lib/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2 #
   3 # Makefile for some libs needed in the kernel.
   4 #
   5
   6 ccflags-remove-$(CONFIG_FUNCTION_TRACER) += $(CC_FLAGS_FTRACE)
   7
   8 # These files are disabled because they produce lots of non-interesting and/or
   9 # flaky coverage that is not a function of syscall inputs. For example,
  10 # rbtree can be global and individual rotations don't correlate with inputs.
  11 KCOV_INSTRUMENT_string.o := n
  12 KCOV_INSTRUMENT_rbtree.o := n
  13 KCOV_INSTRUMENT_list_debug.o := n
  14 KCOV_INSTRUMENT_debugobjects.o := n
  15 KCOV_INSTRUMENT_dynamic_debug.o := n
  16 KCOV_INSTRUMENT_fault-inject.o := n
  17
  18 # string.o implements standard library functions like memset/memcpy etc.
  19 # Use -ffreestanding to ensure that the compiler does not try to "optimize"
  20 # them into calls to themselves.
  21 CFLAGS_string.o := -ffreestanding
  22
  23 # Early boot use of cmdline, don't instrument it
  24 ifdef CONFIG_AMD_MEM_ENCRYPT
  25 KASAN_SANITIZE_string.o := n
  26
  27 CFLAGS_string.o += -fno-stack-protector
  28 endif
  29
  30 lib-y := ctype.o string.o vsprintf.o cmdline.o \
  31          rbtree.o radix-tree.o timerqueue.o xarray.o \
  32          maple_tree.o idr.o extable.o irq_regs.o argv_split.o \
  33          flex_proportions.o ratelimit.o show_mem.o \
  34          is_single_threaded.o plist.o decompress.o kobject_uevent.o \
  35          earlycpio.o seq_buf.o siphash.o dec_and_lock.o \
  36          nmi_backtrace.o win_minmax.o memcat_p.o \
  37          buildid.o
  38
  39 lib-$(CONFIG_PRINTK) += dump_stack.o
  40 lib-$(CONFIG_SMP) += cpumask.o
  41
  42 lib-y   += kobject.o klist.o
  43 obj-y   += lockref.o
  44
  45 obj-y += bcd.o sort.o parser.o debug_locks.o random32.o \
  46          bust_spinlocks.o kasprintf.o bitmap.o scatterlist.o \
  47          list_sort.o uuid.o iov_iter.o clz_ctz.o \
  48          bsearch.o find_bit.o llist.o memweight.o kfifo.o \
  49          percpu-refcount.o rhashtable.o base64.o \
  50          once.o refcount.o usercopy.o errseq.o bucket_locks.o \
  51          generic-radix-tree.o
  52 obj-$(CONFIG_STRING_SELFTEST) += test_string.o
  53 obj-y += string_helpers.o
  54 obj-$(CONFIG_TEST_STRING_HELPERS) += test-string_helpers.o
  55 obj-y += hexdump.o
  56 obj-$(CONFIG_TEST_HEXDUMP) += test_hexdump.o
  57 obj-y += kstrtox.o
  58 obj-$(CONFIG_FIND_BIT_BENCHMARK) += find_bit_benchmark.o
  59 obj-$(CONFIG_TEST_BPF) += test_bpf.o
  60 obj-$(CONFIG_TEST_FIRMWARE) += test_firmware.o
  61 obj-$(CONFIG_TEST_BITOPS) += test_bitops.o
  62 CFLAGS_test_bitops.o += -Werror
  63 obj-$(CONFIG_CPUMASK_KUNIT_TEST) += cpumask_kunit.o
  64 obj-$(CONFIG_TEST_SYSCTL) += test_sysctl.o
