LXR linux/lib/Makefile

   1# SPDX-License-Identifier: GPL-2.0
   2#
   3# Makefile for some libs needed in the kernel.
   4#
   5
   6ccflags-remove-$(CONFIG_FUNCTION_TRACER) += $(CC_FLAGS_FTRACE)
   7
   8# These files are disabled because they produce lots of non-interesting and/or
   9# flaky coverage that is not a function of syscall inputs. For example,
  10# rbtree can be global and individual rotations don't correlate with inputs.
  11KCOV_INSTRUMENT_string.o := n
  12KCOV_INSTRUMENT_rbtree.o := n
  13KCOV_INSTRUMENT_list_debug.o := n
  14KCOV_INSTRUMENT_debugobjects.o := n
  15KCOV_INSTRUMENT_dynamic_debug.o := n
  16KCOV_INSTRUMENT_fault-inject.o := n
  17
  18# string.o implements standard library functions like memset/memcpy etc.
  19# Use -ffreestanding to ensure that the compiler does not try to "optimize"
  20# them into calls to themselves.
  21CFLAGS_string.o := -ffreestanding
  22
  23# Early boot use of cmdline, don't instrument it
  24ifdef CONFIG_AMD_MEM_ENCRYPT
  25KASAN_SANITIZE_string.o := n
  26
  27CFLAGS_string.o += -fno-stack-protector
  28endif
  29
  30lib-y := ctype.o string.o vsprintf.o cmdline.o \
  31         rbtree.o radix-tree.o timerqueue.o xarray.o \
  32         idr.o extable.o sha1.o irq_regs.o argv_split.o \
  33         flex_proportions.o ratelimit.o show_mem.o \
  34         is_single_threaded.o plist.o decompress.o kobject_uevent.o \
  35         earlycpio.o seq_buf.o siphash.o dec_and_lock.o \
  36         nmi_backtrace.o nodemask.o win_minmax.o memcat_p.o \
  37         buildid.o
  38
  39lib-$(CONFIG_PRINTK) += dump_stack.o
  40lib-$(CONFIG_SMP) += cpumask.o
  41
  42lib-y   += kobject.o klist.o
  43obj-y   += lockref.o
  44
  45obj-y += bcd.o sort.o parser.o debug_locks.o random32.o \
  46         bust_spinlocks.o kasprintf.o bitmap.o scatterlist.o \
  47         list_sort.o uuid.o iov_iter.o clz_ctz.o \
  48         bsearch.o find_bit.o llist.o memweight.o kfifo.o \
  49         percpu-refcount.o rhashtable.o \
  50         once.o refcount.o usercopy.o errseq.o bucket_locks.o \
  51         generic-radix-tree.o
  52obj-$(CONFIG_STRING_SELFTEST) += test_string.o
  53obj-y += string_helpers.o
  54obj-$(CONFIG_TEST_STRING_HELPERS) += test-string_helpers.o
  55obj-y += hexdump.o
  56obj-$(CONFIG_TEST_HEXDUMP) += test_hexdump.o
  57obj-y += kstrtox.o
  58obj-$(CONFIG_FIND_BIT_BENCHMARK) += find_bit_benchmark.o
  59obj-$(CONFIG_TEST_BPF) += test_bpf.o
  60obj-$(CONFIG_TEST_FIRMWARE) += test_firmware.o
  61obj-$(CONFIG_TEST_BITOPS) += test_bitops.o
  62CFLAGS_test_bitops.o += -Werror
  63obj-$(CONFIG_TEST_SYSCTL) += test_sysctl.o
  64obj-$(CONFIG_TEST_HASH) += test_hash.o test_siphash.o
