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 CC := clang
5 LLVM_PREFIX := $(LLVM) <<
6 else ifneq ($(filter -%,$(LLVM)),) <<
7 LLVM_SUFFIX := $(LLVM) <<
8 endif <<
9 <<
10 CLANG := $(LLVM_PREFIX)clang$(LLVM_SUFFIX) <<
11 <<
12 CLANG_TARGET_FLAGS_arm := arm-linux-g <<
13 CLANG_TARGET_FLAGS_arm64 := aarch64-lin <<
14 CLANG_TARGET_FLAGS_hexagon := hexagon-lin <<
15 CLANG_TARGET_FLAGS_i386 := i386-linux- <<
16 CLANG_TARGET_FLAGS_m68k := m68k-linux- <<
17 CLANG_TARGET_FLAGS_mips := mipsel-linu <<
18 CLANG_TARGET_FLAGS_powerpc := powerpc64le <<
19 CLANG_TARGET_FLAGS_riscv := riscv64-lin <<
20 CLANG_TARGET_FLAGS_s390 := s390x-linux <<
21 CLANG_TARGET_FLAGS_x86 := x86_64-linu <<
22 CLANG_TARGET_FLAGS_x86_64 := x86_64-linu <<
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 <<
31 ifeq ($(CROSS_COMPILE),) <<
32 ifeq ($(CLANG_TARGET_FLAGS),) <<
33 $(error Specify CROSS_COMPILE or add '--target <<
34 else <<
35 CLANG_FLAGS += --target=$(CLANG_TARGET_FLA <<
36 endif # CLANG_TARGET_FLAGS <<
37 else <<
38 CLANG_FLAGS += --target=$(notdir $(CROSS_C <<
39 endif # CROSS_COMPILE <<
40 <<
41 # gcc defaults to silence (off) for the follow <<
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 5 else
51 CC := $(CROSS_COMPILE)gcc 6 CC := $(CROSS_COMPILE)gcc
52 endif # LLVM !! 7 endif
53 8
54 ifeq (0,$(MAKELEVEL)) 9 ifeq (0,$(MAKELEVEL))
55 ifeq ($(OUTPUT),) 10 ifeq ($(OUTPUT),)
56 OUTPUT := $(shell pwd) 11 OUTPUT := $(shell pwd)
57 DEFAULT_INSTALL_HDR_PATH := 1 12 DEFAULT_INSTALL_HDR_PATH := 1
58 endif 13 endif
59 endif 14 endif
60 selfdir = $(realpath $(dir $(filter %/lib.mk,$ 15 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 16
90 # The following are built by lib.mk common com 17 # The following are built by lib.mk common compile rules.
91 # TEST_CUSTOM_PROGS should be used by tests th 18 # TEST_CUSTOM_PROGS should be used by tests that require
92 # custom build rule and prevent common build r 19 # custom build rule and prevent common build rule use.
93 # TEST_PROGS are for test shell scripts. 20 # TEST_PROGS are for test shell scripts.
94 # TEST_CUSTOM_PROGS and TEST_PROGS will be run 21 # TEST_CUSTOM_PROGS and TEST_PROGS will be run by common run_tests
95 # and install targets. Common clean doesn't to 22 # and install targets. Common clean doesn't touch them.
96 TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(T 23 TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS))
97 TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTP 24 TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED))
98 TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(T 25 TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES))
99 26
100 all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTEND !! 27 ifdef KSFT_KHDR_INSTALL
101 $(if $(TEST_GEN_MODS_DIR),gen_mods_dir !! 28 top_srcdir ?= ../../../..
>> 29 include $(top_srcdir)/scripts/subarch.include
>> 30 ARCH ?= $(SUBARCH)
>> 31
>> 32 # set default goal to all, so make without a target runs all, even when
>> 33 # all isn't the first target in the file.
>> 34 .DEFAULT_GOAL := all
>> 35
>> 36 # Invoke headers install with --no-builtin-rules to avoid circular
>> 37 # dependency in "make kselftest" case. In this case, second level
>> 38 # make inherits builtin-rules which will use the rule generate
>> 39 # Makefile.o and runs into
>> 40 # "Circular Makefile.o <- prepare dependency dropped."
