Config.in 21 KB

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  1. #
  2. mainmenu "Buildroot $BR2_VERSION Configuration"
  3. config BR2_HAVE_DOT_CONFIG
  4. bool
  5. default y
  6. config BR2_VERSION
  7. string
  8. option env="BR2_VERSION_FULL"
  9. config BR2_HOSTARCH
  10. string
  11. option env="HOSTARCH"
  12. config BR2_EXTERNAL
  13. string
  14. option env="BR2_EXTERNAL"
  15. # Hidden config symbols for packages to check system gcc version
  16. config BR2_HOST_GCC_VERSION
  17. string
  18. option env="HOST_GCC_VERSION"
  19. config BR2_HOST_GCC_AT_LEAST_4_6
  20. bool
  21. default y if BR2_HOST_GCC_VERSION = "4 6"
  22. config BR2_HOST_GCC_AT_LEAST_4_7
  23. bool
  24. default y if BR2_HOST_GCC_VERSION = "4 7"
  25. select BR2_HOST_GCC_AT_LEAST_4_6
  26. config BR2_HOST_GCC_AT_LEAST_4_8
  27. bool
  28. default y if BR2_HOST_GCC_VERSION = "4 8"
  29. select BR2_HOST_GCC_AT_LEAST_4_7
  30. config BR2_HOST_GCC_AT_LEAST_4_9
  31. bool
  32. default y if BR2_HOST_GCC_VERSION = "4 9"
  33. select BR2_HOST_GCC_AT_LEAST_4_8
  34. config BR2_HOST_GCC_AT_LEAST_5
  35. bool
  36. default y if BR2_HOST_GCC_VERSION = "5"
  37. select BR2_HOST_GCC_AT_LEAST_4_9
  38. # Hidden boolean selected by packages in need of Java in order to build
  39. # (example: xbmc)
  40. config BR2_NEEDS_HOST_JAVA
  41. bool
  42. # Hidden boolean selected by packages in need of javac in order to build
  43. # (example: classpath)
  44. config BR2_NEEDS_HOST_JAVAC
  45. bool
  46. # Hidden boolean selected by packages in need of jar in order to build
  47. # (example: classpath)
  48. config BR2_NEEDS_HOST_JAR
  49. bool
  50. # Hidden boolean selected by pre-built packages for x86, when they
  51. # need to run on x86-64 machines (example: pre-built external
  52. # toolchains, binary tools like SAM-BA, etc.).
  53. config BR2_HOSTARCH_NEEDS_IA32_LIBS
  54. bool
  55. # Hidden boolean selected by packages that need to build 32 bits
  56. # binaries with the host compiler, even on 64 bits build machines (e.g
  57. # bootloaders).
  58. config BR2_HOSTARCH_NEEDS_IA32_COMPILER
  59. bool
  60. source "arch/Config.in"
  61. menu "Build options"
  62. menu "Commands"
  63. config BR2_WGET
  64. string "Wget command"
  65. default "wget --passive-ftp -nd -t 3"
  66. config BR2_SVN
  67. string "Subversion (svn) command"
  68. default "svn"
  69. config BR2_BZR
  70. string "Bazaar (bzr) command"
  71. default "bzr"
  72. config BR2_GIT
  73. string "Git command"
  74. default "git"
  75. config BR2_CVS
  76. string "CVS command"
  77. default "cvs"
  78. config BR2_LOCALFILES
  79. string "Local files retrieval command"
  80. default "cp"
  81. config BR2_SCP
  82. string "Secure copy (scp) command"
  83. default "scp"
  84. config BR2_SSH
  85. string "Secure shell (ssh) command"
  86. default "ssh"
  87. config BR2_HG
  88. string "Mercurial (hg) command"
  89. default "hg"
  90. config BR2_ZCAT
  91. string "zcat command"
  92. default "gzip -d -c"
  93. help
  94. Command to be used to extract a gzip'ed file to stdout.
  95. zcat is identical to gunzip -c except that the former may
  96. not be available on your system.
  97. Default is "gzip -d -c"
  98. Other possible values include "gunzip -c" or "zcat".
  99. config BR2_BZCAT
  100. string "bzcat command"
  101. default "bzcat"
  102. help
  103. Command to be used to extract a bzip2'ed file to stdout.
  104. bzcat is identical to bunzip2 -c except that the former may
  105. not be available on your system.