  65obj-$(CONFIG_TEST_IDA) += test_ida.o
  66obj-$(CONFIG_KASAN_KUNIT_TEST) += test_kasan.o
  67CFLAGS_test_kasan.o += -fno-builtin
  68CFLAGS_test_kasan.o += $(call cc-disable-warning, vla)
  69obj-$(CONFIG_KASAN_MODULE_TEST) += test_kasan_module.o
  70CFLAGS_test_kasan_module.o += -fno-builtin
  71obj-$(CONFIG_TEST_UBSAN) += test_ubsan.o
  72CFLAGS_test_ubsan.o += $(call cc-disable-warning, vla)
  73UBSAN_SANITIZE_test_ubsan.o := y
  74obj-$(CONFIG_TEST_KSTRTOX) += test-kstrtox.o
  75obj-$(CONFIG_TEST_LIST_SORT) += test_list_sort.o
  76obj-$(CONFIG_TEST_MIN_HEAP) += test_min_heap.o
  77obj-$(CONFIG_TEST_LKM) += test_module.o
  78obj-$(CONFIG_TEST_VMALLOC) += test_vmalloc.o
  79obj-$(CONFIG_TEST_OVERFLOW) += test_overflow.o
  80obj-$(CONFIG_TEST_RHASHTABLE) += test_rhashtable.o
  81obj-$(CONFIG_TEST_SORT) += test_sort.o
  82obj-$(CONFIG_TEST_USER_COPY) += test_user_copy.o
  83obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_keys.o
  84obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_key_base.o
  85obj-$(CONFIG_TEST_PRINTF) += test_printf.o
  86obj-$(CONFIG_TEST_BITMAP) += test_bitmap.o
  87obj-$(CONFIG_TEST_STRSCPY) += test_strscpy.o
  88obj-$(CONFIG_TEST_UUID) += test_uuid.o
  89obj-$(CONFIG_TEST_XARRAY) += test_xarray.o
  90obj-$(CONFIG_TEST_PARMAN) += test_parman.o
  91obj-$(CONFIG_TEST_KMOD) += test_kmod.o
  92obj-$(CONFIG_TEST_DEBUG_VIRTUAL) += test_debug_virtual.o
  93obj-$(CONFIG_TEST_MEMCAT_P) += test_memcat_p.o
  94obj-$(CONFIG_TEST_OBJAGG) += test_objagg.o
  95CFLAGS_test_stackinit.o += $(call cc-disable-warning, switch-unreachable)
  96obj-$(CONFIG_TEST_STACKINIT) += test_stackinit.o
  97obj-$(CONFIG_TEST_BLACKHOLE_DEV) += test_blackhole_dev.o
  98obj-$(CONFIG_TEST_MEMINIT) += test_meminit.o
  99obj-$(CONFIG_TEST_LOCKUP) += test_lockup.o
 100obj-$(CONFIG_TEST_HMM) += test_hmm.o
 101obj-$(CONFIG_TEST_FREE_PAGES) += test_free_pages.o
 102
 103#
 104# CFLAGS for compiling floating point code inside the kernel. x86/Makefile turns
 105# off the generation of FPU/SSE* instructions for kernel proper but FPU_FLAGS
 106# get appended last to CFLAGS and thus override those previous compiler options.
 107#
 108FPU_CFLAGS := -msse -msse2
 109ifdef CONFIG_CC_IS_GCC
 110# Stack alignment mismatch, proceed with caution.
 111# GCC < 7.1 cannot compile code using `double` and -mpreferred-stack-boundary=3
 112# (8B stack alignment).
 113# See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53383
 114#
 115# The "-msse" in the first argument is there so that the
 116# -mpreferred-stack-boundary=3 build error:
 117#
 118#  -mpreferred-stack-boundary=3 is not between 4 and 12
 119#
 120# can be triggered. Otherwise gcc doesn't complain.
