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 := $(LLVM_PREFIX)clang$(LLVM_SUFFIX) 11 12CLANG_TARGET_FLAGS_arm := arm-linux-gnueabi 13CLANG_TARGET_FLAGS_arm64 := aarch64-linux-gnu 14CLANG_TARGET_FLAGS_hexagon := hexagon-linux-musl 15CLANG_TARGET_FLAGS_i386 := i386-linux-gnu 16CLANG_TARGET_FLAGS_m68k := m68k-linux-gnu 17CLANG_TARGET_FLAGS_mips := mipsel-linux-gnu 18CLANG_TARGET_FLAGS_powerpc := powerpc64le-linux-gnu 19CLANG_TARGET_FLAGS_riscv := riscv64-linux-gnu 20CLANG_TARGET_FLAGS_s390 := s390x-linux-gnu 21CLANG_TARGET_FLAGS_x86 := x86_64-linux-gnu 22CLANG_TARGET_FLAGS_x86_64 := x86_64-linux-gnu 23 24# Default to host architecture if ARCH is not explicitly given. 25ifeq ($(ARCH),) 26CLANG_TARGET_FLAGS := $(shell $(CLANG) -print-target-triple) 27else 28CLANG_TARGET_FLAGS := $(CLANG_TARGET_FLAGS_$(ARCH)) 29endif 30 31ifeq ($(CROSS_COMPILE),) 32ifeq ($(CLANG_TARGET_FLAGS),) 33$(error Specify CROSS_COMPILE or add '--target=' option to lib.mk) 34else 35CLANG_FLAGS += --target=$(CLANG_TARGET_FLAGS) 36endif # CLANG_TARGET_FLAGS 37else 38CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%)) 39endif # CROSS_COMPILE 40 41CC := $(CLANG) $(CLANG_FLAGS) -fintegrated-as 42else 43CC := $(CROSS_COMPILE)gcc 44endif # LLVM 45 46ifeq (0,$(MAKELEVEL)) 47 ifeq ($(OUTPUT),) 48 OUTPUT := $(shell pwd) 49 DEFAULT_INSTALL_HDR_PATH := 1 50 endif 51endif 52selfdir = $(realpath $(dir $(filter %/lib.mk,$(MAKEFILE_LIST)))) 53top_srcdir = $(selfdir)/../../.. 54 55ifeq ($(KHDR_INCLUDES),) 56KHDR_INCLUDES := -D_GNU_SOURCE -isystem $(top_srcdir)/usr/include 57endif 58 59# The following are built by lib.mk common compile rules. 60# TEST_CUSTOM_PROGS should be used by tests that require 61# custom build rule and prevent common build rule use. 62# TEST_PROGS are for test shell scripts. 63# TEST_CUSTOM_PROGS and TEST_PROGS will be run by common run_tests 64# and install targets. Common clean doesn't touch them. 65TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS)) 66TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED)) 67TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES)) 68 69all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) \ 70 $(if $(TEST_GEN_MODS_DIR),gen_mods_dir) 71 72define RUN_TESTS 73 BASE_DIR="$(selfdir)"; \ 74 . $(selfdir)/kselftest/runner.sh; \ 75 if [ "X$(summary)" != "X" ]; then \ 76 per_test_logging=1; \ 77 fi; \ 78 run_many $(1) 79endef 80 81define INSTALL_INCLUDES 82 $(if $(TEST_INCLUDES), \ 83 relative_files=""; \ 84 for entry in $(TEST_INCLUDES); do \ 85 entry_dir=$$(readlink -e "$$(dirname "$$entry")"); \ 86 entry_name=$$(basename "$$entry"); \ 87 relative_dir=$${entry_dir#"$$SRC_PATH"/}; \ 88 if [ "$$relative_dir" = "$$entry_dir" ]; then \ 89 echo "Error: TEST_INCLUDES entry \"$$entry\" not located inside selftests directory ($$SRC_PATH)" >&2; \ 90 exit 1; \ 91 fi; \ 92 relative_files="$$relative_files $$relative_dir/$$entry_name"; \ 93 done; \ 94 cd $(SRC_PATH) && rsync -aR $$relative_files $(OBJ_PATH)/ \ 95 ) 96endef 97 98run_tests: all 99ifdef building_out_of_srctree 100 @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)$(TEST_GEN_MODS_DIR)" != "X" ]; then \ 101 rsync -aq --copy-unsafe-links $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(TEST_GEN_MODS_DIR) $(OUTPUT); \ 