  106. Default is "bzcat"
  107. Other possible values include "bunzip2 -c" or "bzip2 -d -c".
  108. config BR2_XZCAT
  109. string "xzcat command"
  110. default "xzcat"
  111. help
  112. Command to be used to extract a xz'ed file to stdout.
  113. Default is "xzcat"
  114. config BR2_TAR_OPTIONS
  115. string "Tar options"
  116. default ""
  117. help
  118. Options to pass to tar when extracting the sources.
  119. E.g. " -v --exclude='*.svn*'" to exclude all .svn internal files
  120. and to be verbose.
  121. endmenu
  122. config BR2_DEFCONFIG_FROM_ENV
  123. string
  124. option env="BR2_DEFCONFIG"
  125. config BR2_DEFCONFIG
  126. string "Location to save buildroot config"
  127. default BR2_DEFCONFIG_FROM_ENV if BR2_DEFCONFIG_FROM_ENV != ""
  128. default "$(CONFIG_DIR)/defconfig"
  129. help
  130. When running 'make savedefconfig', the defconfig file will be saved
  131. in this location.
  132. config BR2_DL_DIR
  133. string "Download dir"
  134. default "$(TOPDIR)/dl"
  135. help
  136. Directory to store all the source files that we need to fetch.
  137. If the Linux shell environment has defined the BR2_DL_DIR
  138. environment variable, then this overrides this configuration item.
  139. The default is $(TOPDIR)/dl
  140. config BR2_HOST_DIR
  141. string "Host dir"
  142. default "$(BASE_DIR)/host"
  143. help
  144. Directory to store all the binary files that are built for the host.
  145. This includes the cross compilation toolchain when building the
  146. internal buildroot toolchain.
  147. The default is $(BASE_DIR)/host
  148. menu "Mirrors and Download locations"
  149. config BR2_PRIMARY_SITE
  150. string "Primary download site"
  151. default ""
  152. help
  153. Primary site to download from. If this option is set then buildroot
  154. will try to download package source first from this site and try the
  155. default if the file is not found.
  156. Valid URIs are:
  157. - URIs recognized by $(WGET)
  158. - local URIs of the form file://absolutepath
  159. - scp URIs of the form scp://[user@]host:path.
  160. config BR2_PRIMARY_SITE_ONLY
  161. bool "Only allow downloads from primary download site"
  162. depends on BR2_PRIMARY_SITE != ""
  163. help
  164. If this option is enabled, downloads will only be attempted
  165. from the primary download site. Other locations, like the
  166. package's official download location or the backup download
  167. site, will not be considered. Therefore, if the package is
  168. not present on the primary site, the download fails.
  169. This is useful for project developers who want to ensure
  170. that the project can be built even if the upstream tarball
  171. locations disappear.
  172. if !BR2_PRIMARY_SITE_ONLY
  173. config BR2_BACKUP_SITE
  174. string "Backup download site"
  175. default "http://sources.buildroot.net"
  176. help
  177. Backup site to download from. If this option is set then buildroot
  178. will fall back to download package sources from here if the
  179. normal location fails.
  180. config BR2_KERNEL_MIRROR
  181. string "Kernel.org mirror"
  182. default "https://www.kernel.org/pub"
  183. help
  184. kernel.org is mirrored on a number of servers around the world.
  185. The following allows you to select your preferred mirror.
  186. Have a look on the kernel.org site for a list of mirrors, then enter
  187. the URL to the base directory. Examples:
  188. http://www.XX.kernel.org/pub (XX = country code)
  189. http://mirror.aarnet.edu.au/pub/ftp.kernel.org
  190. config BR2_GNU_MIRROR
  191. string "GNU Software mirror"
  192. default "http://ftp.gnu.org/pub/gnu"
  193. help
  194. GNU has multiple software mirrors scattered around the world.
  195. The following allows you to select your preferred mirror.
  196. Have a look on the gnu.org site for a list of mirrors, then enter
  197. the URL to the base directory. Examples:
  198. http://ftp.gnu.org/pub/gnu
  199. http://mirror.aarnet.edu.au/pub/gnu
  200. config BR2_LUAROCKS_MIRROR
  201. string "LuaRocks mirror"
  202. default "http://rocks.moonscript.org"
  203. help
  204. LuaRocks repository.
  205. See http://luarocks.org
  206. config BR2_CPAN_MIRROR
  207. string "CPAN mirror (Perl packages)"
  208. default "http://cpan.metacpan.org"
  209. help
  210. CPAN (Comprehensive Perl Archive Network) is a repository
  211. of Perl packages. It has multiple software mirrors scattered
  212. around the world. This option allows you to select a mirror.
