kernel/Makefile

   1 #
   2 # Makefile for the linux kernel.
   3 #
   4
   5 obj-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 kfifo.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 \
  13             async.o range.o groups.o lglock.o smpboot.o
  14
  15 ifdef CONFIG_FUNCTION_TRACER
  16 # Do not trace debug files and internal ftrace files
  17 CFLAGS_REMOVE_lockdep.o = -pg
  18 CFLAGS_REMOVE_lockdep_proc.o = -pg
  19 CFLAGS_REMOVE_mutex-debug.o = -pg
  20 CFLAGS_REMOVE_rtmutex-debug.o = -pg
  21 CFLAGS_REMOVE_cgroup-debug.o = -pg
  22 CFLAGS_REMOVE_irq_work.o = -pg
  23 endif
  24
  25 obj-y += sched/
  26 obj-y += power/
  27
  28 ifeq ($(CONFIG_CHECKPOINT_RESTORE),y)
  29 obj-$(CONFIG_X86) += kcmp.o
  30 endif
  31 obj-$(CONFIG_FREEZER) += freezer.o
  32 obj-$(CONFIG_PROFILING) += profile.o
  33 obj-$(CONFIG_STACKTRACE) += stacktrace.o
  34 obj-y += time/
  35 obj-$(CONFIG_DEBUG_MUTEXES) += mutex-debug.o
  36 obj-$(CONFIG_LOCKDEP) += lockdep.o
  37 ifeq ($(CONFIG_PROC_FS),y)
  38 obj-$(CONFIG_LOCKDEP) += lockdep_proc.o
  39 endif
  40 obj-$(CONFIG_FUTEX) += futex.o
  41 ifeq ($(CONFIG_COMPAT),y)
  42 obj-$(CONFIG_FUTEX) += futex_compat.o
  43 endif
  44 obj-$(CONFIG_RT_MUTEXES) += rtmutex.o
  45 obj-$(CONFIG_DEBUG_RT_MUTEXES) += rtmutex-debug.o
  46 obj-$(CONFIG_RT_MUTEX_TESTER) += rtmutex-tester.o
  47 obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o
  48 obj-$(CONFIG_SMP) += smp.o
  49 ifneq ($(CONFIG_SMP),y)
  50 obj-y += up.o
  51 endif
  52 obj-$(CONFIG_SMP) += spinlock.o
  53 obj-$(CONFIG_DEBUG_SPINLOCK) += spinlock.o
  54 obj-$(CONFIG_PROVE_LOCKING) += spinlock.o
  55 obj-$(CONFIG_UID16) += uid16.o
  56 obj-$(CONFIG_MODULES) += module.o
  57 obj-$(CONFIG_MODULE_SIG) += module_signing.o modsign_pubkey.o modsign_certificate.o
  58 obj-$(CONFIG_KALLSYMS) += kallsyms.o
  59 obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o
  60 obj-$(CONFIG_KEXEC) += kexec.o
  61 obj-$(CONFIG_BACKTRACE_SELF_TEST) += backtracetest.o
  62 obj-$(CONFIG_COMPAT) += compat.o
  63 obj-$(CONFIG_CGROUPS) += cgroup.o
  64 obj-$(CONFIG_CGROUP_FREEZER) += cgroup_freezer.o
  65 obj-$(CONFIG_CPUSETS) += cpuset.o
  66 obj-$(CONFIG_UTS_NS) += utsname.o
  67 obj-$(CONFIG_USER_NS) += user_namespace.o
  68 obj-$(CONFIG_PID_NS) += pid_namespace.o
  69 obj-$(CONFIG_IKCONFIG) += configs.o
  70 obj-$(CONFIG_RESOURCE_COUNTERS) += res_counter.o
  71 obj-$(CONFIG_SMP) += stop_machine.o
  72 obj-$(CONFIG_KPROBES_SANITY_TEST) += test_kprobes.o
  73 obj-$(CONFIG_AUDIT) += audit.o auditfilter.o
  74 obj-$(CONFIG_AUDITSYSCALL) += auditsc.o
  75 obj-$(CONFIG_AUDIT_WATCH) += audit_watch.o
  76 obj-$(CONFIG_AUDIT_TREE) += audit_tree.o
  77 obj-$(CONFIG_GCOV_KERNEL) += gcov/
  78 obj-$(CONFIG_KPROBES) += kprobes.o
  79 obj-$(CONFIG_KGDB) += debug/
  80 obj-$(CONFIG_DETECT_HUNG_TASK) += hung_task.o
  81 obj-$(CONFIG_LOCKUP_DETECTOR) += watchdog.o
  82 obj-$(CONFIG_GENERIC_HARDIRQS) += irq/
  83 obj-$(CONFIG_SECCOMP) += seccomp.o
  84 obj-$(CONFIG_RCU_TORTURE_TEST) += rcutorture.o
  85 obj-$(CONFIG_TREE_RCU) += rcutree.o
  86 obj-$(CONFIG_TREE_PREEMPT_RCU) += rcutree.o
  87 obj-$(CONFIG_TREE_RCU_TRACE) += rcutree_trace.o
  88 obj-$(CONFIG_TINY_RCU) += rcutiny.o
  89 obj-$(CONFIG_TINY_PREEMPT_RCU) += rcutiny.o
  90 obj-$(CONFIG_RELAY) += relay.o
  91 obj-$(CONFIG_SYSCTL) += utsname_sysctl.o
  92 obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o
  93 obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o
  94 obj-$(CONFIG_TRACEPOINTS) += tracepoint.o
  95 obj-$(CONFIG_LATENCYTOP) += latencytop.o
  96 obj-$(CONFIG_BINFMT_ELF) += elfcore.o
  97 obj-$(CONFIG_COMPAT_BINFMT_ELF) += elfcore.o
  98 obj-$(CONFIG_BINFMT_ELF_FDPIC) += elfcore.o
  99 obj-$(CONFIG_FUNCTION_TRACER) += trace/
 100 obj-$(CONFIG_TRACING) += trace/
 101 obj-$(CONFIG_TRACE_CLOCK) += trace/
 102 obj-$(CONFIG_RING_BUFFER) += trace/
 103 obj-$(CONFIG_TRACEPOINTS) += trace/
 104 obj-$(CONFIG_IRQ_WORK) += irq_work.o
 105 obj-$(CONFIG_CPU_PM) += cpu_pm.o
 106
 107 obj-$(CONFIG_PERF_EVENTS) += events/
 108
 109 obj-$(CONFIG_USER_RETURN_NOTIFIER) += user-return-notifier.o
 110 obj-$(CONFIG_PADATA) += padata.o
 111 obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
 112 obj-$(CONFIG_JUMP_LABEL) += jump_label.o
 113 obj-$(CONFIG_CONTEXT_TRACKING) += context_tracking.o
 114
 115 $(obj)/configs.o: $(obj)/config_data.h
 116
 117 # config_data.h contains the same information as ikconfig.h but gzipped.
