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 # https://sourceware.org/bugzilla/show_bug.cgi?id=19405
   9 config BR2_TOOLCHAIN_HAS_BINUTILS_BUG_19405
  10         bool
  11
  12 config BR2_TOOLCHAIN_HAS_NATIVE_RPC
  13         bool
  14
  15 config BR2_USE_WCHAR
  16         bool
  17
  18 config BR2_ENABLE_LOCALE
  19         bool
  20
  21 config BR2_INSTALL_LIBSTDCPP
  22         bool
  23
  24 config BR2_TOOLCHAIN_HAS_FORTRAN
  25         bool
  26
  27 config BR2_TOOLCHAIN_HAS_THREADS
  28         bool
  29
  30 config BR2_TOOLCHAIN_HAS_THREADS_DEBUG
  31         bool
  32
  33 config BR2_TOOLCHAIN_HAS_THREADS_NPTL
  34         bool
  35
  36 config BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS
  37         bool
  38
  39 config BR2_TOOLCHAIN_HAS_SSP
  40         bool
  41
  42 config BR2_TOOLCHAIN_SUPPORTS_PIE
  43         bool
  44
  45 config BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_COPY
  46         bool "Copy gconv libraries"
  47         depends on BR2_TOOLCHAIN_USES_GLIBC
  48         help
  49           The gconv libraries are used to convert between different
  50           character sets (charsets).
  51
  52           Say 'y' if you need to store and/or display different charsets.
  53
  54 config BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_LIST
  55         string "Gconv libraries to copy"
  56         depends on BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_COPY
  57         help
  58           Set to the list of gconv libraries to copy.
  59           Leave empty to copy all gconv libraries.
  60
  61           Specify only the basename of the libraries, leave
  62           out the .so extension. Eg.:
  63             IBM850 ISO8859-15 UNICODE
  64
  65           Note: the full set of gconv libs are ~8MiB (on ARM).
  66
  67 # glibc and eglibc directly include gettext, so a separatly compiled
  68 # gettext isn't needed and shouldn't be built to avoid conflicts. Some
  69 # packages always need gettext, other packages only need gettext when
  70 # locale support is enabled. See the documentation for how packages
  71 # should rely on the following two options.
  72
  73 config BR2_NEEDS_GETTEXT
  74         bool
  75         default y if BR2_TOOLCHAIN_USES_UCLIBC
  76
  77 config BR2_NEEDS_GETTEXT_IF_LOCALE
  78         bool
  79         default y if (BR2_NEEDS_GETTEXT && BR2_ENABLE_LOCALE)
  80
  81 config BR2_USE_MMU
  82         bool "Enable MMU support" if BR2_ARCH_HAS_MMU_OPTIONAL
  83         default y if BR2_ARCH_HAS_MMU_OPTIONAL || BR2_ARCH_HAS_MMU_MANDATORY
  84         help
  85           If your target has a MMU, you should say Y here.  If you
  86           are unsure, just say Y.
  87
  88 config BR2_TARGET_OPTIMIZATION
  89         string "Target Optimizations"
  90         default ""
  91         help
  92           Optimizations to use when building for the target host.
  93           NOTE: gcc optimization level is defined in build options.
  94
  95 config BR2_TARGET_LDFLAGS
  96         string "Target linker options"
  97         help
  98           Extra options to pass to the linker when building for the target.
  99
 100           Note that options with a '$' sign (eg. -Wl,-rpath='$ORIGIN/../lib')
 101           are not supported.
 102
 103 config BR2_ECLIPSE_REGISTER
 104         bool "Register toolchain within Eclipse Buildroot plug-in"
 105         help
 106           This options tells Buildroot to generate the necessary
 107           configuration files to make your toolchain appear within
 108           Eclipse, through the Eclipse Buildroot plugin.
 109
 110 # Options for packages to depend on, if they require at least a
 111 # specific version of the kernel headers.
 112 # Toolchains should choose the adequate option (ie. the highest
 113 # version, not all of them).
