xref: /linux/tools/testing/selftests/hid/Makefile (revision b2c4944e16744aee54e312b3be9c044130297f50) 
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-gamepad.sh
10TEST_PROGS += hid-keyboard.sh
11
12CXX ?= $(CROSS_COMPILE)g++
13
14HOSTPKG_CONFIG := pkg-config
15
16CFLAGS += -g -O0 -rdynamic -Wall -Werror -I$(KHDR_INCLUDES) -I$(OUTPUT)
17LDLIBS += -lelf -lz -lrt -lpthread
18
19# Silence some warnings when compiled with clang
20ifneq ($(LLVM),)
21CFLAGS += -Wno-unused-command-line-argument
22endif
23
24# Order correspond to 'make run_tests' order
25TEST_GEN_PROGS = hid_bpf
26
27# Emit succinct information message describing current building step
28# $1 - generic step name (e.g., CC, LINK, etc);
29# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor];
30# $3 - target (assumed to be file); only file name will be emitted;
31# $4 - optional extra arg, emitted as-is, if provided.
32ifeq ($(V),1)
33Q =
34msg =
35else
36Q = @
37msg = @printf '  %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";
38MAKEFLAGS += --no-print-directory
39submake_extras := feature_display=0
40endif
41
42# override lib.mk's default rules
43OVERRIDE_TARGETS := 1
44override define CLEAN
45	$(call msg,CLEAN)
46	$(Q)$(RM) -r $(TEST_GEN_PROGS)
47	$(Q)$(RM) -r $(EXTRA_CLEAN)
48endef
49
50include ../lib.mk
51
52TOOLSDIR := $(top_srcdir)/tools
53LIBDIR := $(TOOLSDIR)/lib
54BPFDIR := $(LIBDIR)/bpf
55TOOLSINCDIR := $(TOOLSDIR)/include
56BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool
57SCRATCH_DIR := $(OUTPUT)/tools
58BUILD_DIR := $(SCRATCH_DIR)/build
59INCLUDE_DIR := $(SCRATCH_DIR)/include
60KHDR_INCLUDES := $(SCRATCH_DIR)/uapi/include
61BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
62ifneq ($(CROSS_COMPILE),)
63HOST_BUILD_DIR		:= $(BUILD_DIR)/host
64HOST_SCRATCH_DIR	:= $(OUTPUT)/host-tools
65HOST_INCLUDE_DIR	:= $(HOST_SCRATCH_DIR)/include
66else
67HOST_BUILD_DIR		:= $(BUILD_DIR)
68HOST_SCRATCH_DIR	:= $(SCRATCH_DIR)
69HOST_INCLUDE_DIR	:= $(INCLUDE_DIR)
70endif
71HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a
72RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids
73
74VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux)				\
75		     $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux)	\
76		     ../../../../vmlinux				\
77		     /sys/kernel/btf/vmlinux				\
78		     /boot/vmlinux-$(shell uname -r)
79VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
80ifeq ($(VMLINUX_BTF),)
81$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)")
82endif
83
84# Define simple and short `make test_progs`, `make test_sysctl`, etc targets
85# to build individual tests.
86# NOTE: Semicolon at the end is critical to override lib.mk's default static
87# rule for binaries.
