1 # This mimics the top-level Makefile. We do it 1 # This mimics the top-level Makefile. We do it explicitly here so that this
2 # Makefile can operate with or without the kbu 2 # Makefile can operate with or without the kbuild infrastructure.
3 ifneq ($(LLVM),) 3 ifneq ($(LLVM),)
4 ifneq ($(filter %/,$(LLVM)),) 4 ifneq ($(filter %/,$(LLVM)),)
5 LLVM_PREFIX := $(LLVM) 5 LLVM_PREFIX := $(LLVM)
6 else ifneq ($(filter -%,$(LLVM)),) 6 else ifneq ($(filter -%,$(LLVM)),)
7 LLVM_SUFFIX := $(LLVM) 7 LLVM_SUFFIX := $(LLVM)
8 endif 8 endif
9 9
10 CLANG := $(LLVM_PREFIX)clang$(LLVM_SUFFIX) <<
11 <<
12 CLANG_TARGET_FLAGS_arm := arm-linux-g 10 CLANG_TARGET_FLAGS_arm := arm-linux-gnueabi
13 CLANG_TARGET_FLAGS_arm64 := aarch64-lin 11 CLANG_TARGET_FLAGS_arm64 := aarch64-linux-gnu
14 CLANG_TARGET_FLAGS_hexagon := hexagon-lin 12 CLANG_TARGET_FLAGS_hexagon := hexagon-linux-musl
15 CLANG_TARGET_FLAGS_i386 := i386-linux- <<
16 CLANG_TARGET_FLAGS_m68k := m68k-linux- 13 CLANG_TARGET_FLAGS_m68k := m68k-linux-gnu
17 CLANG_TARGET_FLAGS_mips := mipsel-linu 14 CLANG_TARGET_FLAGS_mips := mipsel-linux-gnu
18 CLANG_TARGET_FLAGS_powerpc := powerpc64le 15 CLANG_TARGET_FLAGS_powerpc := powerpc64le-linux-gnu
19 CLANG_TARGET_FLAGS_riscv := riscv64-lin 16 CLANG_TARGET_FLAGS_riscv := riscv64-linux-gnu
20 CLANG_TARGET_FLAGS_s390 := s390x-linux 17 CLANG_TARGET_FLAGS_s390 := s390x-linux-gnu
21 CLANG_TARGET_FLAGS_x86 := x86_64-linu 18 CLANG_TARGET_FLAGS_x86 := x86_64-linux-gnu
22 CLANG_TARGET_FLAGS_x86_64 := x86_64-linu !! 19 CLANG_TARGET_FLAGS := $(CLANG_TARGET_FLAGS_$(ARCH))
23 <<
24 # Default to host architecture if ARCH is not <<
25 ifeq ($(ARCH),) <<
26 CLANG_TARGET_FLAGS := $(shell $(CLANG) -print- <<
27 else <<
28 CLANG_TARGET_FLAGS := $(CLANG_TARGET_FLAGS_$(A <<
29 endif <<
30 20
31 ifeq ($(CROSS_COMPILE),) 21 ifeq ($(CROSS_COMPILE),)
32 ifeq ($(CLANG_TARGET_FLAGS),) 22 ifeq ($(CLANG_TARGET_FLAGS),)
33 $(error Specify CROSS_COMPILE or add '--target !! 23 $(error Specify CROSS_COMPILE or add '--target=' option to lib.mk
34 else 24 else
35 CLANG_FLAGS += --target=$(CLANG_TARGET_FLA 25 CLANG_FLAGS += --target=$(CLANG_TARGET_FLAGS)
36 endif # CLANG_TARGET_FLAGS 26 endif # CLANG_TARGET_FLAGS
37 else 27 else
38 CLANG_FLAGS += --target=$(notdir $(CROSS_C 28 CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%))
39 endif # CROSS_COMPILE 29 endif # CROSS_COMPILE
40 30
41 # gcc defaults to silence (off) for the follow !! 31 CC := $(LLVM_PREFIX)clang$(LLVM_SUFFIX) $(CLANG_FLAGS) -fintegrated-as
42 # to the opposite. The warnings are not useful <<
43 # why they have remained disabled in gcc for t <<
44 # only due to including kernel data structures <<
45 # warnings from clang. Therefore, disable the <<
46 CFLAGS += -Wno-address-of-packed-member <<
47 CFLAGS += -Wno-gnu-variable-sized-type-not-at- <<
48 <<
49 CC := $(CLANG) $(CLANG_FLAGS) -fintegrated-as <<
50 else 32 else
51 CC := $(CROSS_COMPILE)gcc 33 CC := $(CROSS_COMPILE)gcc
52 endif # LLVM 34 endif # LLVM
53 35
54 ifeq (0,$(MAKELEVEL)) 36 ifeq (0,$(MAKELEVEL))
55 ifeq ($(OUTPUT),) 37 ifeq ($(OUTPUT),)
56 OUTPUT := $(shell pwd) 38 OUTPUT := $(shell pwd)
57 DEFAULT_INSTALL_HDR_PATH := 1 39 DEFAULT_INSTALL_HDR_PATH := 1
58 endif 40 endif
59 endif 41 endif
60 selfdir = $(realpath $(dir $(filter %/lib.mk,$ 42 selfdir = $(realpath $(dir $(filter %/lib.mk,$(MAKEFILE_LIST))))
