Config.in 22 KB

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  1. menu "Toolchain"
  2. # Invisible option that makes sure the toolchain package always gets
  3. # built
  4. config BR2_TOOLCHAIN
  5. bool
  6. default y
  7. # Should be selected for glibc or eglibc
  8. config BR2_TOOLCHAIN_USES_GLIBC
  9. bool
  10. select BR2_USE_WCHAR
  11. select BR2_ENABLE_LOCALE
  12. select BR2_TOOLCHAIN_HAS_FULL_GETTEXT
  13. select BR2_TOOLCHAIN_HAS_THREADS
  14. select BR2_TOOLCHAIN_HAS_THREADS_DEBUG
  15. select BR2_TOOLCHAIN_HAS_THREADS_NPTL
  16. select BR2_TOOLCHAIN_HAS_UCONTEXT
  17. select BR2_TOOLCHAIN_SUPPORTS_PIE
  18. config BR2_TOOLCHAIN_USES_UCLIBC
  19. bool
  20. # ucontext is only available for a subset of the supported
  21. # architectures
  22. select BR2_TOOLCHAIN_HAS_UCONTEXT if BR2_ARM_CPU_HAS_ARM || BR2_i386 \
  23. || BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el \
  24. || BR2_sparc || BR2_x86_64
  25. select BR2_TOOLCHAIN_SUPPORTS_PIE if !BR2_m68k && !BR2_microblaze && !BR2_STATIC_LIBS
  26. config BR2_TOOLCHAIN_USES_MUSL
  27. bool
  28. select BR2_USE_WCHAR
  29. select BR2_ENABLE_LOCALE
  30. select BR2_TOOLCHAIN_HAS_THREADS
  31. select BR2_TOOLCHAIN_HAS_THREADS_DEBUG
  32. select BR2_TOOLCHAIN_HAS_THREADS_NPTL
  33. select BR2_TOOLCHAIN_HAS_UCONTEXT
  34. select BR2_TOOLCHAIN_SUPPORTS_PIE if !BR2_STATIC_LIBS
  35. choice
  36. prompt "Toolchain type"
  37. help
  38. Select whether to use the toolchain provided by buildroot
  39. or an external toolchain.
  40. Some vendors provide toolchains in binary form, some in
  41. source form.
  42. config BR2_TOOLCHAIN_BUILDROOT
  43. bool "Buildroot toolchain"
  44. depends on BR2_ARCH_HAS_TOOLCHAIN_BUILDROOT
  45. config BR2_TOOLCHAIN_EXTERNAL
  46. bool "External toolchain"
  47. help
  48. Select if you want to use an existing cross-compiling
  49. toolchain. Buildroot can either download automatically a
  50. toolchain, or use an already installed toolchain.
  51. endchoice
  52. source "toolchain/toolchain-buildroot/Config.in"
  53. source "toolchain/toolchain-external/Config.in"
  54. # Generic toolchain options
  55. # we want gdb config in the middle of both source and external
  56. # toolchains, but mconf won't let us source the same file twice,
  57. # so put it here instead
  58. source "package/gdb/Config.in.host"
  59. comment "Toolchain Generic Options"
  60. # https://sourceware.org/bugzilla/show_bug.cgi?id=19615
  61. # Affect toolchains built with binutils 2.26 (fixed in binutils 2.26.1).
  62. config BR2_TOOLCHAIN_HAS_BINUTILS_BUG_19615
  63. bool
  64. # https://sourceware.org/bugzilla/show_bug.cgi?id=20006
  65. # Affect toolchains built with binutils 2.26 (fixed in binutils 2.26.1).
  66. config BR2_TOOLCHAIN_HAS_BINUTILS_BUG_20006
  67. bool
  68. # Atomic types can be:
  69. # - never lock-free
  70. # - sometimes lock-free
  71. # - always lock-free
  72. # see https://en.cppreference.com/w/c/atomic/ATOMIC_LOCK_FREE_consts
  73. #
  74. # On most architectures, gcc provides "always lock-free" atomic types,
  75. # but a few architectures are limited to "sometimes lock-free"
  76. # types. This hidden option allows to know if the architecture
  77. # provides "always lock-free" atomic types.
