xref: /linux/tools/testing/selftests/hid/Makefile (revision ffb85d5c9e80892466fe8cfead60a71f1ee7c918) 
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
9
10CXX ?= $(CROSS_COMPILE)g++
11
12HOSTPKG_CONFIG := pkg-config
13
14CFLAGS += -g -O0 -rdynamic -Wall -Werror -I$(KHDR_INCLUDES) -I$(OUTPUT)
15LDLIBS += -lelf -lz -lrt -lpthread
16
17# Silence some warnings when compiled with clang
18ifneq ($(LLVM),)
19CFLAGS += -Wno-unused-command-line-argument
20endif
21
22# Order correspond to 'make run_tests' order
23TEST_GEN_PROGS = hid_bpf
24
25# Emit succinct information message describing current building step
26# $1 - generic step name (e.g., CC, LINK, etc);
27# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor];
28# $3 - target (assumed to be file); only file name will be emitted;
29# $4 - optional extra arg, emitted as-is, if provided.
30ifeq ($(V),1)
31Q =
32msg =
33else
34Q = @
35msg = @printf '  %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";
36MAKEFLAGS += --no-print-directory
37submake_extras := feature_display=0
38endif
39
40# override lib.mk's default rules
41OVERRIDE_TARGETS := 1
42override define CLEAN
43	$(call msg,CLEAN)
44	$(Q)$(RM) -r $(TEST_GEN_PROGS)
45	$(Q)$(RM) -r $(EXTRA_CLEAN)
46endef
47
48include ../lib.mk
49
50TOOLSDIR := $(top_srcdir)/tools
51LIBDIR := $(TOOLSDIR)/lib
52BPFDIR := $(LIBDIR)/bpf
53TOOLSINCDIR := $(TOOLSDIR)/include
54BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool
55SCRATCH_DIR := $(OUTPUT)/tools
56BUILD_DIR := $(SCRATCH_DIR)/build
57INCLUDE_DIR := $(SCRATCH_DIR)/include
58KHDR_INCLUDES := $(SCRATCH_DIR)/uapi/include
59BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
60ifneq ($(CROSS_COMPILE),)
61HOST_BUILD_DIR		:= $(BUILD_DIR)/host
62HOST_SCRATCH_DIR	:= $(OUTPUT)/host-tools
63HOST_INCLUDE_DIR	:= $(HOST_SCRATCH_DIR)/include
64else
65HOST_BUILD_DIR		:= $(BUILD_DIR)
66HOST_SCRATCH_DIR	:= $(SCRATCH_DIR)
67HOST_INCLUDE_DIR	:= $(INCLUDE_DIR)
68endif
69HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a
70RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids
71
72VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux)				\
73		     $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux)	\
74		     ../../../../vmlinux				\
75		     /sys/kernel/btf/vmlinux				\
76		     /boot/vmlinux-$(shell uname -r)
77VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
78ifeq ($(VMLINUX_BTF),)
79$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)")
80endif
81
82# Define simple and short `make test_progs`, `make test_sysctl`, etc targets
83# to build individual tests.
84# NOTE: Semicolon at the end is critical to override lib.mk's default static
85# rule for binaries.
86$(notdir $(TEST_GEN_PROGS)): %: $(OUTPUT)/% ;
87
88# sort removes libbpf duplicates when not cross-building
89MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf		\
90	       $(HOST_BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/resolve_btfids	\
91	       $(INCLUDE_DIR))
92$(MAKE_DIRS):
93	$(call msg,MKDIR,,$@)
94	$(Q)mkdir -p $@
95
96# LLVM's ld.lld doesn't support all the architectures, so use it only on x86
97ifeq ($(SRCARCH),x86)
98LLD := lld
99else
100LLD := ld
101endif
102
103DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool
104
105TEST_GEN_PROGS_EXTENDED += $(DEFAULT_BPFTOOL)
106
107$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ)
108
109BPFTOOL ?= $(DEFAULT_BPFTOOL)
110$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile)    \
111		    $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool
112	$(Q)$(MAKE) $(submake_extras)  -C $(BPFTOOLDIR)			       \
113		    ARCH= CROSS_COMPILE= CC=$(HOSTCC) LD=$(HOSTLD) 	       \
114		    EXTRA_CFLAGS='-g -O0'				       \
115		    OUTPUT=$(HOST_BUILD_DIR)/bpftool/			       \
116		    LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/		       \
117		    LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/			       \
118		    prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin
119
120$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile)		       \
121	   | $(BUILD_DIR)/libbpf
122	$(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
123		    EXTRA_CFLAGS='-g -O0'				       \
124		    DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
125
126ifneq ($(BPFOBJ),$(HOST_BPFOBJ))
127$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile)		       \
