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 # This order guarantees that the highest version is set, as kconfig
 226 # stops affecting a value on the first matching default.
 227 config BR2_TOOLCHAIN_HEADERS_AT_LEAST
 228         string
 229         default "4.7"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7
 230         default "4.6"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6
 231         default "4.5"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
 232         default "4.4"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
 233         default "4.3"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3
 234         default "4.2"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
 235         default "4.1"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1
 236         default "4.0"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
 237         default "3.19" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19
 238         default "3.18" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18
 239         default "3.17" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17
 240         default "3.16" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16
 241         default "3.15" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15
 242         default "3.14" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
 243         default "3.13" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
 244         default "3.12" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12
 245         default "3.11" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11
 246         default "3.10" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
 247         default "3.9"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9
 248         default "3.8"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8
 249         default "3.7"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
 250         default "3.6"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6
 251         default "3.5"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
 252         default "3.4"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4
 253         default "3.3"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3
 254         default "3.2"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
 255         default "3.1"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1
 256         default "3.0"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0
 257         default "2.6"
 258
 259 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
 260         bool
 261
 262 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
 263         bool
 264         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
 265
 266 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
 267         bool
 268         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
 269
 270 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
 271         bool
 272         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
 273
 274 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
 275         bool
 276         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
 277
 278 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
 279         bool
 280         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
 281
 282 config BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
 283         bool
 284         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
 285
 286 config BR2_TOOLCHAIN_GCC_AT_LEAST_5
 287         bool
 288         select BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
 289
 290 config BR2_TOOLCHAIN_GCC_AT_LEAST_6
 291         bool
 292         select BR2_TOOLCHAIN_GCC_AT_LEAST_5
 293
 294 # This order guarantees that the highest version is set, as kconfig
 295 # stops affecting a value on the first matching default.
 296 config BR2_TOOLCHAIN_GCC_AT_LEAST
 297         string
 298         default "6"     if BR2_TOOLCHAIN_GCC_AT_LEAST_6
 299         default "5"     if BR2_TOOLCHAIN_GCC_AT_LEAST_5
 300         default "4.9"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
 301         default "4.8"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
 302         default "4.7"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
 303         default "4.6"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
 304         default "4.5"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
 305         default "4.4"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
 306         default "4.3"   if BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
 307
 308 config BR2_TOOLCHAIN_HAS_SYNC_1
 309         bool
 310         default y
 311         depends on !BR2_bfin
 312         depends on !BR2_m68k_cf
 313         depends on !BR2_microblaze
 314         depends on !BR2_sparc
 315         depends on !(BR2_arc && !BR2_ARC_ATOMIC_EXT)
 316
 317 config BR2_TOOLCHAIN_HAS_SYNC_2
 318         bool
 319         default y if BR2_TOOLCHAIN_HAS_SYNC_1
 320
 321 config BR2_TOOLCHAIN_HAS_SYNC_4
 322         bool
 323         default y
 324         depends on !BR2_m68k_cf
 325         depends on !BR2_sparc
 326         depends on !(BR2_arc && !BR2_ARC_ATOMIC_EXT)
 327
 328 # The availability of __sync for 8-byte types on ARM is somewhat
 329 # complicated:
 330 #
 331 #  - It appeared in gcc starting with gcc 4.7.
 332 #
 333 #  - On ARMv7, there is no problem, it can be directly implemented in
 334 #    userspace.
 335 #
 336 #  - On < ARMv7, it requires help from the kernel. Unfortunately, the
 337 #    libgcc code implementing 8-byte __sync with the help from the
 338 #    kernel calls __write() when a failure occurs, which is a function
 339 #    internal to glibc, not available in uClibc and musl. This means
 340 #    that the 8-byte __sync operations are not available on < ARMv7
 341 #    with uClibc and musl. This problem was fixed as part of gcc
 342 #    PR68059, which was backported to the gcc 5 branch, but isn't yet
 343 #    part of any gcc 5.x release.
 344 #
 345 config BR2_TOOLCHAIN_ARM_HAS_SYNC_8
 346         bool
 347         default y
 348         depends on BR2_arm || BR2_armeb
 349         depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
 350         depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_ARM_CPU_ARMV7A
 351
 352 # 8-byte intrinsics available on most x86 CPUs, except a few old ones
 353 config BR2_TOOLCHAIN_X86_HAS_SYNC_8
 354         bool
 355         default y
 356         depends on BR2_i386
 357         depends on !BR2_x86_i486
 358         depends on !BR2_x86_c3
 359         depends on !BR2_x86_winchip_c6
 360         depends on !BR2_x86_winchip2
 361
 362 # 8-byte intrinsics available:
 363 #  - On all 64 bits architecture
 364 #  - On a certain combinations of ARM platforms
 365 #  - On certain x86 32 bits CPUs
 366 config BR2_TOOLCHAIN_HAS_SYNC_8
 367         bool
 368         default y if BR2_ARCH_IS_64
 369         default y if BR2_TOOLCHAIN_ARM_HAS_SYNC_8
 370         default y if BR2_TOOLCHAIN_X86_HAS_SYNC_8
 371
 372 # libatomic is available since gcc 4.8, when thread support is
 373 # enabled. Also, libatomic doesn't recognize "uclinux" as a valid OS
 374 # part of the tuple, and is therefore not build on uclinux targets,
 375 # which is why BR2_BINFMT_FLAT configurations are excluded.
 376 config BR2_TOOLCHAIN_HAS_LIBATOMIC
 377         bool
 378         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 && \
 379                 BR2_TOOLCHAIN_HAS_THREADS && \
 380                 !BR2_BINFMT_FLAT
 381
 382 # __atomic intrinsics are available:
 383 # - with gcc 4.8, either through built-ins or libatomic, on all
 384 #   architectures. Since we don't want to separate the cases where
 385 #   libatomic is needed vs. not needed, we simplify thing and only
 386 #   support situations where libatomic is available, even if on some
 387 #   architectures libatomic is not strictly needed as all __atomic
 388 #   intrinsics might be built-in. The only case where libatomic is
 389 #   missing entirely is when the toolchain does not have support for
 390 #   threads. However, a package that does not need threads but still
 391 #   uses atomics is quite a corner case, which does not warrant the
 392 #   added complexity.
 393 # - with gcc 4.7, libatomic did not exist, so only built-ins are
 394 #   available. This means that __atomic can only be used in a subset
 395 #   of the architectures
 396 config BR2_TOOLCHAIN_HAS_ATOMIC
 397         bool
 398         default y if BR2_TOOLCHAIN_HAS_LIBATOMIC
 399         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_arm
 400         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_armeb
 401         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_xtensa
 402         default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_ARCH_IS_64
 403
 404 # - libquadmath is not needed/available on all architectures (but gcc
 405 #   correctly handles this already).
 406 # - At least, libquadmath is available on:
 407 #   - i*86
 408 #   - x86_64
 409 # - When available, libquadmath requires wchar support.
 410 config BR2_TOOLCHAIN_HAS_LIBQUADMATH
 411         bool
 412         default y if BR2_i386 || BR2_x86_64