  65 obj-$(CONFIG_HASH_KUNIT_TEST) += test_hash.o
  66 obj-$(CONFIG_TEST_IDA) += test_ida.o
  67 obj-$(CONFIG_TEST_UBSAN) += test_ubsan.o
  68 CFLAGS_test_ubsan.o += $(call cc-disable-warning, vla)
  69 UBSAN_SANITIZE_test_ubsan.o := y
  70 obj-$(CONFIG_TEST_KSTRTOX) += test-kstrtox.o
  71 obj-$(CONFIG_TEST_LIST_SORT) += test_list_sort.o
  72 obj-$(CONFIG_TEST_MIN_HEAP) += test_min_heap.o
  73 obj-$(CONFIG_TEST_LKM) += test_module.o
  74 obj-$(CONFIG_TEST_VMALLOC) += test_vmalloc.o
  75 obj-$(CONFIG_TEST_RHASHTABLE) += test_rhashtable.o
  76 obj-$(CONFIG_TEST_SORT) += test_sort.o
  77 obj-$(CONFIG_TEST_USER_COPY) += test_user_copy.o
  78 obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_keys.o
  79 obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_key_base.o
  80 obj-$(CONFIG_TEST_DYNAMIC_DEBUG) += test_dynamic_debug.o
  81 obj-$(CONFIG_TEST_PRINTF) += test_printf.o
  82 obj-$(CONFIG_TEST_SCANF) += test_scanf.o
  83 obj-$(CONFIG_TEST_BITMAP) += test_bitmap.o
  84 obj-$(CONFIG_TEST_UUID) += test_uuid.o
  85 obj-$(CONFIG_TEST_XARRAY) += test_xarray.o
  86 obj-$(CONFIG_TEST_MAPLE_TREE) += test_maple_tree.o
  87 obj-$(CONFIG_TEST_PARMAN) += test_parman.o
  88 obj-$(CONFIG_TEST_KMOD) += test_kmod.o
  89 obj-$(CONFIG_TEST_DEBUG_VIRTUAL) += test_debug_virtual.o
  90 obj-$(CONFIG_TEST_MEMCAT_P) += test_memcat_p.o
  91 obj-$(CONFIG_TEST_OBJAGG) += test_objagg.o
  92 obj-$(CONFIG_TEST_BLACKHOLE_DEV) += test_blackhole_dev.o
  93 obj-$(CONFIG_TEST_MEMINIT) += test_meminit.o
  94 obj-$(CONFIG_TEST_LOCKUP) += test_lockup.o
  95 obj-$(CONFIG_TEST_HMM) += test_hmm.o
  96 obj-$(CONFIG_TEST_FREE_PAGES) += test_free_pages.o
  97 obj-$(CONFIG_KPROBES_SANITY_TEST) += test_kprobes.o
  98 obj-$(CONFIG_TEST_REF_TRACKER) += test_ref_tracker.o
  99 CFLAGS_test_fprobe.o += $(CC_FLAGS_FTRACE)
 100 obj-$(CONFIG_FPROBE_SANITY_TEST) += test_fprobe.o
 101 #
 102 # CFLAGS for compiling floating point code inside the kernel. x86/Makefile turns
 103 # off the generation of FPU/SSE* instructions for kernel proper but FPU_FLAGS
 104 # get appended last to CFLAGS and thus override those previous compiler options.
 105 #
 106 FPU_CFLAGS := -msse -msse2
 107 ifdef CONFIG_CC_IS_GCC
 108 # Stack alignment mismatch, proceed with caution.
 109 # GCC < 7.1 cannot compile code using `double` and -mpreferred-stack-boundary=3
 110 # (8B stack alignment).
 111 # See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53383
 112 #
 113 # The "-msse" in the first argument is there so that the
 114 # -mpreferred-stack-boundary=3 build error:
 115 #
 116 #  -mpreferred-stack-boundary=3 is not between 4 and 12
 117 #
 118 # can be triggered. Otherwise gcc doesn't complain.
