# This mimics the top-level Makefile. We do it explicitly here so that this# Makefile can operate with or without the kbuild infrastructure.ifneq ($(LLVM),)ifneq ($(filter %/,$(LLVM)),)LLVM_PREFIX := $(LLVM)else ifneq ($(filter -%,$(LLVM)),)LLVM_SUFFIX := $(LLVM)endif CLANG_TARGET_FLAGS_arm          := arm-linux-gnueabiCLANG_TARGET_FLAGS_arm64        := aarch64-linux-gnuCLANG_TARGET_FLAGS_hexagon      := hexagon-linux-muslCLANG_TARGET_FLAGS_m68k         := m68k-linux-gnuCLANG_TARGET_FLAGS_mips         := mipsel-linux-gnuCLANG_TARGET_FLAGS_powerpc      := powerpc64le-linux-gnuCLANG_TARGET_FLAGS_riscv        := riscv64-linux-gnuCLANG_TARGET_FLAGS_s390         := s390x-linux-gnuCLANG_TARGET_FLAGS_x86          := x86_64-linux-gnuCLANG_TARGET_FLAGS              := $(CLANG_TARGET_FLAGS_$(ARCH)) ifeq ($(CROSS_COMPILE),)ifeq ($(CLANG_TARGET_FLAGS),)$(error Specify CROSS_COMPILE or add '--target=' option to lib.mk)elseCLANG_FLAGS     += --target=$(CLANG_TARGET_FLAGS)endif # CLANG_TARGET_FLAGSelseCLANG_FLAGS     += --target=$(notdir $(CROSS_COMPILE:%-=%))endif # CROSS_COMPILE CC := $(LLVM_PREFIX)clang$(LLVM_SUFFIX) $(CLANG_FLAGS) -fintegrated-aselseCC := $(CROSS_COMPILE)gccendif # LLVM ifeq (0,$(MAKELEVEL))    ifeq ($(OUTPUT),)	OUTPUT := $(shell pwd)	DEFAULT_INSTALL_HDR_PATH := 1    endifendifselfdir = $(realpath $(dir $(filter %/lib.mk,$(MAKEFILE_LIST))))top_srcdir = $(selfdir)/../../.. ifeq ($(KHDR_INCLUDES),)KHDR_INCLUDES := -isystem $(top_srcdir)/usr/includeendif # The following are built by lib.mk common compile rules.# TEST_CUSTOM_PROGS should be used by tests that require# custom build rule and prevent common build rule use.# TEST_PROGS are for test shell scripts.# TEST_CUSTOM_PROGS and TEST_PROGS will be run by common run_tests# and install targets. Common clean doesn't touch them.TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS))TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED))TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES)) all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) define RUN_TESTS	BASE_DIR="$(selfdir)";			\	. $(selfdir)/kselftest/runner.sh;	\	if [ "X$(summary)" != "X" ]; then       \		per_test_logging=1;		\	fi;                                     \	run_many $(1)endef run_tests: allifdef building_out_of_srctree	@if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)" != "X" ]; then \		rsync -aLq $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(OUTPUT); \	fi	@if [ "X$(TEST_PROGS)" != "X" ]; then \		$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) \				  $(addprefix $(OUTPUT)/,$(TEST_PROGS))) ; \	else \		$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS)); \	fielse	@$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS))endif define INSTALL_SINGLE_RULE	$(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH))	$(if $(INSTALL_LIST),rsync -aL $(INSTALL_LIST) $(INSTALL_PATH)/)endef define INSTALL_RULE	$(eval INSTALL_LIST = $(TEST_PROGS)) $(INSTALL_SINGLE_RULE)	$(eval INSTALL_LIST = $(TEST_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE)	$(eval INSTALL_LIST = $(TEST_FILES)) $(INSTALL_SINGLE_RULE)	$(eval INSTALL_LIST = $(TEST_GEN_PROGS)) $(INSTALL_SINGLE_RULE)	$(eval INSTALL_LIST = $(TEST_CUSTOM_PROGS)) $(INSTALL_SINGLE_RULE)	$(eval INSTALL_LIST = $(TEST_GEN_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE)	$(eval INSTALL_LIST = $(TEST_GEN_FILES)) $(INSTALL_SINGLE_RULE)	$(eval INSTALL_LIST = $(wildcard config settings)) $(INSTALL_SINGLE_RULE)endef install: allifdef INSTALL_PATH	$(INSTALL_RULE)else	$(error Error: set INSTALL_PATH to use install)endif emit_tests:	for TEST in $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS); do \		BASENAME_TEST=`basename $$TEST`;	\		echo "$(COLLECTION):$$BASENAME_TEST";	\	done # define if isn't already. It is undefined in make O= case.ifeq ($(RM),)RM := rm -fendif define CLEAN	$(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN)endef clean:	$(CLEAN) # Enables to extend CFLAGS and LDFLAGS from command line, e.g.# make USERCFLAGS=-Werror USERLDFLAGS=-staticCFLAGS += $(USERCFLAGS)LDFLAGS += $(USERLDFLAGS) # When make O= with kselftest target from main level# the following aren't defined.#ifdef building_out_of_srctreeLINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -cLINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)endif # Selftest makefiles can override those targets by setting# OVERRIDE_TARGETS = 1.ifeq ($(OVERRIDE_TARGETS),)LOCAL_HDRS += $(selfdir)/kselftest_harness.h $(selfdir)/kselftest.h$(OUTPUT)/%:%.c $(LOCAL_HDRS)	$(LINK.c) $(filter-out $(LOCAL_HDRS),$^) $(LDLIBS) -o $@ $(OUTPUT)/%.o:%.S	$(COMPILE.S) $^ -o $@ $(OUTPUT)/%:%.S	$(LINK.S) $^ $(LDLIBS) -o $@endif .PHONY: run_tests all clean install emit_tests