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),)
4CC := clang
5else
6CC := $(CROSS_COMPILE)gcc
7endif
8
9ifeq (0,$(MAKELEVEL))
10 ifeq ($(OUTPUT),)
11 OUTPUT := $(shell pwd)
12 DEFAULT_INSTALL_HDR_PATH := 1
13 endif
14endif
15selfdir = $(realpath $(dir $(filter %/lib.mk,$(MAKEFILE_LIST))))
16
17# The following are built by lib.mk common compile rules.
18# TEST_CUSTOM_PROGS should be used by tests that require
19# custom build rule and prevent common build rule use.
20# TEST_PROGS are for test shell scripts.
21# TEST_CUSTOM_PROGS and TEST_PROGS will be run by common run_tests
22# and install targets. Common clean doesn't touch them.
23TEST_GEN_PROGS := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS))
24TEST_GEN_PROGS_EXTENDED := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_PROGS_EXTENDED))
25TEST_GEN_FILES := $(patsubst %,$(OUTPUT)/%,$(TEST_GEN_FILES))
26
27ifdef KSFT_KHDR_INSTALL
28top_srcdir ?= ../../../..
29include $(top_srcdir)/scripts/subarch.include
30ARCH ?= $(SUBARCH)
31
32# set default goal to all, so make without a target runs all, even when
33# all isn't the first target in the file.
34.DEFAULT_GOAL := all
35
36# Invoke headers install with --no-builtin-rules to avoid circular
37# dependency in "make kselftest" case. In this case, second level
38# make inherits builtin-rules which will use the rule generate
39# Makefile.o and runs into
40# "Circular Makefile.o <- prepare dependency dropped."
41# and headers_install fails and test compile fails.
42# O= KBUILD_OUTPUT cases don't run into this error, since main Makefile
43# invokes them as sub-makes and --no-builtin-rules is not necessary,
44# but doesn't cause any failures. Keep it simple and use the same
45# flags in both cases.
46# Note that the support to install headers from lib.mk is necessary
47# when test Makefile is run directly with "make -C".
48# When local build is done, headers are installed in the default
49# INSTALL_HDR_PATH usr/include.
50.PHONY: khdr
51khdr:
52ifndef KSFT_KHDR_INSTALL_DONE
53ifeq (1,$(DEFAULT_INSTALL_HDR_PATH))
54 $(MAKE) --no-builtin-rules ARCH=$(ARCH) -C $(top_srcdir) headers_install
55else
56 $(MAKE) --no-builtin-rules INSTALL_HDR_PATH=$$OUTPUT/usr \
57 ARCH=$(ARCH) -C $(top_srcdir) headers_install
58endif
59endif
60
61all: khdr $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES)
62else
63all: $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES)
64endif
65
66define RUN_TESTS
67 BASE_DIR="$(selfdir)"; \
68 . $(selfdir)/kselftest/runner.sh; \
69 if [ "X$(summary)" != "X" ]; then \
70 per_test_logging=1; \
71 fi; \
72 run_many $(1)
73endef
74
75run_tests: all
76ifdef building_out_of_srctree
77 @if [ "X$(TEST_PROGS)$(TEST_PROGS_EXTENDED)$(TEST_FILES)" != "X" ]; then \
78 rsync -aq $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(OUTPUT); \
79 fi
80 @if [ "X$(TEST_PROGS)" != "X" ]; then \
81 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) \
82 $(addprefix $(OUTPUT)/,$(TEST_PROGS))) ; \
83 else \
84 $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS)); \
85 fi
86else
87 @$(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS))
88endif
89
90define INSTALL_SINGLE_RULE
91 $(if $(INSTALL_LIST),@mkdir -p $(INSTALL_PATH))
92 $(if $(INSTALL_LIST),rsync -a $(INSTALL_LIST) $(INSTALL_PATH)/)
93endef
94
95define INSTALL_RULE
96 $(eval INSTALL_LIST = $(TEST_PROGS)) $(INSTALL_SINGLE_RULE)
97 $(eval INSTALL_LIST = $(TEST_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE)
98 $(eval INSTALL_LIST = $(TEST_FILES)) $(INSTALL_SINGLE_RULE)
99 $(eval INSTALL_LIST = $(TEST_GEN_PROGS)) $(INSTALL_SINGLE_RULE)
100 $(eval INSTALL_LIST = $(TEST_CUSTOM_PROGS)) $(INSTALL_SINGLE_RULE)
101 $(eval INSTALL_LIST = $(TEST_GEN_PROGS_EXTENDED)) $(INSTALL_SINGLE_RULE)
102 $(eval INSTALL_LIST = $(TEST_GEN_FILES)) $(INSTALL_SINGLE_RULE)
103endef
104
105install: all
106ifdef INSTALL_PATH
107 $(INSTALL_RULE)
108else
109 $(error Error: set INSTALL_PATH to use install)
110endif
111
112emit_tests:
113 for TEST in $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(TEST_PROGS); do \
114 BASENAME_TEST=`basename $$TEST`; \
115 echo "$(COLLECTION):$$BASENAME_TEST"; \
116 done
117
118# define if isn't already. It is undefined in make O= case.
119ifeq ($(RM),)
120RM := rm -f
121endif
122
123define CLEAN
124 $(RM) -r $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED) $(TEST_GEN_FILES) $(EXTRA_CLEAN)
125endef
126
127clean:
128 $(CLEAN)
129
130# When make O= with kselftest target from main level
131# the following aren't defined.
132#
133ifdef building_out_of_srctree
134LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
135COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
136LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
137endif
138
139# Selftest makefiles can override those targets by setting
140# OVERRIDE_TARGETS = 1.
141ifeq ($(OVERRIDE_TARGETS),)
142LOCAL_HDRS := $(selfdir)/kselftest_harness.h $(selfdir)/kselftest.h
143$(OUTPUT)/%:%.c $(LOCAL_HDRS)
144 $(LINK.c) $(filter-out $(LOCAL_HDRS),$^) $(LDLIBS) -o $@
145
146$(OUTPUT)/%.o:%.S
147 $(COMPILE.S) $^ -o $@
148
149$(OUTPUT)/%:%.S
150 $(LINK.S) $^ $(LDLIBS) -o $@
151endif
152
153.PHONY: run_tests all clean install emit_tests