 119 FPU_CFLAGS += -mhard-float
 120 FPU_CFLAGS += $(call cc-option,-msse -mpreferred-stack-boundary=3,-mpreferred-stack-boundary=4)
 121 endif
 122
 123 obj-$(CONFIG_TEST_FPU) += test_fpu.o
 124 CFLAGS_test_fpu.o += $(FPU_CFLAGS)
 125
 126 obj-$(CONFIG_TEST_LIVEPATCH) += livepatch/
 127
 128 obj-$(CONFIG_KUNIT) += kunit/
 129
 130 ifeq ($(CONFIG_DEBUG_KOBJECT),y)
 131 CFLAGS_kobject.o += -DDEBUG
 132 CFLAGS_kobject_uevent.o += -DDEBUG
 133 endif
 134
 135 obj-$(CONFIG_DEBUG_INFO_REDUCED) += debug_info.o
 136 CFLAGS_debug_info.o += $(call cc-option, -femit-struct-debug-detailed=any)
 137
 138 obj-y += math/ crypto/
 139
 140 obj-$(CONFIG_GENERIC_IOMAP) += iomap.o
 141 obj-$(CONFIG_GENERIC_PCI_IOMAP) += pci_iomap.o
 142 obj-$(CONFIG_HAS_IOMEM) += iomap_copy.o devres.o
 143 obj-$(CONFIG_CHECK_SIGNATURE) += check_signature.o
 144 obj-$(CONFIG_DEBUG_LOCKING_API_SELFTESTS) += locking-selftest.o
 145
 146 lib-y += logic_pio.o
 147
 148 lib-$(CONFIG_INDIRECT_IOMEM) += logic_iomem.o
 149
 150 obj-$(CONFIG_TRACE_MMIO_ACCESS) += trace_readwrite.o
 151
 152 obj-$(CONFIG_GENERIC_HWEIGHT) += hweight.o
 153
 154 obj-$(CONFIG_BTREE) += btree.o
 155 obj-$(CONFIG_INTERVAL_TREE) += interval_tree.o
 156 obj-$(CONFIG_ASSOCIATIVE_ARRAY) += assoc_array.o
 157 obj-$(CONFIG_DEBUG_PREEMPT) += smp_processor_id.o
 158 obj-$(CONFIG_DEBUG_LIST) += list_debug.o
 159 obj-$(CONFIG_DEBUG_OBJECTS) += debugobjects.o
 160
 161 obj-$(CONFIG_BITREVERSE) += bitrev.o
 162 obj-$(CONFIG_LINEAR_RANGES) += linear_ranges.o
 163 obj-$(CONFIG_PACKING)   += packing.o
 164 obj-$(CONFIG_CRC_CCITT) += crc-ccitt.o
 165 obj-$(CONFIG_CRC16)     += crc16.o
 166 obj-$(CONFIG_CRC_T10DIF)+= crc-t10dif.o
 167 obj-$(CONFIG_CRC_ITU_T) += crc-itu-t.o
 168 obj-$(CONFIG_CRC32)     += crc32.o
 169 obj-$(CONFIG_CRC64)     += crc64.o
 170 obj-$(CONFIG_CRC32_SELFTEST)    += crc32test.o
 171 obj-$(CONFIG_CRC4)      += crc4.o
 172 obj-$(CONFIG_CRC7)      += crc7.o
 173 obj-$(CONFIG_LIBCRC32C) += libcrc32c.o
 174 obj-$(CONFIG_CRC8)      += crc8.o
 175 obj-$(CONFIG_CRC64_ROCKSOFT) += crc64-rocksoft.o
 176 obj-$(CONFIG_XXHASH)    += xxhash.o
 177 obj-$(CONFIG_GENERIC_ALLOCATOR) += genalloc.o
 178
 179 obj-$(CONFIG_842_COMPRESS) += 842/
 180 obj-$(CONFIG_842_DECOMPRESS) += 842/
 181 obj-$(CONFIG_ZLIB_INFLATE) += zlib_inflate/
 182 obj-$(CONFIG_ZLIB_DEFLATE) += zlib_deflate/
 183 obj-$(CONFIG_ZLIB_DFLTCC) += zlib_dfltcc/
 184 obj-$(CONFIG_REED_SOLOMON) += reed_solomon/
 185 obj-$(CONFIG_BCH) += bch.o
 186 obj-$(CONFIG_LZO_COMPRESS) += lzo/
 187 obj-$(CONFIG_LZO_DECOMPRESS) += lzo/
 188 obj-$(CONFIG_LZ4_COMPRESS) += lz4/
 189 obj-$(CONFIG_LZ4HC_COMPRESS) += lz4/
 190 obj-$(CONFIG_LZ4_DECOMPRESS) += lz4/
 191 obj-$(CONFIG_ZSTD_COMPRESS) += zstd/
 192 obj-$(CONFIG_ZSTD_DECOMPRESS) += zstd/
 193 obj-$(CONFIG_XZ_DEC) += xz/
 194 obj-$(CONFIG_RAID6_PQ) += raid6/
 195
 196 lib-$(CONFIG_DECOMPRESS_GZIP) += decompress_inflate.o
 197 lib-$(CONFIG_DECOMPRESS_BZIP2) += decompress_bunzip2.o