61 top_srcdir = $(selfdir)/../../.. <<
62 <<
63 # msg: emit succinct information message descr <<
64 # $1 - generic step name (e.g., CC, LINK, etc) <<
65 # $2 - optional "flavor" specifier; if provide <<
66 # $3 - target (assumed to be file); only file <<
67 # $4 - optional extra arg, emitted as-is, if p <<
68 ifeq ($(V),1) <<
69 Q = <<
70 msg = <<
71 else <<
72 Q = @ <<
73 msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $ <<
74 MAKEFLAGS += --no-print-directory <<
75 endif <<
76 <<
77 ifeq ($(KHDR_INCLUDES),) <<
78 KHDR_INCLUDES := -isystem $(top_srcdir)/usr/in <<
79 endif <<
80 <<
81 # In order to use newer items that haven't yet <<
82 # header files, add $(TOOLS_INCLUDES) to the c <<
83 # each selftest. <<
84 # You may need to add files to that location, <<
85 # order to do that, run "make headers" from $( <<
86 # header file that you want from $(top_srcdir) <<
87 # subdir in $(TOOLS_INCLUDE). <<
88 TOOLS_INCLUDES := -isystem $(top_srcdir)/tools <<
89 43
90 # The following are built by lib.mk common com 44 # The following are built by lib.mk common compile rules.
91 # TEST_CUSTOM_PROGS should be used by tests th 45 # TEST_CUSTOM_PROGS should be used by tests that require
92 # custom build rule and prevent common build r 46 # custom build rule and prevent common build rule use.
93 # TEST_PROGS are for test shell scripts. 47 # TEST_PROGS are for test shell scripts.
94 # TEST_CUSTOM_PROGS and TEST_PROGS will be run 48 # TEST_CUSTOM_PROGS and TEST_PROGS will be run by common run_tests
95 # and install targets. Common clean doesn't to 49 # and install targets. Common clean doesn't touch them.
96 TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(T 50 TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS))
97 TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTP 51 TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED))
98 TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(T 52 TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES))
99 53
100 all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTEND !! 54 ifdef KSFT_KHDR_INSTALL
101 $(if $(TEST_GEN_MODS_DIR),gen_mods_dir !! 55 top_srcdir ?= ../../../..
>> 56 include $(top_srcdir)/scripts/subarch.include
>> 57 ARCH ?= $(SUBARCH)
>> 58
>> 59 # set default goal to all, so make without a target runs all, even when
>> 60 # all isn't the first target in the file.
>> 61 .DEFAULT_GOAL := all
>> 62
>> 63 # Invoke headers install with --no-builtin-rules to avoid circular
>> 64 # dependency in "make kselftest" case. In this case, second level
>> 65 # make inherits builtin-rules which will use the rule generate
>> 66 # Makefile.o and runs into
>> 67 # "Circular Makefile.o <- prepare dependency dropped."
>> 68 # and headers_install fails and test compile fails.
>> 69 # O= KBUILD_OUTPUT cases don't run into this error, since main Makefile
>> 70 # invokes them as sub-makes and --no-builtin-rules is not necessary,
>> 71 # but doesn't cause any failures. Keep it simple and use the same
>> 72 # flags in both cases.
>> 73 # Note that the support to install headers from lib.mk is necessary
>> 74 # when test Makefile is run directly with "make -C".
>> 75 # When local build is done, headers are installed in the default
>> 76 # INSTALL_HDR_PATH usr/include.
