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 = $(selfdir)/../../..
 46
 47ifeq ($(KHDR_INCLUDES),)
 48KHDR_INCLUDES := -isystem $(top_srcdir)/usr/include
 49endif
 50
 51# The following are built by lib.mk common compile rules.
 52# TEST_CUSTOM_PROGS should be used by tests that require
 53# custom build rule and prevent common build rule use.
 54# TEST_PROGS are for test shell scripts.
 55# TEST_CUSTOM_PROGS and TEST_PROGS will be run by common run_tests
 56# and install targets. Common clean doesn't touch them.
 57TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS))
 58TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED))
 59TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES))
 60
 61all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES)
 62
 63define RUN_TESTS
 64	BASE_DIR="$(selfdir)";			\
 65	. $(selfdir)/kselftest/runner.sh;	\
 66	if [ "X$(summary)" != "X" ]; then       \
 67		per_test_logging=1;		\
 68	fi;                                     \
 69	run_many $(1)
 70endef
 71
 72run_tests: all
 73ifdef building_out_of_srctree
 74	@if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)" != "X" ]; then \
 75		rsync -aq --copy-unsafe-links $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(OUTPUT); \
 76	fi
 77	@if [ "X$(TEST_PROGS)" != "X" ]; then \
 78		$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) \
 79				  $(addprefix $(OUTPUT)/,$(TEST_PROGS))) ; \
 80	else \
 81		$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS)); \
 82	fi
 83else
 84	@$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS))
 85endif
 86
 87define INSTALL_SINGLE_RULE
 88	$(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH))
 89	$(if $(INSTALL_LIST),rsync -a --copy-unsafe-links $(INSTALL_LIST) $(INSTALL_PATH)/)
 90endef
 91
 92define INSTALL_RULE
 93	$(eval INSTALL_LIST = $(TEST_PROGS)) $(INSTALL_SINGLE_RULE)
 94	$(eval INSTALL_LIST = $(TEST_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE)
 95	$(eval INSTALL_LIST = $(TEST_FILES)) $(INSTALL_SINGLE_RULE)
 96	$(eval INSTALL_LIST = $(TEST_GEN_PROGS)) $(INSTALL_SINGLE_RULE)
 97	$(eval INSTALL_LIST = $(TEST_CUSTOM_PROGS)) $(INSTALL_SINGLE_RULE)
 98	$(eval INSTALL_LIST = $(TEST_GEN_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE)
 99	$(eval INSTALL_LIST = $(TEST_GEN_FILES)) $(INSTALL_SINGLE_RULE)
100	$(eval INSTALL_LIST = $(wildcard config settings)) $(INSTALL_SINGLE_RULE)
101endef
102
103install: all
104ifdef INSTALL_PATH
105	$(INSTALL_RULE)
106else
107	$(error Error: set INSTALL_PATH to use install)
108endif
109
110emit_tests:
111	for TEST in $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS); do \
112		BASENAME_TEST=`basename $$TEST`;	\
113		echo "$(COLLECTION):$$BASENAME_TEST";	\
114	done
115
116# define if isn't already. It is undefined in make O= case.
117ifeq ($(RM),)
118RM := rm -f
119endif
120
121define CLEAN
122	$(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN)
123endef
124
125clean:
126	$(CLEAN)
127
128# Enables to extend CFLAGS and LDFLAGS from command line, e.g.
129# make USERCFLAGS=-Werror USERLDFLAGS=-static
130CFLAGS += $(USERCFLAGS)
131LDFLAGS += $(USERLDFLAGS)
132
133# When make O= with kselftest target from main level
134# the following aren't defined.
135#
136ifdef building_out_of_srctree
137LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
138COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
139LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
140endif
141
142# Selftest makefiles can override those targets by setting
143# OVERRIDE_TARGETS = 1.
144ifeq ($(OVERRIDE_TARGETS),)
145LOCAL_HDRS += $(selfdir)/kselftest_harness.h $(selfdir)/kselftest.h
146$(OUTPUT)/%:%.c $(LOCAL_HDRS)
147	$(LINK.c) $(filter-out $(LOCAL_HDRS),$^) $(LDLIBS) -o $@
148
149$(OUTPUT)/%.o:%.S
150	$(COMPILE.S) $^ -o $@
151
152$(OUTPUT)/%:%.S
153	$(LINK.S) $^ $(LDLIBS) -o $@
154endif
155
156.PHONY: run_tests all clean install emit_tests