  213. The list of mirrors is available at:
  214. http://search.cpan.org/mirror
  215. endif
  216. endmenu
  217. config BR2_JLEVEL
  218. int "Number of jobs to run simultaneously (0 for auto)"
  219. default "0"
  220. help
  221. Number of jobs to run simultaneously. If 0, determine
  222. automatically according to number of CPUs on the host
  223. system.
  224. config BR2_CCACHE
  225. bool "Enable compiler cache"
  226. help
  227. This option will enable the use of ccache, a compiler
  228. cache. It will cache the result of previous builds to speed
  229. up future builds. By default, the cache is stored in
  230. $HOME/.buildroot-ccache.
  231. Note that Buildroot does not try to invalidate the cache
  232. contents when the compiler changes in an incompatible
  233. way. Therefore, if you make a change to the compiler version
  234. and/or configuration, you are responsible for purging the
  235. ccache cache by removing the $HOME/.buildroot-ccache
  236. directory.
  237. if BR2_CCACHE
  238. config BR2_CCACHE_DIR
  239. string "Compiler cache location"
  240. default "$(HOME)/.buildroot-ccache"
  241. help
  242. Where ccache should store cached files.
  243. config BR2_CCACHE_INITIAL_SETUP
  244. string "Compiler cache initial setup"
  245. help
  246. Initial ccache settings to apply, such as --max-files or --max-size.
  247. For example, if your project is known to require more space than the
  248. default max cache size, then you might want to increase the cache size
  249. to a suitable amount using the -M (--max-size) option.
  250. The string you specify here is passed verbatim to ccache. Refer to
  251. ccache documentation for more details.
  252. These initial settings are applied after ccache has been compiled.
  253. config BR2_CCACHE_USE_BASEDIR
  254. bool "Use relative paths"
  255. default y
  256. help
  257. Allow ccache to convert absolute paths within the output
  258. directory into relative paths.
  259. During the build, many -I include directives are given with
  260. an absolute path. These absolute paths end up in the hashes
  261. that are computed by ccache. Therefore, when you build from a
  262. different directory, the hash will be different and the
  263. cached object will not be used.
  264. To improve cache performance, set this option to y. This
  265. allows ccache to rewrite absolute paths within the output
  266. directory into relative paths. Note that only paths within
  267. the output directory will be rewritten; therefore, if you
  268. change BR2_HOST_DIR to point outside the output directory and
  269. subsequently move it to a different location, this will lead
  270. to cache misses.
  271. This option has as a result that the debug information in the
  272. object files also has only relative paths. Therefore, make
  273. sure you cd to the build directory before starting gdb. See
  274. the section "COMPILING IN DIFFERENT DIRECTORIES" in the
  275. ccache manual for more information.
  276. endif
  277. config BR2_DEPRECATED
  278. bool "Show options and packages that are deprecated or obsolete"
  279. help
  280. This option shows outdated/obsolete versions of packages and
  281. options that are otherwise hidden.
  282. if BR2_DEPRECATED
  283. config BR2_DEPRECATED_SINCE_2015_05
  284. bool
  285. default y
  286. config BR2_DEPRECATED_SINCE_2015_08
  287. bool
  288. default y
  289. config BR2_DEPRECATED_SINCE_2015_11
  290. bool
  291. default y
  292. config BR2_DEPRECATED_SINCE_2016_02
  293. bool
  294. default y
  295. config BR2_DEPRECATED_SINCE_2016_05
  296. bool
  297. default y
  298. endif
  299. config BR2_ENABLE_DEBUG
  300. bool "build packages with debugging symbols"
