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 47# msg: emit succinct information message describing current building step 48# $1 - generic step name (e.g., CC, LINK, etc); 49# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor]; 50# $3 - target (assumed to be file); only file name will be emitted; 51# $4 - optional extra arg, emitted as-is, if provided. 52ifeq ($(V),1) 53Q = 54msg = 55else 56Q = @ 57msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))"; 58MAKEFLAGS += --no-print-directory 59endif 60 61ifeq ($(KHDR_INCLUDES),) 62KHDR_INCLUDES := -isystem $(top_srcdir)/usr/include 63endif 64 65# The following are built by lib.mk common compile rules. 66# TEST_CUSTOM_PROGS should be used by tests that require 67# custom build rule and prevent common build rule use. 68# TEST_PROGS are for test shell scripts. 69# TEST_CUSTOM_PROGS and TEST_PROGS will be run by common run_tests 70# and install targets. Common clean doesn't touch them. 71TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS)) 72TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED)) 73TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES)) 74 75all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) \ 76 $(if $(TEST_GEN_MODS_DIR),gen_mods_dir) 77 78define RUN_TESTS 79 BASE_DIR="$(selfdir)"; \ 80 . $(selfdir)/kselftest/runner.sh; \ 81 if [ "X$(summary)" != "X" ]; then \ 82 per_test_logging=1; \ 83 fi; \ 84 run_many $(1) 85endef 86 87define INSTALL_INCLUDES 88 $(if $(TEST_INCLUDES), \ 89 relative_files=""; \ 90 for entry in $(TEST_INCLUDES); do \ 91 entry_dir=$$(readlink -e "$$(dirname "$$entry")"); \ 92 entry_name=$$(basename "$$entry"); \ 93 relative_dir=$${entry_dir#"$$SRC_PATH"/}; \ 94 if [ "$$relative_dir" = "$$entry_dir" ]; then \ 95 echo "Error: TEST_INCLUDES entry \"$$entry\" not located inside selftests directory ($$SRC_PATH)" >&2; \ 96 exit 1; \ 97 fi; \ 98 relative_files="$$relative_files $$relative_dir/$$entry_name"; \ 99 done; \ 100 cd $(SRC_PATH) && rsync -aR $$relative_files $(OBJ_PATH)/ \ 101 ) 102endef 103 104run_tests: all 105ifdef building_out_of_srctree 106 @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)$(TEST_GEN_MODS_DIR)" != "X" ]; then \ 107 rsync -aq --copy-unsafe-links $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(TEST_GEN_MODS_DIR) $(OUTPUT); \ 108 fi 109 @$(INSTALL_INCLUDES) 110 @if [ "X$(TEST_PROGS)" != "X" ]; then \ 111 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) \ 112 $(addprefix $(OUTPUT)/,$(TEST_PROGS))) ; \ 113 else \ 114 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS)); \ 115 fi 116else 117 @$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS)) 118endif 119 120gen_mods_dir: 121 $(Q)$(MAKE) -C $(TEST_GEN_MODS_DIR) 122 123clean_mods_dir: 124 $(Q)$(MAKE) -C $(TEST_GEN_MODS_DIR) clean 125 126define INSTALL_SINGLE_RULE 127 $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH)) 128 $(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST) $(INSTALL_PATH)/) 129endef 130 131define INSTALL_MODS_RULE 132 $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH)/$(INSTALL_LIST)) 133 $(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST)/*.ko $(INSTALL_PATH)/$(INSTALL_LIST)) 134endef 135 136define INSTALL_RULE 137 $(eval INSTALL_LIST = $(TEST_PROGS)) $(INSTALL_SINGLE_RULE) 138 $(eval INSTALL_LIST = $(TEST_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE) 139 $(eval INSTALL_LIST = $(TEST_FILES)) $(INSTALL_SINGLE_RULE) 140 $(eval INSTALL_LIST = $(TEST_GEN_PROGS)) $(INSTALL_SINGLE_RULE) 141 $(eval INSTALL_LIST = $(TEST_CUSTOM_PROGS)) $(INSTALL_SINGLE_RULE) 142 $(eval INSTALL_LIST = $(TEST_GEN_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE) 143 $(eval INSTALL_LIST = $(TEST_GEN_FILES)) $(INSTALL_SINGLE_RULE) 144 $(eval INSTALL_LIST = $(notdir $(TEST_GEN_MODS_DIR))) $(INSTALL_MODS_RULE) 145 $(eval INSTALL_LIST = $(wildcard config settings)) $(INSTALL_SINGLE_RULE) 146endef 147 148install: all 149ifdef INSTALL_PATH 150 $(INSTALL_RULE) 151 $(INSTALL_INCLUDES) 152else 153 $(error Error: set INSTALL_PATH to use install) 154endif 155 156emit_tests: 157 for TEST in $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS); do \ 158 BASENAME_TEST=`basename $$TEST`; \ 159 echo "$(COLLECTION):$$BASENAME_TEST"; \ 160 done 161 162# define if isn't already. It is undefined in make O= case. 163ifeq ($(RM),) 164RM := rm -f 165endif 166 167define CLEAN 168 $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN) 169endef 170 171clean: $(if $(TEST_GEN_MODS_DIR),clean_mods_dir) 172 $(CLEAN) 173 174# Enables to extend CFLAGS and LDFLAGS from command line, e.g. 175# make USERCFLAGS=-Werror USERLDFLAGS=-static 176CFLAGS += $(USERCFLAGS) 177LDFLAGS += $(USERLDFLAGS) 178 179# When make O= with kselftest target from main level 180# the following aren't defined. 181# 182ifdef building_out_of_srctree 183LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) 184COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c 185LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) 186endif 187 188# Selftest makefiles can override those targets by setting 189# OVERRIDE_TARGETS = 1. 190ifeq ($(OVERRIDE_TARGETS),) 191LOCAL_HDRS += $(selfdir)/kselftest_harness.h $(selfdir)/kselftest.h 192$(OUTPUT)/%:%.c $(LOCAL_HDRS) 193 $(call msg,CC,,$@) 194 $(Q)$(LINK.c) $(filter-out $(LOCAL_HDRS),$^) $(LDLIBS) -o $@ 195 196$(OUTPUT)/%.o:%.S 197 $(COMPILE.S) $^ -o $@ 198 199$(OUTPUT)/%:%.S 200 $(LINK.S) $^ $(LDLIBS) -o $@ 201endif 202 203.PHONY: run_tests all clean install emit_tests gen_mods_dir clean_mods_dir 204