 198 lib-$(CONFIG_DECOMPRESS_LZMA) += decompress_unlzma.o
 199 lib-$(CONFIG_DECOMPRESS_XZ) += decompress_unxz.o
 200 lib-$(CONFIG_DECOMPRESS_LZO) += decompress_unlzo.o
 201 lib-$(CONFIG_DECOMPRESS_LZ4) += decompress_unlz4.o
 202 lib-$(CONFIG_DECOMPRESS_ZSTD) += decompress_unzstd.o
 203
 204 obj-$(CONFIG_TEXTSEARCH) += textsearch.o
 205 obj-$(CONFIG_TEXTSEARCH_KMP) += ts_kmp.o
 206 obj-$(CONFIG_TEXTSEARCH_BM) += ts_bm.o
 207 obj-$(CONFIG_TEXTSEARCH_FSM) += ts_fsm.o
 208 obj-$(CONFIG_SMP) += percpu_counter.o
 209 obj-$(CONFIG_AUDIT_GENERIC) += audit.o
 210 obj-$(CONFIG_AUDIT_COMPAT_GENERIC) += compat_audit.o
 211
 212 obj-$(CONFIG_IOMMU_HELPER) += iommu-helper.o
 213 obj-$(CONFIG_FAULT_INJECTION) += fault-inject.o
 214 obj-$(CONFIG_FAULT_INJECTION_USERCOPY) += fault-inject-usercopy.o
 215 obj-$(CONFIG_NOTIFIER_ERROR_INJECTION) += notifier-error-inject.o
 216 obj-$(CONFIG_PM_NOTIFIER_ERROR_INJECT) += pm-notifier-error-inject.o
 217 obj-$(CONFIG_NETDEV_NOTIFIER_ERROR_INJECT) += netdev-notifier-error-inject.o
 218 obj-$(CONFIG_MEMORY_NOTIFIER_ERROR_INJECT) += memory-notifier-error-inject.o
 219 obj-$(CONFIG_OF_RECONFIG_NOTIFIER_ERROR_INJECT) += \
 220         of-reconfig-notifier-error-inject.o
 221 obj-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o
 222
 223 lib-$(CONFIG_GENERIC_BUG) += bug.o
 224
 225 obj-$(CONFIG_HAVE_ARCH_TRACEHOOK) += syscall.o
 226
 227 obj-$(CONFIG_DYNAMIC_DEBUG_CORE) += dynamic_debug.o
 228 obj-$(CONFIG_SYMBOLIC_ERRNAME) += errname.o
 229
 230 obj-$(CONFIG_NLATTR) += nlattr.o
 231
 232 obj-$(CONFIG_LRU_CACHE) += lru_cache.o
 233
 234 obj-$(CONFIG_GENERIC_CSUM) += checksum.o
 235
 236 obj-$(CONFIG_GENERIC_ATOMIC64) += atomic64.o
 237
 238 obj-$(CONFIG_ATOMIC64_SELFTEST) += atomic64_test.o
 239
 240 obj-$(CONFIG_CPU_RMAP) += cpu_rmap.o
 241
 242 obj-$(CONFIG_DQL) += dynamic_queue_limits.o
 243
 244 obj-$(CONFIG_GLOB) += glob.o
 245 obj-$(CONFIG_GLOB_SELFTEST) += globtest.o
 246
 247 obj-$(CONFIG_MPILIB) += mpi/
 248 obj-$(CONFIG_DIMLIB) += dim/
 249 obj-$(CONFIG_SIGNATURE) += digsig.o
 250
 251 lib-$(CONFIG_CLZ_TAB) += clz_tab.o
 252
 253 obj-$(CONFIG_GENERIC_STRNCPY_FROM_USER) += strncpy_from_user.o
 254 obj-$(CONFIG_GENERIC_STRNLEN_USER) += strnlen_user.o
 255
 256 obj-$(CONFIG_GENERIC_NET_UTILS) += net_utils.o
 257
 258 obj-$(CONFIG_SG_SPLIT) += sg_split.o
 259 obj-$(CONFIG_SG_POOL) += sg_pool.o
 260 obj-$(CONFIG_MEMREGION) += memregion.o
 261 obj-$(CONFIG_STMP_DEVICE) += stmp_device.o
 262 obj-$(CONFIG_IRQ_POLL) += irq_poll.o
 263
 264 obj-$(CONFIG_POLYNOMIAL) += polynomial.o
 265
 266 # stackdepot.c should not be instrumented or call instrumented functions.
 267 # Prevent the compiler from calling builtins like memcmp() or bcmp() from this
 268 # file.
 269 CFLAGS_stackdepot.o += -fno-builtin
 270 obj-$(CONFIG_STACKDEPOT) += stackdepot.o
 271 KASAN_SANITIZE_stackdepot.o := n
 272 # In particular, instrumenting stackdepot.c with KMSAN will result in infinite
 273 # recursion.
