232 lines · plain
1# This mimics the top-level Makefile. We do it explicitly here so that this2# Makefile can operate with or without the kbuild infrastructure.3ifneq ($(LLVM),)4ifneq ($(filter %/,$(LLVM)),)5LLVM_PREFIX := $(LLVM)6else ifneq ($(filter -%,$(LLVM)),)7LLVM_SUFFIX := $(LLVM)8endif9 10CLANG := $(LLVM_PREFIX)clang$(LLVM_SUFFIX)11 12CLANG_TARGET_FLAGS_arm := arm-linux-gnueabi13CLANG_TARGET_FLAGS_arm64 := aarch64-linux-gnu14CLANG_TARGET_FLAGS_hexagon := hexagon-linux-musl15CLANG_TARGET_FLAGS_i386 := i386-linux-gnu16CLANG_TARGET_FLAGS_m68k := m68k-linux-gnu17CLANG_TARGET_FLAGS_mips := mipsel-linux-gnu18CLANG_TARGET_FLAGS_powerpc := powerpc64le-linux-gnu19CLANG_TARGET_FLAGS_riscv := riscv64-linux-gnu20CLANG_TARGET_FLAGS_s390 := s390x-linux-gnu21CLANG_TARGET_FLAGS_x86 := x86_64-linux-gnu22CLANG_TARGET_FLAGS_x86_64 := x86_64-linux-gnu23 24# Default to host architecture if ARCH is not explicitly given.25ifeq ($(ARCH),)26CLANG_TARGET_FLAGS := $(shell $(CLANG) -print-target-triple)27else28CLANG_TARGET_FLAGS := $(CLANG_TARGET_FLAGS_$(ARCH))29endif30 31ifeq ($(CROSS_COMPILE),)32ifeq ($(CLANG_TARGET_FLAGS),)33$(error Specify CROSS_COMPILE or add '--target=' option to lib.mk)34else35CLANG_FLAGS += --target=$(CLANG_TARGET_FLAGS)36endif # CLANG_TARGET_FLAGS37else38CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%))39endif # CROSS_COMPILE40 41# gcc defaults to silence (off) for the following warnings, but clang defaults42# to the opposite. The warnings are not useful for the kernel itself, which is43# why they have remained disabled in gcc for the main kernel build. And it is44# only due to including kernel data structures in the selftests, that we get the45# warnings from clang. Therefore, disable the warnings for clang builds.46CFLAGS += -Wno-address-of-packed-member47CFLAGS += -Wno-gnu-variable-sized-type-not-at-end48 49CC := $(CLANG) $(CLANG_FLAGS) -fintegrated-as50else51CC := $(CROSS_COMPILE)gcc52endif # LLVM53 54ifeq (0,$(MAKELEVEL))55 ifeq ($(OUTPUT),)56 OUTPUT := $(shell pwd)57 DEFAULT_INSTALL_HDR_PATH := 158 endif59endif60selfdir = $(realpath $(dir $(filter %/lib.mk,$(MAKEFILE_LIST))))61top_srcdir = $(selfdir)/../../..62 63# msg: emit succinct information message describing current building step64# $1 - generic step name (e.g., CC, LINK, etc);65# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor];66# $3 - target (assumed to be file); only file name will be emitted;67# $4 - optional extra arg, emitted as-is, if provided.68ifeq ($(V),1)69Q =70msg =71else72Q = @73msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";74MAKEFLAGS += --no-print-directory75endif76 77ifeq ($(KHDR_INCLUDES),)78KHDR_INCLUDES := -isystem $(top_srcdir)/usr/include79endif80 81# In order to use newer items that haven't yet been added to the user's system82# header files, add $(TOOLS_INCLUDES) to the compiler invocation in each83# each selftest.84# You may need to add files to that location, or to refresh an existing file. In85# order to do that, run "make headers" from $(top_srcdir), then copy the86# header file that you want from $(top_srcdir)/usr/include/... , to the matching87# subdir in $(TOOLS_INCLUDE).88TOOLS_INCLUDES := -isystem $(top_srcdir)/tools/include/uapi89 90# The following are built by lib.mk common compile rules.91# TEST_CUSTOM_PROGS should be used by tests that require92# custom build rule and prevent common build rule use.93# TEST_PROGS are for test shell scripts.94# TEST_CUSTOM_PROGS and TEST_PROGS will be run by common run_tests95# and install targets. Common clean doesn't touch them.96TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS))97TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED))98TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES))99 100all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) \101 $(if $(TEST_GEN_MODS_DIR),gen_mods_dir)102 103define RUN_TESTS104 BASE_DIR="$(selfdir)"; \105 . $(selfdir)/kselftest/runner.sh; \106 if [ "X$(summary)" != "X" ]; then \107 per_test_logging=1; \108 fi; \109 run_many $(1)110endef111 112define