buildroot/Config.in

#

mainmenu "Buildroot $BR2_VERSION Configuration"

config BR2_HAVE_DOT_CONFIG
	bool
	default y

config BR2_VERSION
	string
	option env="BR2_VERSION_FULL"

config BR2_HOSTARCH
	string
	option env="HOSTARCH"

config BR2_EXTERNAL
	string
	option env="BR2_EXTERNAL"

# Hidden boolean selected by pre-built packages for x86, when they
# need to run on x86-64 machines (example: pre-built external
# toolchains, binary tools like SAM-BA, etc.).
config BR2_HOSTARCH_NEEDS_IA32_LIBS
	bool

# Hidden boolean selected by packages that need to build 32 bits
# binaries with the host compiler, even on 64 bits build machines (e.g
# bootloaders).
config BR2_HOSTARCH_NEEDS_IA32_COMPILER
	bool

source "arch/Config.in"

menu "Build options"

menu "Commands"

config BR2_WGET
	string "Wget command"
	default "wget --passive-ftp -nd -t 3"

config BR2_SVN
	string "Subversion (svn) command"
	default "svn"

config BR2_BZR
	string "Bazaar (bzr) command"
	default "bzr"

config BR2_GIT
	string "Git command"
	default "git"

config BR2_CVS
	string "CVS command"
	default "cvs"

config BR2_LOCALFILES
	string "Local files retrieval command"
	default "cp"

config BR2_SCP
	string "Secure copy (scp) command"
	default "scp"

config BR2_SSH
	string "Secure shell (ssh) command"
	default "ssh"

config BR2_HG
	string "Mercurial (hg) command"
	default "hg"

config BR2_ZCAT
	string "zcat command"
	default "gzip -d -c"
	help
	  Command to be used to extract a gzip'ed file to stdout.
	  zcat is identical to gunzip -c except that the former may
	  not be available on your system.
	  Default is "gzip -d -c"
	  Other possible values include "gunzip -c" or "zcat".

config BR2_BZCAT
	string "bzcat command"
	default "bzcat"
	help
	  Command to be used to extract a bzip2'ed file to stdout.
	  bzcat is identical to bunzip2 -c except that the former may
	  not be available on your system.
	  Default is "bzcat"
	  Other possible values include "bunzip2 -c" or "bzip2 -d -c".

config BR2_XZCAT
	string "xzcat command"
	default "xzcat"
	help
	  Command to be used to extract a xz'ed file to stdout.
	  Default is "xzcat"

config BR2_TAR_OPTIONS
	string "Tar options"
	default ""
	help
	  Options to pass to tar when extracting the sources.
	  E.g. " -v --exclude='*.svn*'" to exclude all .svn internal files
	  and to be verbose.

endmenu

config BR2_DEFCONFIG_FROM_ENV
	string
	option env="BR2_DEFCONFIG"

config BR2_DEFCONFIG
	string "Location to save buildroot config"
	default BR2_DEFCONFIG_FROM_ENV if BR2_DEFCONFIG_FROM_ENV != ""
	default "$(CONFIG_DIR)/defconfig"
	help
	  When running 'make savedefconfig', the defconfig file will be saved
	  in this location.

config BR2_DL_DIR
	string "Download dir"
	default "$(TOPDIR)/dl"
	help
	  Directory to store all the source files that we need to fetch.
	  If the Linux shell environment has defined the BUILDROOT_DL_DIR
	  environment variable, then this overrides this configuration item.

	  The default is $(TOPDIR)/dl

config BR2_HOST_DIR
	string "Host dir"
	default "$(BASE_DIR)/host"
	help
	  Directory to store all the binary files that are built for the host.
	  This includes the cross compilation toolchain when building the
	  internal buildroot toolchain.

