linux/kernel/Makefile
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   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 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
  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/
  27
  28ifeq ($(CONFIG_CHECKPOINT_RESTORE),y)
  29obj-$(CONFIG_X86) += kcmp.o
  30endif
  31obj-$(CONFIG_FREEZER) += freezer.o
  32obj-$(CONFIG_PROFILING) += profile.o
  33obj-$(CONFIG_STACKTRACE) += stacktrace.o
  34obj-y += time/
  35obj-$(CONFIG_DEBUG_MUTEXES) += mutex-debug.o
  36obj-$(CONFIG_LOCKDEP) += lockdep.o
  37ifeq ($(CONFIG_PROC_FS),y)
  38obj-$(CONFIG_LOCKDEP) += lockdep_proc.o
  39endif
  40obj-$(CONFIG_FUTEX) += futex.o
  41ifeq ($(CONFIG_COMPAT),y)
  42obj-$(CONFIG_FUTEX) += futex_compat.o
  43endif
  44obj-$(CONFIG_RT_MUTEXES) += rtmutex.o
  45obj-$(CONFIG_DEBUG_RT_MUTEXES) += rtmutex-debug.o
  46obj-$(CONFIG_RT_MUTEX_TESTER) += rtmutex-tester.o
  47obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o
  48obj-$(CONFIG_SMP) += smp.o
  49ifneq ($(CONFIG_SMP),y)
  50obj-y += up.o
  51endif
  52obj-$(CONFIG_SMP) += spinlock.o
  53obj-$(CONFIG_DEBUG_SPINLOCK) += spinlock.o
  54obj-$(CONFIG_PROVE_LOCKING) += spinlock.o
  55obj-$(CONFIG_UID16) += uid16.o
  56obj-$(CONFIG_MODULES) += module.o
  57obj-$(CONFIG_MODULE_SIG) += module_signing.o modsign_pubkey.o modsign_certificate.o
  58obj-$(CONFIG_KALLSYMS) += kallsyms.o
  59obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o
  60obj-$(CONFIG_KEXEC) += kexec.o
  61obj-$(CONFIG_BACKTRACE_SELF_TEST) += backtracetest.o
  62obj-$(CONFIG_COMPAT) += compat.o
  63obj-$(CONFIG_CGROUPS) += cgroup.o
  64obj-$(CONFIG_CGROUP_FREEZER) += cgroup_freezer.o
  65obj-$(CONFIG_CPUSETS) += cpuset.o
  66obj-$(CONFIG_UTS_NS) += utsname.o
  67obj-$(CONFIG_USER_NS) += user_namespace.o
  68obj-$(CONFIG_PID_NS) += pid_namespace.o
  69obj-$(CONFIG_IKCONFIG) += configs.o
  70obj-$(CONFIG_RESOURCE_COUNTERS) += res_counter.o
  71obj-$(CONFIG_SMP) += stop_machine.o
  72obj-$(CONFIG_KPROBES_SANITY_TEST) += test_kprobes.o
  73obj-$(CONFIG_AUDIT) += audit.o auditfilter.o
  74obj-$(CONFIG_AUDITSYSCALL) += auditsc.o
  75obj-$(CONFIG_AUDIT_WATCH) += audit_watch.o
  76obj-$(CONFIG_AUDIT_TREE) += audit_tree.o
  77obj-$(CONFIG_GCOV_KERNEL) += gcov/
  78obj-$(CONFIG_KPROBES) += kprobes.o
  79obj-$(CONFIG_KGDB) += debug/
  80obj-$(CONFIG_DETECT_HUNG_TASK) += hung_task.o
  81obj-$(CONFIG_LOCKUP_DETECTOR) += watchdog.o
  82obj-$(CONFIG_GENERIC_HARDIRQS) += irq/
  83obj-$(CONFIG_SECCOMP) += seccomp.o
  84obj-$(CONFIG_RCU_TORTURE_TEST) += rcutorture.o
  85obj-$(CONFIG_TREE_RCU) += rcutree.o
  86obj-$(CONFIG_TREE_PREEMPT_RCU) += rcutree.o
  87obj-$(CONFIG_TREE_RCU_TRACE) += rcutree_trace.o
  88obj-$(CONFIG_TINY_RCU) += rcutiny.o
  89obj-$(CONFIG_TINY_PREEMPT_RCU) += rcutiny.o
  90obj-$(CONFIG_RELAY) += relay.o
  91obj-$(CONFIG_SYSCTL) += utsname_sysctl.o
  92obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o
  93obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o