>> 77 .PHONY: khdr
>> 78 .NOTPARALLEL:
>> 79 khdr:
>> 80 ifndef KSFT_KHDR_INSTALL_DONE
>> 81 ifeq (1,$(DEFAULT_INSTALL_HDR_PATH))
>> 82 $(MAKE) --no-builtin-rules ARCH=$(ARCH) -C $(top_srcdir) headers_install
>> 83 else
>> 84 $(MAKE) --no-builtin-rules INSTALL_HDR_PATH=$$OUTPUT/usr \
>> 85 ARCH=$(ARCH) -C $(top_srcdir) headers_install
>> 86 endif
>> 87 endif
>> 88
>> 89 all: khdr $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES)
>> 90 else
>> 91 all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES)
>> 92 endif
102 93
103 define RUN_TESTS 94 define RUN_TESTS
104 BASE_DIR="$(selfdir)"; 95 BASE_DIR="$(selfdir)"; \
105 . $(selfdir)/kselftest/runner.sh; 96 . $(selfdir)/kselftest/runner.sh; \
106 if [ "X$(summary)" != "X" ]; then 97 if [ "X$(summary)" != "X" ]; then \
107 per_test_logging=1; 98 per_test_logging=1; \
108 fi; 99 fi; \
109 run_many $(1) 100 run_many $(1)
110 endef 101 endef
111 102
112 define INSTALL_INCLUDES <<
113 $(if $(TEST_INCLUDES), \ <<
114 relative_files=""; \ <<
115 for entry in $(TEST_INCLUDES); <<
116 entry_dir=$$(readlink <<
117 entry_name=$$(basename <<
118 relative_dir=$${entry_ <<
119 if [ "$$relative_dir" <<
120 echo "Error: T <<
121 exit 1; \ <<
122 fi; \ <<
123 relative_files="$$rela <<
124 done; \ <<
125 cd $(SRC_PATH) && rsync -aR $$ <<
126 ) <<
127 endef <<
128 <<
129 run_tests: all 103 run_tests: all
130 ifdef building_out_of_srctree 104 ifdef building_out_of_srctree
131 @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTE !! 105 @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)" != "X" ]; then \
132 rsync -aq --copy-unsafe-links !! 106 rsync -aq $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(OUTPUT); \
133 fi 107 fi
134 @$(INSTALL_INCLUDES) <<
135 @if [ "X$(TEST_PROGS)" != "X" ]; then 108 @if [ "X$(TEST_PROGS)" != "X" ]; then \
136 $(call RUN_TESTS, $(TEST_GEN_P 109 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) \
137 $(addprefix 110 $(addprefix $(OUTPUT)/,$(TEST_PROGS))) ; \
138 else \ 111 else \
139 $(call RUN_TESTS, $(TEST_GEN_P 112 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS)); \
140 fi 113 fi
141 else 114 else
142 @$(call RUN_TESTS, $(TEST_GEN_PROGS) $ 115 @$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS))
143 endif 116 endif
144 117
145 gen_mods_dir: <<
146 $(Q)$(MAKE) -C $(TEST_GEN_MODS_DIR) <<
147 <<
148 clean_mods_dir: <<
149 $(Q)$(MAKE) -C $(TEST_GEN_MODS_DIR) cl <<
150 <<
151 define INSTALL_SINGLE_RULE 118 define INSTALL_SINGLE_RULE
152 $(if $(INSTALL_LIST),@mkdir -p $(INSTA 119 $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH))
153 $(if $(INSTALL_LIST),rsync -a --copy-u !! 120 $(if $(INSTALL_LIST),rsync -a $(INSTALL_LIST) $(INSTALL_PATH)/)
154 endef <<
155 <<
156 define INSTALL_MODS_RULE <<
157 $(if $(INSTALL_LIST),@mkdir -p $(INSTA <<
158 $(if $(INSTALL_LIST),rsync -a --copy-u <<
159 endef 121 endef
160 122
161 define INSTALL_RULE 123 define INSTALL_RULE
162 $(eval INSTALL_LIST = $(TEST_PROGS)) $ 124 $(eval INSTALL_LIST = $(TEST_PROGS)) $(INSTALL_SINGLE_RULE)
163 $(eval INSTALL_LIST = $(TEST_PROGS_EXT 125 $(eval INSTALL_LIST = $(TEST_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE)
164 $(eval INSTALL_LIST = $(TEST_FILES)) $ 126 $(eval INSTALL_LIST = $(TEST_FILES)) $(INSTALL_SINGLE_RULE)
165 $(eval INSTALL_LIST = $(TEST_GEN_PROGS 127 $(eval INSTALL_LIST = $(TEST_GEN_PROGS)) $(INSTALL_SINGLE_RULE)
166 $(eval INSTALL_LIST = $(TEST_CUSTOM_PR 128 $(eval INSTALL_LIST = $(TEST_CUSTOM_PROGS)) $(INSTALL_SINGLE_RULE)