	  The default is $(BASE_DIR)/host

menu "Mirrors and Download locations"

config BR2_PRIMARY_SITE
	string "Primary download site"
	default ""
	help
	  Primary site to download from. If this option is set then buildroot
	  will try to download package source first from this site and try the
	  default if the file is not found.
	  Valid URIs are URIs recognized by $(WGET) and scp URIs of the form
	  scp://[user@]host:path.
	  NOTE: This works for all packages using the central package
	  infrastructure (generic, autotools, cmake, ...)

config BR2_PRIMARY_SITE_ONLY
	bool "Only allow downloads from primary download site"
	depends on BR2_PRIMARY_SITE != ""
	help
	  If this option is enabled, downloads will only be attempted
	  from the primary download site. Other locations, like the
	  package's official download location or the backup download
	  site, will not be considered. Therefore, if the package is
	  not present on the primary site, the download fails.

	  This is useful for project developers who want to ensure
	  that the project can be built even if the upstream tarball
	  locations disappear.

if !BR2_PRIMARY_SITE_ONLY

config BR2_BACKUP_SITE
	string "Backup download site"
	default "http://sources.buildroot.net/"
	help
	  Backup site to download from. If this option is set then buildroot
	  will fall back to download package sources from here if the
	  normal location fails.

config BR2_KERNEL_MIRROR
	string "Kernel.org mirror"
	default "http://www.kernel.org/pub/"
	help
	  kernel.org is mirrored on a number of servers around the world.
	  The following allows you to select your preferred mirror.

	  Have a look on the kernel.org site for a list of mirrors, then enter
	  the URL to the base directory.  Examples:

	     http://www.XX.kernel.org/pub (XX = country code)
	     http://mirror.aarnet.edu.au/pub/ftp.kernel.org

config BR2_GNU_MIRROR
	string "GNU Software mirror"
	default "http://ftp.gnu.org/pub/gnu"
	help
	  GNU has multiple software mirrors scattered around the world.
	  The following allows you to select your preferred mirror.

	  Have a look on the gnu.org site for a list of mirrors, then enter
	  the URL to the base directory.  Examples:

	     http://ftp.gnu.org/pub/gnu
	     http://mirror.aarnet.edu.au/pub/gnu

config BR2_DEBIAN_MIRROR
	string "Debian Software mirror"
	default "http://ftp.debian.org"
	help
	  Debian has multiple software mirrors scattered around the world.
	  The following allows you to select your preferred mirror.

	  Usually, just add your country code like XX here:
	  http://ftp.XX.debian.org

endif

endmenu

config BR2_JLEVEL
	int "Number of jobs to run simultaneously (0 for auto)"
	default "0"
	help
	  Number of jobs to run simultaneously.  If 0, determine
	  automatically according to number of CPUs on the host
	  system.

config BR2_CCACHE
	bool "Enable compiler cache"
	help
	  This option will enable the use of ccache, a compiler
	  cache. It will cache the result of previous builds to speed
	  up future builds. The cache is stored in
	  $HOME/.buildroot-ccache.

	  Note that Buildroot does not try to invalidate the cache
	  contents when the compiler changes in an incompatible
	  way. Therefore, if you make a change to the compiler version
	  and/or configuration, you are responsible for purging the
	  ccache cache by removing the $HOME/.buildroot-ccache
	  directory.

config BR2_CCACHE_DIR
	string "Compiler cache location"
	depends on BR2_CCACHE
	default "$(HOME)/.buildroot-ccache"
	help
	  Where ccache should store cached files.

config BR2_DEPRECATED
	bool "Show packages that are deprecated or obsolete"
	help
	  This option hides outdated/obsolete versions of packages.

config BR2_ENABLE_DEBUG
	bool "build packages with debugging symbols"
	help
	  Build packages with debugging symbols enabled. All libraries
	  and binaries in the 'staging' directory will have debugging
	  symbols, which allows remote debugging even if libraries and
	  binaries are stripped on the target. Whether libraries and
	  binaries are stripped on the target is controlled by the
	  BR2_STRIP_* options below.

