # to build individual tests. |
| # NOTE: Semicolon at the end is critical to override lib.mk's default static |
| # rule for binaries. |
| $(notdir $(TEST_GEN_PROGS)): %: $(OUTPUT)/% ; |
| |
| # sort removes libbpf duplicates when not cross-building |
| MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \ |
| $(HOST_BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/resolve_btfids \ |
| $(INCLUDE_DIR)) |
| $(MAKE_DIRS): |
| $(call msg,MKDIR,,$@) |
| $(Q)mkdir -p $@ |
| |
| # LLVM's ld.lld doesn't support all the architectures, so use it only on x86 |
| ifeq ($(SRCARCH),x86) |
| LLD := lld |
| else |
| LLD := ld |
| endif |
| |
| DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool |
| |
| TEST_GEN_PROGS_EXTENDED += $(DEFAULT_BPFTOOL) |
| |
| $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ) |
| |
| BPFTOOL ?= $(DEFAULT_BPFTOOL) |
| $(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ |
| $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool |
| $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ |
| ARCH= CROSS_COMPILE= CC=$(HOSTCC) LD=$(HOSTLD) \ |
| EXTRA_CFLAGS='-g -O0' \ |
| OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ |
| LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ |
| LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \ |
| prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin |
| |
| $(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ |
| | $(BUILD_DIR)/libbpf |
| $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \ |
| EXTRA_CFLAGS='-g -O0' \ |
| DESTDIR=$(SCRATCH_DIR) prefix= all install_headers |
| |
| ifneq ($(BPFOBJ),$(HOST_BPFOBJ)) |
| $(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ |
| | $(HOST_BUILD_DIR)/libbpf |
| $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \ |
| EXTRA_CFLAGS='-g -O0' ARCH= CROSS_COMPILE= \ |
| OUTPUT=$(HOST_BUILD_DIR)/libbpf/ CC=$(HOSTCC) LD=$(HOSTLD) \ |
| DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers |
| endif |
| |
| $(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR) |
| ifeq ($(VMLINUX_H),) |
| $(call msg,GEN,,$@) |
| $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@ |
| else |
| $(call msg,CP,,$@) |
| $(Q)cp "$(VMLINUX_H)" $@ |
| endif |
| |
| $(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \ |
| $(TOOLSDIR)/bpf/resolve_btfids/main.c \ |
| $(TOOLSDIR)/lib/rbtree.c \ |
| $(TOOLSDIR)/lib/zalloc.c \ |
| $(TOOLSDIR)/lib/string.c \ |
| $(TOOLSDIR)/lib/ctype.c \ |
| $(TOOLSDIR)/lib/str_error_r.c |
| $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \ |
| CC=$(HOSTCC) LD=$(HOSTLD) AR=$(HOSTAR) \ |
| LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \ |
| OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ) |
| |
| # Get Clang's default includes on this system, as opposed to those seen by |
| # '--target=bpf'. This fixes "missing" files on some architectures/distros, |
| # such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc. |
| # |
| # Use '-idirafter': Don't interfere with include mechanics except where the |
| # build would have failed anyways. |
| define get_sys_includes |
| $(shell $(1) -v -E - </dev/null 2>&1 \ |
| | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \ |
| $(shell $(1) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') |
| endef |
| |
| # Determine target endianness. |
| IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \ |
| grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__') |
| MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian) |
| |
| CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG)) |
| BPF_CFLAGS = -g -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ |
| -I$(INCLUDE_DIR) |
| |
| CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \ |
| -Wno-compare-distinct-pointer-types |
| |
| # Build BPF object using Clang |
| # $1 - input .c file |
| # $2 - output .o file |
| # $3 - CFLAGS |
| define CLANG_BPF_BUILD_RULE |
| $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) |
| $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v3 -o $2 |
| endef |
| # Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32 |
| define CLANG_NOALU32_BPF_BUILD_RULE |
| $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2) |
| $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v2 -o $2 |
| endef |
| # Build BPF object using GCC |
| define GCC_BPF_BUILD_RULE |
| $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2) |
| $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2 |
| endef |
| |
| BPF_PROGS_DIR := progs |
| BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE |
| BPF_SRCS := $(notdir $(wildcard $(BPF_PROGS_DIR)/*.c)) |
| BPF_OBJS := $(patsubst %.c,$(OUTPUT)/%.bpf.o, $(BPF_SRCS)) |
| BPF_SKELS := $(patsubst %.c,$(OUTPUT)/%.skel.h, $(BPF_SRCS)) |
| TEST_GEN_FILES += $(BPF_OBJS) |
| |
| $(BPF_PROGS_DIR)-bpfobjs := y |
| $(BPF_OBJS): $(OUTPUT)/%.bpf.o: \ |
| $(BPF_PROGS_DIR)/%.c \ |
| $(wildcard $(BPF_PROGS_DIR)/*.h) \ |
| $(INCLUDE_DIR)/vmlinux.h \ |
| $(wildcard $(BPFDIR)/hid_bpf_*.h) \ |
| $(wildcard $(BPFDIR)/*.bpf.h) \ |
| | $(OUTPUT) $(BPFOBJ) |
| $(call $(BPF_BUILD_RULE),$<,$@, $(BPF_CFLAGS)) |
| |
| $(BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(OUTPUT) |
| $(call msg,GEN-SKEL,$(BINARY),$@) |
| $(Q)$(BPFTOOL) gen object $(<:.o=.linked1.o) $< |
| $(Q)$(BPFTOOL) gen skeleton $(<:.o=.linked1.o) name $(notdir $(<:.bpf.o=)) > $@ |
| |
| $(OUTPUT)/%.o: %.c $(BPF_SKELS) |
| $(call msg,CC,,$@) |
| $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@ |
| |
| $(OUTPUT)/%: $(OUTPUT)/%.o |
| $(call msg,BINARY,,$@) |
| $(Q)$(LINK.c) $^ $(LDLIBS) -o $@ |
| |
| EXTRA_CLEAN := $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) feature bpftool \ |
| $(addprefix $(OUTPUT)/,*.o *.skel.h no_alu32) |