>> 41 # and headers_install fails and test compile fails.
>> 42 # O= KBUILD_OUTPUT cases don't run into this error, since main Makefile
>> 43 # invokes them as sub-makes and --no-builtin-rules is not necessary,
>> 44 # but doesn't cause any failures. Keep it simple and use the same
>> 45 # flags in both cases.
>> 46 # Note that the support to install headers from lib.mk is necessary
>> 47 # when test Makefile is run directly with "make -C".
>> 48 # When local build is done, headers are installed in the default
>> 49 # INSTALL_HDR_PATH usr/include.
>> 50 .PHONY: khdr
>> 51 khdr:
>> 52 ifndef KSFT_KHDR_INSTALL_DONE
>> 53 ifeq (1,$(DEFAULT_INSTALL_HDR_PATH))
>> 54 $(MAKE) --no-builtin-rules ARCH=$(ARCH) -C $(top_srcdir) headers_install
>> 55 else
>> 56 $(MAKE) --no-builtin-rules INSTALL_HDR_PATH=$$OUTPUT/usr \
>> 57 ARCH=$(ARCH) -C $(top_srcdir) headers_install
>> 58 endif
>> 59 endif
>> 60
>> 61 all: khdr $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES)
>> 62 else
>> 63 all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES)
>> 64 endif
102 65
103 define RUN_TESTS 66 define RUN_TESTS
104 BASE_DIR="$(selfdir)"; 67 BASE_DIR="$(selfdir)"; \
105 . $(selfdir)/kselftest/runner.sh; 68 . $(selfdir)/kselftest/runner.sh; \
106 if [ "X$(summary)" != "X" ]; then 69 if [ "X$(summary)" != "X" ]; then \
107 per_test_logging=1; 70 per_test_logging=1; \
108 fi; 71 fi; \
109 run_many $(1) 72 run_many $(1)
110 endef 73 endef
111 74
112 define INSTALL_INCLUDES <<
113 $(if $(TEST_INCLUDES), \ <<
114 relative_files=""; \ <<
115 for entry in $(TEST_INCLUDES); <<
116 entry_dir=$$(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 75 run_tests: all
130 ifdef building_out_of_srctree 76 ifdef building_out_of_srctree
131 @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTE !! 77 @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)" != "X" ]; then \
132 rsync -aq --copy-unsafe-links !! 78 rsync -aq $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(OUTPUT); \
133 fi 79 fi
134 @$(INSTALL_INCLUDES) <<
135 @if [ "X$(TEST_PROGS)" != "X" ]; then 80 @if [ "X$(TEST_PROGS)" != "X" ]; then \
136 $(call RUN_TESTS, $(TEST_GEN_P 81 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) \
137 $(addprefix 82 $(addprefix $(OUTPUT)/,$(TEST_PROGS))) ; \
138 else \ 83 else \
139 $(call RUN_TESTS, $(TEST_GEN_P 84 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS)); \
140 fi 85 fi
141 else 86 else
142 @$(call RUN_TESTS, $(TEST_GEN_PROGS) $ 87 @$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS))
143 endif 88 endif
144 89
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 90 define INSTALL_SINGLE_RULE
152 $(if $(INSTALL_LIST),@mkdir -p $(INSTA 91 $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH))
153 $(if $(INSTALL_LIST),rsync -a --copy-u !! 92 $(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 93 endef
160 94
161 define INSTALL_RULE 95 define INSTALL_RULE
162 $(eval INSTALL_LIST = $(TEST_PROGS)) $ 96 $(eval INSTALL_LIST = $(TEST_PROGS)) $(INSTALL_SINGLE_RULE)
163 $(eval INSTALL_LIST = $(TEST_PROGS_EXT 97 $(eval INSTALL_LIST = $(TEST_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE)
164 $(eval INSTALL_LIST = $(TEST_FILES)) $ 98 $(eval INSTALL_LIST = $(TEST_FILES)) $(INSTALL_SINGLE_RULE)
