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 := -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) $(TEST_GEN_FILES) 70 71define RUN_TESTS 72 BASE_DIR="$(selfdir)"; \ 73 . $(selfdir)/kselftest/runner.sh; \ 74 if [ "X$(summary)" != "X" ]; then \ 75 per_test_logging=1; \ 76 fi; \ 77 run_many $(1) 78endef 79 80run_tests: all 81ifdef building_out_of_srctree 82 @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)" != "X" ]; then \ 83 rsync -aq --copy-unsafe-links $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(OUTPUT); \ 84 fi 85 @if [ "X$(TEST_PROGS)" != "X" ]; then \ 86 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) \ 87 $(addprefix $(OUTPUT)/,$(TEST_PROGS))) ; \ 88 else \ 89 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS)); \ 90 fi 91else 92 @$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS)) 93endif 94 95define INSTALL_SINGLE_RULE 96 $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH)) 97 $(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST) $(INSTALL_PATH)/) 98endef 99 100define INSTALL_RULE 101 $(eval INSTALL_LIST = $(TEST_PROGS)) $(INSTALL_SINGLE_RULE) 102 $(eval INSTALL_LIST = $(TEST_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE) 103 $(eval INSTALL_LIST = $(TEST_FILES)) $(INSTALL_SINGLE_RULE) 104 $(eval INSTALL_LIST = $(TEST_GEN_PROGS)) $(INSTALL_SINGLE_RULE) 105 $(eval INSTALL_LIST = $(TEST_CUSTOM_PROGS)) $(INSTALL_SINGLE_RULE) 106 $(eval INSTALL_LIST = $(TEST_GEN_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE) 107 $(eval INSTALL_LIST = $(TEST_GEN_FILES)) $(INSTALL_SINGLE_RULE) 108 $(eval INSTALL_LIST = $(wildcard config settings)) $(INSTALL_SINGLE_RULE) 109endef 110 111install: all 112ifdef INSTALL_PATH 113 $(INSTALL_RULE) 114else 115 $(error Error: set INSTALL_PATH to use install) 116endif 117 118emit_tests: 119 for TEST in $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS); do \ 120 BASENAME_TEST=`basename $$TEST`; \ 121 echo "$(COLLECTION):$$BASENAME_TEST"; \ 122 done 123 124# define if isn't already. It is undefined in make O= case. 125ifeq ($(RM),) 126RM := rm -f 127endif 128 129define CLEAN 130 $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN) 131endef 132 133clean: 134 $(CLEAN) 135 136# Enables to extend CFLAGS and LDFLAGS from command line, e.g. 137# make USERCFLAGS=-Werror USERLDFLAGS=-static 138CFLAGS += $(USERCFLAGS) 139LDFLAGS += $(USERLDFLAGS) 140 141# When make O= with kselftest target from main level 142# the following aren't defined. 143# 144ifdef building_out_of_srctree 145LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) 146COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c 147LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) 148endif 149 150# Selftest makefiles can override those targets by setting 151# OVERRIDE_TARGETS = 1. 152ifeq ($(OVERRIDE_TARGETS),) 153LOCAL_HDRS += $(selfdir)/kselftest_harness.h $(selfdir)/kselftest.h 154$(OUTPUT)/%:%.c $(LOCAL_HDRS) 155 $(LINK.c) $(filter-out $(LOCAL_HDRS),$^) $(LDLIBS) -o $@ 156 157$(OUTPUT)/%.o:%.S 158 $(COMPILE.S) $^ -o $@ 159 160$(OUTPUT)/%:%.S 161 $(LINK.S) $^ $(LDLIBS) -o $@ 162endif 163 164.PHONY: run_tests all clean install emit_tests 165