 121FPU_CFLAGS += -mhard-float
 122FPU_CFLAGS += $(call cc-option,-msse -mpreferred-stack-boundary=3,-mpreferred-stack-boundary=4)
 123endif
 124
 125obj-$(CONFIG_TEST_FPU) += test_fpu.o
 126CFLAGS_test_fpu.o += $(FPU_CFLAGS)
 127
 128obj-$(CONFIG_TEST_LIVEPATCH) += livepatch/
 129
 130obj-$(CONFIG_KUNIT) += kunit/
 131
 132ifeq ($(CONFIG_DEBUG_KOBJECT),y)
 133CFLAGS_kobject.o += -DDEBUG
 134CFLAGS_kobject_uevent.o += -DDEBUG
 135endif
 136
 137obj-$(CONFIG_DEBUG_INFO_REDUCED) += debug_info.o
 138CFLAGS_debug_info.o += $(call cc-option, -femit-struct-debug-detailed=any)
 139
 140obj-y += math/ crypto/
 141
 142obj-$(CONFIG_GENERIC_IOMAP) += iomap.o
 143obj-$(CONFIG_GENERIC_PCI_IOMAP) += pci_iomap.o
 144obj-$(CONFIG_HAS_IOMEM) += iomap_copy.o devres.o
 145obj-$(CONFIG_CHECK_SIGNATURE) += check_signature.o
 146obj-$(CONFIG_DEBUG_LOCKING_API_SELFTESTS) += locking-selftest.o
 147
 148lib-y += logic_pio.o
 149
 150obj-$(CONFIG_GENERIC_HWEIGHT) += hweight.o
 151
 152obj-$(CONFIG_BTREE) += btree.o
 153obj-$(CONFIG_INTERVAL_TREE) += interval_tree.o
 154obj-$(CONFIG_ASSOCIATIVE_ARRAY) += assoc_array.o
 155obj-$(CONFIG_DEBUG_PREEMPT) += smp_processor_id.o
 156obj-$(CONFIG_DEBUG_LIST) += list_debug.o
 157obj-$(CONFIG_DEBUG_OBJECTS) += debugobjects.o
 158
 159obj-$(CONFIG_BITREVERSE) += bitrev.o
 160obj-$(CONFIG_LINEAR_RANGES) += linear_ranges.o
 161obj-$(CONFIG_PACKING)   += packing.o
 162obj-$(CONFIG_CRC_CCITT) += crc-ccitt.o
 163obj-$(CONFIG_CRC16)     += crc16.o
 164obj-$(CONFIG_CRC_T10DIF)+= crc-t10dif.o
 165obj-$(CONFIG_CRC_ITU_T) += crc-itu-t.o
 166obj-$(CONFIG_CRC32)     += crc32.o
 167obj-$(CONFIG_CRC64)     += crc64.o
 168obj-$(CONFIG_CRC32_SELFTEST)    += crc32test.o
 169obj-$(CONFIG_CRC4)      += crc4.o
 170obj-$(CONFIG_CRC7)      += crc7.o
 171obj-$(CONFIG_LIBCRC32C) += libcrc32c.o
 172obj-$(CONFIG_CRC8)      += crc8.o
 173obj-$(CONFIG_XXHASH)    += xxhash.o
 174obj-$(CONFIG_GENERIC_ALLOCATOR) += genalloc.o
 175
 176obj-$(CONFIG_842_COMPRESS) += 842/
 177obj-$(CONFIG_842_DECOMPRESS) += 842/
 178obj-$(CONFIG_ZLIB_INFLATE) += zlib_inflate/
 179obj-$(CONFIG_ZLIB_DEFLATE) += zlib_deflate/
 180obj-$(CONFIG_ZLIB_DFLTCC) += zlib_dfltcc/
 181obj-$(CONFIG_REED_SOLOMON) += reed_solomon/
 182obj-$(CONFIG_BCH) += bch.o
 183obj-$(CONFIG_LZO_COMPRESS) += lzo/
 184obj-$(CONFIG_LZO_DECOMPRESS) += lzo/
 185obj-$(CONFIG_LZ4_COMPRESS) += lz4/
 186obj-$(CONFIG_LZ4HC_COMPRESS) += lz4/
 187obj-$(CONFIG_LZ4_DECOMPRESS) += lz4/
 188obj-$(CONFIG_ZSTD_COMPRESS) += zstd/
 189obj-$(CONFIG_ZSTD_DECOMPRESS) += zstd/
 190obj-$(CONFIG_XZ_DEC) += xz/
 191obj-$(CONFIG_RAID6_PQ) += raid6/
 192
 193lib-$(CONFIG_DECOMPRESS_GZIP) += decompress_inflate.o
