xref: /openbmc/linux/kernel/Makefile (revision 161f4089) 
1#
2# Makefile for the linux kernel.
3#
4
5obj-y     = fork.o exec_domain.o panic.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	    extable.o params.o posix-timers.o \
10	    kthread.o sys_ni.o posix-cpu-timers.o mutex.o \
11	    hrtimer.o rwsem.o nsproxy.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 += printk/
28obj-y += cpu/
29obj-y += irq/
30obj-y += rcu/
31
32obj-$(CONFIG_CHECKPOINT_RESTORE) += kcmp.o
33obj-$(CONFIG_FREEZER) += freezer.o
34obj-$(CONFIG_PROFILING) += profile.o
35obj-$(CONFIG_STACKTRACE) += stacktrace.o
36obj-y += time/
37obj-$(CONFIG_DEBUG_MUTEXES) += mutex-debug.o
38obj-$(CONFIG_LOCKDEP) += lockdep.o
39ifeq ($(CONFIG_PROC_FS),y)
40obj-$(CONFIG_LOCKDEP) += lockdep_proc.o
41endif
42obj-$(CONFIG_FUTEX) += futex.o
43ifeq ($(CONFIG_COMPAT),y)
44obj-$(CONFIG_FUTEX) += futex_compat.o
45endif
46obj-$(CONFIG_RT_MUTEXES) += rtmutex.o
47obj-$(CONFIG_DEBUG_RT_MUTEXES) += rtmutex-debug.o
48obj-$(CONFIG_RT_MUTEX_TESTER) += rtmutex-tester.o
49obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o
50obj-$(CONFIG_SMP) += smp.o
51ifneq ($(CONFIG_SMP),y)
52obj-y += up.o
53endif
54obj-$(CONFIG_SMP) += spinlock.o
55obj-$(CONFIG_DEBUG_SPINLOCK) += spinlock.o
56obj-$(CONFIG_PROVE_LOCKING) += spinlock.o
57obj-$(CONFIG_UID16) += uid16.o
58obj-$(CONFIG_MODULES) += module.o
59obj-$(CONFIG_MODULE_SIG) += module_signing.o modsign_pubkey.o modsign_certificate.o
60obj-$(CONFIG_KALLSYMS) += kallsyms.o
61obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o
62obj-$(CONFIG_KEXEC) += kexec.o
63obj-$(CONFIG_BACKTRACE_SELF_TEST) += backtracetest.o
64obj-$(CONFIG_COMPAT) += compat.o
65obj-$(CONFIG_CGROUPS) += cgroup.o
66obj-$(CONFIG_CGROUP_FREEZER) += cgroup_freezer.o
67obj-$(CONFIG_CPUSETS) += cpuset.o
68obj-$(CONFIG_UTS_NS) += utsname.o
69obj-$(CONFIG_USER_NS) += user_namespace.o
70obj-$(CONFIG_PID_NS) += pid_namespace.o
71obj-$(CONFIG_IKCONFIG) += configs.o
72obj-$(CONFIG_RESOURCE_COUNTERS) += res_counter.o
73obj-$(CONFIG_SMP) += stop_machine.o
74obj-$(CONFIG_KPROBES_SANITY_TEST) += test_kprobes.o
75obj-$(CONFIG_AUDIT) += audit.o auditfilter.o
76obj-$(CONFIG_AUDITSYSCALL) += auditsc.o
77obj-$(CONFIG_AUDIT_WATCH) += audit_watch.o
78obj-$(CONFIG_AUDIT_TREE) += audit_tree.o
79obj-$(CONFIG_GCOV_KERNEL) += gcov/
80obj-$(CONFIG_KPROBES) += kprobes.o
81obj-$(CONFIG_KGDB) += debug/
82obj-$(CONFIG_DETECT_HUNG_TASK) += hung_task.o
83obj-$(CONFIG_LOCKUP_DETECTOR) += watchdog.o
84obj-$(CONFIG_SECCOMP) += seccomp.o
85obj-$(CONFIG_RELAY) += relay.o
86obj-$(CONFIG_SYSCTL) += utsname_sysctl.o
87obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o
88obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o
89obj-$(CONFIG_TRACEPOINTS) += tracepoint.o
90obj-$(CONFIG_LATENCYTOP) += latencytop.o
91obj-$(CONFIG_BINFMT_ELF) += elfcore.o
92obj-$(CONFIG_COMPAT_BINFMT_ELF) += elfcore.o
93obj-$(CONFIG_BINFMT_ELF_FDPIC) += elfcore.o
94obj-$(CONFIG_FUNCTION_TRACER) += trace/
95obj-$(CONFIG_TRACING) += trace/
96obj-$(CONFIG_TRACE_CLOCK) += trace/
97obj-$(CONFIG_RING_BUFFER) += trace/
98obj-$(CONFIG_TRACEPOINTS) += trace/
99obj-$(CONFIG_IRQ_WORK) += irq_work.o
100obj-$(CONFIG_CPU_PM) += cpu_pm.o
101
102obj-$(CONFIG_PERF_EVENTS) += events/
103
104obj-$(CONFIG_USER_RETURN_NOTIFIER) += user-return-notifier.o
105obj-$(CONFIG_PADATA) += padata.o
106obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
107obj-$(CONFIG_JUMP_LABEL) += jump_label.o
108obj-$(CONFIG_CONTEXT_TRACKING) += context_tracking.o
109
110$(obj)/configs.o: $(obj)/config_data.h
111
112# config_data.h contains the same information as ikconfig.h but gzipped.
