Root/
1 | # |
2 | # Makefile for the linux kernel. |
3 | # |
4 | |
5 | obj-y = fork.o exec_domain.o panic.o \ |
6 | cpu.o exit.o softirq.o resource.o \ |
7 | sysctl.o sysctl_binary.o capability.o ptrace.o user.o \ |
8 | signal.o sys.o kmod.o workqueue.o pid.o task_work.o \ |
9 | extable.o params.o \ |
10 | kthread.o sys_ni.o nsproxy.o \ |
11 | notifier.o ksysfs.o cred.o reboot.o \ |
12 | async.o range.o groups.o smpboot.o |
13 | |
14 | ifdef CONFIG_FUNCTION_TRACER |
15 | # Do not trace debug files and internal ftrace files |
16 | CFLAGS_REMOVE_cgroup-debug.o = -pg |
17 | CFLAGS_REMOVE_irq_work.o = -pg |
18 | endif |
19 | |
20 | # cond_syscall is currently not LTO compatible |
21 | CFLAGS_sys_ni.o = $(DISABLE_LTO) |
22 | |
23 | obj-y += sched/ |
24 | obj-y += locking/ |
25 | obj-y += power/ |
26 | obj-y += printk/ |
27 | obj-y += irq/ |
28 | obj-y += rcu/ |
29 | |
30 | obj-$(CONFIG_CHECKPOINT_RESTORE) += kcmp.o |
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_FUTEX) += futex.o |
36 | ifeq ($(CONFIG_COMPAT),y) |
37 | obj-$(CONFIG_FUTEX) += futex_compat.o |
38 | endif |
39 | obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o |
40 | obj-$(CONFIG_SMP) += smp.o |
41 | ifneq ($(CONFIG_SMP),y) |
42 | obj-y += up.o |
43 | endif |
44 | obj-$(CONFIG_UID16) += uid16.o |
45 | obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o |
46 | obj-$(CONFIG_MODULES) += module.o |
47 | obj-$(CONFIG_MODULE_SIG) += module_signing.o |
48 | obj-$(CONFIG_KALLSYMS) += kallsyms.o |
49 | obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o |
50 | obj-$(CONFIG_KEXEC) += kexec.o |
51 | obj-$(CONFIG_BACKTRACE_SELF_TEST) += backtracetest.o |
52 | obj-$(CONFIG_COMPAT) += compat.o |
53 | obj-$(CONFIG_CGROUPS) += cgroup.o |
54 | obj-$(CONFIG_CGROUP_FREEZER) += cgroup_freezer.o |
55 | obj-$(CONFIG_CPUSETS) += cpuset.o |
56 | obj-$(CONFIG_UTS_NS) += utsname.o |
57 | obj-$(CONFIG_USER_NS) += user_namespace.o |
58 | obj-$(CONFIG_PID_NS) += pid_namespace.o |
59 | obj-$(CONFIG_IKCONFIG) += configs.o |
60 | obj-$(CONFIG_RESOURCE_COUNTERS) += res_counter.o |
61 | obj-$(CONFIG_SMP) += stop_machine.o |
62 | obj-$(CONFIG_KPROBES_SANITY_TEST) += test_kprobes.o |
63 | obj-$(CONFIG_AUDIT) += audit.o auditfilter.o |
64 | obj-$(CONFIG_AUDITSYSCALL) += auditsc.o |
65 | obj-$(CONFIG_AUDIT_WATCH) += audit_watch.o |
66 | obj-$(CONFIG_AUDIT_TREE) += audit_tree.o |
67 | obj-$(CONFIG_GCOV_KERNEL) += gcov/ |
68 | obj-$(CONFIG_KPROBES) += kprobes.o |
69 | obj-$(CONFIG_KGDB) += debug/ |
70 | obj-$(CONFIG_DETECT_HUNG_TASK) += hung_task.o |
71 | obj-$(CONFIG_LOCKUP_DETECTOR) += watchdog.o |
72 | obj-$(CONFIG_SECCOMP) += seccomp.o |
73 | obj-$(CONFIG_RELAY) += relay.o |
74 | obj-$(CONFIG_SYSCTL) += utsname_sysctl.o |
75 | obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o |
76 | obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o |
77 | obj-$(CONFIG_TRACEPOINTS) += tracepoint.o |
78 | obj-$(CONFIG_LATENCYTOP) += latencytop.o |
79 | obj-$(CONFIG_BINFMT_ELF) += elfcore.o |
80 | obj-$(CONFIG_COMPAT_BINFMT_ELF) += elfcore.o |
81 | obj-$(CONFIG_BINFMT_ELF_FDPIC) += elfcore.o |
82 | obj-$(CONFIG_FUNCTION_TRACER) += trace/ |
83 | obj-$(CONFIG_TRACING) += trace/ |
84 | obj-$(CONFIG_TRACE_CLOCK) += trace/ |
85 | obj-$(CONFIG_RING_BUFFER) += trace/ |
86 | obj-$(CONFIG_TRACEPOINTS) += trace/ |
87 | obj-$(CONFIG_IRQ_WORK) += irq_work.o |
88 | obj-$(CONFIG_CPU_PM) += cpu_pm.o |
89 | obj-$(CONFIG_BPF) += bpf/ |
90 | |
91 | obj-$(CONFIG_PERF_EVENTS) += events/ |
92 | |
93 | obj-$(CONFIG_USER_RETURN_NOTIFIER) += user-return-notifier.o |
94 | obj-$(CONFIG_PADATA) += padata.o |
95 | obj-$(CONFIG_CRASH_DUMP) += crash_dump.o |
96 | obj-$(CONFIG_JUMP_LABEL) += jump_label.o |
97 | obj-$(CONFIG_CONTEXT_TRACKING) += context_tracking.o |
98 | obj-$(CONFIG_TORTURE_TEST) += torture.o |
99 | |
100 | $(obj)/configs.o: $(obj)/config_data.h |
101 | |
102 | # config_data.h contains the same information as ikconfig.h but gzipped. |
103 | # Info from config_data can be extracted from /proc/config* |
104 | targets += config_data.gz |
105 | $(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE |
106 | $(call if_changed,gzip) |
107 | |
108 | filechk_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/basic/bin2c; echo "MAGIC_END;") |
109 | targets += config_data.h |
110 | $(obj)/config_data.h: $(obj)/config_data.gz FORCE |
111 | $(call filechk,ikconfiggz) |
112 | |