INSTALL_INCLUDES113 $(if $(TEST_INCLUDES), \114 relative_files=""; \115 for entry in $(TEST_INCLUDES); do \116 entry_dir=$$(readlink -e "$$(dirname "$$entry")"); \117 entry_name=$$(basename "$$entry"); \118 relative_dir=$${entry_dir#"$$SRC_PATH"/}; \119 if [ "$$relative_dir" = "$$entry_dir" ]; then \120 echo "Error: TEST_INCLUDES entry \"$$entry\" not located inside selftests directory ($$SRC_PATH)" >&2; \121 exit 1; \122 fi; \123 relative_files="$$relative_files $$relative_dir/$$entry_name"; \124 done; \125 cd $(SRC_PATH) && rsync -aR $$relative_files $(OBJ_PATH)/ \126 )127endef128 129run_tests: all130ifdef building_out_of_srctree131 @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)$(TEST_GEN_MODS_DIR)" != "X" ]; then \132 rsync -aq --copy-unsafe-links $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(TEST_GEN_MODS_DIR) $(OUTPUT); \133 fi134 @$(INSTALL_INCLUDES)135 @if [ "X$(TEST_PROGS)" != "X" ]; then \136 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) \137 $(addprefix $(OUTPUT)/,$(TEST_PROGS))) ; \138 else \139 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS)); \140 fi141else142 @$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS))143endif144 145gen_mods_dir:146 $(Q)$(MAKE) -C $(TEST_GEN_MODS_DIR)147 148clean_mods_dir:149 $(Q)$(MAKE) -C $(TEST_GEN_MODS_DIR) clean150 151define INSTALL_SINGLE_RULE152 $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH))153 $(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST) $(INSTALL_PATH)/)154endef155 156define INSTALL_MODS_RULE157 $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH)/$(INSTALL_LIST))158 $(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST)/*.ko $(INSTALL_PATH)/$(INSTALL_LIST))159endef160 161define INSTALL_RULE162 $(eval INSTALL_LIST = $(TEST_PROGS)) $(INSTALL_SINGLE_RULE)163 $(eval INSTALL_LIST = $(TEST_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE)164 $(eval INSTALL_LIST = $(TEST_FILES)) $(INSTALL_SINGLE_RULE)165 $(eval INSTALL_LIST = $(TEST_GEN_PROGS)) $(INSTALL_SINGLE_RULE)166 $(eval INSTALL_LIST = $(TEST_CUSTOM_PROGS)) $(INSTALL_SINGLE_RULE)167 $(eval INSTALL_LIST = $(TEST_GEN_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE)168 $(eval INSTALL_LIST = $(TEST_GEN_FILES)) $(INSTALL_SINGLE_RULE)169 $(eval INSTALL_LIST = $(notdir $(TEST_GEN_MODS_DIR))) $(INSTALL_MODS_RULE)170 $(eval INSTALL_LIST = $(wildcard config settings)) $(INSTALL_SINGLE_RULE)171endef172 173install: all174ifdef INSTALL_PATH175 $(INSTALL_RULE)176 $(INSTALL_INCLUDES)177else178 $(error Error: set INSTALL_PATH to use install)179endif180 181emit_tests:182 for TEST in $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS); do \183 BASENAME_TEST=`basename $$TEST`; \184 echo "$(COLLECTION):$$BASENAME_TEST"; \185 done186 187# define if isn't already. It is undefined in make O= case.188ifeq ($(RM),)189RM := rm -f190endif191 192define CLEAN193 $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN)194endef195 196clean: $(if $(TEST_GEN_MODS_DIR),clean_mods_dir)197 $(CLEAN)198 199# Build with _GNU_SOURCE by default200CFLAGS += -D_GNU_SOURCE=201 202# Enables to extend CFLAGS and LDFLAGS from command line, e.g.203# make USERCFLAGS=-Werror USERLDFLAGS=-static204CFLAGS += $(USERCFLAGS)205LDFLAGS += $(USERLDFLAGS)206 207# When make O= with kselftest target from main level208# the following aren't defined.209#210ifdef building_out_of_srctree211LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)212COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c213LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)214endif215 216# Selftest makefiles can override those targets by setting217# OVERRIDE_TARGETS = 1.218ifeq ($(OVERRIDE_TARGETS),)219LOCAL_HDRS += $(selfdir)/kselftest_harness.h $(selfdir)/kselftest.h220$(OUTPUT)/%:%.c $(LOCAL_HDRS)221 $(call msg,CC,,$@)222 $(Q)$(LINK.c) $(filter-out $(LOCAL_HDRS),$^) $(LDLIBS) -o $@223 224$(OUTPUT)/%.o:%.S225 $(COMPILE.S) $^ -o $@226 227$(OUTPUT)/%:%.S228 $(LINK.S) $^ $(LDLIBS) -o $@229endif230 231.PHONY: run_tests all clean install emit_tests gen_mods_dir clean_mods_dir232