Makefile

  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)