linux-imx/kernel/Makefile

Makefile for the linux kernel.

obj-y = fork.o exec_domain.o panic.o printk.o
cpu.o exit.o itimer.o time.o softirq.o resource.o
sysctl.o sysctl_binary.o capability.o ptrace.o timer.o user.o
signal.o sys.o kmod.o workqueue.o pid.o task_work.o
rcupdate.o extable.o params.o posix-timers.o
kthread.o wait.o sys_ni.o posix-cpu-timers.o mutex.o
hrtimer.o rwsem.o nsproxy.o srcu.o semaphore.o
notifier.o ksysfs.o cred.o
async.o range.o groups.o lglock.o smpboot.o

ifdef CONFIG_FUNCTION_TRACER

Do not trace debug files and internal ftrace files

CFLAGS_REMOVE_lockdep.o = -pg CFLAGS_REMOVE_lockdep_proc.o = -pg CFLAGS_REMOVE_mutex-debug.o = -pg CFLAGS_REMOVE_rtmutex-debug.o = -pg CFLAGS_REMOVE_cgroup-debug.o = -pg CFLAGS_REMOVE_irq_work.o = -pg endif

obj-y += sched/ obj-y += power/

obj-$(CONFIG_CHECKPOINT_RESTORE) += kcmp.o obj-$(CONFIG_FREEZER) += freezer.o obj-$(CONFIG_PROFILING) += profile.o obj-$(CONFIG_STACKTRACE) += stacktrace.o obj-y += time/ obj-$(CONFIG_DEBUG_MUTEXES) += mutex-debug.o obj-$(CONFIG_LOCKDEP) += lockdep.o ifeq ($(CONFIG_PROC_FS),y) obj-$(CONFIG_LOCKDEP) += lockdep_proc.o endif obj-$(CONFIG_FUTEX) += futex.o ifeq ($(CONFIG_COMPAT),y) obj-$(CONFIG_FUTEX) += futex_compat.o endif obj-$(CONFIG_RT_MUTEXES) += rtmutex.o obj-$(CONFIG_DEBUG_RT_MUTEXES) += rtmutex-debug.o obj-$(CONFIG_RT_MUTEX_TESTER) += rtmutex-tester.o obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o obj-$(CONFIG_SMP) += smp.o ifneq ($(CONFIG_SMP),y) obj-y += up.o endif obj-$(CONFIG_SMP) += spinlock.o obj-$(CONFIG_DEBUG_SPINLOCK) += spinlock.o obj-$(CONFIG_PROVE_LOCKING) += spinlock.o obj-$(CONFIG_UID16) += uid16.o obj-$(CONFIG_MODULES) += module.o obj-$(CONFIG_MODULE_SIG) += module_signing.o modsign_pubkey.o modsign_certificate.o obj-$(CONFIG_KALLSYMS) += kallsyms.o obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o obj-$(CONFIG_KEXEC) += kexec.o obj-$(CONFIG_BACKTRACE_SELF_TEST) += backtracetest.o obj-$(CONFIG_COMPAT) += compat.o obj-$(CONFIG_CGROUPS) += cgroup.o obj-$(CONFIG_CGROUP_FREEZER) += cgroup_freezer.o obj-$(CONFIG_CPUSETS) += cpuset.o obj-$(CONFIG_UTS_NS) += utsname.o obj-$(CONFIG_USER_NS) += user_namespace.o obj-$(CONFIG_PID_NS) += pid_namespace.o obj-$(CONFIG_IKCONFIG) += configs.o obj-$(CONFIG_RESOURCE_COUNTERS) += res_counter.o obj-$(CONFIG_SMP) += stop_machine.o obj-$(CONFIG_KPROBES_SANITY_TEST) += test_kprobes.o obj-$(CONFIG_AUDIT) += audit.o auditfilter.o obj-$(CONFIG_AUDITSYSCALL) += auditsc.o obj-$(CONFIG_AUDIT_WATCH) += audit_watch.o obj-$(CONFIG_AUDIT_TREE) += audit_tree.o obj-$(CONFIG_GCOV_KERNEL) += gcov/ obj-$(CONFIG_KPROBES) += kprobes.o obj-$(CONFIG_KGDB) += debug/ obj-$(CONFIG_DETECT_HUNG_TASK) += hung_task.o obj-$(CONFIG_LOCKUP_DETECTOR) += watchdog.o obj-$(CONFIG_GENERIC_HARDIRQS) += irq/ obj-$(CONFIG_SECCOMP) += seccomp.o obj-$(CONFIG_RCU_TORTURE_TEST) += rcutorture.o obj-$(CONFIG_TREE_RCU) += rcutree.o obj-$(CONFIG_TREE_PREEMPT_RCU) += rcutree.o obj-$(CONFIG_TREE_RCU_TRACE) += rcutree_trace.o obj-$(CONFIG_TINY_RCU) += rcutiny.o obj-$(CONFIG_TINY_PREEMPT_RCU) += rcutiny.o obj-$(CONFIG_RELAY) += relay.o obj-$(CONFIG_SYSCTL) += utsname_sysctl.o obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o obj-$(CONFIG_TRACEPOINTS) += tracepoint.o obj-$(CONFIG_LATENCYTOP) += latencytop.o obj-$(CONFIG_BINFMT_ELF) += elfcore.o obj-$(CONFIG_COMPAT_BINFMT_ELF) += elfcore.o obj-$(CONFIG_BINFMT_ELF_FDPIC) += elfcore.o obj-$(CONFIG_FUNCTION_TRACER) += trace/ obj-$(CONFIG_TRACING) += trace/ obj-$(CONFIG_TRACE_CLOCK) += trace/ obj-$(CONFIG_RING_BUFFER) += trace/ obj-$(CONFIG_TRACEPOINTS) += trace/ obj-$(CONFIG_IRQ_WORK) += irq_work.o obj-$(CONFIG_CPU_PM) += cpu_pm.o