113 | ############################################################################### |
114 | # |
115 | # Roll all the X.509 certificates that we can find together and pull them into |
116 | # the kernel so that they get loaded into the system trusted keyring during |
117 | # boot. |
118 | # |
119 | # We look in the source root and the build root for all files whose name ends |
120 | # in ".x509". Unfortunately, this will generate duplicate filenames, so we |
121 | # have make canonicalise the pathnames and then sort them to discard the |
122 | # duplicates. |
123 | # |
124 | ############################################################################### |
125 | ifeq ($(CONFIG_SYSTEM_TRUSTED_KEYRING),y) |
126 | X509_CERTIFICATES-y := $(wildcard *.x509) $(wildcard $(srctree)/*.x509) |
127 | X509_CERTIFICATES-$(CONFIG_MODULE_SIG) += $(objtree)/signing_key.x509 |
128 | X509_CERTIFICATES-raw := $(sort $(foreach CERT,$(X509_CERTIFICATES-y), \ |
129 | $(or $(realpath $(CERT)),$(CERT)))) |
130 | X509_CERTIFICATES := $(subst $(realpath $(objtree))/,,$(X509_CERTIFICATES-raw)) |
131 | |
132 | ifeq ($(X509_CERTIFICATES),) |
133 | $(warning *** No X.509 certificates found ***) |
134 | endif |
135 | |
136 | ifneq ($(wildcard $(obj)/.x509.list),) |
137 | ifneq ($(shell cat $(obj)/.x509.list),$(X509_CERTIFICATES)) |
138 | $(info X.509 certificate list changed) |
139 | $(shell rm $(obj)/.x509.list) |
140 | endif |
141 | endif |
142 | |
143 | kernel/system_certificates.o: $(obj)/x509_certificate_list |
144 | |
145 | quiet_cmd_x509certs = CERTS $@ |
146 | cmd_x509certs = cat $(X509_CERTIFICATES) /dev/null >$@ $(foreach X509,$(X509_CERTIFICATES),; echo " - Including cert $(X509)") |
147 | |
148 | targets += $(obj)/x509_certificate_list |
149 | $(obj)/x509_certificate_list: $(X509_CERTIFICATES) $(obj)/.x509.list |
150 | $(call if_changed,x509certs) |
151 | |
152 | targets += $(obj)/.x509.list |
153 | $(obj)/.x509.list: |
154 | @echo $(X509_CERTIFICATES) >$@ |
155 | endif |
156 | |
157 | clean-files := x509_certificate_list .x509.list |
158 | |
159 | ifeq ($(CONFIG_MODULE_SIG),y) |
160 | ############################################################################### |
161 | # |
162 | # If module signing is requested, say by allyesconfig, but a key has not been |
163 | # supplied, then one will need to be generated to make sure the build does not |
164 | # fail and that the kernel may be used afterwards. |
165 | # |
166 | ############################################################################### |
167 | ifndef CONFIG_MODULE_SIG_HASH |
168 | $(error Could not determine digest type to use from kernel config) |
169 | endif |
170 | |
171 | signing_key.priv signing_key.x509: x509.genkey |
172 | @echo "###" |
173 | @echo "### Now generating an X.509 key pair to be used for signing modules." |
174 | @echo "###" |
175 | @echo "### If this takes a long time, you might wish to run rngd in the" |
176 | @echo "### background to keep the supply of entropy topped up. It" |
177 | @echo "### needs to be run as root, and uses a hardware random" |
178 | @echo "### number generator if one is available." |
179 | @echo "###" |
180 | openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500 \ |
181 | -batch -x509 -config x509.genkey \ |
182 | -outform DER -out signing_key.x509 \ |
183 | -keyout signing_key.priv 2>&1 |
184 | @echo "###" |
185 | @echo "### Key pair generated." |
186 | @echo "###" |
187 | |
188 | x509.genkey: |
189 | @echo Generating X.509 key generation config |
190 | @echo >x509.genkey "[ req ]" |
191 | @echo >>x509.genkey "default_bits = 4096" |
192 | @echo >>x509.genkey "distinguished_name = req_distinguished_name" |
193 | @echo >>x509.genkey "prompt = no" |
194 | @echo >>x509.genkey "string_mask = utf8only" |
195 | @echo >>x509.genkey "x509_extensions = myexts" |
196 | @echo >>x509.genkey |
197 | @echo >>x509.genkey "[ req_distinguished_name ]" |
198 | @echo >>x509.genkey "O = Magrathea" |
199 | @echo >>x509.genkey "CN = Glacier signing key" |
200 | @echo >>x509.genkey "emailAddress = slartibartfast@magrathea.h2g2" |
201 | @echo >>x509.genkey |
202 | @echo >>x509.genkey "[ myexts ]" |
203 | @echo >>x509.genkey "basicConstraints=critical,CA:FALSE" |
204 | @echo >>x509.genkey "keyUsage=digitalSignature" |
205 | @echo >>x509.genkey "subjectKeyIdentifier=hash" |
206 | @echo >>x509.genkey "authorityKeyIdentifier=keyid" |
207 | endif |
208 |
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