if BR2_ENABLE_DEBUG
choice
	prompt "gcc debug level"
	default BR2_DEBUG_2
	help
	  Set the debug level for gcc

config BR2_DEBUG_1
	bool "debug level 1"
	help
	  Debug level 1 produces minimal information, enough
	  for making backtraces in parts of the program that
	  you don't plan to debug. This includes descriptions
	  of functions and external variables, but no information
	  about local variables and no line numbers.

config BR2_DEBUG_2
	bool "debug level 2"
	help
	  The default gcc debug level is 2

config BR2_DEBUG_3
	bool "debug level 3"
	help
	  Level 3 includes extra information, such as all the
	  macro definitions present in the program. Some debuggers
	  support macro expansion when you use -g3.
endchoice
endif

choice
	prompt "strip command for binaries on target"
	default BR2_STRIP_strip

config BR2_STRIP_strip
	bool "strip"
	depends on !BR2_PACKAGE_HOST_ELF2FLT
	help
	  Binaries and libraries in the target filesystem will be
	  stripped using the normal 'strip' command. This allows to
	  save space, mainly by removing debugging symbols. Debugging
	  symbols on the target are needed for native debugging, but
	  not when remote debugging is used.

config BR2_STRIP_sstrip
	bool "sstrip"
	select BR2_PACKAGE_SSTRIP_HOST
	depends on !BR2_PACKAGE_HOST_ELF2FLT
	help
	  Binaries and libraries in the target filesystem will be
	  stripped using the 'sstrip' command, which strips a little
	  bit more than the traditional 'strip' command. This allows to
	  save space, mainly by removing debugging symbols. Debugging
	  symbols on the target are needed for native debugging, but
	  not when remote debugging is used.

config BR2_STRIP_none
	bool "none"
	help
	  Do not strip binaries and libraries in the target
	  filesystem.
endchoice

config BR2_STRIP_EXCLUDE_FILES
	string "executables that should not be stripped"
	depends on !BR2_STRIP_none
	default ""
	help
	  You may specify a space-separated list of binaries and libraries
	  here that should not be stripped on the target.

config BR2_STRIP_EXCLUDE_DIRS
	string "directories that should be skipped when stripping"
	depends on !BR2_STRIP_none
	default ""
	help
	  You may specify a space-separated list of directories that should
	  be skipped when stripping. Binaries and libraries in these
	  directories will not be touched.
	  The directories should be specified relative to the target directory,
	  without leading slash.

choice
	prompt "gcc optimization level"
	default BR2_OPTIMIZE_S
	help
	  Set the optimization level for gcc

config BR2_OPTIMIZE_0
	bool "optimization level 0"
	help
	  Do not optimize. This is the default.

config BR2_OPTIMIZE_1
	bool "optimization level 1"
	help
	  Optimize. Optimizing compilation takes somewhat more time,
	  and a lot more memory for a large function. With -O, the
	  compiler tries to reduce code size and execution time,
	  without performing any optimizations that take a great deal
	  of compilation time. -O turns on the following optimization
	  flags: -fdefer-pop -fdelayed-branch -fguess-branch-probability
	  -fcprop-registers -floop-optimize -fif-conversion
	  -fif-conversion2 -ftree-ccp -ftree-dce -ftree-dominator-opts
	  -ftree-dse -ftree-ter -ftree-lrs -ftree-sra -ftree-copyrename
	  -ftree-fre -ftree-ch -funit-at-a-time -fmerge-constants
	  -O also turns on -fomit-frame-pointer on machines where doing
	  so does not interfere with debugging.