  78. config BR2_TOOLCHAIN_SUPPORTS_ALWAYS_LOCKFREE_ATOMIC_INTS
  79. bool
  80. default y
  81. depends on !BR2_nios2
  82. depends on !BR2_ARM_CPU_ARMV4
  83. depends on !BR2_ARM_CPU_ARMV5
  84. depends on !BR2_sparc_v8
  85. depends on !BR2_m68k_cf5208
  86. # GCC uses thunk functions to adjust the 'this' pointer when calling
  87. # C++ member functions in classes derived with multiple inheritance.
  88. # Generation of thunk functions requires support from the compiler
  89. # back end. In the absence of that support target-independent code
  90. # in the C++ front end is used to generate thunk functions, but it
  91. # does not support vararg functions.
  92. # or1k will support it in the gcc mainline starting with gcc-9.
  93. config BR2_TOOLCHAIN_SUPPORTS_VARIADIC_MI_THUNK
  94. bool
  95. default y
  96. depends on !BR2_or1k
  97. depends on !BR2_xtensa
  98. # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63261. This bug no
  99. # longer exists in gcc 8.x.
  100. config BR2_TOOLCHAIN_HAS_GCC_BUG_63261
  101. bool
  102. default y if BR2_microblaze
  103. depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_8
  104. # Prior to gcc 7.x, exception_ptr, nested_exception and future from
  105. # libstdc++ would only be provided on architectures that support
  106. # always lock-free atomic ints. See
  107. # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64735. This issue has
  108. # been removed in GCC 7.x, where exception propagation is now
  109. # supported without lock-free atomic int.
  110. config BR2_TOOLCHAIN_HAS_GCC_BUG_64735
  111. bool
  112. default y if !BR2_TOOLCHAIN_SUPPORTS_ALWAYS_LOCKFREE_ATOMIC_INTS && \
  113. !BR2_TOOLCHAIN_GCC_AT_LEAST_7
  114. # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68485. This bug still
  115. # exists in gcc 9.x
  116. config BR2_TOOLCHAIN_HAS_GCC_BUG_68485
  117. bool
  118. default y if BR2_microblaze
  119. # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85180. This bug no
  120. # longer exists in gcc 8.x.
  121. config BR2_TOOLCHAIN_HAS_GCC_BUG_85180
  122. bool
  123. default y if BR2_microblaze
  124. depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_8
  125. # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85862
  126. # An infinite loop exists in the find_base_term() logic of 6.x
  127. # on microblaze. http://autobuild.buildroot.net/results/158e8ebb39713e1b436a5cc1a1916f46c30694df/
  128. config BR2_TOOLCHAIN_HAS_GCC_BUG_85862
  129. bool
  130. default y if BR2_microblaze
  131. depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_7
  132. # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90620
  133. # ICE: in do_output_reload, at reload1.c:7978 on microblaze.
  134. # It's still not fixed in gcc 9.x
  135. config BR2_TOOLCHAIN_HAS_GCC_BUG_90620
  136. bool
  137. default y if BR2_microblaze
  138. # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93847
  139. # ICE: compiler error: Segmentation fault on Nios II. This bug
  140. # no longer exists in gcc 9.x.