 114 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0
 115         bool
 116
 117 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1
 118         bool
 119         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0
 120
 121 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
 122         bool
 123         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1
 124
 125 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3
 126         bool
 127         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
 128
 129 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4
 130         bool
 131         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3
 132
 133 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
 134         bool
 135         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4
 136
 137 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6
 138         bool
 139         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
 140
 141 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
 142         bool
 143         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6
 144
 145 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8
 146         bool
 147         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
 148
 149 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9
 150         bool
 151         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8
 152
 153 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
 154         bool
 155         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9
 156
 157 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11
 158         bool
 159         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
 160
 161 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12
 162         bool
 163         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11
 164
 165 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
 166         bool
 167         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12
 168
 169 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
 170         bool
 171         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
 172
 173 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15
 174         bool
 175         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
 176
 177 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16
 178         bool
 179         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15
 180
 181 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17
 182         bool
 183         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16
 184
 185 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18
 186         bool
 187         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17
 188
 189 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19
 190         bool
 191         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18
 192
 193 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
 194         bool
 195         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19
 196
 197 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1
 198         bool
 199         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
 200
 201 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
 202         bool
 203         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1
 204
 205 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3
 206         bool
 207         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
 208
 209 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
 210         bool
 211         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3
 212
 213 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
 214         bool
 215         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
 216
 217 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6
 218         bool
 219         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
 220
 221 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7
 222         bool
 223         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6
 224
 225 config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8
 226         bool
 227         select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7
 228
 229 # This order guarantees that the highest version is set, as kconfig
 230 # stops affecting a value on the first matching default.
 231 config BR2_TOOLCHAIN_HEADERS_AT_LEAST
 232         string
 233         default "4.8"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8
 234         default "4.7"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7
 235         default "4.6"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6
 236         default "4.5"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
 237         default "4.4"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
 238         default "4.3"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3
 239         default "4.2"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
 240         default "4.1"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1
 241         default "4.0"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
 242         default "3.19" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19
 243         default "3.18" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18
 244         default "3.17" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17
 245         default "3.16" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16
 246         default "3.15" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15
 247         default "3.14" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
 248         default "3.13" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
 249         default "3.12" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12
 250         default "3.11" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11
 251         default "3.10" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
 252         default "3.9"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9
 253         default "3.8"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8
 254         default "3.7"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
 255         default "3.6"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6
 256         default "3.5"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
 257         default "3.4"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4
 258         default "3.3"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3
 259         default "3.2"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
 260         default "3.1"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1
 261         default "3.0"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0
 262         default "2.6"
 263
 264 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
 265         bool
 266
 267 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
 268         bool
 269         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
 270
 271 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
 272         bool
 273         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
 274
 275 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
 276         bool
 277         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
 278
 279 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
 280         bool
 281         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
 282
 283 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
 284         bool
 285         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
 286
 287 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
 288         bool
 289         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
 290
 291 config BR2_TOOLCHAIN_GCC_AT_LEAST_5
 292         bool
 293         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
 294
 295 config BR2_TOOLCHAIN_GCC_AT_LEAST_6
 296         bool
 297         select BR2_TOOLCHAIN_GCC_AT_LEAST_5
 298
 299 # This order guarantees that the highest version is set, as kconfig
 300 # stops affecting a value on the first matching default.
 301 config BR2_TOOLCHAIN_GCC_AT_LEAST
 302         string
 303         default "6"     if BR2_TOOLCHAIN_GCC_AT_LEAST_6
 304         default "5"     if BR2_TOOLCHAIN_GCC_AT_LEAST_5
 305         default "4.9"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
 306         default "4.8"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
 307         default "4.7"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
 308         default "4.6"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
 309         default "4.5"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
 310         default "4.4"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
 311         default "4.3"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
 312
 313 config BR2_TOOLCHAIN_HAS_SYNC_1
 314         bool
 315         default y
 316         depends on !BR2_bfin
 317         depends on !BR2_m68k_cf
 318         depends on !BR2_microblaze
 319         depends on !BR2_sparc
 320         depends on !(BR2_arc && !BR2_ARC_ATOMIC_EXT)
 321
 322 config BR2_TOOLCHAIN_HAS_SYNC_2
 323         bool
 324         default y if BR2_TOOLCHAIN_HAS_SYNC_1
 325
 326 config BR2_TOOLCHAIN_HAS_SYNC_4
 327         bool
 328         default y
 329         depends on !BR2_m68k_cf
 330         depends on !BR2_sparc
 331         depends on !(BR2_arc && !BR2_ARC_ATOMIC_EXT)
 332
 333 # The availability of __sync for 8-byte types on ARM is somewhat
 334 # complicated:
 335 #
 336 #  - It appeared in gcc starting with gcc 4.7.
