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1da177e4
LT
1#
2# Makefile for the linux kernel.
3#
4
b9ee979e 5obj-y = fork.o exec_domain.o panic.o \
68f4f1ec 6 cpu.o exit.o itimer.o time.o softirq.o resource.o \
afa588b2 7 sysctl.o sysctl_binary.o capability.o ptrace.o timer.o user.o \
e73f8959 8 signal.o sys.o kmod.o workqueue.o pid.o task_work.o \
4102adab 9 extable.o params.o posix-timers.o \
01768b42 10 kthread.o sys_ni.o posix-cpu-timers.o \
ed428bfc 11 hrtimer.o nsproxy.o \
15d94b82 12 notifier.o ksysfs.o cred.o reboot.o \
cd4d241d 13 async.o range.o groups.o smpboot.o
029632fb 14
606576ce 15ifdef CONFIG_FUNCTION_TRACER
6ec56232 16# Do not trace debug files and internal ftrace files
6ec56232 17CFLAGS_REMOVE_cgroup-debug.o = -pg
e360adbe 18CFLAGS_REMOVE_irq_work.o = -pg
1d09daa5
SR
19endif
20
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21# cond_syscall is currently not LTO compatible
22CFLAGS_sys_ni.o = $(DISABLE_LTO)
23
391e43da 24obj-y += sched/
01768b42 25obj-y += locking/
dae5cbc2 26obj-y += power/
b9ee979e 27obj-y += printk/
0244ad00 28obj-y += irq/
4102adab 29obj-y += rcu/
391e43da 30
1e142b29 31obj-$(CONFIG_CHECKPOINT_RESTORE) += kcmp.o
8174f150 32obj-$(CONFIG_FREEZER) += freezer.o
b03f6489 33obj-$(CONFIG_PROFILING) += profile.o
8637c099 34obj-$(CONFIG_STACKTRACE) += stacktrace.o
ad596171 35obj-y += time/
1da177e4 36obj-$(CONFIG_FUTEX) += futex.o
34f192c6
IM
37ifeq ($(CONFIG_COMPAT),y)
38obj-$(CONFIG_FUTEX) += futex_compat.o
39endif
1da177e4 40obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o
351f8f8e 41obj-$(CONFIG_SMP) += smp.o
9316fcac 42ifneq ($(CONFIG_SMP),y)
53ce3d95
AM
43obj-y += up.o
44endif
1da177e4 45obj-$(CONFIG_UID16) += uid16.o
b56e5a17 46obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o
1da177e4 47obj-$(CONFIG_MODULES) += module.o
b56e5a17 48obj-$(CONFIG_MODULE_SIG) += module_signing.o
1da177e4 49obj-$(CONFIG_KALLSYMS) += kallsyms.o
1da177e4 50obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o
dc009d92 51obj-$(CONFIG_KEXEC) += kexec.o
6dab2778 52obj-$(CONFIG_BACKTRACE_SELF_TEST) += backtracetest.o
1da177e4 53obj-$(CONFIG_COMPAT) += compat.o
ddbcc7e8 54obj-$(CONFIG_CGROUPS) += cgroup.o
dc52ddc0 55obj-$(CONFIG_CGROUP_FREEZER) += cgroup_freezer.o
1da177e4 56obj-$(CONFIG_CPUSETS) += cpuset.o
aee16ce7
PE
57obj-$(CONFIG_UTS_NS) += utsname.o
58obj-$(CONFIG_USER_NS) += user_namespace.o
74bd59bb 59obj-$(CONFIG_PID_NS) += pid_namespace.o
1da177e4 60obj-$(CONFIG_IKCONFIG) += configs.o
e552b661 61obj-$(CONFIG_RESOURCE_COUNTERS) += res_counter.o
bbf1bb3e 62obj-$(CONFIG_SMP) += stop_machine.o
8c1c9356 63obj-$(CONFIG_KPROBES_SANITY_TEST) += test_kprobes.o
939a67fc 64obj-$(CONFIG_AUDIT) += audit.o auditfilter.o
1da177e4 65obj-$(CONFIG_AUDITSYSCALL) += auditsc.o
939a67fc 66obj-$(CONFIG_AUDIT_WATCH) += audit_watch.o
74c3cbe3 67obj-$(CONFIG_AUDIT_TREE) += audit_tree.o
939a67fc 68obj-$(CONFIG_GCOV_KERNEL) += gcov/
1da177e4 69obj-$(CONFIG_KPROBES) += kprobes.o
c4338209 70obj-$(CONFIG_KGDB) += debug/
e162b39a 71obj-$(CONFIG_DETECT_HUNG_TASK) += hung_task.o
