# 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 := $(LLVM_PREFIX)clang$(LLVM_SUFFIX) CLANG_TARGET_FLAGS_arm := arm-linux-gnueabiCLANG_TARGET_FLAGS_arm64 := aarch64-linux-gnuCLANG_TARGET_FLAGS_hexagon := hexagon-linux-muslCLANG_TARGET_FLAGS_i386 := i386-linux-gnuCLANG_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_x86_64 := x86_64-linux-gnu # Default to host architecture if ARCH is not explicitly given.ifeq ($(ARCH),)CLANG_TARGET_FLAGS := $(shell $(CLANG) -print-target-triple)elseCLANG_TARGET_FLAGS := $(CLANG_TARGET_FLAGS_$(ARCH))endif 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 # gcc defaults to silence (off) for the following warnings, but clang defaults# to the opposite. The warnings are not useful for the kernel itself, which is# why they have remained disabled in gcc for the main kernel build. And it is# only due to including kernel data structures in the selftests, that we get the# warnings from clang. Therefore, disable the warnings for clang builds.CFLAGS += -Wno-address-of-packed-memberCFLAGS += -Wno-gnu-variable-sized-type-not-at-end CC := $(CLANG) $(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)/../../.. # msg: emit succinct information message describing current building step# $1 - generic step name (e.g., CC, LINK, etc);# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor];# $3 - target (assumed to be file); only file name will be emitted;# $4 - optional extra arg, emitted as-is, if provided.ifeq ($(V),1)Q =msg =elseQ = @msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";MAKEFLAGS += --no-print-directoryendif ifeq ($(KHDR_INCLUDES),)KHDR_INCLUDES := -isystem $(top_srcdir)/usr/includeendif # In order to use newer items that haven't yet been added to the user's system# header files, add $(TOOLS_INCLUDES) to the compiler invocation in each# each selftest.# You may need to add files to that location, or to refresh an existing file. In# order to do that, run "make headers" from $(top_srcdir), then copy the# header file that you want from $(top_srcdir)/usr/include/... , to the matching# subdir in $(TOOLS_INCLUDE).TOOLS_INCLUDES := -isystem $(top_srcdir)/tools/include/uapi # 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) \ $(if $(TEST_GEN_MODS_DIR),gen_mods_dir) define RUN_TESTS BASE_DIR="$(selfdir)"; \ . $(selfdir)/kselftest/runner.sh; \ if [ "X$(summary)" != "X" ]; then \ per_test_logging=1; \ fi; \ run_many $(1)endef define INSTALL_INCLUDES $(if $(TEST_INCLUDES), \ relative_files=""; \ for entry in $(TEST_INCLUDES); do \ entry_dir=$$(readlink -e "$$(dirname "$$entry")"); \ entry_name=$$(basename "$$entry"); \ relative_dir=$${entry_dir#"$$SRC_PATH"/}; \ if [ "$$relative_dir" = "$$entry_dir" ]; then \ echo "Error: TEST_INCLUDES entry \"$$entry\" not located inside selftests directory ($$SRC_PATH)" >&2; \ exit 1; \ fi; \ relative_files="$$relative_files $$relative_dir/$$entry_name"; \ done; \ cd $(SRC_PATH) && rsync -aR $$relative_files $(OBJ_PATH)/ \ )endef run_tests: allifdef building_out_of_srctree @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)$(TEST_GEN_MODS_DIR)" != "X" ]; then \ rsync -aq --copy-unsafe-links $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(TEST_GEN_MODS_DIR) $(OUTPUT); \ fi @$(INSTALL_INCLUDES) @if [ "X$(TEST_PROGS)" != "X" ]; then \ $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) \ $(addprefix $(OUTPUT)/,$(TEST_PROGS))) ; \ else \ $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS)); \ fielse @$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS))endif gen_mods_dir: $(Q)$(MAKE) -C $(TEST_GEN_MODS_DIR) clean_mods_dir: $(Q)$(MAKE) -C $(TEST_GEN_MODS_DIR) clean define INSTALL_SINGLE_RULE $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH)) $(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST) $(INSTALL_PATH)/)endef define INSTALL_MODS_RULE $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH)/$(INSTALL_LIST)) $(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST)/*.ko $(INSTALL_PATH)/$(INSTALL_LIST))endef define INSTALL_RULE $(eval INSTALL_LIST = $(TEST_PROGS)) $(INSTALL_SINGLE_RULE) $(eval INSTALL_LIST = $(TEST_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE) $(eval INSTALL_LIST = $(TEST_FILES)) $(INSTALL_SINGLE_RULE) $(eval INSTALL_LIST = $(TEST_GEN_PROGS)) $(INSTALL_SINGLE_RULE) $(eval INSTALL_LIST = $(TEST_CUSTOM_PROGS)) $(INSTALL_SINGLE_RULE) $(eval INSTALL_LIST = $(TEST_GEN_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE) $(eval INSTALL_LIST = $(TEST_GEN_FILES)) $(INSTALL_SINGLE_RULE) $(eval INSTALL_LIST = $(notdir $(TEST_GEN_MODS_DIR))) $(INSTALL_MODS_RULE) $(eval INSTALL_LIST = $(wildcard config settings)) $(INSTALL_SINGLE_RULE)endef install: allifdef INSTALL_PATH $(INSTALL_RULE) $(INSTALL_INCLUDES)else $(error Error: set INSTALL_PATH to use install)endif emit_tests: for TEST in $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS); do \ BASENAME_TEST=`basename $$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: $(if $(TEST_GEN_MODS_DIR),clean_mods_dir) $(CLEAN) # Build with _GNU_SOURCE by defaultCFLAGS += -D_GNU_SOURCE= # 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) $(call msg,CC,,$@) $(Q)$(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 gen_mods_dir clean_mods_dir
# 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 := $(LLVM_PREFIX)clang$(LLVM_SUFFIX)
CLANG_TARGET_FLAGS_arm := arm-linux-gnueabi
CLANG_TARGET_FLAGS_arm64 := aarch64-linux-gnu
CLANG_TARGET_FLAGS_hexagon := hexagon-linux-musl
CLANG_TARGET_FLAGS_i386 := i386-linux-gnu
CLANG_TARGET_FLAGS_m68k := m68k-linux-gnu
CLANG_TARGET_FLAGS_mips := mipsel-linux-gnu
CLANG_TARGET_FLAGS_powerpc := powerpc64le-linux-gnu
CLANG_TARGET_FLAGS_riscv := riscv64-linux-gnu
CLANG_TARGET_FLAGS_s390 := s390x-linux-gnu
CLANG_TARGET_FLAGS_x86 := x86_64-linux-gnu
CLANG_TARGET_FLAGS_x86_64 := x86_64-linux-gnu
# Default to host architecture if ARCH is not explicitly given.
ifeq ($(ARCH),)
CLANG_TARGET_FLAGS := $(shell $(CLANG) -print-target-triple)
else
CLANG_TARGET_FLAGS := $(CLANG_TARGET_FLAGS_$(ARCH))
endif
ifeq ($(CROSS_COMPILE),)
ifeq ($(CLANG_TARGET_FLAGS),)
$(error Specify CROSS_COMPILE or add '--target=' option to lib.mk)
else
CLANG_FLAGS += --target=$(CLANG_TARGET_FLAGS)
endif # CLANG_TARGET_FLAGS
else
CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%))
endif # CROSS_COMPILE
# gcc defaults to silence (off) for the following warnings, but clang defaults
# to the opposite. The warnings are not useful for the kernel itself, which is
# why they have remained disabled in gcc for the main kernel build. And it is
# only due to including kernel data structures in the selftests, that we get the
# warnings from clang. Therefore, disable the warnings for clang builds.
CFLAGS += -Wno-address-of-packed-member
CFLAGS += -Wno-gnu-variable-sized-type-not-at-end
CC := $(CLANG) $(CLANG_FLAGS) -fintegrated-as
else
CC := $(CROSS_COMPILE)gcc
endif # LLVM
ifeq (0,$(MAKELEVEL))
ifeq ($(OUTPUT),)
OUTPUT := $(shell pwd)
DEFAULT_INSTALL_HDR_PATH := 1
endif
endif
selfdir = $(realpath $(dir $(filter %/lib.mk,$(MAKEFILE_LIST))))
top_srcdir = $(selfdir)/../../..
