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 := -D_GNU_SOURCE -isystem $(top_srcdir)/usr/include 71endif 72 73# The following are built by lib.mk common compile rules. 74# TEST_CUSTOM_PROGS should be used by tests that require 75# custom build rule and prevent common build rule use. 76# TEST_PROGS are for test shell scripts. 77# TEST_CUSTOM_PROGS and TEST_PROGS will be run by common run_tests 78# and install targets. Common clean doesn't touch them. 79TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS)) 80TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED)) 81TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES)) 82 83all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) \ 84 $(if $(TEST_GEN_MODS_DIR),gen_mods_dir) 85 86define RUN_TESTS 87 BASE_DIR="$(selfdir)"; \ 88 . $(selfdir)/kselftest/runner.sh; \ 89 if [ "X$(summary)" != "X" ]; then \ 90 per_test_logging=1; \ 91 fi; \ 92 run_many $(1) 93endef 94 95define INSTALL_INCLUDES 96 $(if $(TEST_INCLUDES), \ 97 relative_files=""; \ 98 for entry in $(TEST_INCLUDES); do \ 99 entry_dir=$$(readlink -e "$$(dirname "$$entry")"); \ 100 entry_name=$$(basename "$$entry"); \ 101 relative_dir=$${entry_dir#"$$SRC_PATH"/}; \ 102 if [ "$$relative_dir" = "$$entry_dir" ]; then \ 103 echo "Error: TEST_INCLUDES entry \"$$entry\" not located inside selftests directory ($$SRC_PATH)" >&2; \ 104 exit 1; \ 105 fi; \ 106 relative_files="$$relative_files $$relative_dir/$$entry_name"; \ 107 done; \ 108 cd $(SRC_PATH) && rsync -aR $$relative_files $(OBJ_PATH)/ \ 109 ) 110endef 111 112run_tests: all 113ifdef building_out_of_srctree 114 @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)$(TEST_GEN_MODS_DIR)" != "X" ]; then \ 115 rsync -aq --copy-unsafe-links $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(TEST_GEN_MODS_DIR) $(OUTPUT); \ 116 fi 117 @$(INSTALL_INCLUDES) 118 @if [ "X$(TEST_PROGS)" != "X" ]; then \ 119 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) \ 120 $(addprefix $(OUTPUT)/,$(TEST_PROGS))) ; \ 121 else \ 122 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS)); \ 123 fi 124else 125 @$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS)) 126endif 127 128gen_mods_dir: 129 $(Q)$(MAKE) -C $(TEST_GEN_MODS_DIR) 130 131clean_mods_dir: 132 $(Q)$(MAKE) -C $(TEST_GEN_MODS_DIR) clean 133 134define INSTALL_SINGLE_RULE 135 $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH)) 136 $(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST) $(INSTALL_PATH)/) 137endef 138 139define INSTALL_MODS_RULE 140 $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH)/$(INSTALL_LIST)) 141 $(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST)/*.ko $(INSTALL_PATH)/$(INSTALL_LIST)) 142endef 143 144define INSTALL_RULE 145 $(eval INSTALL_LIST = $(TEST_PROGS)) $(INSTALL_SINGLE_RULE) 146 $(eval INSTALL_LIST = $(TEST_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE) 147 $(eval INSTALL_LIST = $(TEST_FILES)) $(INSTALL_SINGLE_RULE) 148 $(eval INSTALL_LIST = $(TEST_GEN_PROGS)) $(INSTALL_SINGLE_RULE) 149 $(eval INSTALL_LIST = $(TEST_CUSTOM_PROGS)) $(INSTALL_SINGLE_RULE) 150 $(eval INSTALL_LIST = $(TEST_GEN_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE) 151 $(eval INSTALL_LIST = $(TEST_GEN_FILES)) $(INSTALL_SINGLE_RULE) 152 $(eval INSTALL_LIST = $(notdir $(TEST_GEN_MODS_DIR))) $(INSTALL_MODS_RULE) 153 $(eval INSTALL_LIST = $(wildcard config settings)) $(INSTALL_SINGLE_RULE) 154endef 155 156install: all 157ifdef INSTALL_PATH 158 $(INSTALL_RULE) 159 $(INSTALL_INCLUDES) 160else 161 $(error Error: set INSTALL_PATH to use install) 162endif 163 164emit_tests: 165 for TEST in $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS); do \ 166 BASENAME_TEST=`basename $$TEST`; \ 167 echo "$(COLLECTION):$$BASENAME_TEST"; \ 168 done 169 170# define if isn't already. It is undefined in make O= case. 171ifeq ($(RM),) 172RM := rm -f 173endif 174 175define CLEAN 176 $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN) 177endef 178 179clean: $(if $(TEST_GEN_MODS_DIR),clean_mods_dir) 180 $(CLEAN) 181 182# Enables to extend CFLAGS and LDFLAGS from command line, e.g. 183# make USERCFLAGS=-Werror USERLDFLAGS=-static 184CFLAGS += $(USERCFLAGS) 185LDFLAGS += $(USERLDFLAGS) 186 187# When make O= with kselftest target from main level 188# the following aren't defined. 189# 190ifdef building_out_of_srctree 191LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) 192COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c 193LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) 194endif 195 196# Selftest makefiles can override those targets by setting 197# OVERRIDE_TARGETS = 1. 198ifeq ($(OVERRIDE_TARGETS),) 199LOCAL_HDRS += $(selfdir)/kselftest_harness.h $(selfdir)/kselftest.h 200$(OUTPUT)/%:%.c $(LOCAL_HDRS) 201 $(call msg,CC,,$@) 202 $(Q)$(LINK.c) $(filter-out $(LOCAL_HDRS),$^) $(LDLIBS) -o $@ 203 204$(OUTPUT)/%.o:%.S 205 $(COMPILE.S) $^ -o $@ 206 207$(OUTPUT)/%:%.S 208 $(LINK.S) $^ $(LDLIBS) -o $@ 209endif 210 211.PHONY: run_tests all clean install emit_tests gen_mods_dir clean_mods_dir 212