  301. help
  302. Build packages with debugging symbols enabled. All libraries
  303. and binaries in the 'staging' directory will have debugging
  304. symbols, which allows remote debugging even if libraries and
  305. binaries are stripped on the target. Whether libraries and
  306. binaries are stripped on the target is controlled by the
  307. BR2_STRIP_* options below.
  308. if BR2_ENABLE_DEBUG
  309. choice
  310. prompt "gcc debug level"
  311. default BR2_DEBUG_2
  312. help
  313. Set the debug level for gcc
  314. config BR2_DEBUG_1
  315. bool "debug level 1"
  316. help
  317. Debug level 1 produces minimal information, enough
  318. for making backtraces in parts of the program that
  319. you don't plan to debug. This includes descriptions
  320. of functions and external variables, but no information
  321. about local variables and no line numbers.
  322. config BR2_DEBUG_2
  323. bool "debug level 2"
  324. help
  325. The default gcc debug level is 2
  326. config BR2_DEBUG_3
  327. bool "debug level 3"
  328. help
  329. Level 3 includes extra information, such as all the
  330. macro definitions present in the program. Some debuggers
  331. support macro expansion when you use -g3.
  332. endchoice
  333. endif
  334. choice
  335. prompt "strip command for binaries on target"
  336. default BR2_STRIP_strip
  337. config BR2_STRIP_strip
  338. bool "strip"
  339. depends on !BR2_PACKAGE_HOST_ELF2FLT
  340. help
  341. Binaries and libraries in the target filesystem will be
  342. stripped using the normal 'strip' command. This allows to
  343. save space, mainly by removing debugging symbols. Debugging
  344. symbols on the target are needed for native debugging, but
  345. not when remote debugging is used.
  346. config BR2_STRIP_none
  347. bool "none"
  348. help
  349. Do not strip binaries and libraries in the target
  350. filesystem.
  351. endchoice
  352. config BR2_STRIP_EXCLUDE_FILES
  353. string "executables that should not be stripped"
  354. depends on !BR2_STRIP_none
  355. default ""
  356. help
  357. You may specify a space-separated list of binaries and libraries
  358. here that should not be stripped on the target.
  359. config BR2_STRIP_EXCLUDE_DIRS
  360. string "directories that should be skipped when stripping"
  361. depends on !BR2_STRIP_none
  362. default ""
  363. help
  364. You may specify a space-separated list of directories that should
  365. be skipped when stripping. Binaries and libraries in these
  366. directories will not be touched.
  367. The directories should be specified relative to the target directory,
  368. without leading slash.
  369. choice
  370. prompt "gcc optimization level"
  371. default BR2_OPTIMIZE_S
  372. help
  373. Set the optimization level for gcc
  374. config BR2_OPTIMIZE_0
  375. bool "optimization level 0"
  376. help
  377. Do not optimize. This is the default.
  378. config BR2_OPTIMIZE_1
  379. bool "optimization level 1"
  380. help
  381. Optimize. Optimizing compilation takes somewhat more time,
  382. and a lot more memory for a large function. With -O, the
  383. compiler tries to reduce code size and execution time,
  384. without performing any optimizations that take a great deal
  385. of compilation time. -O turns on the following optimization
  386. flags: -fdefer-pop -fdelayed-branch -fguess-branch-probability
  387. -fcprop-registers -floop-optimize -fif-conversion
  388. -fif-conversion2 -ftree-ccp -ftree-dce -ftree-dominator-opts
  389. -ftree-dse -ftree-ter -ftree-lrs -ftree-sra -ftree-copyrename
  390. -ftree-fre -ftree-ch -funit-at-a-time -fmerge-constants
  391. -O also turns on -fomit-frame-pointer on machines where doing
  392. so does not interfere with debugging.
  393. config BR2_OPTIMIZE_2
  394. bool "optimization level 2"
  395. help
  396. Optimize even more. GCC performs nearly all supported optimizations
  397. that do not involve a space-speed tradeoff. The compiler does not
  398. perform loop unrolling or function inlining when you specify -O2.