obj-$(CONFIG_PERF_EVENTS) += events/

obj-$(CONFIG_USER_RETURN_NOTIFIER) += user-return-notifier.o obj-$(CONFIG_PADATA) += padata.o obj-$(CONFIG_CRASH_DUMP) += crash_dump.o obj-$(CONFIG_JUMP_LABEL) += jump_label.o obj-$(CONFIG_CONTEXT_TRACKING) += context_tracking.o

$(obj)/configs.o: $(obj)/config_data.h

config_data.h contains the same information as ikconfig.h but gzipped.

Info from config_data can be extracted from /proc/config*

targets += config_data.gz $(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE $(call if_changed,gzip)

  filechk_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/bin2c; echo "MAGIC_END;")

targets += config_data.h $(obj)/config_data.h: $(obj)/config_data.gz FORCE $(call filechk,ikconfiggz)

$(obj)/time.o: $(obj)/timeconst.h

quiet_cmd_hzfile = HZFILE $@ cmd_hzfile = echo "hz=$(CONFIG_HZ)" > $@

targets += hz.bc $(obj)/hz.bc: $(objtree)/include/config/hz.h FORCE $(call if_changed,hzfile)

quiet_cmd_bc = BC $@ cmd_bc = bc -q $(filter-out FORCE,$^) > $@

targets += timeconst.h $(obj)/timeconst.h: $(obj)/hz.bc $(src)/timeconst.bc FORCE $(call if_changed,bc)

ifeq ($(CONFIG_MODULE_SIG),y)

Pull the signing certificate and any extra certificates into the kernel

quiet_cmd_touch = TOUCH $@ cmd_touch = touch $@

extra_certificates: $(call cmd,touch)

kernel/modsign_certificate.o: signing_key.x509 extra_certificates

###############################################################################

If module signing is requested, say by allyesconfig, but a key has not been

supplied, then one will need to be generated to make sure the build does not

fail and that the kernel may be used afterwards.

############################################################################### ifndef CONFIG_MODULE_SIG_HASH $(error Could not determine digest type to use from kernel config) endif

signing_key.priv signing_key.x509: x509.genkey @echo "###" @echo "### Now generating an X.509 key pair to be used for signing modules." @echo "###" @echo "### If this takes a long time, you might wish to run rngd in the" @echo "### background to keep the supply of entropy topped up. It" @echo "### needs to be run as root, and uses a hardware random" @echo "### number generator if one is available." @echo "###" openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500
-batch -x509 -config x509.genkey
-outform DER -out signing_key.x509
-keyout signing_key.priv @echo "###" @echo "### Key pair generated." @echo "###"

x509.genkey: @echo Generating X.509 key generation config @echo >x509.genkey "[ req ]" @echo >>x509.genkey "default_bits = 4096" @echo >>x509.genkey "distinguished_name = req_distinguished_name" @echo >>x509.genkey "prompt = no" @echo >>x509.genkey "string_mask = utf8only" @echo >>x509.genkey "x509_extensions = myexts" @echo >>x509.genkey @echo >>x509.genkey "[ req_distinguished_name ]" @echo >>x509.genkey "O = Magrathea" @echo >>x509.genkey "CN = Glacier signing key" @echo >>x509.genkey "emailAddress = slartibartfast@magrathea.h2g2" @echo >>x509.genkey @echo >>x509.genkey "[ myexts ]" @echo >>x509.genkey "basicConstraints=critical,CA:FALSE" @echo >>x509.genkey "keyUsage=digitalSignature" @echo >>x509.genkey "subjectKeyIdentifier=hash" @echo >>x509.genkey "authorityKeyIdentifier=keyid" endif