toolchain/toolchain-common.in

   1 # Generic toolchain options
   2
   3 # we want gdb config in the middle of both source and external
   4 # toolchains, but mconf won't let us source the same file twice,
   5 # so put it here instead
   6 source "package/gdb/Config.in.host"
   7
   8 comment "Toolchain Generic Options"
   9
  10 # https://sourceware.org/bugzilla/show_bug.cgi?id=19615
  11 # Affect toolchains built with binutils 2.26 (fixed in binutils 2.26.1).
  12 config BR2_TOOLCHAIN_HAS_BINUTILS_BUG_19615
  13         bool
  14
  15 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64735
  16 # exception_ptr, nested_exception, and future from libstdc++ are not
  17 # available for architectures not supporting always lock-free atomic
  18 # ints before GCC 7
  19 config BR2_TOOLCHAIN_HAS_GCC_BUG_64735
  20         bool
  21         default y if BR2_nios2
  22         default y if BR2_ARM_CPU_ARMV4
  23         default y if BR2_ARM_CPU_ARMV5
  24         default y if BR2_sparc_v8
  25         default y if BR2_m68k_cf5208
  26         depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_7
  27
  28 config BR2_TOOLCHAIN_HAS_NATIVE_RPC
  29         bool
  30
  31 config BR2_USE_WCHAR
  32         bool
  33
  34 config BR2_ENABLE_LOCALE
  35         bool
  36
  37 config BR2_INSTALL_LIBSTDCPP
  38         bool
  39
  40 config BR2_TOOLCHAIN_HAS_FORTRAN
  41         bool
  42
  43 config BR2_TOOLCHAIN_HAS_THREADS
  44         bool
  45
  46 config BR2_TOOLCHAIN_HAS_THREADS_DEBUG
  47         bool
  48
  49 config BR2_TOOLCHAIN_HAS_THREADS_NPTL
  50         bool
  51
  52 config BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS
  53         bool
  54
  55 config BR2_TOOLCHAIN_HAS_SSP
  56         bool
  57
  58 config BR2_TOOLCHAIN_SUPPORTS_PIE
  59         bool
  60
  61 config BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_COPY
  62         bool "Copy gconv libraries"
  63         depends on BR2_TOOLCHAIN_USES_GLIBC
  64         help
  65           The gconv libraries are used to convert between different
  66           character sets (charsets).
  67
  68           Say 'y' if you need to store and/or display different charsets.
  69
  70 config BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_LIST
  71         string "Gconv libraries to copy"
  72         depends on BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_COPY
  73         help
  74           Set to the list of gconv libraries to copy.
  75           Leave empty to copy all gconv libraries.
  76
  77           Specify only the basename of the libraries, leave
  78           out the .so extension. Eg.:
  79             IBM850 ISO8859-15 UNICODE
  80
  81           Note: the full set of gconv libs are ~8MiB (on ARM).
  82
  83 # This boolean is true if the toolchain provides a built-in full
  84 # featured gettext implementation (glibc), and false if only a stub
  85 # gettext implementation is provided (uclibc, musl)
  86 config BR2_TOOLCHAIN_HAS_FULL_GETTEXT
  87         bool
  88
  89 config BR2_USE_MMU
  90         bool "Enable MMU support" if BR2_ARCH_HAS_MMU_OPTIONAL
  91         default y if BR2_ARCH_HAS_MMU_OPTIONAL || BR2_ARCH_HAS_MMU_MANDATORY
  92         help
  93           If your target has a MMU, you should say Y here.  If you
  94           are unsure, just say Y.
  95
  96 config BR2_TARGET_OPTIMIZATION
  97         string "Target Optimizations"
  98         default ""
  99         help
 100           Optimizations to use when building for the target host.
 101           NOTE: gcc optimization level is defined in build options.
 102
 103 config BR2_TARGET_LDFLAGS
 104         string "Target linker options"
 105         help
 106           Extra options to pass to the linker when building for the target.
 107
 108           Note that options with a '$' sign (eg. -Wl,-rpath='$ORIGIN/../lib')
 109           are not supported.
 110
 111 config BR2_ECLIPSE_REGISTER
 112         bool "Register toolchain within Eclipse Buildroot plug-in"
 113         help
 114           This options tells Buildroot to generate the necessary
 115           configuration files to make your toolchain appear within
 116           Eclipse, through the Eclipse Buildroot plugin.
 117
 118 # Options for packages to depend on, if they require at least a
 119 # specific version of the kernel headers.
 120 # Toolchains should choose the adequate option (ie. the highest
 121 # version, not all of them).