  141. config BR2_TOOLCHAIN_HAS_GCC_BUG_93847
  142. bool
  143. default y if BR2_nios2 && !BR2_TOOLCHAIN_GCC_AT_LEAST_9
  144. config BR2_TOOLCHAIN_HAS_NATIVE_RPC
  145. bool
  146. config BR2_USE_WCHAR
  147. bool
  148. config BR2_ENABLE_LOCALE
  149. bool
  150. config BR2_INSTALL_LIBSTDCPP
  151. bool
  152. config BR2_TOOLCHAIN_HAS_DLANG
  153. bool
  154. config BR2_TOOLCHAIN_HAS_FORTRAN
  155. bool
  156. config BR2_TOOLCHAIN_HAS_THREADS
  157. bool
  158. config BR2_TOOLCHAIN_HAS_THREADS_DEBUG
  159. bool
  160. config BR2_TOOLCHAIN_HAS_THREADS_NPTL
  161. bool
  162. config BR2_TOOLCHAIN_HAS_SSP
  163. bool
  164. config BR2_TOOLCHAIN_HAS_SSP_STRONG
  165. bool
  166. default y if BR2_TOOLCHAIN_HAS_SSP && BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
  167. config BR2_TOOLCHAIN_HAS_UCONTEXT
  168. bool
  169. config BR2_TOOLCHAIN_HAS_OPENMP
  170. bool
  171. config BR2_TOOLCHAIN_SUPPORTS_PIE
  172. bool
  173. config BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_COPY
  174. bool "Copy gconv libraries"
  175. depends on BR2_TOOLCHAIN_USES_GLIBC
  176. help
  177. The gconv libraries are used to convert between different
  178. character sets (charsets).
  179. Say 'y' if you need to store and/or display different
  180. charsets.
  181. config BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_LIST
  182. string "Gconv libraries to copy"
  183. depends on BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_COPY
  184. help
  185. Set to the list of gconv libraries to copy.
  186. Leave empty to copy all gconv libraries.
  187. Specify only the basename of the libraries, leave
  188. out the .so extension. Eg.:
  189. IBM850 ISO8859-15 UNICODE
  190. Note: the full set of gconv libs are ~8MiB (on ARM).
  191. config BR2_TOOLCHAIN_EXTRA_LIBS
  192. string "Extra toolchain libraries to be copied to target"
  193. default BR2_TOOLCHAIN_EXTRA_EXTERNAL_LIBS if BR2_TOOLCHAIN_EXTRA_EXTERNAL_LIBS != "" # legacy
  194. depends on !BR2_STATIC_LIBS
  195. help
  196. If your toolchain provides extra libraries that need to be
  197. copied to the target filesystem, enter them here, separated
  198. by spaces. The library should not include a suffix or any
  199. type of pre/post wildcard.
  200. Examples where this can be useful is for adding debug
  201. libraries to the target like the GCC libsanitizer.
  202. e.g. "libasan liblsan libtsan libubsan"
  203. # This boolean is true if the toolchain provides a built-in full
  204. # featured gettext implementation (glibc), and false if only a stub
  205. # gettext implementation is provided (uclibc, musl)
  206. config BR2_TOOLCHAIN_HAS_FULL_GETTEXT
  207. bool
  208. config BR2_USE_MMU
  209. bool "Enable MMU support" if BR2_ARCH_HAS_MMU_OPTIONAL
  210. default y if BR2_ARCH_HAS_MMU_OPTIONAL || BR2_ARCH_HAS_MMU_MANDATORY
  211. help
  212. If your target has a MMU, you should say Y here. If you
  213. are unsure, just say Y.
  214. config BR2_TARGET_OPTIMIZATION
  215. string "Target Optimizations"
  216. default ""
  217. help
  218. Optimizations to use when building for the target host.
  219. NOTE: gcc optimization level is defined in build options.
  220. config BR2_TARGET_LDFLAGS
  221. string "Target linker options"
  222. help
  223. Extra options to pass to the linker when building for the
  224. target.
  225. Note that options with a '$' sign (eg.
  226. -Wl,-rpath='$ORIGIN/../lib') are not supported.
  227. config BR2_ECLIPSE_REGISTER
  228. bool "Register toolchain within Eclipse Buildroot plug-in"
  229. help
  230. This options tells Buildroot to generate the necessary
  231. configuration files to make your toolchain appear within
  232. Eclipse, through the Eclipse Buildroot plugin.
  233. # Options for packages to depend on, if they require at least a
  234. # specific version of the kernel headers.
