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. 3ifneq ($(LLVM),) 4ifneq ($(filter %/,$(LLVM)),) 5LLVM_PREFIX := $(LLVM) 6else ifneq ($(filter -%,$(LLVM)),) 7LLVM_SUFFIX := $(LLVM) 8endif 9 10CLANG_TARGET_FLAGS_arm := arm-linux-gnueabi 11CLANG_TARGET_FLAGS_arm64 := aarch64-linux-gnu 12CLANG_TARGET_FLAGS_hexagon := hexagon-linux-musl 13CLANG_TARGET_FLAGS_i386 := i386-linux-gnu 14CLANG_TARGET_FLAGS_m68k := m68k-linux-gnu 15CLANG_TARGET_FLAGS_mips := mipsel-linux-gnu 16CLANG_TARGET_FLAGS_powerpc := powerpc64le-linux-gnu 17CLANG_TARGET_FLAGS_riscv := riscv64-linux-gnu 18CLANG_TARGET_FLAGS_s390 := s390x-linux-gnu 19CLANG_TARGET_FLAGS_x86 := x86_64-linux-gnu 20CLANG_TARGET_FLAGS_x86_64 := x86_64-linux-gnu 21CLANG_TARGET_FLAGS := $(CLANG_TARGET_FLAGS_$(ARCH)) 22 23ifeq ($(CROSS_COMPILE),) 24ifeq ($(CLANG_TARGET_FLAGS),) 25$(error Specify CROSS_COMPILE or add '--target=' option to lib.mk) 26else 27CLANG_FLAGS += --target=$(CLANG_TARGET_FLAGS) 28endif # CLANG_TARGET_FLAGS 29else 30CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%)) 31endif # CROSS_COMPILE 32 33CC := $(LLVM_PREFIX)clang$(LLVM_SUFFIX) $(CLANG_FLAGS) -fintegrated-as 34else 35CC := $(CROSS_COMPILE)gcc 36endif # LLVM 37 38ifeq (0,$(MAKELEVEL)) 39 ifeq ($(OUTPUT),) 40 OUTPUT := $(shell pwd) 41 DEFAULT_INSTALL_HDR_PATH := 1 42 endif 43endif 44selfdir = $(realpath $(dir $(filter %/lib.mk,$(MAKEFILE_LIST)))) 45top_srcdir = $(selfdir)/../../.. 46 47ifeq ("$(origin O)", "command line") 48 KBUILD_OUTPUT := $(O) 49endif 50 51ifneq ($(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 60else 61 abs_srctree := $(shell cd $(top_srcdir) && pwd) 62 KHDR_DIR := ${abs_srctree}/usr/include 63endif 64 65KHDR_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. 73TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS)) 74TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED)) 75TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES)) 76 77all: kernel_header_files $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) \ 78 $(TEST_GEN_FILES) 79 80kernel_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 97define 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) 104endef 105 106run_tests: all 107ifdef building_out_of_srctree 108 @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)" != "X" ]; then \ 109 rsync -aq --copy-unsafe-links $(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 117else 118 @$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS)) 119endif 120 121define INSTALL_SINGLE_RULE 122 $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH)) 123 $(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST) $(INSTALL_PATH)/) 124endef 125 126define 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) 135endef 136 137install: all 138ifdef INSTALL_PATH 139 $(INSTALL_RULE) 140else 141 $(error Error: set INSTALL_PATH to use install) 142endif 143 144emit_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. 151ifeq ($(RM),) 152RM := rm -f 153endif 154 155define CLEAN 156 $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN) 157endef 158 159clean: 160 $(CLEAN) 161 162# Enables to extend CFLAGS and LDFLAGS from command line, e.g. 163# make USERCFLAGS=-Werror USERLDFLAGS=-static 164CFLAGS += $(USERCFLAGS) 165LDFLAGS += $(USERLDFLAGS) 166 167# When make O= with kselftest target from main level 168# the following aren't defined. 169# 170ifdef building_out_of_srctree 171LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) 172COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c 173LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) 174endif 175 176# Selftest makefiles can override those targets by setting 177# OVERRIDE_TARGETS = 1. 178ifeq ($(OVERRIDE_TARGETS),) 179LOCAL_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 $@ 188endif 189 190.PHONY: run_tests all clean install emit_tests 191