xref: /openbmc/linux/kernel/Makefile (revision 078a55fc) 
1#
2# Makefile for the linux kernel.
3#
4
5obj-y     = fork.o exec_domain.o panic.o printk.o \
6	    cpu.o exit.o itimer.o time.o softirq.o resource.o \
7	    sysctl.o sysctl_binary.o capability.o ptrace.o timer.o user.o \
8	    signal.o sys.o kmod.o workqueue.o pid.o task_work.o \
9	    rcupdate.o extable.o params.o posix-timers.o \
10	    kthread.o wait.o sys_ni.o posix-cpu-timers.o mutex.o \
11	    hrtimer.o rwsem.o nsproxy.o srcu.o semaphore.o \
12	    notifier.o ksysfs.o cred.o reboot.o \
13	    async.o range.o groups.o lglock.o smpboot.o
14
15ifdef CONFIG_FUNCTION_TRACER
16# Do not trace debug files and internal ftrace files
17CFLAGS_REMOVE_lockdep.o = -pg
18CFLAGS_REMOVE_lockdep_proc.o = -pg
19CFLAGS_REMOVE_mutex-debug.o = -pg
20CFLAGS_REMOVE_rtmutex-debug.o = -pg
21CFLAGS_REMOVE_cgroup-debug.o = -pg
22CFLAGS_REMOVE_irq_work.o = -pg
23endif
24
25obj-y += sched/
26obj-y += power/
27obj-y += cpu/
28
29obj-$(CONFIG_CHECKPOINT_RESTORE) += kcmp.o
30obj-$(CONFIG_FREEZER) += freezer.o
31obj-$(CONFIG_PROFILING) += profile.o
32obj-$(CONFIG_STACKTRACE) += stacktrace.o
33obj-y += time/
34obj-$(CONFIG_DEBUG_MUTEXES) += mutex-debug.o
35obj-$(CONFIG_LOCKDEP) += lockdep.o
36ifeq ($(CONFIG_PROC_FS),y)
37obj-$(CONFIG_LOCKDEP) += lockdep_proc.o
38endif
39obj-$(CONFIG_FUTEX) += futex.o
40ifeq ($(CONFIG_COMPAT),y)
41obj-$(CONFIG_FUTEX) += futex_compat.o
42endif
43obj-$(CONFIG_RT_MUTEXES) += rtmutex.o
44obj-$(CONFIG_DEBUG_RT_MUTEXES) += rtmutex-debug.o
45obj-$(CONFIG_RT_MUTEX_TESTER) += rtmutex-tester.o
46obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o
47obj-$(CONFIG_SMP) += smp.o
48ifneq ($(CONFIG_SMP),y)
49obj-y += up.o
50endif
51obj-$(CONFIG_SMP) += spinlock.o
52obj-$(CONFIG_DEBUG_SPINLOCK) += spinlock.o
53obj-$(CONFIG_PROVE_LOCKING) += spinlock.o
54obj-$(CONFIG_UID16) += uid16.o
55obj-$(CONFIG_MODULES) += module.o
56obj-$(CONFIG_MODULE_SIG) += module_signing.o modsign_pubkey.o modsign_certificate.o
57obj-$(CONFIG_KALLSYMS) += kallsyms.o
58obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o
59obj-$(CONFIG_KEXEC) += kexec.o
60obj-$(CONFIG_BACKTRACE_SELF_TEST) += backtracetest.o
61obj-$(CONFIG_COMPAT) += compat.o
62obj-$(CONFIG_CGROUPS) += cgroup.o
63obj-$(CONFIG_CGROUP_FREEZER) += cgroup_freezer.o
64obj-$(CONFIG_CPUSETS) += cpuset.o
65obj-$(CONFIG_UTS_NS) += utsname.o
66obj-$(CONFIG_USER_NS) += user_namespace.o
67obj-$(CONFIG_PID_NS) += pid_namespace.o
68obj-$(CONFIG_IKCONFIG) += configs.o
69obj-$(CONFIG_RESOURCE_COUNTERS) += res_counter.o
70obj-$(CONFIG_SMP) += stop_machine.o
71obj-$(CONFIG_KPROBES_SANITY_TEST) += test_kprobes.o
72obj-$(CONFIG_AUDIT) += audit.o auditfilter.o
73obj-$(CONFIG_AUDITSYSCALL) += auditsc.o
74obj-$(CONFIG_AUDIT_WATCH) += audit_watch.o
75obj-$(CONFIG_AUDIT_TREE) += audit_tree.o
76obj-$(CONFIG_GCOV_KERNEL) += gcov/
77obj-$(CONFIG_KPROBES) += kprobes.o
78obj-$(CONFIG_KGDB) += debug/
79obj-$(CONFIG_DETECT_HUNG_TASK) += hung_task.o
80obj-$(CONFIG_LOCKUP_DETECTOR) += watchdog.o
81obj-$(CONFIG_GENERIC_HARDIRQS) += irq/
82obj-$(CONFIG_SECCOMP) += seccomp.o
83obj-$(CONFIG_RCU_TORTURE_TEST) += rcutorture.o
84obj-$(CONFIG_TREE_RCU) += rcutree.o
85obj-$(CONFIG_TREE_PREEMPT_RCU) += rcutree.o
86obj-$(CONFIG_TREE_RCU_TRACE) += rcutree_trace.o
87obj-$(CONFIG_TINY_RCU) += rcutiny.o
88obj-$(CONFIG_TINY_PREEMPT_RCU) += rcutiny.o
89obj-$(CONFIG_RELAY) += relay.o
90obj-$(CONFIG_SYSCTL) += utsname_sysctl.o
91obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o
92obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o
93obj-$(CONFIG_TRACEPOINTS) += tracepoint.o
94obj-$(CONFIG_LATENCYTOP) += latencytop.o
95obj-$(CONFIG_BINFMT_ELF) += elfcore.o
96obj-$(CONFIG_COMPAT_BINFMT_ELF) += elfcore.o
97obj-$(CONFIG_BINFMT_ELF_FDPIC) += elfcore.o
98obj-$(CONFIG_FUNCTION_TRACER) += trace/
99obj-$(CONFIG_TRACING) += trace/