  399. As compared to -O, this option increases both compilation time and
  400. the performance of the generated code. -O2 turns on all optimization
  401. flags specified by -O. It also turns on the following optimization
  402. flags: -fthread-jumps -fcrossjumping -foptimize-sibling-calls
  403. -fcse-follow-jumps -fcse-skip-blocks -fgcse -fgcse-lm
  404. -fexpensive-optimizations -fstrength-reduce -frerun-cse-after-loop
  405. -frerun-loop-opt -fcaller-saves -fpeephole2 -fschedule-insns
  406. -fschedule-insns2 -fsched-interblock -fsched-spec -fregmove
  407. -fstrict-aliasing -fdelete-null-pointer-checks -freorder-blocks
  408. -freorder-functions -falign-functions -falign-jumps -falign-loops
  409. -falign-labels -ftree-vrp -ftree-pre
  410. Please note the warning under -fgcse about invoking -O2 on programs
  411. that use computed gotos.
  412. config BR2_OPTIMIZE_3
  413. bool "optimization level 3"
  414. help
  415. Optimize yet more. -O3 turns on all optimizations specified by -O2
  416. and also turns on the -finline-functions, -funswitch-loops and
  417. -fgcse-after-reload options.
  418. config BR2_OPTIMIZE_S
  419. bool "optimize for size"
  420. help
  421. Optimize for size. -Os enables all -O2 optimizations that do not
  422. typically increase code size. It also performs further optimizations
  423. designed to reduce code size. -Os disables the following optimization
  424. flags: -falign-functions -falign-jumps -falign-loops -falign-labels
  425. -freorder-blocks -freorder-blocks-and-partition -fprefetch-loop-arrays
  426. -ftree-vect-loop-version
  427. endchoice
  428. config BR2_GOOGLE_BREAKPAD_ENABLE
  429. bool "Enable google-breakpad support"
  430. select BR2_PACKAGE_GOOGLE_BREAKPAD
  431. depends on BR2_INSTALL_LIBSTDCPP
  432. depends on BR2_TOOLCHAIN_USES_GLIBC
  433. depends on BR2_PACKAGE_GOOGLE_BREAKPAD_ARCH_SUPPORTS
  434. help
  435. This option will enable the use of google breakpad, a
  436. library and tool suite that allows you to distribute an
  437. application to users with compiler-provided debugging
  438. information removed, record crashes in compact "minidump"
  439. files, send them back to your server and produce C and C++
  440. stack traces from these minidumps. Breakpad can also write
  441. minidumps on request for programs that have not crashed.
  442. if BR2_GOOGLE_BREAKPAD_ENABLE
  443. config BR2_GOOGLE_BREAKPAD_INCLUDE_FILES
  444. string "List of executables and libraries to extract symbols from"
  445. default ""
  446. help
  447. You may specify a space-separated list of binaries and
  448. libraries with full paths relative to $(TARGET_DIR) of which
  449. debug symbols will be dumped for further use with google
  450. breakpad.
  451. A directory structure that can be used by minidump-stackwalk
  452. will be created at:
  453. $(STAGING_DIR)/usr/share/google-breakpad-symbols
  454. endif
  455. choice
  456. bool "build code with Stack Smashing Protection"
  457. default BR2_SSP_ALL if BR2_ENABLE_SSP # legacy
  458. depends on BR2_TOOLCHAIN_HAS_SSP
  459. help
  460. Enable stack smashing protection support using GCC's
  461. -fstack-protector option family.
  462. See http://www.linuxfromscratch.org/hints/downloads/files/ssp.txt
  463. for details.
  464. Note that this requires the toolchain to have SSP
  465. support. This is always the case for glibc and eglibc
  466. toolchain, but is optional in uClibc toolchains.
  467. config BR2_SSP_NONE
  468. bool "None"
  469. help
  470. Disable stack-smashing protection.
  471. config BR2_SSP_REGULAR
  472. bool "-fstack-protector"
  473. help
  474. Emit extra code to check for buffer overflows, such as stack
  475. smashing attacks. This is done by adding a guard variable to
  476. functions with vulnerable objects. This includes functions
  477. that call alloca, and functions with buffers larger than 8
  478. bytes. The guards are initialized when a function is entered
  479. and then checked when the function exits. If a guard check
  480. fails, an error message is printed and the program exits.
  481. config BR2_SSP_STRONG
  482. bool "-fstack-protector-strong"
  483. depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
  484. help
  485. Like -fstack-protector but includes additional functions to be
  486. protected - those that have local array definitions, or have
  487. references to local frame addresses.