 194lib-$(CONFIG_DECOMPRESS_BZIP2) += decompress_bunzip2.o
 195lib-$(CONFIG_DECOMPRESS_LZMA) += decompress_unlzma.o
 196lib-$(CONFIG_DECOMPRESS_XZ) += decompress_unxz.o
 197lib-$(CONFIG_DECOMPRESS_LZO) += decompress_unlzo.o
 198lib-$(CONFIG_DECOMPRESS_LZ4) += decompress_unlz4.o
 199lib-$(CONFIG_DECOMPRESS_ZSTD) += decompress_unzstd.o
 200
 201obj-$(CONFIG_TEXTSEARCH) += textsearch.o
 202obj-$(CONFIG_TEXTSEARCH_KMP) += ts_kmp.o
 203obj-$(CONFIG_TEXTSEARCH_BM) += ts_bm.o
 204obj-$(CONFIG_TEXTSEARCH_FSM) += ts_fsm.o
 205obj-$(CONFIG_SMP) += percpu_counter.o
 206obj-$(CONFIG_AUDIT_GENERIC) += audit.o
 207obj-$(CONFIG_AUDIT_COMPAT_GENERIC) += compat_audit.o
 208
 209obj-$(CONFIG_IOMMU_HELPER) += iommu-helper.o
 210obj-$(CONFIG_FAULT_INJECTION) += fault-inject.o
 211obj-$(CONFIG_FAULT_INJECTION_USERCOPY) += fault-inject-usercopy.o
 212obj-$(CONFIG_NOTIFIER_ERROR_INJECTION) += notifier-error-inject.o
 213obj-$(CONFIG_PM_NOTIFIER_ERROR_INJECT) += pm-notifier-error-inject.o
 214obj-$(CONFIG_NETDEV_NOTIFIER_ERROR_INJECT) += netdev-notifier-error-inject.o
 215obj-$(CONFIG_MEMORY_NOTIFIER_ERROR_INJECT) += memory-notifier-error-inject.o
 216obj-$(CONFIG_OF_RECONFIG_NOTIFIER_ERROR_INJECT) += \
 217        of-reconfig-notifier-error-inject.o
 218obj-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o
 219
 220lib-$(CONFIG_GENERIC_BUG) += bug.o
 221
 222obj-$(CONFIG_HAVE_ARCH_TRACEHOOK) += syscall.o
 223
 224obj-$(CONFIG_DYNAMIC_DEBUG_CORE) += dynamic_debug.o
 225obj-$(CONFIG_SYMBOLIC_ERRNAME) += errname.o
 226
 227obj-$(CONFIG_NLATTR) += nlattr.o
 228
 229obj-$(CONFIG_LRU_CACHE) += lru_cache.o
 230
 231obj-$(CONFIG_GENERIC_CSUM) += checksum.o
 232
 233obj-$(CONFIG_GENERIC_ATOMIC64) += atomic64.o
 234
 235obj-$(CONFIG_ATOMIC64_SELFTEST) += atomic64_test.o
 236
 237obj-$(CONFIG_CPU_RMAP) += cpu_rmap.o
 238
 239obj-$(CONFIG_DQL) += dynamic_queue_limits.o
 240
 241obj-$(CONFIG_GLOB) += glob.o
 242obj-$(CONFIG_GLOB_SELFTEST) += globtest.o
 243
 244obj-$(CONFIG_MPILIB) += mpi/
 245obj-$(CONFIG_DIMLIB) += dim/
 246obj-$(CONFIG_SIGNATURE) += digsig.o
 247
 248lib-$(CONFIG_CLZ_TAB) += clz_tab.o
 249
 250obj-$(CONFIG_GENERIC_STRNCPY_FROM_USER) += strncpy_from_user.o
 251obj-$(CONFIG_GENERIC_STRNLEN_USER) += strnlen_user.o
 252
 253obj-$(CONFIG_GENERIC_NET_UTILS) += net_utils.o
 254
 255obj-$(CONFIG_SG_SPLIT) += sg_split.o
 256obj-$(CONFIG_SG_POOL) += sg_pool.o
 257obj-$(CONFIG_MEMREGION) += memregion.o
 258obj-$(CONFIG_STMP_DEVICE) += stmp_device.o
 259obj-$(CONFIG_IRQ_POLL) += irq_poll.o
 260
 261# stackdepot.c should not be instrumented or call instrumented functions.
 262# Prevent the compiler from calling builtins like memcmp() or bcmp() from this
 263# file.
