Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
54all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES)
55
56define RUN_TESTS
57 BASE_DIR="$(selfdir)"; \
58 . $(selfdir)/kselftest/runner.sh; \
59 if [ "X$(summary)" != "X" ]; then \
60 per_test_logging=1; \
61 fi; \
62 run_many $(1)
63endef
64
65run_tests: all
66ifdef building_out_of_srctree
67 @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)" != "X" ]; then \
68 rsync -aq $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(OUTPUT); \
69 fi
70 @if [ "X$(TEST_PROGS)" != "X" ]; then \
71 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) \
72 $(addprefix $(OUTPUT)/,$(TEST_PROGS))) ; \
73 else \
74 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS)); \
75 fi
76else
77 @$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS))
78endif
79
80define INSTALL_SINGLE_RULE
81 $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH))
82 $(if $(INSTALL_LIST),rsync -a $(INSTALL_LIST) $(INSTALL_PATH)/)
83endef
84
85define INSTALL_RULE
86 $(eval INSTALL_LIST = $(TEST_PROGS)) $(INSTALL_SINGLE_RULE)
87 $(eval INSTALL_LIST = $(TEST_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE)
88 $(eval INSTALL_LIST = $(TEST_FILES)) $(INSTALL_SINGLE_RULE)
89 $(eval INSTALL_LIST = $(TEST_GEN_PROGS)) $(INSTALL_SINGLE_RULE)
90 $(eval INSTALL_LIST = $(TEST_CUSTOM_PROGS)) $(INSTALL_SINGLE_RULE)
91 $(eval INSTALL_LIST = $(TEST_GEN_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE)
92 $(eval INSTALL_LIST = $(TEST_GEN_FILES)) $(INSTALL_SINGLE_RULE)
93 $(eval INSTALL_LIST = $(wildcard config settings)) $(INSTALL_SINGLE_RULE)
94endef
95
96install: all
97ifdef INSTALL_PATH
98 $(INSTALL_RULE)
99else
100 $(error Error: set INSTALL_PATH to use install)
101endif
102
103emit_tests:
104 for TEST in $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS); do \
105 BASENAME_TEST=`basename $$TEST`; \
106 echo "$(COLLECTION):$$BASENAME_TEST"; \
107 done
108
109# define if isn't already. It is undefined in make O= case.
110ifeq ($(RM),)
111RM := rm -f
112endif
113
114define CLEAN
115 $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN)
116endef
117
118clean:
119 $(CLEAN)
120
121# When make O= with kselftest target from main level
122# the following aren't defined.
123#
124ifdef building_out_of_srctree
125LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
126COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
127LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
128endif
129
130# Selftest makefiles can override those targets by setting
131# OVERRIDE_TARGETS = 1.
132ifeq ($(OVERRIDE_TARGETS),)
133LOCAL_HDRS += $(selfdir)/kselftest_harness.h $(selfdir)/kselftest.h
134$(OUTPUT)/%:%.c $(LOCAL_HDRS)
135 $(LINK.c) $(filter-out $(LOCAL_HDRS),$^) $(LDLIBS) -o $@
136
137$(OUTPUT)/%.o:%.S
138 $(COMPILE.S) $^ -o $@
139
140$(OUTPUT)/%:%.S
141 $(LINK.S) $^ $(LDLIBS) -o $@
142endif
143
144.PHONY: run_tests all clean install emit_tests