 118 # Info from config_data can be extracted from /proc/config*
 119 targets += config_data.gz
 120 $(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE
 121         $(call if_changed,gzip)
 122
 123       filechk_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/bin2c; echo "MAGIC_END;")
 124 targets += config_data.h
 125 $(obj)/config_data.h: $(obj)/config_data.gz FORCE
 126         $(call filechk,ikconfiggz)
 127
 128 $(obj)/time.o: $(obj)/timeconst.h
 129
 130 quiet_cmd_timeconst  = TIMEC   $@
 131       cmd_timeconst  = $(PERL) $< $(CONFIG_HZ) > $@
 132 targets += timeconst.h
 133 $(obj)/timeconst.h: $(src)/timeconst.pl FORCE
 134         $(call if_changed,timeconst)
 135
 136 ifeq ($(CONFIG_MODULE_SIG),y)
 137 #
 138 # Pull the signing certificate and any extra certificates into the kernel
 139 #
 140
 141 quiet_cmd_touch = TOUCH   $@
 142       cmd_touch = touch   $@
 143
 144 extra_certificates:
 145         $(call cmd,touch)
 146
 147 kernel/modsign_certificate.o: signing_key.x509 extra_certificates
 148
 149 ###############################################################################
 150 #
 151 # If module signing is requested, say by allyesconfig, but a key has not been
 152 # supplied, then one will need to be generated to make sure the build does not
 153 # fail and that the kernel may be used afterwards.
 154 #
 155 ###############################################################################
 156 sign_key_with_hash :=
 157 ifeq ($(CONFIG_MODULE_SIG_SHA1),y)
 158 sign_key_with_hash := -sha1
 159 endif
 160 ifeq ($(CONFIG_MODULE_SIG_SHA224),y)
 161 sign_key_with_hash := -sha224
 162 endif
 163 ifeq ($(CONFIG_MODULE_SIG_SHA256),y)
 164 sign_key_with_hash := -sha256
 165 endif
 166 ifeq ($(CONFIG_MODULE_SIG_SHA384),y)
 167 sign_key_with_hash := -sha384
 168 endif
 169 ifeq ($(CONFIG_MODULE_SIG_SHA512),y)
 170 sign_key_with_hash := -sha512
 171 endif
 172 ifeq ($(sign_key_with_hash),)
 173 $(error Could not determine digest type to use from kernel config)
 174 endif
 175
 176 signing_key.priv signing_key.x509: x509.genkey
 177         @echo "###"
 178         @echo "### Now generating an X.509 key pair to be used for signing modules."
 179         @echo "###"
 180         @echo "### If this takes a long time, you might wish to run rngd in the"
 181         @echo "### background to keep the supply of entropy topped up.  It"
 182         @echo "### needs to be run as root, and uses a hardware random"
 183         @echo "### number generator if one is available."
 184         @echo "###"
 185         openssl req -new -nodes -utf8 $(sign_key_with_hash) -days 36500 -batch \
 186                 -x509 -config x509.genkey \
 187                 -outform DER -out signing_key.x509 \
 188                 -keyout signing_key.priv
 189         @echo "###"
 190         @echo "### Key pair generated."
 191         @echo "###"
 192
 193 x509.genkey:
 194         @echo Generating X.509 key generation config
 195         @echo  >x509.genkey "[ req ]"
 196         @echo >>x509.genkey "default_bits = 4096"
 197         @echo >>x509.genkey "distinguished_name = req_distinguished_name"
 198         @echo >>x509.genkey "prompt = no"
 199         @echo >>x509.genkey "string_mask = utf8only"
 200         @echo >>x509.genkey "x509_extensions = myexts"
 201         @echo >>x509.genkey
 202         @echo >>x509.genkey "[ req_distinguished_name ]"
 203         @echo >>x509.genkey "O = Magrathea"
 204         @echo >>x509.genkey "CN = Glacier signing key"
 205         @echo >>x509.genkey "emailAddress = slartibartfast@magrathea.h2g2"
 206         @echo >>x509.genkey
 207         @echo >>x509.genkey "[ myexts ]"
 208         @echo >>x509.genkey "basicConstraints=critical,CA:FALSE"
 209         @echo >>x509.genkey "keyUsage=digitalSignature"
 210         @echo >>x509.genkey "subjectKeyIdentifier=hash"
 211         @echo >>x509.genkey "authorityKeyIdentifier=keyid"
 212 endif