  94obj-$(CONFIG_TRACEPOINTS) += tracepoint.o
  95obj-$(CONFIG_LATENCYTOP) += latencytop.o
  96obj-$(CONFIG_BINFMT_ELF) += elfcore.o
  97obj-$(CONFIG_COMPAT_BINFMT_ELF) += elfcore.o
  98obj-$(CONFIG_BINFMT_ELF_FDPIC) += elfcore.o
  99obj-$(CONFIG_FUNCTION_TRACER) += trace/
 100obj-$(CONFIG_TRACING) += trace/
 101obj-$(CONFIG_TRACE_CLOCK) += trace/
 102obj-$(CONFIG_RING_BUFFER) += trace/
 103obj-$(CONFIG_TRACEPOINTS) += trace/
 104obj-$(CONFIG_IRQ_WORK) += irq_work.o
 105obj-$(CONFIG_CPU_PM) += cpu_pm.o
 106
 107obj-$(CONFIG_PERF_EVENTS) += events/
 108
 109obj-$(CONFIG_USER_RETURN_NOTIFIER) += user-return-notifier.o
 110obj-$(CONFIG_PADATA) += padata.o
 111obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
 112obj-$(CONFIG_JUMP_LABEL) += jump_label.o
 113obj-$(CONFIG_CONTEXT_TRACKING) += context_tracking.o
 114
 115$(obj)/configs.o: $(obj)/config_data.h
 116
 117# config_data.h contains the same information as ikconfig.h but gzipped.
 118# Info from config_data can be extracted from /proc/config*
 119targets += config_data.gz
 120$(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 $< | scripts/bin2c; echo "MAGIC_END;")
 124targets += config_data.h
 125$(obj)/config_data.h: $(obj)/config_data.gz FORCE
 126        $(call filechk,ikconfiggz)
 127
 128$(obj)/time.o: $(obj)/timeconst.h
 129
 130quiet_cmd_timeconst  = TIMEC   $@
 131      cmd_timeconst  = $(PERL) $< $(CONFIG_HZ) > $@
 132targets += timeconst.h
 133$(obj)/timeconst.h: $(src)/timeconst.pl FORCE
 134        $(call if_changed,timeconst)
 135
 136ifeq ($(CONFIG_MODULE_SIG),y)
 137#
 138# Pull the signing certificate and any extra certificates into the kernel
 139#
 140
 141quiet_cmd_touch = TOUCH   $@
 142      cmd_touch = touch   $@
 143
 144extra_certificates:
 145        $(call cmd,touch)
 146
 147kernel/modsign_certificate.o: signing_key.x509 extra_certificates
 148
 149###############################################################################
 150#
 151# If module signing is requested, say by allyesconfig, but a key has not been
 152# supplied, then one will need to be generated to make sure the build does not
 153# fail and that the kernel may be used afterwards.
 154#
 155###############################################################################
 156sign_key_with_hash :=
 157ifeq ($(CONFIG_MODULE_SIG_SHA1),y)
 158sign_key_with_hash := -sha1
 159endif
 160ifeq ($(CONFIG_MODULE_SIG_SHA224),y)
 161sign_key_with_hash := -sha224
 162endif
 163ifeq ($(CONFIG_MODULE_SIG_SHA256),y)
 164sign_key_with_hash := -sha256
 165endif
 166ifeq ($(CONFIG_MODULE_SIG_SHA384),y)
 167sign_key_with_hash := -sha384
 168endif
 169ifeq ($(CONFIG_MODULE_SIG_SHA512),y)
 170sign_key_with_hash := -sha512
 171endif
 172ifeq ($(sign_key_with_hash),)
 173$(error Could not determine digest type to use from kernel config)
 174endif
 175
 176signing_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
 193x509.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"
 212endif
 213
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