88$(notdir $(TEST_GEN_PROGS)): %: $(OUTPUT)/% ;
89
90# sort removes libbpf duplicates when not cross-building
91MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf		\
92	       $(HOST_BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/resolve_btfids	\
93	       $(INCLUDE_DIR))
94$(MAKE_DIRS):
95	$(call msg,MKDIR,,$@)
96	$(Q)mkdir -p $@
97
98# LLVM's ld.lld doesn't support all the architectures, so use it only on x86
99ifeq ($(SRCARCH),x86)
100LLD := lld
101else
102LLD := ld
103endif
104
105DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool
106
107TEST_GEN_PROGS_EXTENDED += $(DEFAULT_BPFTOOL)
108
109$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ)
110
111BPFTOOL ?= $(DEFAULT_BPFTOOL)
112$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile)    \
113		    $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool
114	$(Q)$(MAKE) $(submake_extras)  -C $(BPFTOOLDIR)			       \
115		    ARCH= CROSS_COMPILE= CC=$(HOSTCC) LD=$(HOSTLD) 	       \
116		    EXTRA_CFLAGS='-g -O0'				       \
117		    OUTPUT=$(HOST_BUILD_DIR)/bpftool/			       \
118		    LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/		       \
119		    LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/			       \
120		    prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin
121
122$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile)		       \
123	   | $(BUILD_DIR)/libbpf
124	$(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
125		    EXTRA_CFLAGS='-g -O0'				       \
126		    DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
127
128ifneq ($(BPFOBJ),$(HOST_BPFOBJ))
129$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile)		       \
130		| $(HOST_BUILD_DIR)/libbpf
131	$(Q)$(MAKE) $(submake_extras) -C $(BPFDIR)                             \
132		    EXTRA_CFLAGS='-g -O0' ARCH= CROSS_COMPILE=		       \
133		    OUTPUT=$(HOST_BUILD_DIR)/libbpf/ CC=$(HOSTCC) LD=$(HOSTLD) \
134		    DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers
135endif
136
137$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR)
138ifeq ($(VMLINUX_H),)
139	$(call msg,GEN,,$@)
140	$(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@
141else
142	$(call msg,CP,,$@)
143	$(Q)cp "$(VMLINUX_H)" $@
144endif
145
146$(KHDR_INCLUDES)/linux/hid.h: $(top_srcdir)/include/uapi/linux/hid.h
147	$(MAKE) -C $(top_srcdir) INSTALL_HDR_PATH=$(SCRATCH_DIR)/uapi headers_install
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) $(MENDIAN) 		\
180	     -I$(INCLUDE_DIR)
181
182CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
183	       -Wno-compare-distinct-pointer-types
184
185# Build BPF object using Clang
186# $1 - input .c file
187# $2 - output .o file
188# $3 - CFLAGS
189define CLANG_BPF_BUILD_RULE
190	$(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
191	$(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v3 -o $2
192endef
193# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
194define CLANG_NOALU32_BPF_BUILD_RULE
195	$(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
196	$(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v2 -o $2
197endef
198# Build BPF object using GCC
199define GCC_BPF_BUILD_RULE
200	$(call msg,GCC-BPF,$(TRUNNER_BINARY),$2)
201	$(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2
202endef
203
204BPF_PROGS_DIR := progs
205BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
206BPF_SRCS := $(notdir $(wildcard $(BPF_PROGS_DIR)/*.c))
207BPF_OBJS := $(patsubst %.c,$(OUTPUT)/%.bpf.o, $(BPF_SRCS))
208BPF_SKELS := $(patsubst %.c,$(OUTPUT)/%.skel.h, $(BPF_SRCS))
209TEST_GEN_FILES += $(BPF_OBJS)
210
211$(BPF_PROGS_DIR)-bpfobjs := y
212$(BPF_OBJS): $(OUTPUT)/%.bpf.o:				\
213	     $(BPF_PROGS_DIR)/%.c			\
214	     $(wildcard $(BPF_PROGS_DIR)/*.h)		\
215	     $(INCLUDE_DIR)/vmlinux.h				\
216	     $(wildcard $(BPFDIR)/hid_bpf_*.h)			\
217	     $(wildcard $(BPFDIR)/*.bpf.h)			\
218	     | $(OUTPUT) $(BPFOBJ)
219	$(call $(BPF_BUILD_RULE),$<,$@, $(BPF_CFLAGS))
220
221$(BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(OUTPUT)
222	$(call msg,GEN-SKEL,$(BINARY),$@)
223	$(Q)$(BPFTOOL) gen object $(<:.o=.linked1.o) $<
224	$(Q)$(BPFTOOL) gen skeleton $(<:.o=.linked1.o) name $(notdir $(<:.bpf.o=)) > $@
225
226$(OUTPUT)/%.o: %.c $(BPF_SKELS) $(KHDR_INCLUDES)/linux/hid.h
227	$(call msg,CC,,$@)
228	$(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
229
230$(OUTPUT)/%: $(OUTPUT)/%.o
231	$(call msg,BINARY,,$@)
232	$(Q)$(LINK.c) $^ $(LDLIBS) -o $@
233
234EXTRA_CLEAN := $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) feature bpftool	\
235	$(addprefix $(OUTPUT)/,*.o *.skel.h no_alu32)
236