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