 264CFLAGS_stackdepot.o += -fno-builtin
 265obj-$(CONFIG_STACKDEPOT) += stackdepot.o
 266KASAN_SANITIZE_stackdepot.o := n
 267KCOV_INSTRUMENT_stackdepot.o := n
 268
 269libfdt_files = fdt.o fdt_ro.o fdt_wip.o fdt_rw.o fdt_sw.o fdt_strerror.o \
 270               fdt_empty_tree.o fdt_addresses.o
 271$(foreach file, $(libfdt_files), \
 272        $(eval CFLAGS_$(file) = -I $(srctree)/scripts/dtc/libfdt))
 273lib-$(CONFIG_LIBFDT) += $(libfdt_files)
 274
 275lib-$(CONFIG_BOOT_CONFIG) += bootconfig.o
 276
 277obj-$(CONFIG_RBTREE_TEST) += rbtree_test.o
 278obj-$(CONFIG_INTERVAL_TREE_TEST) += interval_tree_test.o
 279
 280obj-$(CONFIG_PERCPU_TEST) += percpu_test.o
 281
 282obj-$(CONFIG_ASN1) += asn1_decoder.o
 283obj-$(CONFIG_ASN1_ENCODER) += asn1_encoder.o
 284
 285obj-$(CONFIG_FONT_SUPPORT) += fonts/
 286
 287hostprogs       := gen_crc32table
 288hostprogs       += gen_crc64table
 289clean-files     := crc32table.h
 290clean-files     += crc64table.h
 291
 292$(obj)/crc32.o: $(obj)/crc32table.h
 293
 294quiet_cmd_crc32 = GEN     $@
 295      cmd_crc32 = $< > $@
 296
 297$(obj)/crc32table.h: $(obj)/gen_crc32table
 298        $(call cmd,crc32)
 299
 300$(obj)/crc64.o: $(obj)/crc64table.h
 301
 302quiet_cmd_crc64 = GEN     $@
 303      cmd_crc64 = $< > $@
 304
 305$(obj)/crc64table.h: $(obj)/gen_crc64table
 306        $(call cmd,crc64)
 307
 308#
 309# Build a fast OID lookip registry from include/linux/oid_registry.h
 310#
 311obj-$(CONFIG_OID_REGISTRY) += oid_registry.o
 312
 313$(obj)/oid_registry.o: $(obj)/oid_registry_data.c
 314
 315$(obj)/oid_registry_data.c: $(srctree)/include/linux/oid_registry.h \
 316                            $(src)/build_OID_registry
 317        $(call cmd,build_OID_registry)
 318
 319quiet_cmd_build_OID_registry = GEN     $@
 320      cmd_build_OID_registry = perl $(srctree)/$(src)/build_OID_registry $< $@
 321
 322clean-files     += oid_registry_data.c
 323
 324obj-$(CONFIG_UCS2_STRING) += ucs2_string.o
 325ifneq ($(CONFIG_UBSAN_TRAP),y)
 326obj-$(CONFIG_UBSAN) += ubsan.o
 327endif
 328
 329UBSAN_SANITIZE_ubsan.o := n
 330KASAN_SANITIZE_ubsan.o := n
 331KCSAN_SANITIZE_ubsan.o := n
 332CFLAGS_ubsan.o := -fno-stack-protector $(DISABLE_STACKLEAK_PLUGIN)
 333
 334obj-$(CONFIG_SBITMAP) += sbitmap.o
 335
 336obj-$(CONFIG_PARMAN) += parman.o
 337
 338# GCC library routines
 339obj-$(CONFIG_GENERIC_LIB_ASHLDI3) += ashldi3.o
 340obj-$(CONFIG_GENERIC_LIB_ASHRDI3) += ashrdi3.o
 341obj-$(CONFIG_GENERIC_LIB_LSHRDI3) += lshrdi3.o
 342obj-$(CONFIG_GENERIC_LIB_MULDI3) += muldi3.o
 343obj-$(CONFIG_GENERIC_LIB_CMPDI2) += cmpdi2.o
 344obj-$(CONFIG_GENERIC_LIB_UCMPDI2) += ucmpdi2.o
 345obj-$(CONFIG_OBJAGG) += objagg.o
 346
 347# pldmfw library
 348obj-$(CONFIG_PLDMFW) += pldmfw/
 349
 350# KUnit tests
 351CFLAGS_bitfield_kunit.o := $(call cc-option,-Wframe-larger-than=10240)
 352obj-$(CONFIG_BITFIELD_KUNIT) += bitfield_kunit.o
 353obj-$(CONFIG_LIST_KUNIT_TEST) += list-test.o
 354obj-$(CONFIG_LINEAR_RANGES_TEST) += test_linear_ranges.o
 355obj-$(CONFIG_BITS_TEST) += test_bits.o
 356obj-$(CONFIG_CMDLINE_KUNIT_TEST) += cmdline_kunit.o
 357
 358obj-$(CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED) += devmem_is_allowed.o
 359