tools/testing/selftests/lib.mk

   1 # This mimics the top-level Makefile. We do it explicitly here so that this
   2 # Makefile can operate with or without the kbuild infrastructure.
   3 ifneq ($(LLVM),)
   4 ifneq ($(filter %/,$(LLVM)),)
   5 LLVM_PREFIX := $(LLVM)
   6 else ifneq ($(filter -%,$(LLVM)),)
   7 LLVM_SUFFIX := $(LLVM)
   8 endif
   9
  10 CLANG_TARGET_FLAGS_arm          := arm-linux-gnueabi
  11 CLANG_TARGET_FLAGS_arm64        := aarch64-linux-gnu
  12 CLANG_TARGET_FLAGS_hexagon      := hexagon-linux-musl
  13 CLANG_TARGET_FLAGS_i386         := i386-linux-gnu
  14 CLANG_TARGET_FLAGS_m68k         := m68k-linux-gnu
  15 CLANG_TARGET_FLAGS_mips         := mipsel-linux-gnu
  16 CLANG_TARGET_FLAGS_powerpc      := powerpc64le-linux-gnu
  17 CLANG_TARGET_FLAGS_riscv        := riscv64-linux-gnu
  18 CLANG_TARGET_FLAGS_s390         := s390x-linux-gnu
  19 CLANG_TARGET_FLAGS_x86          := x86_64-linux-gnu
  20 CLANG_TARGET_FLAGS_x86_64       := x86_64-linux-gnu
  21 CLANG_TARGET_FLAGS              := $(CLANG_TARGET_FLAGS_$(ARCH))
  22
  23 ifeq ($(CROSS_COMPILE),)
  24 ifeq ($(CLANG_TARGET_FLAGS),)
  25 $(error Specify CROSS_COMPILE or add '--target=' option to lib.mk)
  26 else
  27 CLANG_FLAGS     += --target=$(CLANG_TARGET_FLAGS)
  28 endif # CLANG_TARGET_FLAGS
  29 else
  30 CLANG_FLAGS     += --target=$(notdir $(CROSS_COMPILE:%-=%))
  31 endif # CROSS_COMPILE
  32
  33 CC := $(LLVM_PREFIX)clang$(LLVM_SUFFIX) $(CLANG_FLAGS) -fintegrated-as
  34 else
  35 CC := $(CROSS_COMPILE)gcc
  36 endif # LLVM
  37
  38 ifeq (0,$(MAKELEVEL))
  39     ifeq ($(OUTPUT),)
  40         OUTPUT := $(shell pwd)
  41         DEFAULT_INSTALL_HDR_PATH := 1
  42     endif
  43 endif
  44 selfdir = $(realpath $(dir $(filter %/lib.mk,$(MAKEFILE_LIST))))
  45 top_srcdir = $(selfdir)/../../..
  46
  47 ifeq ("$(origin O)", "command line")
  48   KBUILD_OUTPUT := $(O)
  49 endif
  50
  51 ifneq ($(KBUILD_OUTPUT),)
  52   # Make's built-in functions such as $(abspath ...), $(realpath ...) cannot
  53   # expand a shell special character '~'. We use a somewhat tedious way here.
  54   abs_objtree := $(shell cd $(top_srcdir) && mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && pwd)
  55   $(if $(abs_objtree),, \
  56     $(error failed to create output directory "$(KBUILD_OUTPUT)"))
  57   # $(realpath ...) resolves symlinks
  58   abs_objtree := $(realpath $(abs_objtree))
  59   KHDR_DIR := ${abs_objtree}/usr/include
  60 else
  61   abs_srctree := $(shell cd $(top_srcdir) && pwd)
  62   KHDR_DIR := ${abs_srctree}/usr/include
  63 endif
  64
  65 KHDR_INCLUDES := -isystem $(KHDR_DIR)
  66
  67 # The following are built by lib.mk common compile rules.
  68 # TEST_CUSTOM_PROGS should be used by tests that require
  69 # custom build rule and prevent common build rule use.
  70 # TEST_PROGS are for test shell scripts.
  71 # TEST_CUSTOM_PROGS and TEST_PROGS will be run by common run_tests
  72 # and install targets. Common clean doesn't touch them.