  235. # Toolchains should choose the adequate option (ie. the highest
  236. # version, not all of them).
  237. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0
  238. bool
  239. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1
  240. bool
  241. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0
  242. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
  243. bool
  244. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1
  245. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3
  246. bool
  247. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
  248. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4
  249. bool
  250. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3
  251. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
  252. bool
  253. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4
  254. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6
  255. bool
  256. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
  257. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
  258. bool
  259. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6
  260. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8
  261. bool
  262. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
  263. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9
  264. bool
  265. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8
  266. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
  267. bool
  268. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9
  269. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11
  270. bool
  271. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
  272. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12
  273. bool
  274. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11
  275. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
  276. bool
  277. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12
  278. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
  279. bool
  280. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
  281. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15
  282. bool
  283. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
  284. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16
  285. bool
  286. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15
  287. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17
  288. bool
  289. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16
  290. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18
  291. bool
  292. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17
  293. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19
  294. bool
  295. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18
  296. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
  297. bool
  298. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19
  299. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1
  300. bool
  301. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
  302. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
  303. bool
  304. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1
  305. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3
  306. bool
  307. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
  308. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
  309. bool
  310. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3
  311. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
  312. bool
  313. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
  314. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6
  315. bool
  316. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
  317. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7
  318. bool
  319. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6
  320. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8
  321. bool
  322. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7
  323. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9
  324. bool
  325. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8
  326. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10
  327. bool
  328. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9
  329. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11
  330. bool
  331. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10
  332. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12
  333. bool
  334. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11
  335. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13
  336. bool
  337. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12
  338. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14
  339. bool
  340. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13
  341. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15
  342. bool
  343. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14
  344. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_16
  345. bool
  346. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15
  347. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_17
  348. bool
  349. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_16
  350. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_18
  351. bool
  352. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_17
  353. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_19
  354. bool
  355. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_18
  356. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_20
  357. bool
  358. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_19
  359. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_0
  360. bool
  361. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_20
  362. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1
  363. bool
  364. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_0
  365. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_2
  366. bool
  367. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1
  368. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_3
  369. bool
  370. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_2
  371. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_4
  372. bool
  373. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_3
  374. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_5
  375. bool
  376. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_4
  377. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_6
  378. bool
  379. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_5
  380. config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_7
  381. bool
  382. select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_6
  383. select BR2_TOOLCHAIN_HEADERS_LATEST
  384. # This should be selected by the latest version, above, to indicate that
  385. # Buildroot does not know of more recent headers than the ones selected.
  386. # This allows using toolchains with headers more recent than Buildroot
  387. # knows about, while still enforcing strict check for older headers.
  388. config BR2_TOOLCHAIN_HEADERS_LATEST
  389. bool
  390. # This order guarantees that the highest version is set, as kconfig
  391. # stops affecting a value on the first matching default.