128		| $(HOST_BUILD_DIR)/libbpf
129	$(Q)$(MAKE) $(submake_extras) -C $(BPFDIR)                             \
130		    EXTRA_CFLAGS='-g -O0' ARCH= CROSS_COMPILE=		       \
131		    OUTPUT=$(HOST_BUILD_DIR)/libbpf/ CC=$(HOSTCC) LD=$(HOSTLD) \
132		    DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers
133endif
134
135$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR)
136ifeq ($(VMLINUX_H),)
137	$(call msg,GEN,,$@)
138	$(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@
139else
140	$(call msg,CP,,$@)
141	$(Q)cp "$(VMLINUX_H)" $@
142endif
143
144$(KHDR_INCLUDES)/linux/hid.h: $(top_srcdir)/include/uapi/linux/hid.h
145	$(MAKE) -C $(top_srcdir) INSTALL_HDR_PATH=$(SCRATCH_DIR)/uapi headers_install
146
147$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids	\
148		       $(TOOLSDIR)/bpf/resolve_btfids/main.c	\
149		       $(TOOLSDIR)/lib/rbtree.c			\
150		       $(TOOLSDIR)/lib/zalloc.c			\
151		       $(TOOLSDIR)/lib/string.c			\
152		       $(TOOLSDIR)/lib/ctype.c			\
153		       $(TOOLSDIR)/lib/str_error_r.c
154	$(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids	\
155		CC=$(HOSTCC) LD=$(HOSTLD) AR=$(HOSTAR) \
156		LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \
157		OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ)
158
159# Get Clang's default includes on this system, as opposed to those seen by
160# '-target bpf'. This fixes "missing" files on some architectures/distros,
161# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
162#
163# Use '-idirafter': Don't interfere with include mechanics except where the
164# build would have failed anyways.
165define get_sys_includes
166$(shell $(1) -v -E - </dev/null 2>&1 \
167	| sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \
168$(shell $(1) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}')
169endef
170
171# Determine target endianness.
172IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
173			grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
174MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
175
176CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
177BPF_CFLAGS = -g -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) 		\
178	     -I$(INCLUDE_DIR)
179
180CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
181	       -Wno-compare-distinct-pointer-types
182
183# Build BPF object using Clang
184# $1 - input .c file
185# $2 - output .o file
186# $3 - CFLAGS
187define CLANG_BPF_BUILD_RULE
188	$(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
189	$(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v3 -o $2
190endef
191# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
192define CLANG_NOALU32_BPF_BUILD_RULE
193	$(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
194	$(Q)$(CLANG) $3 -O2 -target bpf -c $1 -mcpu=v2 -o $2
195endef
196# Build BPF object using GCC
197define GCC_BPF_BUILD_RULE
198	$(call msg,GCC-BPF,$(TRUNNER_BINARY),$2)
199	$(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2
200endef
201
202BPF_PROGS_DIR := progs
203BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
204BPF_SRCS := $(notdir $(wildcard $(BPF_PROGS_DIR)/*.c))
205BPF_OBJS := $(patsubst %.c,$(OUTPUT)/%.bpf.o, $(BPF_SRCS))
206BPF_SKELS := $(patsubst %.c,$(OUTPUT)/%.skel.h, $(BPF_SRCS))
207TEST_GEN_FILES += $(BPF_OBJS)
208
209$(BPF_PROGS_DIR)-bpfobjs := y
210$(BPF_OBJS): $(OUTPUT)/%.bpf.o:				\
211	     $(BPF_PROGS_DIR)/%.c			\
212	     $(wildcard $(BPF_PROGS_DIR)/*.h)		\
213	     $(INCLUDE_DIR)/vmlinux.h				\
214	     $(wildcard $(BPFDIR)/hid_bpf_*.h)			\
215	     $(wildcard $(BPFDIR)/*.bpf.h)			\
216	     | $(OUTPUT) $(BPFOBJ)
217	$(call $(BPF_BUILD_RULE),$<,$@, $(BPF_CFLAGS))
218
219$(BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(OUTPUT)
220	$(call msg,GEN-SKEL,$(BINARY),$@)
221	$(Q)$(BPFTOOL) gen object $(<:.o=.linked1.o) $<
222	$(Q)$(BPFTOOL) gen skeleton $(<:.o=.linked1.o) name $(notdir $(<:.bpf.o=)) > $@
223
224$(OUTPUT)/%.o: %.c $(BPF_SKELS) $(KHDR_INCLUDES)/linux/hid.h
225	$(call msg,CC,,$@)
226	$(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
227
228$(OUTPUT)/%: $(OUTPUT)/%.o
229	$(call msg,BINARY,,$@)
230	$(Q)$(LINK.c) $^ $(LDLIBS) -o $@
231
232EXTRA_CLEAN := $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) feature bpftool	\
233	$(addprefix $(OUTPUT)/,*.o *.skel.h no_alu32)
234