# msg: emit succinct information message describing current building step
# $1 - generic step name (e.g., CC, LINK, etc);
# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor];
# $3 - target (assumed to be file); only file name will be emitted;
# $4 - optional extra arg, emitted as-is, if provided.
ifeq ($(V),1)
Q =
msg =
else
Q = @
msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";
MAKEFLAGS += --no-print-directory
endif
ifeq ($(KHDR_INCLUDES),)
KHDR_INCLUDES := -isystem $(top_srcdir)/usr/include
endif
# In order to use newer items that haven't yet been added to the user's system
# header files, add $(TOOLS_INCLUDES) to the compiler invocation in each
# each selftest.
# You may need to add files to that location, or to refresh an existing file. In
# order to do that, run "make headers" from $(top_srcdir), then copy the
# header file that you want from $(top_srcdir)/usr/include/... , to the matching
# subdir in $(TOOLS_INCLUDE).
TOOLS_INCLUDES := -isystem $(top_srcdir)/tools/include/uapi
# 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) \
$(if $(TEST_GEN_MODS_DIR),gen_mods_dir)
define RUN_TESTS
BASE_DIR="$(selfdir)"; \
. $(selfdir)/kselftest/runner.sh; \
if [ "X$(summary)" != "X" ]; then \
per_test_logging=1; \
fi; \
run_many $(1)
endef
define INSTALL_INCLUDES
$(if $(TEST_INCLUDES), \
relative_files=""; \
for entry in $(TEST_INCLUDES); do \
entry_dir=$$(readlink -e "$$(dirname "$$entry")"); \
entry_name=$$(basename "$$entry"); \
relative_dir=$${entry_dir#"$$SRC_PATH"/}; \
if [ "$$relative_dir" = "$$entry_dir" ]; then \
echo "Error: TEST_INCLUDES entry \"$$entry\" not located inside selftests directory ($$SRC_PATH)" >&2; \
exit 1; \
fi; \
relative_files="$$relative_files $$relative_dir/$$entry_name"; \
done; \
cd $(SRC_PATH) && rsync -aR $$relative_files $(OBJ_PATH)/ \
)
endef
run_tests: all
ifdef building_out_of_srctree
@if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)$(TEST_GEN_MODS_DIR)" != "X" ]; then \
rsync -aq --copy-unsafe-links $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(TEST_GEN_MODS_DIR) $(OUTPUT); \
fi
@$(INSTALL_INCLUDES)
@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) $(TEST_CUSTOM_PROGS)); \
fi
else
@$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS))
endif
gen_mods_dir:
$(Q)$(MAKE) -C $(TEST_GEN_MODS_DIR)
clean_mods_dir:
$(Q)$(MAKE) -C $(TEST_GEN_MODS_DIR) clean
define INSTALL_SINGLE_RULE
$(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH))
$(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST) $(INSTALL_PATH)/)
endef
define INSTALL_MODS_RULE
$(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH)/$(INSTALL_LIST))
$(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST)/*.ko $(INSTALL_PATH)/$(INSTALL_LIST))
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 = $(notdir $(TEST_GEN_MODS_DIR))) $(INSTALL_MODS_RULE)
$(eval INSTALL_LIST = $(wildcard config settings)) $(INSTALL_SINGLE_RULE)
endef
install: all
ifdef INSTALL_PATH
$(INSTALL_RULE)
$(INSTALL_INCLUDES)
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 -f
endif
define CLEAN
$(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN)
endef
clean: $(if $(TEST_GEN_MODS_DIR),clean_mods_dir)
$(CLEAN)
# Build with _GNU_SOURCE by default
CFLAGS += -D_GNU_SOURCE=
# Enables to extend CFLAGS and LDFLAGS from command line, e.g.
# make USERCFLAGS=-Werror USERLDFLAGS=-static
CFLAGS += $(USERCFLAGS)
LDFLAGS += $(USERLDFLAGS)
# When make O= with kselftest target from main level
# the following aren't defined.
#
ifdef building_out_of_srctree
LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
LINK.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)
$(call msg,CC,,$@)
$(Q)$(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 gen_mods_dir clean_mods_dir