 337 #
 338 #  - On ARMv7, there is no problem, it can be directly implemented in
 339 #    userspace.
 340 #
 341 #  - On < ARMv7, it requires help from the kernel. Unfortunately, the
 342 #    libgcc code implementing 8-byte __sync with the help from the
 343 #    kernel calls __write() when a failure occurs, which is a function
 344 #    internal to glibc, not available in uClibc and musl. This means
 345 #    that the 8-byte __sync operations are not available on < ARMv7
 346 #    with uClibc and musl. This problem was fixed as part of gcc
 347 #    PR68059, which was backported to the gcc 5 branch, but isn't yet
 348 #    part of any gcc 5.x release.
 349 #
 350 config BR2_TOOLCHAIN_ARM_HAS_SYNC_8
 351         bool
 352         default y
 353         depends on BR2_arm || BR2_armeb
 354         depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
 355         depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_ARM_CPU_ARMV7A
 356
 357 # 8-byte intrinsics available on most x86 CPUs, except a few old ones
 358 config BR2_TOOLCHAIN_X86_HAS_SYNC_8
 359         bool
 360         default y
 361         depends on BR2_i386
 362         depends on !BR2_x86_i486
 363         depends on !BR2_x86_c3
 364         depends on !BR2_x86_winchip_c6
 365         depends on !BR2_x86_winchip2
 366
 367 # 8-byte intrinsics available:
 368 #  - On all 64 bits architecture
 369 #  - On a certain combinations of ARM platforms
 370 #  - On certain x86 32 bits CPUs
 371 config BR2_TOOLCHAIN_HAS_SYNC_8
 372         bool
 373         default y if BR2_ARCH_IS_64
 374         default y if BR2_TOOLCHAIN_ARM_HAS_SYNC_8
 375         default y if BR2_TOOLCHAIN_X86_HAS_SYNC_8
 376
 377 # libatomic is available since gcc 4.8, when thread support is
 378 # enabled. Also, libatomic doesn't recognize "uclinux" as a valid OS
 379 # part of the tuple, and is therefore not build on uclinux targets,
 380 # which is why BR2_BINFMT_FLAT configurations are excluded.
 381 config BR2_TOOLCHAIN_HAS_LIBATOMIC
 382         bool
 383         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 && \
 384                 BR2_TOOLCHAIN_HAS_THREADS && \
 385                 !BR2_BINFMT_FLAT
 386
 387 # __atomic intrinsics are available:
 388 # - with gcc 4.8, either through built-ins or libatomic, on all
 389 #   architectures. Since we don't want to separate the cases where
 390 #   libatomic is needed vs. not needed, we simplify thing and only
 391 #   support situations where libatomic is available, even if on some
 392 #   architectures libatomic is not strictly needed as all __atomic
 393 #   intrinsics might be built-in. The only case where libatomic is
 394 #   missing entirely is when the toolchain does not have support for
 395 #   threads. However, a package that does not need threads but still
 396 #   uses atomics is quite a corner case, which does not warrant the
 397 #   added complexity.
 398 # - with gcc 4.7, libatomic did not exist, so only built-ins are
 399 #   available. This means that __atomic can only be used in a subset
 400 #   of the architectures
 401 config BR2_TOOLCHAIN_HAS_ATOMIC
 402         bool
 403         default y if BR2_TOOLCHAIN_HAS_LIBATOMIC
 404         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_arm
 405         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_armeb
 406         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_xtensa
 407         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_ARCH_IS_64
 408
 409 # - libquadmath is not needed/available on all architectures (but gcc
 410 #   correctly handles this already).
 411 # - At least, libquadmath is available on:
 412 #   - i*86
 413 #   - x86_64
 414 # - When available, libquadmath requires wchar support.
 415 config BR2_TOOLCHAIN_HAS_LIBQUADMATH
 416         bool
 417         default y if BR2_i386 || BR2_x86_64