100obj-$(CONFIG_TRACE_CLOCK) += trace/
101obj-$(CONFIG_RING_BUFFER) += trace/
102obj-$(CONFIG_TRACEPOINTS) += trace/
103obj-$(CONFIG_IRQ_WORK) += irq_work.o
104obj-$(CONFIG_CPU_PM) += cpu_pm.o
105
106obj-$(CONFIG_PERF_EVENTS) += events/
107
108obj-$(CONFIG_USER_RETURN_NOTIFIER) += user-return-notifier.o
109obj-$(CONFIG_PADATA) += padata.o
110obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
111obj-$(CONFIG_JUMP_LABEL) += jump_label.o
112obj-$(CONFIG_CONTEXT_TRACKING) += context_tracking.o
113
114$(obj)/configs.o: $(obj)/config_data.h
115
116# config_data.h contains the same information as ikconfig.h but gzipped.
117# Info from config_data can be extracted from /proc/config*
118targets += config_data.gz
119$(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE
120	$(call if_changed,gzip)
121
122      filechk_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/bin2c; echo "MAGIC_END;")
123targets += config_data.h
124$(obj)/config_data.h: $(obj)/config_data.gz FORCE
125	$(call filechk,ikconfiggz)
126
127$(obj)/time.o: $(obj)/timeconst.h
128
129quiet_cmd_hzfile = HZFILE  $@
130      cmd_hzfile = echo "hz=$(CONFIG_HZ)" > $@
131
132targets += hz.bc
133$(obj)/hz.bc: $(objtree)/include/config/hz.h FORCE
134	$(call if_changed,hzfile)
135
136quiet_cmd_bc  = BC      $@
137      cmd_bc  = bc -q $(filter-out FORCE,$^) > $@
138
139targets += timeconst.h
140$(obj)/timeconst.h: $(obj)/hz.bc $(src)/timeconst.bc FORCE
141	$(call if_changed,bc)
142
143ifeq ($(CONFIG_MODULE_SIG),y)
144#
145# Pull the signing certificate and any extra certificates into the kernel
146#
147
148quiet_cmd_touch = TOUCH   $@
149      cmd_touch = touch   $@
150
151extra_certificates:
152	$(call cmd,touch)
153
154kernel/modsign_certificate.o: signing_key.x509 extra_certificates
155
156###############################################################################
157#
158# If module signing is requested, say by allyesconfig, but a key has not been
159# supplied, then one will need to be generated to make sure the build does not
160# fail and that the kernel may be used afterwards.
161#
162###############################################################################
163ifndef CONFIG_MODULE_SIG_HASH
164$(error Could not determine digest type to use from kernel config)
165endif
166
167signing_key.priv signing_key.x509: x509.genkey
168	@echo "###"
169	@echo "### Now generating an X.509 key pair to be used for signing modules."
170	@echo "###"
171	@echo "### If this takes a long time, you might wish to run rngd in the"
172	@echo "### background to keep the supply of entropy topped up.  It"
173	@echo "### needs to be run as root, and uses a hardware random"
174	@echo "### number generator if one is available."
175	@echo "###"
176	openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500 \
177		-batch -x509 -config x509.genkey \
178		-outform DER -out signing_key.x509 \
179		-keyout signing_key.priv 2>&1
180	@echo "###"
181	@echo "### Key pair generated."
182	@echo "###"
183
184x509.genkey:
185	@echo Generating X.509 key generation config
186	@echo  >x509.genkey "[ req ]"
187	@echo >>x509.genkey "default_bits = 4096"
188	@echo >>x509.genkey "distinguished_name = req_distinguished_name"
189	@echo >>x509.genkey "prompt = no"
190	@echo >>x509.genkey "string_mask = utf8only"
191	@echo >>x509.genkey "x509_extensions = myexts"
192	@echo >>x509.genkey
193	@echo >>x509.genkey "[ req_distinguished_name ]"
194	@echo >>x509.genkey "O = Magrathea"
195	@echo >>x509.genkey "CN = Glacier signing key"
196	@echo >>x509.genkey "emailAddress = slartibartfast@magrathea.h2g2"
197	@echo >>x509.genkey
198	@echo >>x509.genkey "[ myexts ]"
199	@echo >>x509.genkey "basicConstraints=critical,CA:FALSE"
200	@echo >>x509.genkey "keyUsage=digitalSignature"
201	@echo >>x509.genkey "subjectKeyIdentifier=hash"
202	@echo >>x509.genkey "authorityKeyIdentifier=keyid"
203endif
204