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))))
43top_srcdir = $(selfdir)/../../..
44
45ifeq ($(KHDR_INCLUDES),)
46KHDR_INCLUDES := -isystem $(top_srcdir)/usr/include
47endif
48
49# The following are built by lib.mk common compile rules.
50# TEST_CUSTOM_PROGS should be used by tests that require
51# custom build rule and prevent common build rule use.
52# TEST_PROGS are for test shell scripts.
53# TEST_CUSTOM_PROGS and TEST_PROGS will be run by common run_tests
54# and install targets. Common clean doesn't touch them.
55TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS))
56TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED))
57TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES))
58
59all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES)
60
61define RUN_TESTS
62	BASE_DIR="$(selfdir)";			\
63	. $(selfdir)/kselftest/runner.sh;	\
64	if [ "X$(summary)" != "X" ]; then       \
65		per_test_logging=1;		\
66	fi;                                     \
67	run_many $(1)
68endef
69
70run_tests: all
71ifdef building_out_of_srctree
72	@if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)" != "X" ]; then \
73		rsync -aLq $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(OUTPUT); \
74	fi
75	@if [ "X$(TEST_PROGS)" != "X" ]; then \
76		$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) \
77				  $(addprefix $(OUTPUT)/,$(TEST_PROGS))) ; \
78	else \
79		$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS)); \
80	fi
81else
82	@$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS))
83endif
84
85define INSTALL_SINGLE_RULE
86	$(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH))
87	$(if $(INSTALL_LIST),rsync -aL $(INSTALL_LIST) $(INSTALL_PATH)/)
88endef
89
90define INSTALL_RULE
91	$(eval INSTALL_LIST = $(TEST_PROGS)) $(INSTALL_SINGLE_RULE)
92	$(eval INSTALL_LIST = $(TEST_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE)
93	$(eval INSTALL_LIST = $(TEST_FILES)) $(INSTALL_SINGLE_RULE)
94	$(eval INSTALL_LIST = $(TEST_GEN_PROGS)) $(INSTALL_SINGLE_RULE)
95	$(eval INSTALL_LIST = $(TEST_CUSTOM_PROGS)) $(INSTALL_SINGLE_RULE)
96	$(eval INSTALL_LIST = $(TEST_GEN_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE)
97	$(eval INSTALL_LIST = $(TEST_GEN_FILES)) $(INSTALL_SINGLE_RULE)
98	$(eval INSTALL_LIST = $(wildcard config settings)) $(INSTALL_SINGLE_RULE)
99endef
100
101install: all
102ifdef INSTALL_PATH
103	$(INSTALL_RULE)
104else
105	$(error Error: set INSTALL_PATH to use install)
106endif
107
108emit_tests:
109	for TEST in $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS); do \
110		BASENAME_TEST=`basename $$TEST`;	\
111		echo "$(COLLECTION):$$BASENAME_TEST";	\
112	done
113
114# define if isn't already. It is undefined in make O= case.
115ifeq ($(RM),)
116RM := rm -f
117endif
118
119define CLEAN
120	$(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN)
121endef
122
123clean:
124	$(CLEAN)
125
126# Enables to extend CFLAGS and LDFLAGS from command line, e.g.
127# make USERCFLAGS=-Werror USERLDFLAGS=-static
128CFLAGS += $(USERCFLAGS)
129LDFLAGS += $(USERLDFLAGS)
130
131# When make O= with kselftest target from main level
132# the following aren't defined.
133#
134ifdef building_out_of_srctree
135LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
136COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
137LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
138endif
139
140# Selftest makefiles can override those targets by setting
141# OVERRIDE_TARGETS = 1.
142ifeq ($(OVERRIDE_TARGETS),)
143LOCAL_HDRS += $(selfdir)/kselftest_harness.h $(selfdir)/kselftest.h
144$(OUTPUT)/%:%.c $(LOCAL_HDRS)
145	$(LINK.c) $(filter-out $(LOCAL_HDRS),$^) $(LDLIBS) -o $@
146
147$(OUTPUT)/%.o:%.S
148	$(COMPILE.S) $^ -o $@
149
150$(OUTPUT)/%:%.S
151	$(LINK.S) $^ $(LDLIBS) -o $@
152endif
153
154.PHONY: run_tests all clean install emit_tests
155