  392. config BR2_TOOLCHAIN_HEADERS_AT_LEAST
  393. string
  394. default "5.7" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_7
  395. default "5.6" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_6
  396. default "5.5" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_5
  397. default "5.4" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_4
  398. default "5.3" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_3
  399. default "5.2" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_2
  400. default "5.1" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1
  401. default "5.0" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_0
  402. default "4.20" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_20
  403. default "4.19" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_19
  404. default "4.18" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_18
  405. default "4.17" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_17
  406. default "4.16" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_16
  407. default "4.15" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15
  408. default "4.14" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14
  409. default "4.13" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13
  410. default "4.12" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12
  411. default "4.11" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11
  412. default "4.10" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10
  413. default "4.9" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9
  414. default "4.8" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8
  415. default "4.7" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7
  416. default "4.6" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6
  417. default "4.5" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
  418. default "4.4" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
  419. default "4.3" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3
  420. default "4.2" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
  421. default "4.1" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1
  422. default "4.0" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
  423. default "3.19" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19
  424. default "3.18" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18
  425. default "3.17" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17
  426. default "3.16" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16
  427. default "3.15" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15
  428. default "3.14" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
  429. default "3.13" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
  430. default "3.12" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12
  431. default "3.11" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11
  432. default "3.10" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
  433. default "3.9" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9
  434. default "3.8" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8
  435. default "3.7" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
  436. default "3.6" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6
  437. default "3.5" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
  438. default "3.4" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4
  439. default "3.3" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3
  440. default "3.2" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
  441. default "3.1" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1
  442. default "3.0" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0
  443. default "2.6"
  444. config BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
  445. bool
  446. config BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
  447. bool
  448. select BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
  449. config BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
  450. bool
  451. select BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
  452. config BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
  453. bool
  454. select BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
  455. config BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
  456. bool
  457. select BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
  458. config BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
  459. bool
  460. select BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
  461. config BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
  462. bool
  463. select BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
  464. config BR2_TOOLCHAIN_GCC_AT_LEAST_5
  465. bool
  466. select BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
  467. config BR2_TOOLCHAIN_GCC_AT_LEAST_6
  468. bool
  469. select BR2_TOOLCHAIN_GCC_AT_LEAST_5
  470. config BR2_TOOLCHAIN_GCC_AT_LEAST_7
  471. bool
  472. select BR2_TOOLCHAIN_GCC_AT_LEAST_6
  473. config BR2_TOOLCHAIN_GCC_AT_LEAST_8
  474. bool
  475. select BR2_TOOLCHAIN_GCC_AT_LEAST_7
  476. config BR2_TOOLCHAIN_GCC_AT_LEAST_9
  477. bool
  478. select BR2_TOOLCHAIN_GCC_AT_LEAST_8
  479. config BR2_TOOLCHAIN_GCC_AT_LEAST_10
  480. bool
  481. select BR2_TOOLCHAIN_GCC_AT_LEAST_9
  482. # This order guarantees that the highest version is set, as kconfig
  483. # stops affecting a value on the first matching default.
  484. config BR2_TOOLCHAIN_GCC_AT_LEAST
  485. string
  486. default "10" if BR2_TOOLCHAIN_GCC_AT_LEAST_10
  487. default "9" if BR2_TOOLCHAIN_GCC_AT_LEAST_9
  488. default "8" if BR2_TOOLCHAIN_GCC_AT_LEAST_8
  489. default "7" if BR2_TOOLCHAIN_GCC_AT_LEAST_7
  490. default "6" if BR2_TOOLCHAIN_GCC_AT_LEAST_6
  491. default "5" if BR2_TOOLCHAIN_GCC_AT_LEAST_5
  492. default "4.9" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
  493. default "4.8" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
  494. default "4.7" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
  495. default "4.6" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
  496. default "4.5" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
  497. default "4.4" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
  498. default "4.3" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
  499. config BR2_TOOLCHAIN_HAS_MNAN_OPTION
  500. bool
  501. default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
  502. config BR2_TOOLCHAIN_HAS_SYNC_1
  503. bool
  504. default y
  505. depends on !BR2_m68k_cf
  506. depends on !BR2_microblaze
  507. depends on !BR2_sparc
  508. depends on !(BR2_arc && !BR2_ARC_ATOMIC_EXT)
  509. config BR2_TOOLCHAIN_HAS_SYNC_2
  510. bool
  511. default y if BR2_TOOLCHAIN_HAS_SYNC_1
  512. config BR2_TOOLCHAIN_HAS_SYNC_4
  513. bool
  514. default y
  515. depends on !BR2_m68k_cf
  516. depends on !BR2_sparc
  517. depends on !(BR2_arc && !BR2_ARC_ATOMIC_EXT)
  518. # The availability of __sync for 8-byte types on ARM is somewhat
  519. # complicated:
  520. #
  521. # - It appeared in gcc starting with gcc 4.7.
