kernel/Makefile - nest-learning-thermostat/5.15/linux-imx-ul - Git at Google


            
            #

            
            # Makefile for the linux kernel.

            
            #


            obj-y     = fork.o exec_domain.o panic.o \

            
            	    cpu.o exit.o softirq.o resource.o \

            
            	    sysctl.o sysctl_binary.o capability.o ptrace.o user.o \

            
            	    signal.o sys.o kmod.o workqueue.o pid.o task_work.o \

            
            	    extable.o params.o \

            
            	    kthread.o sys_ni.o nsproxy.o \

            
            	    notifier.o ksysfs.o cred.o reboot.o \

            
            	    async.o range.o smpboot.o


            obj-$(CONFIG_MULTIUSER) += groups.o


            ifdef CONFIG_FUNCTION_TRACER

            
            # Do not trace debug files and internal ftrace files

            
            CFLAGS_REMOVE_cgroup-debug.o = $(CC_FLAGS_FTRACE)

            
            CFLAGS_REMOVE_irq_work.o = $(CC_FLAGS_FTRACE)

            
            endif


            # cond_syscall is currently not LTO compatible

            
            CFLAGS_sys_ni.o = $(DISABLE_LTO)


            obj-y += sched/

            
            obj-y += locking/

            
            obj-y += power/

            
            obj-y += printk/

            
            obj-y += irq/

            
            obj-y += rcu/

            
            obj-y += livepatch/


            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_FUTEX) += futex.o

            
            ifeq ($(CONFIG_COMPAT),y)

            
            obj-$(CONFIG_FUTEX) += futex_compat.o

            
            endif

            
            obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o

            
            obj-$(CONFIG_SMP) += smp.o

            
            ifneq ($(CONFIG_SMP),y)

            
            obj-y += up.o

            
            endif

            
            obj-$(CONFIG_UID16) += uid16.o

            
            obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o

            
            obj-$(CONFIG_MODULES) += module.o

            
            obj-$(CONFIG_MODULE_SIG) += module_signing.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_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_SECCOMP) += seccomp.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_BPF) += bpf/


            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-$(CONFIG_TORTURE_TEST) += torture.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/basic/bin2c; echo "MAGIC_END;")

            
            targets += config_data.h

            
            $(obj)/config_data.h: $(obj)/config_data.gz FORCE

            
            	$(call filechk,ikconfiggz)


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

            
            #

            
            # Roll all the X.509 certificates that we can find together and pull them into

            
            # the kernel so that they get loaded into the system trusted keyring during

            
            # boot.

            
            #

            
            # We look in the source root and the build root for all files whose name ends

            
            # in ".x509".  Unfortunately, this will generate duplicate filenames, so we

            
            # have make canonicalise the pathnames and then sort them to discard the

            
            # duplicates.

            
            #

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

            
            ifeq ($(CONFIG_SYSTEM_TRUSTED_KEYRING),y)

            
            X509_CERTIFICATES-y := $(wildcard *.x509) $(wildcard $(srctree)/*.x509)

            
            X509_CERTIFICATES-$(CONFIG_MODULE_SIG) += $(objtree)/signing_key.x509

            
            X509_CERTIFICATES-raw := $(sort $(foreach CERT,$(X509_CERTIFICATES-y), \

            
            				$(or $(realpath $(CERT)),$(CERT))))

            
            X509_CERTIFICATES := $(subst $(realpath $(objtree))/,,$(X509_CERTIFICATES-raw))


            ifeq ($(X509_CERTIFICATES),)

            
            $(warning *** No X.509 certificates found ***)

            
            endif


            ifneq ($(wildcard $(obj)/.x509.list),)

            
            ifneq ($(shell cat $(obj)/.x509.list),$(X509_CERTIFICATES))

            
            $(info X.509 certificate list changed)

            
            $(shell rm $(obj)/.x509.list)

            
            endif

            
            endif


            kernel/system_certificates.o: $(obj)/x509_certificate_list


            quiet_cmd_x509certs  = CERTS   $@

            
                  cmd_x509certs  = cat $(X509_CERTIFICATES) /dev/null >$@ $(foreach X509,$(X509_CERTIFICATES),; $(kecho) "  - Including cert $(X509)")


            targets += $(obj)/x509_certificate_list

            
            $(obj)/x509_certificate_list: $(X509_CERTIFICATES) $(obj)/.x509.list

            
            	$(call if_changed,x509certs)


            targets += $(obj)/.x509.list

            
            $(obj)/.x509.list:

            
            	@echo $(X509_CERTIFICATES) >$@

            
            endif


            clean-files := x509_certificate_list .x509.list


            ifeq ($(CONFIG_MODULE_SIG),y)

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

            
            #

            
            # 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 2>&1

            
            	@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 = Unspecified company"

