# 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_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-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 = $(selfdir)/../../.. ifeq ("$(origin O)", "command line") KBUILD_OUTPUT := $(O)endif ifneq ($(KBUILD_OUTPUT),) # Make's built-in functions such as $(abspath ...), $(realpath ...) cannot # expand a shell special character '~'. We use a somewhat tedious way here. abs_objtree := $(shell cd $(top_srcdir) && mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && pwd) $(if $(abs_objtree),, \ $(error failed to create output directory "$(KBUILD_OUTPUT)")) # $(realpath ...) resolves symlinks abs_objtree := $(realpath $(abs_objtree)) KHDR_DIR := ${abs_objtree}/usr/includeelse abs_srctree := $(shell cd $(top_srcdir) && pwd) KHDR_DIR := ${abs_srctree}/usr/includeendif KHDR_INCLUDES := -isystem $(KHDR_DIR) # 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: kernel_header_files $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) \ $(TEST_GEN_FILES) kernel_header_files: @ls $(KHDR_DIR)/linux/*.h >/dev/null 2>/dev/null; \ if [ $$? -ne 0 ]; then \ RED='\033[1;31m'; \ NOCOLOR='\033[0m'; \ echo; \ echo -e "$${RED}error$${NOCOLOR}: missing kernel header files."; \ echo "Please run this and try again:"; \ echo; \ echo " cd $(top_srcdir)"; \ echo " make headers"; \ echo; \ exit 1; \ fi .PHONY: kernel_header_files define RUN_TESTS BASE_DIR="$(selfdir)"; \ . $(selfdir)/kselftest/runner.sh; \ if [ "X$(summary)" != "X" ]; then \ per_test_logging=1; \ fi; \ run_many $(1)endef run_tests: allifdef building_out_of_srctree @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)" != "X" ]; then \ rsync -aq --copy-unsafe-links $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(OUTPUT); \ fi @if [ "X$(TEST_PROGS)" != "X" ]; then \ $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) \ $(addprefix $(OUTPUT)/,$(TEST_PROGS))) ; \ else \ $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS)); \ fielse @$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS))endif define INSTALL_SINGLE_RULE $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH)) $(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST) $(INSTALL_PATH)/)endef define INSTALL_RULE $(eval INSTALL_LIST = $(TEST_PROGS)) $(INSTALL_SINGLE_RULE) $(eval INSTALL_LIST = $(TEST_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE) $(eval INSTALL_LIST = $(TEST_FILES)) $(INSTALL_SINGLE_RULE) $(eval INSTALL_LIST = $(TEST_GEN_PROGS)) $(INSTALL_SINGLE_RULE) $(eval INSTALL_LIST = $(TEST_CUSTOM_PROGS)) $(INSTALL_SINGLE_RULE) $(eval INSTALL_LIST = $(TEST_GEN_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE) $(eval INSTALL_LIST = $(TEST_GEN_FILES)) $(INSTALL_SINGLE_RULE) $(eval INSTALL_LIST = $(wildcard config settings)) $(INSTALL_SINGLE_RULE)endef install: allifdef INSTALL_PATH $(INSTALL_RULE)else $(error Error: set INSTALL_PATH to use install)endif emit_tests: for TEST in $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS); do \ BASENAME_TEST=`basename $$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
# 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-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
CLANG_TARGET_FLAGS := $(CLANG_TARGET_FLAGS_$(ARCH))
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
CC := $(LLVM_PREFIX)clang$(LLVM_SUFFIX) $(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)/../../..
ifeq ("$(origin O)", "command line")
KBUILD_OUTPUT := $(O)
endif
ifneq ($(KBUILD_OUTPUT),)
# Make's built-in functions such as $(abspath ...), $(realpath ...) cannot
# expand a shell special character '~'. We use a somewhat tedious way here.
abs_objtree := $(shell cd $(top_srcdir) && mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && pwd)
$(if $(abs_objtree),, \
$(error failed to create output directory "$(KBUILD_OUTPUT)"))
# $(realpath ...) resolves symlinks
abs_objtree := $(realpath $(abs_objtree))
KHDR_DIR := ${abs_objtree}/usr/include
else
abs_srctree := $(shell cd $(top_srcdir) && pwd)
KHDR_DIR := ${abs_srctree}/usr/include
endif
KHDR_INCLUDES := -isystem $(KHDR_DIR)
# 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: kernel_header_files $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) \
$(TEST_GEN_FILES)
kernel_header_files:
@ls $(KHDR_DIR)/linux/*.h >/dev/null 2>/dev/null; \
if [ $$? -ne 0 ]; then \
RED='\033[1;31m'; \
NOCOLOR='\033[0m'; \
echo; \
echo -e "$${RED}error$${NOCOLOR}: missing kernel header files."; \
echo "Please run this and try again:"; \
echo; \
echo " cd $(top_srcdir)"; \
echo " make headers"; \
echo; \
exit 1; \
fi
.PHONY: kernel_header_files
define RUN_TESTS
BASE_DIR="$(selfdir)"; \
. $(selfdir)/kselftest/runner.sh; \
if [ "X$(summary)" != "X" ]; then \
per_test_logging=1; \
fi; \
run_many $(1)
endef
run_tests: all
ifdef building_out_of_srctree
@if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)" != "X" ]; then \
rsync -aq --copy-unsafe-links $(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) $(TEST_CUSTOM_PROGS)); \
fi
else
@$(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 -a --copy-unsafe-links $(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: all
ifdef 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 -f
endif
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=-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)
$(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