  522. #
  523. # - On ARMv7, there is no problem, it can be directly implemented in
  524. # userspace.
  525. #
  526. # - On < ARMv7, it requires help from the kernel. Unfortunately, the
  527. # libgcc code implementing 8-byte __sync with the help from the
  528. # kernel calls __write() when a failure occurs, which is a function
  529. # internal to glibc, not available in uClibc and musl. This means
  530. # that the 8-byte __sync operations are not available on < ARMv7
  531. # with uClibc and musl. This problem was fixed as part of gcc
  532. # PR68059, which was backported to the gcc 5 branch, but isn't yet
  533. # part of any gcc 5.x release.
  534. #
  535. config BR2_TOOLCHAIN_ARM_HAS_SYNC_8
  536. bool
  537. default y
  538. depends on BR2_arm || BR2_armeb
  539. depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
  540. depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_ARM_CPU_ARMV7A
  541. # 8-byte intrinsics available on most x86 CPUs, except a few old ones
  542. config BR2_TOOLCHAIN_X86_HAS_SYNC_8
  543. bool
  544. default y
  545. depends on BR2_i386
  546. depends on !BR2_x86_i486
  547. depends on !BR2_x86_c3
  548. depends on !BR2_x86_winchip_c6
  549. depends on !BR2_x86_winchip2
  550. # 8-byte intrinsics available:
  551. # - On all 64 bits architecture
  552. # - On a certain combinations of ARM platforms
  553. # - On certain x86 32 bits CPUs
  554. config BR2_TOOLCHAIN_HAS_SYNC_8
  555. bool
  556. default y if BR2_ARCH_IS_64
  557. default y if BR2_TOOLCHAIN_ARM_HAS_SYNC_8
  558. default y if BR2_TOOLCHAIN_X86_HAS_SYNC_8
  559. # libatomic is available since gcc 4.8, when thread support is
  560. # enabled. Also, libatomic doesn't recognize "uclinux" as a valid OS
  561. # part of the tuple, and is therefore not build on uclinux targets,
  562. # which is why BR2_BINFMT_FLAT configurations are excluded.
  563. config BR2_TOOLCHAIN_HAS_LIBATOMIC
  564. bool
  565. default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 && \
  566. BR2_TOOLCHAIN_HAS_THREADS && \
  567. !BR2_BINFMT_FLAT
  568. # __atomic intrinsics are available:
  569. # - with gcc 4.8, either through built-ins or libatomic, on all
  570. # architectures. Since we don't want to separate the cases where
  571. # libatomic is needed vs. not needed, we simplify thing and only
  572. # support situations where libatomic is available, even if on some
  573. # architectures libatomic is not strictly needed as all __atomic
  574. # intrinsics might be built-in. The only case where libatomic is
  575. # missing entirely is when the toolchain does not have support for
  576. # threads. However, a package that does not need threads but still
  577. # uses atomics is quite a corner case, which does not warrant the
  578. # added complexity.
  579. # - with gcc 4.7, libatomic did not exist, so only built-ins are
  580. # available. This means that __atomic can only be used in a subset
  581. # of the architectures
  582. config BR2_TOOLCHAIN_HAS_ATOMIC
  583. bool
  584. default y if BR2_TOOLCHAIN_HAS_LIBATOMIC
  585. default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_arm
  586. default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_armeb
  587. default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_xtensa
  588. default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_ARCH_IS_64
  589. # - libquadmath is not needed/available on all architectures (but gcc
  590. # correctly handles this already).
  591. # - At least, libquadmath is available on:
  592. # - i*86
  593. # - x86_64
  594. # - When available, libquadmath requires wchar support.
  595. config BR2_TOOLCHAIN_HAS_LIBQUADMATH
  596. bool
  597. default y if BR2_i386 || BR2_x86_64
  598. endmenu