            
            	@echo >>x509.genkey "CN = Build time autogenerated kernel key"

            
            	@echo >>x509.genkey "#emailAddress = unspecified.user@unspecified.company"

            
            	@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
	#
	# Makefile for the linux kernel.
	#

	obj-y = fork.o exec_domain.o panic.o \
	cpu.o exit.o softirq.o resource.o \
	sysctl.o sysctl_binary.o capability.o ptrace.o user.o \
	signal.o sys.o kmod.o workqueue.o pid.o task_work.o \
	extable.o params.o \
	kthread.o sys_ni.o nsproxy.o \
	notifier.o ksysfs.o cred.o reboot.o \
	async.o range.o smpboot.o

	obj-$(CONFIG_MULTIUSER) += groups.o

	ifdef CONFIG_FUNCTION_TRACER
	# Do not trace debug files and internal ftrace files
	CFLAGS_REMOVE_cgroup-debug.o = $(CC_FLAGS_FTRACE)
	CFLAGS_REMOVE_irq_work.o = $(CC_FLAGS_FTRACE)
	endif

	# cond_syscall is currently not LTO compatible
	CFLAGS_sys_ni.o = $(DISABLE_LTO)

	obj-y += sched/
	obj-y += locking/
	obj-y += power/
	obj-y += printk/
	obj-y += irq/
	obj-y += rcu/
	obj-y += livepatch/

	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-$(CONFIG_FUTEX) += futex.o
	ifeq ($(CONFIG_COMPAT),y)
	obj-$(CONFIG_FUTEX) += futex_compat.o
	endif
	obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o
	obj-$(CONFIG_SMP) += smp.o
	ifneq ($(CONFIG_SMP),y)
	obj-y += up.o
	endif
	obj-$(CONFIG_UID16) += uid16.o
	obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o
	obj-$(CONFIG_MODULES) += module.o
	obj-$(CONFIG_MODULE_SIG) += module_signing.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-$(CONFIG_SMP) += stop_machine.o
	obj-$(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_SECCOMP) += seccomp.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_BPF) += bpf/

	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-$(CONFIG_CONTEXT_TRACKING) += context_tracking.o
	obj-$(CONFIG_TORTURE_TEST) += torture.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/basic/bin2c; echo "MAGIC_END;")
	targets += config_data.h
	$(obj)/config_data.h: $(obj)/config_data.gz FORCE
	$(call filechk,ikconfiggz)

	###############################################################################
	#
	# Roll all the X.509 certificates that we can find together and pull them into
	# the kernel so that they get loaded into the system trusted keyring during
	# boot.
	#
	# We look in the source root and the build root for all files whose name ends
	# in ".x509". Unfortunately, this will generate duplicate filenames, so we
	# have make canonicalise the pathnames and then sort them to discard the
	# duplicates.
	#
	###############################################################################
	ifeq ($(CONFIG_SYSTEM_TRUSTED_KEYRING),y)
	X509_CERTIFICATES-y := $(wildcard .x509) $(wildcard $(srctree)/.x509)
	X509_CERTIFICATES-$(CONFIG_MODULE_SIG) += $(objtree)/signing_key.x509
	X509_CERTIFICATES-raw := $(sort $(foreach CERT,$(X509_CERTIFICATES-y), \
	$(or $(realpath $(CERT)),$(CERT))))
	X509_CERTIFICATES := $(subst $(realpath $(objtree))/,,$(X509_CERTIFICATES-raw))

	ifeq ($(X509_CERTIFICATES),)
	$(warning * No X.509 certificates found *)
	endif

	ifneq ($(wildcard $(obj)/.x509.list),)
	ifneq ($(shell cat $(obj)/.x509.list),$(X509_CERTIFICATES))
	$(info X.509 certificate list changed)
	$(shell rm $(obj)/.x509.list)
	endif
	endif

	kernel/system_certificates.o: $(obj)/x509_certificate_list

	quiet_cmd_x509certs = CERTS $@
	cmd_x509certs = cat $(X509_CERTIFICATES) /dev/null >$@ $(foreach X509,$(X509_CERTIFICATES),; $(kecho) " - Including cert $(X509)")

	targets += $(obj)/x509_certificate_list
	$(obj)/x509_certificate_list: $(X509_CERTIFICATES) $(obj)/.x509.list
	$(call if_changed,x509certs)

	targets += $(obj)/.x509.list
	$(obj)/.x509.list:
	@echo $(X509_CERTIFICATES) >$@
	endif

	clean-files := x509_certificate_list .x509.list

	ifeq ($(CONFIG_MODULE_SIG),y)
	###############################################################################
	#
	# 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 2>&1
	@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 = Unspecified company"
	@echo >>x509.genkey "CN = Build time autogenerated kernel key"
	@echo >>x509.genkey "#emailAddress = unspecified.user@unspecified.company"
	@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