113# Info from config_data can be extracted from /proc/config*
114targets += config_data.gz
115$(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE
116	$(call if_changed,gzip)
117
118      filechk_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/bin2c; echo "MAGIC_END;")
119targets += config_data.h
120$(obj)/config_data.h: $(obj)/config_data.gz FORCE
121	$(call filechk,ikconfiggz)
122
123$(obj)/time.o: $(obj)/timeconst.h
124
125quiet_cmd_hzfile = HZFILE  $@
126      cmd_hzfile = echo "hz=$(CONFIG_HZ)" > $@
127
128targets += hz.bc
129$(obj)/hz.bc: $(objtree)/include/config/hz.h FORCE
130	$(call if_changed,hzfile)
131
132quiet_cmd_bc  = BC      $@
133      cmd_bc  = bc -q $(filter-out FORCE,$^) > $@
134
135targets += timeconst.h
136$(obj)/timeconst.h: $(obj)/hz.bc $(src)/timeconst.bc FORCE
137	$(call if_changed,bc)
138
139ifeq ($(CONFIG_MODULE_SIG),y)
140#
141# Pull the signing certificate and any extra certificates into the kernel
142#
143
144quiet_cmd_touch = TOUCH   $@
145      cmd_touch = touch   $@
146
147extra_certificates:
148	$(call cmd,touch)
149
150kernel/modsign_certificate.o: signing_key.x509 extra_certificates
151
152###############################################################################
153#
154# If module signing is requested, say by allyesconfig, but a key has not been
155# supplied, then one will need to be generated to make sure the build does not
156# fail and that the kernel may be used afterwards.
157#
158###############################################################################
159ifndef CONFIG_MODULE_SIG_HASH
160$(error Could not determine digest type to use from kernel config)
161endif
162
163signing_key.priv signing_key.x509: x509.genkey
164	@echo "###"
165	@echo "### Now generating an X.509 key pair to be used for signing modules."
166	@echo "###"
167	@echo "### If this takes a long time, you might wish to run rngd in the"
168	@echo "### background to keep the supply of entropy topped up.  It"
169	@echo "### needs to be run as root, and uses a hardware random"
170	@echo "### number generator if one is available."
171	@echo "###"
172	openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500 \
173		-batch -x509 -config x509.genkey \
174		-outform DER -out signing_key.x509 \
175		-keyout signing_key.priv 2>&1
176	@echo "###"
177	@echo "### Key pair generated."
178	@echo "###"
179
180x509.genkey:
181	@echo Generating X.509 key generation config
182	@echo  >x509.genkey "[ req ]"
183	@echo >>x509.genkey "default_bits = 4096"
184	@echo >>x509.genkey "distinguished_name = req_distinguished_name"
185	@echo >>x509.genkey "prompt = no"
186	@echo >>x509.genkey "string_mask = utf8only"
187	@echo >>x509.genkey "x509_extensions = myexts"
188	@echo >>x509.genkey
189	@echo >>x509.genkey "[ req_distinguished_name ]"
190	@echo >>x509.genkey "O = Magrathea"
191	@echo >>x509.genkey "CN = Glacier signing key"
192	@echo >>x509.genkey "emailAddress = slartibartfast@magrathea.h2g2"
193	@echo >>x509.genkey
194	@echo >>x509.genkey "[ myexts ]"
195	@echo >>x509.genkey "basicConstraints=critical,CA:FALSE"
196	@echo >>x509.genkey "keyUsage=digitalSignature"
197	@echo >>x509.genkey "subjectKeyIdentifier=hash"
198	@echo >>x509.genkey "authorityKeyIdentifier=keyid"
199endif
200