 122 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0
 123         bool
 124
 125 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1
 126         bool
 127         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0
 128
 129 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
 130         bool
 131         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1
 132
 133 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3
 134         bool
 135         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
 136
 137 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4
 138         bool
 139         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3
 140
 141 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
 142         bool
 143         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4
 144
 145 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6
 146         bool
 147         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
 148
 149 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
 150         bool
 151         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6
 152
 153 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8
 154         bool
 155         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
 156
 157 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9
 158         bool
 159         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8
 160
 161 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
 162         bool
 163         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9
 164
 165 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11
 166         bool
 167         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
 168
 169 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12
 170         bool
 171         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11
 172
 173 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
 174         bool
 175         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12
 176
 177 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
 178         bool
 179         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
 180
 181 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15
 182         bool
 183         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
 184
 185 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16
 186         bool
 187         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15
 188
 189 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17
 190         bool
 191         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16
 192
 193 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18
 194         bool
 195         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17
 196
 197 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19
 198         bool
 199         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18
 200
 201 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
 202         bool
 203         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19
 204
 205 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1
 206         bool
 207         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
 208
 209 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
 210         bool
 211         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1
 212
 213 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3
 214         bool
 215         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
 216
 217 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
 218         bool
 219         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3
 220
 221 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
 222         bool
 223         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
 224
 225 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6
 226         bool
 227         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
 228
 229 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7
 230         bool
 231         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6
 232
 233 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8
 234         bool
 235         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7
 236
 237 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9
 238         bool
 239         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8
 240
 241 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10
 242         bool
 243         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9
 244
 245 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11
 246         bool
 247         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10
 248
 249 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12
 250         bool
 251         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11
 252
 253 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13
 254         bool
 255         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12
 256
 257 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14
 258         bool
 259         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13
 260
 261 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15
 262         bool
 263         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14
 264
 265 # This order guarantees that the highest version is set, as kconfig
 266 # stops affecting a value on the first matching default.
 267 config BR2_TOOLCHAIN_HEADERS_AT_LEAST
 268         string
 269         default "4.15" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15
 270         default "4.14" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14
 271         default "4.13" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13
 272         default "4.12" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12
 273         default "4.11" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11
 274         default "4.10" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10
 275         default "4.9"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9
 276         default "4.8"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8
 277         default "4.7"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7
 278         default "4.6"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6
 279         default "4.5"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
 280         default "4.4"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
 281         default "4.3"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3
 282         default "4.2"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
 283         default "4.1"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1
 284         default "4.0"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
 285         default "3.19" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19
 286         default "3.18" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18
 287         default "3.17" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17
 288         default "3.16" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16
 289         default "3.15" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15
 290         default "3.14" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
 291         default "3.13" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
 292         default "3.12" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12
 293         default "3.11" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11
 294         default "3.10" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
 295         default "3.9"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9
 296         default "3.8"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8
 297         default "3.7"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
 298         default "3.6"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6
 299         default "3.5"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
 300         default "3.4"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4
 301         default "3.3"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3
 302         default "3.2"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
 303         default "3.1"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1
 304         default "3.0"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0
 305         default "2.6"
 306
 307 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
 308         bool
 309
 310 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
 311         bool
 312         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
 313
 314 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
 315         bool
 316         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
 317
 318 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
 319         bool
 320         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
 321
 322 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
 323         bool
 324         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
 325
 326 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
 327         bool
 328         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
 329
 330 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
 331         bool
 332         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
 333
 334 config BR2_TOOLCHAIN_GCC_AT_LEAST_5
 335         bool
 336         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
 337
 338 config BR2_TOOLCHAIN_GCC_AT_LEAST_6
 339         bool
 340         select BR2_TOOLCHAIN_GCC_AT_LEAST_5
 341
 342 config BR2_TOOLCHAIN_GCC_AT_LEAST_7
 343         bool
 344         select BR2_TOOLCHAIN_GCC_AT_LEAST_6
 345
 346 # This order guarantees that the highest version is set, as kconfig
 347 # stops affecting a value on the first matching default.