167 $(eval INSTALL_LIST = $(TEST_GEN_PROGS 129 $(eval INSTALL_LIST = $(TEST_GEN_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE)
168 $(eval INSTALL_LIST = $(TEST_GEN_FILES 130 $(eval INSTALL_LIST = $(TEST_GEN_FILES)) $(INSTALL_SINGLE_RULE)
169 $(eval INSTALL_LIST = $(notdir $(TEST_ <<
170 $(eval INSTALL_LIST = $(wildcard confi 131 $(eval INSTALL_LIST = $(wildcard config settings)) $(INSTALL_SINGLE_RULE)
171 endef 132 endef
172 133
173 install: all 134 install: all
174 ifdef INSTALL_PATH 135 ifdef INSTALL_PATH
175 $(INSTALL_RULE) 136 $(INSTALL_RULE)
176 $(INSTALL_INCLUDES) <<
177 else 137 else
178 $(error Error: set INSTALL_PATH to use 138 $(error Error: set INSTALL_PATH to use install)
179 endif 139 endif
180 140
181 emit_tests: 141 emit_tests:
182 for TEST in $(TEST_GEN_PROGS) $(TEST_C 142 for TEST in $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS); do \
183 BASENAME_TEST=`basename $$TEST 143 BASENAME_TEST=`basename $$TEST`; \
184 echo "$(COLLECTION):$$BASENAME 144 echo "$(COLLECTION):$$BASENAME_TEST"; \
185 done 145 done
186 146
187 # define if isn't already. It is undefined in 147 # define if isn't already. It is undefined in make O= case.
188 ifeq ($(RM),) 148 ifeq ($(RM),)
189 RM := rm -f 149 RM := rm -f
190 endif 150 endif
191 151
192 define CLEAN 152 define CLEAN
193 $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_ 153 $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN)
194 endef 154 endef
195 155
196 clean: $(if $(TEST_GEN_MODS_DIR),clean_mods_di !! 156 clean:
197 $(CLEAN) 157 $(CLEAN)
198 158
199 # Build with _GNU_SOURCE by default <<
200 CFLAGS += -D_GNU_SOURCE= <<
201 <<
202 # Enables to extend CFLAGS and LDFLAGS from co <<
203 # make USERCFLAGS=-Werror USERLDFLAGS=-static <<
204 CFLAGS += $(USERCFLAGS) <<
205 LDFLAGS += $(USERLDFLAGS) <<
206 <<
207 # When make O= with kselftest target from main 159 # When make O= with kselftest target from main level
208 # the following aren't defined. 160 # the following aren't defined.
209 # 161 #
210 ifdef building_out_of_srctree 162 ifdef building_out_of_srctree
211 LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS 163 LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
212 COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TAR 164 COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
213 LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAG 165 LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
214 endif 166 endif
215 167
216 # Selftest makefiles can override those target 168 # Selftest makefiles can override those targets by setting
217 # OVERRIDE_TARGETS = 1. 169 # OVERRIDE_TARGETS = 1.
218 ifeq ($(OVERRIDE_TARGETS),) 170 ifeq ($(OVERRIDE_TARGETS),)
219 LOCAL_HDRS += $(selfdir)/kselftest_harness.h $ 171 LOCAL_HDRS += $(selfdir)/kselftest_harness.h $(selfdir)/kselftest.h
220 $(OUTPUT)/%:%.c $(LOCAL_HDRS) 172 $(OUTPUT)/%:%.c $(LOCAL_HDRS)
221 $(call msg,CC,,$@) !! 173 $(LINK.c) $(filter-out $(LOCAL_HDRS),$^) $(LDLIBS) -o $@
222 $(Q)$(LINK.c) $(filter-out $(LOCAL_HDR <<
223 174
224 $(OUTPUT)/%.o:%.S 175 $(OUTPUT)/%.o:%.S
225 $(COMPILE.S) $^ -o $@ 176 $(COMPILE.S) $^ -o $@
226 177
227 $(OUTPUT)/%:%.S 178 $(OUTPUT)/%:%.S
228 $(LINK.S) $^ $(LDLIBS) -o $@ 179 $(LINK.S) $^ $(LDLIBS) -o $@
229 endif 180 endif
230 181
231 .PHONY: run_tests all clean install emit_tests !! 182 .PHONY: run_tests all clean install emit_tests
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