 274 KMSAN_SANITIZE_stackdepot.o := n
 275 KCOV_INSTRUMENT_stackdepot.o := n
 276
 277 obj-$(CONFIG_REF_TRACKER) += ref_tracker.o
 278
 279 libfdt_files = fdt.o fdt_ro.o fdt_wip.o fdt_rw.o fdt_sw.o fdt_strerror.o \
 280                fdt_empty_tree.o fdt_addresses.o
 281 $(foreach file, $(libfdt_files), \
 282         $(eval CFLAGS_$(file) = -I $(srctree)/scripts/dtc/libfdt))
 283 lib-$(CONFIG_LIBFDT) += $(libfdt_files)
 284
 285 obj-$(CONFIG_BOOT_CONFIG) += bootconfig.o
 286 obj-$(CONFIG_BOOT_CONFIG_EMBED) += bootconfig-data.o
 287
 288 $(obj)/bootconfig-data.o: $(obj)/default.bconf
 289
 290 targets += default.bconf
 291 filechk_defbconf = cat $(or $(real-prereqs), /dev/null)
 292 $(obj)/default.bconf: $(CONFIG_BOOT_CONFIG_EMBED_FILE) FORCE
 293         $(call filechk,defbconf)
 294
 295 obj-$(CONFIG_RBTREE_TEST) += rbtree_test.o
 296 obj-$(CONFIG_INTERVAL_TREE_TEST) += interval_tree_test.o
 297
 298 obj-$(CONFIG_PERCPU_TEST) += percpu_test.o
 299
 300 obj-$(CONFIG_ASN1) += asn1_decoder.o
 301 obj-$(CONFIG_ASN1_ENCODER) += asn1_encoder.o
 302
 303 obj-$(CONFIG_FONT_SUPPORT) += fonts/
 304
 305 hostprogs       := gen_crc32table
 306 hostprogs       += gen_crc64table
 307 clean-files     := crc32table.h
 308 clean-files     += crc64table.h
 309
 310 $(obj)/crc32.o: $(obj)/crc32table.h
 311
 312 quiet_cmd_crc32 = GEN     $@
 313       cmd_crc32 = $< > $@
 314
 315 $(obj)/crc32table.h: $(obj)/gen_crc32table
 316         $(call cmd,crc32)
 317
 318 $(obj)/crc64.o: $(obj)/crc64table.h
 319
 320 quiet_cmd_crc64 = GEN     $@
 321       cmd_crc64 = $< > $@
 322
 323 $(obj)/crc64table.h: $(obj)/gen_crc64table
 324         $(call cmd,crc64)
 325
 326 #
 327 # Build a fast OID lookip registry from include/linux/oid_registry.h
 328 #
 329 obj-$(CONFIG_OID_REGISTRY) += oid_registry.o
 330
 331 $(obj)/oid_registry.o: $(obj)/oid_registry_data.c
 332
 333 $(obj)/oid_registry_data.c: $(srctree)/include/linux/oid_registry.h \
 334                             $(src)/build_OID_registry
 335         $(call cmd,build_OID_registry)
 336
 337 quiet_cmd_build_OID_registry = GEN     $@
 338       cmd_build_OID_registry = perl $(srctree)/$(src)/build_OID_registry $< $@
 339
 340 clean-files     += oid_registry_data.c
 341
 342 obj-$(CONFIG_UCS2_STRING) += ucs2_string.o
 343 obj-$(CONFIG_UBSAN) += ubsan.o
 344
 345 UBSAN_SANITIZE_ubsan.o := n
 346 KASAN_SANITIZE_ubsan.o := n
 347 KCSAN_SANITIZE_ubsan.o := n
 348 CFLAGS_ubsan.o := -fno-stack-protector $(DISABLE_STACKLEAK_PLUGIN)
 349
 350 obj-$(CONFIG_SBITMAP) += sbitmap.o
 351
 352 obj-$(CONFIG_PARMAN) += parman.o
 353
 354 obj-y += group_cpus.o
 355
 356 # GCC library routines
 357 obj-$(CONFIG_GENERIC_LIB_ASHLDI3) += ashldi3.o
 358 obj-$(CONFIG_GENERIC_LIB_ASHRDI3) += ashrdi3.o
 359 obj-$(CONFIG_GENERIC_LIB_LSHRDI3) += lshrdi3.o
 360 obj-$(CONFIG_GENERIC_LIB_MULDI3) += muldi3.o
 361 obj-$(CONFIG_GENERIC_LIB_CMPDI2) += cmpdi2.o
 362 obj-$(CONFIG_GENERIC_LIB_UCMPDI2) += ucmpdi2.o