 348 config BR2_TOOLCHAIN_GCC_AT_LEAST
 349         string
 350         default "7"     if BR2_TOOLCHAIN_GCC_AT_LEAST_7
 351         default "6"     if BR2_TOOLCHAIN_GCC_AT_LEAST_6
 352         default "5"     if BR2_TOOLCHAIN_GCC_AT_LEAST_5
 353         default "4.9"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
 354         default "4.8"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
 355         default "4.7"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
 356         default "4.6"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
 357         default "4.5"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
 358         default "4.4"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
 359         default "4.3"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
 360
 361 config BR2_TOOLCHAIN_HAS_MNAN_OPTION
 362         bool
 363         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
 364
 365 config BR2_TOOLCHAIN_HAS_SYNC_1
 366         bool
 367         default y
 368         depends on !BR2_bfin
 369         depends on !BR2_m68k_cf
 370         depends on !BR2_microblaze
 371         depends on !BR2_sparc
 372         depends on !(BR2_arc && !BR2_ARC_ATOMIC_EXT)
 373
 374 config BR2_TOOLCHAIN_HAS_SYNC_2
 375         bool
 376         default y if BR2_TOOLCHAIN_HAS_SYNC_1
 377
 378 config BR2_TOOLCHAIN_HAS_SYNC_4
 379         bool
 380         default y
 381         depends on !BR2_m68k_cf
 382         depends on !BR2_sparc
 383         depends on !(BR2_arc && !BR2_ARC_ATOMIC_EXT)
 384
 385 # The availability of __sync for 8-byte types on ARM is somewhat
 386 # complicated:
 387 #
 388 #  - It appeared in gcc starting with gcc 4.7.
 389 #
 390 #  - On ARMv7, there is no problem, it can be directly implemented in
 391 #    userspace.
 392 #
 393 #  - On < ARMv7, it requires help from the kernel. Unfortunately, the
 394 #    libgcc code implementing 8-byte __sync with the help from the
 395 #    kernel calls __write() when a failure occurs, which is a function
 396 #    internal to glibc, not available in uClibc and musl. This means
 397 #    that the 8-byte __sync operations are not available on < ARMv7
 398 #    with uClibc and musl. This problem was fixed as part of gcc
 399 #    PR68059, which was backported to the gcc 5 branch, but isn't yet
 400 #    part of any gcc 5.x release.
 401 #
 402 config BR2_TOOLCHAIN_ARM_HAS_SYNC_8
 403         bool
 404         default y
 405         depends on BR2_arm || BR2_armeb
 406         depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
 407         depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_ARM_CPU_ARMV7A
 408
 409 # 8-byte intrinsics available on most x86 CPUs, except a few old ones
 410 config BR2_TOOLCHAIN_X86_HAS_SYNC_8
 411         bool
 412         default y
 413         depends on BR2_i386
 414         depends on !BR2_x86_i486
 415         depends on !BR2_x86_c3
 416         depends on !BR2_x86_winchip_c6
 417         depends on !BR2_x86_winchip2
 418
 419 # 8-byte intrinsics available:
 420 #  - On all 64 bits architecture
 421 #  - On a certain combinations of ARM platforms
 422 #  - On certain x86 32 bits CPUs
 423 config BR2_TOOLCHAIN_HAS_SYNC_8
 424         bool
 425         default y if BR2_ARCH_IS_64
 426         default y if BR2_TOOLCHAIN_ARM_HAS_SYNC_8
 427         default y if BR2_TOOLCHAIN_X86_HAS_SYNC_8
 428
 429 # libatomic is available since gcc 4.8, when thread support is
 430 # enabled. Also, libatomic doesn't recognize "uclinux" as a valid OS
 431 # part of the tuple, and is therefore not build on uclinux targets,
 432 # which is why BR2_BINFMT_FLAT configurations are excluded.
 433 config BR2_TOOLCHAIN_HAS_LIBATOMIC
 434         bool
 435         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 && \
 436                 BR2_TOOLCHAIN_HAS_THREADS && \
 437                 !BR2_BINFMT_FLAT
 438
 439 # __atomic intrinsics are available:
 440 # - with gcc 4.8, either through built-ins or libatomic, on all
 441 #   architectures. Since we don't want to separate the cases where
 442 #   libatomic is needed vs. not needed, we simplify thing and only
 443 #   support situations where libatomic is available, even if on some
 444 #   architectures libatomic is not strictly needed as all __atomic
 445 #   intrinsics might be built-in. The only case where libatomic is
 446 #   missing entirely is when the toolchain does not have support for
 447 #   threads. However, a package that does not need threads but still
 448 #   uses atomics is quite a corner case, which does not warrant the
 449 #   added complexity.
 450 # - with gcc 4.7, libatomic did not exist, so only built-ins are
 451 #   available. This means that __atomic can only be used in a subset
 452 #   of the architectures
 453 config BR2_TOOLCHAIN_HAS_ATOMIC
 454         bool
 455         default y if BR2_TOOLCHAIN_HAS_LIBATOMIC
 456         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_arm
 457         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_armeb
 458         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_xtensa
 459         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_ARCH_IS_64
 460
 461 # - libquadmath is not needed/available on all architectures (but gcc
 462 #   correctly handles this already).
 463 # - At least, libquadmath is available on:
 464 #   - i*86
 465 #   - x86_64
 466 # - When available, libquadmath requires wchar support.
 467 config BR2_TOOLCHAIN_HAS_LIBQUADMATH
 468         bool
 469         default y if BR2_i386 || BR2_x86_64