102 fi 103 @$(INSTALL_INCLUDES) 104 @if [ "X$(TEST_PROGS)" != "X" ]; then \ 105 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) \ 106 $(addprefix $(OUTPUT)/,$(TEST_PROGS))) ; \ 107 else \ 108 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS)); \ 109 fi 110else 111 @$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS)) 112endif 113 114gen_mods_dir: 115 $(Q)$(MAKE) -C $(TEST_GEN_MODS_DIR) 116 117clean_mods_dir: 118 $(Q)$(MAKE) -C $(TEST_GEN_MODS_DIR) clean 119 120define INSTALL_SINGLE_RULE 121 $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH)) 122 $(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST) $(INSTALL_PATH)/) 123endef 124 125define INSTALL_MODS_RULE 126 $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH)/$(INSTALL_LIST)) 127 $(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST)/*.ko $(INSTALL_PATH)/$(INSTALL_LIST)) 128endef 129 130define INSTALL_RULE 131 $(eval INSTALL_LIST = $(TEST_PROGS)) $(INSTALL_SINGLE_RULE) 132 $(eval INSTALL_LIST = $(TEST_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE) 133 $(eval INSTALL_LIST = $(TEST_FILES)) $(INSTALL_SINGLE_RULE) 134 $(eval INSTALL_LIST = $(TEST_GEN_PROGS)) $(INSTALL_SINGLE_RULE) 135 $(eval INSTALL_LIST = $(TEST_CUSTOM_PROGS)) $(INSTALL_SINGLE_RULE) 136 $(eval INSTALL_LIST = $(TEST_GEN_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE) 137 $(eval INSTALL_LIST = $(TEST_GEN_FILES)) $(INSTALL_SINGLE_RULE) 138 $(eval INSTALL_LIST = $(notdir $(TEST_GEN_MODS_DIR))) $(INSTALL_MODS_RULE) 139 $(eval INSTALL_LIST = $(wildcard config settings)) $(INSTALL_SINGLE_RULE) 140endef 141 142install: all 143ifdef INSTALL_PATH 144 $(INSTALL_RULE) 145 $(INSTALL_INCLUDES) 146else 147 $(error Error: set INSTALL_PATH to use install) 148endif 149 150emit_tests: 151 for TEST in $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS); do \ 152 BASENAME_TEST=`basename $$TEST`; \ 153 echo "$(COLLECTION):$$BASENAME_TEST"; \ 154 done 155 156# define if isn't already. It is undefined in make O= case. 157ifeq ($(RM),) 158RM := rm -f 159endif 160 161define CLEAN 162 $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN) 163endef 164 165clean: $(if $(TEST_GEN_MODS_DIR),clean_mods_dir) 166 $(CLEAN) 167 168# Enables to extend CFLAGS and LDFLAGS from command line, e.g. 169# make USERCFLAGS=-Werror USERLDFLAGS=-static 170CFLAGS += $(USERCFLAGS) 171LDFLAGS += $(USERLDFLAGS) 172 173# When make O= with kselftest target from main level 174# the following aren't defined. 175# 176ifdef building_out_of_srctree 177LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) 178COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c 179LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) 180endif 181 182# Selftest makefiles can override those targets by setting 183# OVERRIDE_TARGETS = 1. 184ifeq ($(OVERRIDE_TARGETS),) 185LOCAL_HDRS += $(selfdir)/kselftest_harness.h $(selfdir)/kselftest.h 186$(OUTPUT)/%:%.c $(LOCAL_HDRS) 187 $(LINK.c) $(filter-out $(LOCAL_HDRS),$^) $(LDLIBS) -o $@ 188 189$(OUTPUT)/%.o:%.S 190 $(COMPILE.S) $^ -o $@ 191 192$(OUTPUT)/%:%.S 193 $(LINK.S) $^ $(LDLIBS) -o $@ 194endif 195 196.PHONY: run_tests all clean install emit_tests gen_mods_dir clean_mods_dir 197