 363 obj-$(CONFIG_OBJAGG) += objagg.o
 364
 365 # pldmfw library
 366 obj-$(CONFIG_PLDMFW) += pldmfw/
 367
 368 # KUnit tests
 369 CFLAGS_bitfield_kunit.o := $(DISABLE_STRUCTLEAK_PLUGIN)
 370 obj-$(CONFIG_BITFIELD_KUNIT) += bitfield_kunit.o
 371 obj-$(CONFIG_LIST_KUNIT_TEST) += list-test.o
 372 obj-$(CONFIG_LINEAR_RANGES_TEST) += test_linear_ranges.o
 373 obj-$(CONFIG_BITS_TEST) += test_bits.o
 374 obj-$(CONFIG_CMDLINE_KUNIT_TEST) += cmdline_kunit.o
 375 obj-$(CONFIG_SLUB_KUNIT_TEST) += slub_kunit.o
 376 obj-$(CONFIG_MEMCPY_KUNIT_TEST) += memcpy_kunit.o
 377 obj-$(CONFIG_IS_SIGNED_TYPE_KUNIT_TEST) += is_signed_type_kunit.o
 378 CFLAGS_overflow_kunit.o = $(call cc-disable-warning, tautological-constant-out-of-range-compare)
 379 obj-$(CONFIG_OVERFLOW_KUNIT_TEST) += overflow_kunit.o
 380 CFLAGS_stackinit_kunit.o += $(call cc-disable-warning, switch-unreachable)
 381 obj-$(CONFIG_STACKINIT_KUNIT_TEST) += stackinit_kunit.o
 382 CFLAGS_fortify_kunit.o += $(call cc-disable-warning, unsequenced)
 383 CFLAGS_fortify_kunit.o += $(DISABLE_STRUCTLEAK_PLUGIN)
 384 obj-$(CONFIG_FORTIFY_KUNIT_TEST) += fortify_kunit.o
 385 obj-$(CONFIG_STRSCPY_KUNIT_TEST) += strscpy_kunit.o
 386 obj-$(CONFIG_SIPHASH_KUNIT_TEST) += siphash_kunit.o
 387
 388 obj-$(CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED) += devmem_is_allowed.o
 389
 390 # FORTIFY_SOURCE compile-time behavior tests
 391 TEST_FORTIFY_SRCS = $(wildcard $(srctree)/$(src)/test_fortify/*-*.c)
 392 TEST_FORTIFY_LOGS = $(patsubst $(srctree)/$(src)/%.c, %.log, $(TEST_FORTIFY_SRCS))
 393 TEST_FORTIFY_LOG = test_fortify.log
 394
 395 quiet_cmd_test_fortify = TEST    $@
 396       cmd_test_fortify = $(CONFIG_SHELL) $(srctree)/scripts/test_fortify.sh \
 397                         $< $@ "$(NM)" $(CC) $(c_flags) \
 398                         $(call cc-disable-warning,fortify-source) \
 399                         -DKBUILD_EXTRA_WARN1
 400
 401 targets += $(TEST_FORTIFY_LOGS)
 402 clean-files += $(TEST_FORTIFY_LOGS)
 403 clean-files += $(addsuffix .o, $(TEST_FORTIFY_LOGS))
 404 $(obj)/test_fortify/%.log: $(src)/test_fortify/%.c \
 405                            $(src)/test_fortify/test_fortify.h \
 406                            $(srctree)/include/linux/fortify-string.h \
 407                            $(srctree)/scripts/test_fortify.sh \
 408                            FORCE
 409         $(call if_changed,test_fortify)
 410
 411 quiet_cmd_gen_fortify_log = GEN     $@
 412       cmd_gen_fortify_log = cat </dev/null $(filter-out FORCE,$^) 2>/dev/null > $@ || true
 413
 414 targets += $(TEST_FORTIFY_LOG)
 415 clean-files += $(TEST_FORTIFY_LOG)
 416 $(obj)/$(TEST_FORTIFY_LOG): $(addprefix $(obj)/, $(TEST_FORTIFY_LOGS)) FORCE
 417         $(call if_changed,gen_fortify_log)
 418
 419 # Fake dependency to trigger the fortify tests.
 420 ifeq ($(CONFIG_FORTIFY_SOURCE),y)
 421 $(obj)/string.o: $(obj)/$(TEST_FORTIFY_LOG)
 422 endif