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 55# msg: emit succinct information message describing current building step 56# $1 - generic step name (e.g., CC, LINK, etc); 57# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor]; 58# $3 - target (assumed to be file); only file name will be emitted; 59# $4 - optional extra arg, emitted as-is, if provided. 60ifeq ($(V),1) 61Q = 62msg = 63else 64Q = @ 65msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))"; 66MAKEFLAGS += --no-print-directory 67endif 68 69ifeq ($(KHDR_INCLUDES),) 70KHDR_INCLUDES := -isystem $(top_srcdir)/usr/include 71endif 72 73# In order to use newer items that haven't yet been added to the user's system 74# header files, add $(TOOLS_INCLUDES) to the compiler invocation in each 75# each selftest. 76# You may need to add files to that location, or to refresh an existing file. In 77# order to do that, run "make headers" from $(top_srcdir), then copy the 78# header file that you want from $(top_srcdir)/usr/include/... , to the matching 79# subdir in $(TOOLS_INCLUDE). 80TOOLS_INCLUDES := -isystem $(top_srcdir)/tools/include/uapi 81 82# The following are built by lib.mk common compile rules. 83# TEST_CUSTOM_PROGS should be used by tests that require 84# custom build rule and prevent common build rule use. 85# TEST_PROGS are for test shell scripts. 86# TEST_CUSTOM_PROGS and TEST_PROGS will be run by common run_tests 87# and install targets. Common clean doesn't touch them. 88TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS)) 89TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED)) 90TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES)) 91 92all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) \ 93 $(if $(TEST_GEN_MODS_DIR),gen_mods_dir) 94 95define RUN_TESTS 96 BASE_DIR="$(selfdir)"; \ 97 . $(selfdir)/kselftest/runner.sh; \ 98 if [ "X$(summary)" != "X" ]; then \ 99 per_test_logging=1; \ 100 fi; \ 101 run_many $(1) 102endef 103 104define INSTALL_INCLUDES 105 $(if $(TEST_INCLUDES), \ 106 relative_files=""; \ 107 for entry in $(TEST_INCLUDES); do \ 108 entry_dir=$$(readlink -e "$$(dirname "$$entry")"); \ 109 entry_name=$$(basename "$$entry"); \ 110 relative_dir=$${entry_dir#"$$SRC_PATH"/}; \ 111 if [ "$$relative_dir" = "$$entry_dir" ]; then \ 112 echo "Error: TEST_INCLUDES entry \"$$entry\" not located inside selftests directory ($$SRC_PATH)" >&2; \ 113 exit 1; \ 114 fi; \ 115 relative_files="$$relative_files $$relative_dir/$$entry_name"; \ 116 done; \ 117 cd $(SRC_PATH) && rsync -aR $$relative_files $(OBJ_PATH)/ \ 118 ) 119endef 120 121run_tests: all 122ifdef building_out_of_srctree 123 @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)$(TEST_GEN_MODS_DIR)" != "X" ]; then \ 124 rsync -aq --copy-unsafe-links $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(TEST_GEN_MODS_DIR) $(OUTPUT); \ 125 fi 126 @$(INSTALL_INCLUDES) 127 @if [ "X$(TEST_PROGS)" != "X" ]; then \ 128 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) \ 129 $(addprefix $(OUTPUT)/,$(TEST_PROGS))) ; \ 130 else \ 131 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS)); \ 132 fi 133else 134 @$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS)) 135endif 136 137gen_mods_dir: 138 $(Q)$(MAKE) -C $(TEST_GEN_MODS_DIR) 139 140clean_mods_dir: 141 $(Q)$(MAKE) -C $(TEST_GEN_MODS_DIR) clean 142 143define INSTALL_SINGLE_RULE 144 $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH)) 145 $(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST) $(INSTALL_PATH)/) 146endef 147 148define INSTALL_MODS_RULE 149 $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH)/$(INSTALL_LIST)) 150 $(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST)/*.ko $(INSTALL_PATH)/$(INSTALL_LIST)) 151endef 152 153define INSTALL_RULE 154 $(eval INSTALL_LIST = $(TEST_PROGS)) $(INSTALL_SINGLE_RULE) 155 $(eval INSTALL_LIST = $(TEST_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE) 156 $(eval INSTALL_LIST = $(TEST_FILES)) $(INSTALL_SINGLE_RULE) 157 $(eval INSTALL_LIST = $(TEST_GEN_PROGS)) $(INSTALL_SINGLE_RULE) 158 $(eval INSTALL_LIST = $(TEST_CUSTOM_PROGS)) $(INSTALL_SINGLE_RULE) 159 $(eval INSTALL_LIST = $(TEST_GEN_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE) 160 $(eval INSTALL_LIST = $(TEST_GEN_FILES)) $(INSTALL_SINGLE_RULE) 161 $(eval INSTALL_LIST = $(notdir $(TEST_GEN_MODS_DIR))) $(INSTALL_MODS_RULE) 162 $(eval INSTALL_LIST = $(wildcard config settings)) $(INSTALL_SINGLE_RULE) 163endef 164 165install: all 166ifdef INSTALL_PATH 167 $(INSTALL_RULE) 168 $(INSTALL_INCLUDES) 169else 170 $(error Error: set INSTALL_PATH to use install) 171endif 172 173emit_tests: 174 for TEST in $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS); do \ 175 BASENAME_TEST=`basename $$TEST`; \ 176 echo "$(COLLECTION):$$BASENAME_TEST"; \ 177 done 178 179# define if isn't already. It is undefined in make O= case. 180ifeq ($(RM),) 181RM := rm -f 182endif 183 184define CLEAN 185 $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN) 186endef 187 188clean: $(if $(TEST_GEN_MODS_DIR),clean_mods_dir) 189 $(CLEAN) 190 191# Enables to extend CFLAGS and LDFLAGS from command line, e.g. 192# make USERCFLAGS=-Werror USERLDFLAGS=-static 193CFLAGS += $(USERCFLAGS) 194LDFLAGS += $(USERLDFLAGS) 195 196# When make O= with kselftest target from main level 197# the following aren't defined. 198# 199ifdef building_out_of_srctree 200LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) 201COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c 202LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) 203endif 204 205# Selftest makefiles can override those targets by setting 206# OVERRIDE_TARGETS = 1. 207ifeq ($(OVERRIDE_TARGETS),) 208LOCAL_HDRS += $(selfdir)/kselftest_harness.h $(selfdir)/kselftest.h 209$(OUTPUT)/%:%.c $(LOCAL_HDRS) 210 $(call msg,CC,,$@) 211 $(Q)$(LINK.c) $(filter-out $(LOCAL_HDRS),$^) $(LDLIBS) -o $@ 212 213$(OUTPUT)/%.o:%.S 214 $(COMPILE.S) $^ -o $@ 215 216$(OUTPUT)/%:%.S 217 $(LINK.S) $^ $(LDLIBS) -o $@ 218endif 219 220.PHONY: run_tests all clean install emit_tests gen_mods_dir clean_mods_dir 221