  488. comment "Stack Smashing Protection strong needs a toolchain w/ gcc >= 4.9"
  489. depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
  490. config BR2_SSP_ALL
  491. bool "-fstack-protector-all"
  492. help
  493. Like -fstack-protector except that all functions are
  494. protected. This option might have a significant performance
  495. impact on the compiled binaries.
  496. endchoice
  497. comment "Stack Smashing Protection needs a toolchain w/ SSP"
  498. depends on !BR2_TOOLCHAIN_HAS_SSP
  499. choice
  500. bool "libraries"
  501. default BR2_SHARED_LIBS if BR2_BINFMT_SUPPORTS_SHARED
  502. default BR2_STATIC_LIBS if !BR2_BINFMT_SUPPORTS_SHARED
  503. help
  504. Select the type of libraries you want to use on the target.
  505. The default is to build dynamic libraries and use those on
  506. the target filesystem, except when the architecture and/or
  507. the selected binary format does not support shared
  508. libraries.
  509. config BR2_STATIC_LIBS
  510. bool "static only"
  511. help
  512. Build and use only static libraries. No shared libraries
  513. will be instaled on the target. This potentially increases
  514. your code size and should only be used if you know what you
  515. are doing. Note that some packages may not be available when
  516. this option is enabled, due to their need for dynamic
  517. library support.
  518. config BR2_SHARED_LIBS
  519. bool "shared only"
  520. depends on BR2_BINFMT_SUPPORTS_SHARED
  521. help
  522. Build and use only shared libraries. This is the recommended
  523. solution as it saves space and build time.
  524. config BR2_SHARED_STATIC_LIBS
  525. bool "both static and shared"
  526. depends on BR2_BINFMT_SUPPORTS_SHARED
  527. help
  528. Build both shared and static libraries, but link executables
  529. dynamically. While building both shared and static libraries
  530. take more time and more disk space, having static libraries
  531. may be useful to link some of the applications statically.
  532. endchoice
  533. config BR2_PACKAGE_OVERRIDE_FILE
  534. string "location of a package override file"
  535. default "$(CONFIG_DIR)/local.mk"
  536. help
  537. A package override file is a short makefile that contains
  538. variable definitions of the form <pkg>_OVERRIDE_SRCDIR,
  539. which allows to tell Buildroot to use an existing directory
  540. as the source directory for a particular package. See the
  541. Buildroot documentation for more details on this feature.
  542. config BR2_GLOBAL_PATCH_DIR
  543. string "global patch directories"
  544. help
  545. You may specify a space separated list of one or more directories
  546. containing global package patches. For a specific version
  547. <packageversion> of a specific package <packagename>, patches are
  548. applied as follows:
  549. First, the default Buildroot patch set for the package is applied
  550. from the package's directory in Buildroot.
  551. Then for every directory - <global-patch-dir> - that exists in
  552. BR2_GLOBAL_PATCH_DIR, if the directory
  553. <global-patch-dir>/<packagename>/<packageversion>/ exists, then all
  554. *.patch files in this directory will be applied.
  555. Otherwise, if the directory <global-patch-dir>/<packagename> exists,
  556. then all *.patch files in the directory will be applied.
  557. menu "Advanced"
  558. config BR2_COMPILER_PARANOID_UNSAFE_PATH
  559. bool "paranoid check of library/header paths"
  560. help
  561. By default, when this option is disabled, when the Buildroot
  562. cross-compiler will encounter an unsafe library or header
  563. path (such as /usr/include, or /usr/lib), the compiler will
  564. display a warning.
  565. By enabling this option, this warning is turned into an
  566. error, which will completely abort the build when such
  567. unsafe paths are encountered.
  568. Note that this mechanism is available for both the internal
  569. toolchain (through gcc and binutils patches) and external
  570. toolchain backends (through the external toolchain wrapper).
  571. endmenu
  572. endmenu
  573. source "toolchain/Config.in"
  574. source "system/Config.in"
  575. source "linux/Config.in"
  576. source "package/Config.in"
  577. source "fs/Config.in"
  578. source "boot/Config.in"
  579. source "package/Config.in.host"
  580. source "Config.in.legacy"
  581. menu "User-provided options"
  582. depends on BR2_EXTERNAL != "support/dummy-external"
  583. source "$BR2_EXTERNAL/Config.in"
  584. endmenu