58687acb 72obj-$(CONFIG_LOCKUP_DETECTOR) += watchdog.o
1da177e4 73obj-$(CONFIG_SECCOMP) += seccomp.o
b86ff981 74obj-$(CONFIG_RELAY) += relay.o
39732acd 75obj-$(CONFIG_SYSCTL) += utsname_sysctl.o
ca74e92b 76obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o
f3cef7a9 77obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o
97e1c18e 78obj-$(CONFIG_TRACEPOINTS) += tracepoint.o
9745512c 79obj-$(CONFIG_LATENCYTOP) += latencytop.o
1fcccbac
DH
80obj-$(CONFIG_BINFMT_ELF) += elfcore.o
81obj-$(CONFIG_COMPAT_BINFMT_ELF) += elfcore.o
82obj-$(CONFIG_BINFMT_ELF_FDPIC) += elfcore.o
606576ce 83obj-$(CONFIG_FUNCTION_TRACER) += trace/
bc0c38d1 84obj-$(CONFIG_TRACING) += trace/
ea632e9f 85obj-$(CONFIG_TRACE_CLOCK) += trace/
1155de47 86obj-$(CONFIG_RING_BUFFER) += trace/
870915e0 87obj-$(CONFIG_TRACEPOINTS) += trace/
e360adbe 88obj-$(CONFIG_IRQ_WORK) += irq_work.o
ab10023e 89obj-$(CONFIG_CPU_PM) += cpu_pm.o
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BP
90
91obj-$(CONFIG_PERF_EVENTS) += events/
92
7a041097 93obj-$(CONFIG_USER_RETURN_NOTIFIER) += user-return-notifier.o
16295bec 94obj-$(CONFIG_PADATA) += padata.o
93a72052 95obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
b77f0f3c 96obj-$(CONFIG_JUMP_LABEL) += jump_label.o
91d1aa43 97obj-$(CONFIG_CONTEXT_TRACKING) += context_tracking.o
51b1130e 98obj-$(CONFIG_TORTURE_TEST) += torture.o
1da177e4 99
1da177e4
LT
100$(obj)/configs.o: $(obj)/config_data.h
101
102# config_data.h contains the same information as ikconfig.h but gzipped.
103# Info from config_data can be extracted from /proc/config*
104targets += config_data.gz
41263fc6 105$(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE
1da177e4
LT
106 $(call if_changed,gzip)
107
e78e8f2d 108 filechk_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/bin2c; echo "MAGIC_END;")
1da177e4
LT
109targets += config_data.h
110$(obj)/config_data.h: $(obj)/config_data.gz FORCE
e78e8f2d 111 $(call filechk,ikconfiggz)
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PA
112
113$(obj)/time.o: $(obj)/timeconst.h
114
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PA
115quiet_cmd_hzfile = HZFILE $@
116 cmd_hzfile = echo "hz=$(CONFIG_HZ)" > $@
117
118targets += hz.bc
119$(obj)/hz.bc: $(objtree)/include/config/hz.h FORCE
120 $(call if_changed,hzfile)
121
122quiet_cmd_bc = BC $@
123 cmd_bc = bc -q $(filter-out FORCE,$^) > $@
124
bdc80787 125targets += timeconst.h
70730bca
PA
126$(obj)/timeconst.h: $(obj)/hz.bc $(src)/timeconst.bc FORCE
127 $(call if_changed,bc)
d441108c 128
f0e6d220 129###############################################################################
631cc66e 130#
0fbd39cf 131# Roll all the X.509 certificates that we can find together and pull them into
b56e5a17
DH
132# the kernel so that they get loaded into the system trusted keyring during
133# boot.
631cc66e 134#
0fbd39cf
DH
135# We look in the source root and the build root for all files whose name ends
136# in ".x509". Unfortunately, this will generate duplicate filenames, so we
137# have make canonicalise the pathnames and then sort them to discard the
138# duplicates.
