lib.mk (6090B)
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_m68k := m68k-linux-gnu 14CLANG_TARGET_FLAGS_mips := mipsel-linux-gnu 15CLANG_TARGET_FLAGS_powerpc := powerpc64le-linux-gnu 16CLANG_TARGET_FLAGS_riscv := riscv64-linux-gnu 17CLANG_TARGET_FLAGS_s390 := s390x-linux-gnu 18CLANG_TARGET_FLAGS_x86 := x86_64-linux-gnu 19CLANG_TARGET_FLAGS := $(CLANG_TARGET_FLAGS_$(ARCH)) 20 21ifeq ($(CROSS_COMPILE),) 22ifeq ($(CLANG_TARGET_FLAGS),) 23$(error Specify CROSS_COMPILE or add '--target=' option to lib.mk 24else 25CLANG_FLAGS += --target=$(CLANG_TARGET_FLAGS) 26endif # CLANG_TARGET_FLAGS 27else 28CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%)) 29endif # CROSS_COMPILE 30 31CC := $(LLVM_PREFIX)clang$(LLVM_SUFFIX) $(CLANG_FLAGS) -fintegrated-as 32else 33CC := $(CROSS_COMPILE)gcc 34endif # LLVM 35 36ifeq (0,$(MAKELEVEL)) 37 ifeq ($(OUTPUT),) 38 OUTPUT := $(shell pwd) 39 DEFAULT_INSTALL_HDR_PATH := 1 40 endif 41endif 42selfdir = $(realpath $(dir $(filter %/lib.mk,$(MAKEFILE_LIST)))) 43 44# The following are built by lib.mk common compile rules. 45# TEST_CUSTOM_PROGS should be used by tests that require 46# custom build rule and prevent common build rule use. 47# TEST_PROGS are for test shell scripts. 48# TEST_CUSTOM_PROGS and TEST_PROGS will be run by common run_tests 49# and install targets. Common clean doesn't touch them. 50TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS)) 51TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED)) 52TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES)) 53 54ifdef KSFT_KHDR_INSTALL 55top_srcdir ?= ../../../.. 56include $(top_srcdir)/scripts/subarch.include 57ARCH ?= $(SUBARCH) 58 59# set default goal to all, so make without a target runs all, even when 60# all isn't the first target in the file. 61.DEFAULT_GOAL := all 62 63# Invoke headers install with --no-builtin-rules to avoid circular 64# dependency in "make kselftest" case. In this case, second level 65# make inherits builtin-rules which will use the rule generate 66# Makefile.o and runs into 67# "Circular Makefile.o <- prepare dependency dropped." 68# and headers_install fails and test compile fails. 69# O= KBUILD_OUTPUT cases don't run into this error, since main Makefile 70# invokes them as sub-makes and --no-builtin-rules is not necessary, 71# but doesn't cause any failures. Keep it simple and use the same 72# flags in both cases. 73# Note that the support to install headers from lib.mk is necessary 74# when test Makefile is run directly with "make -C". 75# When local build is done, headers are installed in the default 76# INSTALL_HDR_PATH usr/include. 77.PHONY: khdr 78.NOTPARALLEL: 79khdr: 80ifndef KSFT_KHDR_INSTALL_DONE 81ifeq (1,$(DEFAULT_INSTALL_HDR_PATH)) 82 $(MAKE) --no-builtin-rules ARCH=$(ARCH) -C $(top_srcdir) headers_install 83else 84 $(MAKE) --no-builtin-rules INSTALL_HDR_PATH=$$OUTPUT/usr \ 85 ARCH=$(ARCH) -C $(top_srcdir) headers_install 86endif 87endif 88 89all: khdr $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) 90else 91all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) 92endif 93 94define RUN_TESTS 95 BASE_DIR="$(selfdir)"; \ 96 . $(selfdir)/kselftest/runner.sh; \ 97 if [ "X$(summary)" != "X" ]; then \ 98 per_test_logging=1; \ 99 fi; \ 100 run_many $(1) 101endef 102 103run_tests: all 104ifdef building_out_of_srctree 105 @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)" != "X" ]; then \ 106 rsync -aq $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(OUTPUT); \ 107 fi 108 @if [ "X$(TEST_PROGS)" != "X" ]; then \ 109 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) \ 110 $(addprefix $(OUTPUT)/,$(TEST_PROGS))) ; \ 111 else \ 112 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS)); \ 113 fi 114else 115 @$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS)) 116endif 117 118define INSTALL_SINGLE_RULE 119 $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH)) 120 $(if $(INSTALL_LIST),rsync -a $(INSTALL_LIST) $(INSTALL_PATH)/) 121endef 122 123define INSTALL_RULE 124 $(eval INSTALL_LIST = $(TEST_PROGS)) $(INSTALL_SINGLE_RULE) 125 $(eval INSTALL_LIST = $(TEST_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE) 126 $(eval INSTALL_LIST = $(TEST_FILES)) $(INSTALL_SINGLE_RULE) 127 $(eval INSTALL_LIST = $(TEST_GEN_PROGS)) $(INSTALL_SINGLE_RULE) 128 $(eval INSTALL_LIST = $(TEST_CUSTOM_PROGS)) $(INSTALL_SINGLE_RULE) 129 $(eval INSTALL_LIST = $(TEST_GEN_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE) 130 $(eval INSTALL_LIST = $(TEST_GEN_FILES)) $(INSTALL_SINGLE_RULE) 131 $(eval INSTALL_LIST = $(wildcard config settings)) $(INSTALL_SINGLE_RULE) 132endef 133 134install: all 135ifdef INSTALL_PATH 136 $(INSTALL_RULE) 137else 138 $(error Error: set INSTALL_PATH to use install) 139endif 140 141emit_tests: 142 for TEST in $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS); do \ 143 BASENAME_TEST=`basename $$TEST`; \ 144 echo "$(COLLECTION):$$BASENAME_TEST"; \ 145 done 146 147# define if isn't already. It is undefined in make O= case. 148ifeq ($(RM),) 149RM := rm -f 150endif 151 152define CLEAN 153 $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN) 154endef 155 156clean: 157 $(CLEAN) 158 159# When make O= with kselftest target from main level 160# the following aren't defined. 161# 162ifdef building_out_of_srctree 163LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) 164COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c 165LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) 166endif 167 168# Selftest makefiles can override those targets by setting 169# OVERRIDE_TARGETS = 1. 170ifeq ($(OVERRIDE_TARGETS),) 171LOCAL_HDRS += $(selfdir)/kselftest_harness.h $(selfdir)/kselftest.h 172$(OUTPUT)/%:%.c $(LOCAL_HDRS) 173 $(LINK.c) $(filter-out $(LOCAL_HDRS),$^) $(LDLIBS) -o $@ 174 175$(OUTPUT)/%.o:%.S 176 $(COMPILE.S) $^ -o $@ 177 178$(OUTPUT)/%:%.S 179 $(LINK.S) $^ $(LDLIBS) -o $@ 180endif 181 182.PHONY: run_tests all clean install emit_tests