  73 TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS))
  74 TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED))
  75 TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES))
  76
  77 all: kernel_header_files $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) \
  78      $(TEST_GEN_FILES)
  79
  80 kernel_header_files:
  81         @ls $(KHDR_DIR)/linux/*.h >/dev/null 2>/dev/null;                      \
  82         if [ $$? -ne 0 ]; then                                                 \
  83             RED='\033[1;31m';                                                  \
  84             NOCOLOR='\033[0m';                                                 \
  85             echo;                                                              \
  86             echo -e "$${RED}error$${NOCOLOR}: missing kernel header files.";   \
  87             echo "Please run this and try again:";                             \
  88             echo;                                                              \
  89             echo "    cd $(top_srcdir)";                                       \
  90             echo "    make headers";                                           \
  91             echo;                                                              \
  92             exit 1; \
  93         fi
  94
  95 .PHONY: kernel_header_files
  96
  97 define RUN_TESTS
  98         BASE_DIR="$(selfdir)";                  \
  99         . $(selfdir)/kselftest/runner.sh;       \
 100         if [ "X$(summary)" != "X" ]; then       \
 101                 per_test_logging=1;             \
 102         fi;                                     \
 103         run_many $(1)
 104 endef
 105
 106 run_tests: all
 107 ifdef building_out_of_srctree
 108         @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)" != "X" ]; then \
 109                 rsync -aLq $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(OUTPUT); \
 110         fi
 111         @if [ "X$(TEST_PROGS)" != "X" ]; then \
 112                 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) \
 113                                   $(addprefix $(OUTPUT)/,$(TEST_PROGS))) ; \
 114         else \
 115                 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS)); \
 116         fi
 117 else
 118         @$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS))
 119 endif
 120
 121 define INSTALL_SINGLE_RULE
 122         $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH))
 123         $(if $(INSTALL_LIST),rsync -aL $(INSTALL_LIST) $(INSTALL_PATH)/)
 124 endef
 125
 126 define INSTALL_RULE
 127         $(eval INSTALL_LIST = $(TEST_PROGS)) $(INSTALL_SINGLE_RULE)
 128         $(eval INSTALL_LIST = $(TEST_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE)
 129         $(eval INSTALL_LIST = $(TEST_FILES)) $(INSTALL_SINGLE_RULE)
 130         $(eval INSTALL_LIST = $(TEST_GEN_PROGS)) $(INSTALL_SINGLE_RULE)
 131         $(eval INSTALL_LIST = $(TEST_CUSTOM_PROGS)) $(INSTALL_SINGLE_RULE)
 132         $(eval INSTALL_LIST = $(TEST_GEN_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE)
 133         $(eval INSTALL_LIST = $(TEST_GEN_FILES)) $(INSTALL_SINGLE_RULE)
 134         $(eval INSTALL_LIST = $(wildcard config settings)) $(INSTALL_SINGLE_RULE)
 135 endef
 136
 137 install: all
 138 ifdef INSTALL_PATH
 139         $(INSTALL_RULE)
 140 else
 141         $(error Error: set INSTALL_PATH to use install)
 142 endif
 143
 144 emit_tests:
 145         for TEST in $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS); do \
 146                 BASENAME_TEST=`basename $$TEST`;        \
 147                 echo "$(COLLECTION):$$BASENAME_TEST";   \
 148         done
 149
 150 # define if isn't already. It is undefined in make O= case.
 151 ifeq ($(RM),)
 152 RM := rm -f
 153 endif
 154
 155 define CLEAN
 156         $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN)
 157 endef
 158
 159 clean:
 160         $(CLEAN)
 161
 162 # Enables to extend CFLAGS and LDFLAGS from command line, e.g.
 163 # make USERCFLAGS=-Werror USERLDFLAGS=-static
 164 CFLAGS += $(USERCFLAGS)
 165 LDFLAGS += $(USERLDFLAGS)
 166
 167 # When make O= with kselftest target from main level
 168 # the following aren't defined.
 169 #
 170 ifdef building_out_of_srctree
 171 LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
 172 COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
 173 LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
 174 endif
 175
 176 # Selftest makefiles can override those targets by setting
 177 # OVERRIDE_TARGETS = 1.
 178 ifeq ($(OVERRIDE_TARGETS),)
 179 LOCAL_HDRS += $(selfdir)/kselftest_harness.h $(selfdir)/kselftest.h
 180 $(OUTPUT)/%:%.c $(LOCAL_HDRS)
 181         $(LINK.c) $(filter-out $(LOCAL_HDRS),$^) $(LDLIBS) -o $@
 182
 183 $(OUTPUT)/%.o:%.S
 184         $(COMPILE.S) $^ -o $@
 185
 186 $(OUTPUT)/%:%.S
 187         $(LINK.S) $^ $(LDLIBS) -o $@
 188 endif
 189
 190 .PHONY: run_tests all clean install emit_tests