631cc66e 139#
f0e6d220 140###############################################################################
b56e5a17 141ifeq ($(CONFIG_SYSTEM_TRUSTED_KEYRING),y)
f0e6d220 142X509_CERTIFICATES-y := $(wildcard *.x509) $(wildcard $(srctree)/*.x509)
d7ec435f
DH
143X509_CERTIFICATES-$(CONFIG_MODULE_SIG) += $(objtree)/signing_key.x509
144X509_CERTIFICATES-raw := $(sort $(foreach CERT,$(X509_CERTIFICATES-y), \
0fbd39cf 145 $(or $(realpath $(CERT)),$(CERT))))
d7ec435f 146X509_CERTIFICATES := $(subst $(realpath $(objtree))/,,$(X509_CERTIFICATES-raw))
f0e6d220
DH
147
148ifeq ($(X509_CERTIFICATES),)
149$(warning *** No X.509 certificates found ***)
150endif
151
152ifneq ($(wildcard $(obj)/.x509.list),)
153ifneq ($(shell cat $(obj)/.x509.list),$(X509_CERTIFICATES))
154$(info X.509 certificate list changed)
155$(shell rm $(obj)/.x509.list)
156endif
157endif
158
b56e5a17 159kernel/system_certificates.o: $(obj)/x509_certificate_list
e10e1774 160
f0e6d220 161quiet_cmd_x509certs = CERTS $@
b56e5a17 162 cmd_x509certs = cat $(X509_CERTIFICATES) /dev/null >$@ $(foreach X509,$(X509_CERTIFICATES),; echo " - Including cert $(X509)")
e10e1774 163
f0e6d220
DH
164targets += $(obj)/x509_certificate_list
165$(obj)/x509_certificate_list: $(X509_CERTIFICATES) $(obj)/.x509.list
166 $(call if_changed,x509certs)
631cc66e 167
f0e6d220
DH
168targets += $(obj)/.x509.list
169$(obj)/.x509.list:
170 @echo $(X509_CERTIFICATES) >$@
f46a3cbb 171endif
d441108c 172
f0e6d220 173clean-files := x509_certificate_list .x509.list
d441108c 174
b56e5a17 175ifeq ($(CONFIG_MODULE_SIG),y)
d441108c
DH
176###############################################################################
177#
178# If module signing is requested, say by allyesconfig, but a key has not been
179# supplied, then one will need to be generated to make sure the build does not
180# fail and that the kernel may be used afterwards.
181#
182###############################################################################
22753674 183ifndef CONFIG_MODULE_SIG_HASH
5e8cb1e4
DH
184$(error Could not determine digest type to use from kernel config)
185endif
186
d441108c
DH
187signing_key.priv signing_key.x509: x509.genkey
188 @echo "###"
189 @echo "### Now generating an X.509 key pair to be used for signing modules."
190 @echo "###"
191 @echo "### If this takes a long time, you might wish to run rngd in the"
192 @echo "### background to keep the supply of entropy topped up. It"
2008713c
PA
193 @echo "### needs to be run as root, and uses a hardware random"
194 @echo "### number generator if one is available."
d441108c 195 @echo "###"
22753674
MM
196 openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500 \
197 -batch -x509 -config x509.genkey \
d441108c 198 -outform DER -out signing_key.x509 \
07c449bb 199 -keyout signing_key.priv 2>&1
d441108c
DH
200 @echo "###"
201 @echo "### Key pair generated."
202 @echo "###"
203
204x509.genkey:
205 @echo Generating X.509 key generation config
206 @echo >x509.genkey "[ req ]"
207 @echo >>x509.genkey "default_bits = 4096"
208 @echo >>x509.genkey "distinguished_name = req_distinguished_name"
209 @echo >>x509.genkey "prompt = no"
e7d113bc 210 @echo >>x509.genkey "string_mask = utf8only"
d441108c
DH
211 @echo >>x509.genkey "x509_extensions = myexts"
212 @echo >>x509.genkey
213 @echo >>x509.genkey "[ req_distinguished_name ]"
214 @echo >>x509.genkey "O = Magrathea"
215 @echo >>x509.genkey "CN = Glacier signing key"
216 @echo >>x509.genkey "emailAddress = slartibartfast@magrathea.h2g2"
217 @echo >>x509.genkey
218 @echo >>x509.genkey "[ myexts ]"
219 @echo >>x509.genkey "basicConstraints=critical,CA:FALSE"
220 @echo >>x509.genkey "keyUsage=digitalSignature"
221 @echo >>x509.genkey "subjectKeyIdentifier=hash"
222 @echo >>x509.genkey "authorityKeyIdentifier=keyid"
223endif