165 $(eval INSTALL_LIST = $(TEST_GEN_PROGS 99 $(eval INSTALL_LIST = $(TEST_GEN_PROGS)) $(INSTALL_SINGLE_RULE)
166 $(eval INSTALL_LIST = $(TEST_CUSTOM_PR 100 $(eval INSTALL_LIST = $(TEST_CUSTOM_PROGS)) $(INSTALL_SINGLE_RULE)
167 $(eval INSTALL_LIST = $(TEST_GEN_PROGS 101 $(eval INSTALL_LIST = $(TEST_GEN_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE)
168 $(eval INSTALL_LIST = $(TEST_GEN_FILES 102 $(eval INSTALL_LIST = $(TEST_GEN_FILES)) $(INSTALL_SINGLE_RULE)
169 $(eval INSTALL_LIST = $(notdir $(TEST_ <<
170 $(eval INSTALL_LIST = $(wildcard confi <<
171 endef 103 endef
172 104
173 install: all 105 install: all
174 ifdef INSTALL_PATH 106 ifdef INSTALL_PATH
175 $(INSTALL_RULE) 107 $(INSTALL_RULE)
176 $(INSTALL_INCLUDES) <<
177 else 108 else
178 $(error Error: set INSTALL_PATH to use 109 $(error Error: set INSTALL_PATH to use install)
179 endif 110 endif
180 111
181 emit_tests: 112 emit_tests:
182 for TEST in $(TEST_GEN_PROGS) $(TEST_C 113 for TEST in $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS); do \
183 BASENAME_TEST=`basename $$TEST 114 BASENAME_TEST=`basename $$TEST`; \
184 echo "$(COLLECTION):$$BASENAME 115 echo "$(COLLECTION):$$BASENAME_TEST"; \
185 done 116 done
186 117
187 # define if isn't already. It is undefined in 118 # define if isn't already. It is undefined in make O= case.
188 ifeq ($(RM),) 119 ifeq ($(RM),)
189 RM := rm -f 120 RM := rm -f
190 endif 121 endif
191 122
192 define CLEAN 123 define CLEAN
193 $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_ 124 $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN)
194 endef 125 endef
195 126
196 clean: $(if $(TEST_GEN_MODS_DIR),clean_mods_di !! 127 clean:
197 $(CLEAN) 128 $(CLEAN)
198 129
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 130 # When make O= with kselftest target from main level
208 # the following aren't defined. 131 # the following aren't defined.
209 # 132 #
210 ifdef building_out_of_srctree 133 ifdef building_out_of_srctree
211 LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS 134 LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
212 COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TAR 135 COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
213 LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAG 136 LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
214 endif 137 endif
215 138
216 # Selftest makefiles can override those target 139 # Selftest makefiles can override those targets by setting
217 # OVERRIDE_TARGETS = 1. 140 # OVERRIDE_TARGETS = 1.
218 ifeq ($(OVERRIDE_TARGETS),) 141 ifeq ($(OVERRIDE_TARGETS),)
219 LOCAL_HDRS += $(selfdir)/kselftest_harness.h $ !! 142 LOCAL_HDRS := $(selfdir)/kselftest_harness.h $(selfdir)/kselftest.h
220 $(OUTPUT)/%:%.c $(LOCAL_HDRS) 143 $(OUTPUT)/%:%.c $(LOCAL_HDRS)
221 $(call msg,CC,,$@) !! 144 $(LINK.c) $(filter-out $(LOCAL_HDRS),$^) $(LDLIBS) -o $@
222 $(Q)$(LINK.c) $(filter-out $(LOCAL_HDR <<
223 145
224 $(OUTPUT)/%.o:%.S 146 $(OUTPUT)/%.o:%.S
225 $(COMPILE.S) $^ -o $@ 147 $(COMPILE.S) $^ -o $@
226 148
227 $(OUTPUT)/%:%.S 149 $(OUTPUT)/%:%.S
228 $(LINK.S) $^ $(LDLIBS) -o $@ 150 $(LINK.S) $^ $(LDLIBS) -o $@
229 endif 151 endif
230 152
231 .PHONY: run_tests all clean install emit_tests !! 153 .PHONY: run_tests all clean install emit_tests
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