config BR2_OPTIMIZE_2
	bool "optimization level 2"
	help
	  Optimize even more. GCC performs nearly all supported optimizations
	  that do not involve a space-speed tradeoff. The compiler does not
	  perform loop unrolling or function inlining when you specify -O2.
	  As compared to -O, this option increases both compilation time and
	  the performance of the generated code. -O2 turns on all optimization
	  flags specified by -O. It also turns on the following optimization
	  flags: -fthread-jumps -fcrossjumping -foptimize-sibling-calls
	  -fcse-follow-jumps -fcse-skip-blocks -fgcse  -fgcse-lm
	  -fexpensive-optimizations -fstrength-reduce -frerun-cse-after-loop
	  -frerun-loop-opt -fcaller-saves -fpeephole2 -fschedule-insns
	  -fschedule-insns2 -fsched-interblock -fsched-spec -fregmove
	  -fstrict-aliasing -fdelete-null-pointer-checks -freorder-blocks
	  -freorder-functions -falign-functions -falign-jumps -falign-loops
	  -falign-labels -ftree-vrp -ftree-pre
	  Please note the warning under -fgcse about invoking -O2 on programs
	  that use computed gotos.

config BR2_OPTIMIZE_3
	bool "optimization level 3"
	help
	  Optimize yet more. -O3 turns on all optimizations specified by -O2
	  and also turns on the -finline-functions, -funswitch-loops and
	  -fgcse-after-reload options.

config BR2_OPTIMIZE_S
	bool "optimize for size"
	help
	  Optimize for size. -Os enables all -O2 optimizations that do not
	  typically increase code size. It also performs further optimizations
	  designed to reduce code size. -Os disables the following optimization
	  flags: -falign-functions -falign-jumps -falign-loops -falign-labels
	  -freorder-blocks -freorder-blocks-and-partition -fprefetch-loop-arrays
	  -ftree-vect-loop-version

endchoice

config BR2_ENABLE_SSP
	bool "build code with Stack Smashing Protection"
	depends on BR2_TOOLCHAIN_HAS_SSP
	help
	  Enable stack smashing protection support using GCCs
	  -fstack-protector-all option.

	  See http://www.linuxfromscratch.org/hints/downloads/files/ssp.txt
	  for details.

	  Note that this requires the toolchain to have SSP
	  support. This is always the case for glibc and eglibc
	  toolchain, but is optional in uClibc toolchains.

comment "enabling Stack Smashing Protection requires support in the toolchain"
	depends on !BR2_TOOLCHAIN_HAS_SSP

config BR2_PREFER_STATIC_LIB
	bool "prefer static libraries"
	help
	  Where possible, build and use static libraries for the target.
	  This potentially increases your code size and should only be
	  used if you know what you do.
	  The default is to build dynamic libraries and use those on
	  the target filesystem.

	  WARNING: This is highly experimental at the moment.

config BR2_HAVE_DOCUMENTATION
	bool "documentation on the target"
	# We no longer want to support a toolchain on the target
	depends on BR2_DEPRECATED
	help
	  Install the documentation, including manual pages and info
	  pages, on the target.
	  If you say n here, your target will not contain any
	  documentation.

config BR2_PACKAGE_OVERRIDE_FILE
	string "location of a package override file"
	default "$(TOPDIR)/local.mk"
	help
	  A package override file is a short makefile that contains
	  variable definitions of the form <pkg>_OVERRIDE_SRCDIR,
	  which allows to tell Buildroot to use an existing directory
	  as the source directory for a particular package. See the
	  Buildroot documentation for more details on this feature.

config BR2_GLOBAL_PATCH_DIR
	string "global patch directory"
	help
	  You may specify a directory containing global package patches.
	  For a specific version <packageversion> of a specific package
	  <packagename>, patches are applied as follows.

	  First, the default Buildroot patch set for the package is applied.

	  If the directory $(BR2_GLOBAL_PATCH_DIR)/<packagename>/<packageversion>
	  exists, then all *.patch files in the directory will be applied.

	  Otherwise, if the directory $(BR2_GLOBAL_PATCH_DIR)/<packagename> exists,
	  then all *.patch files in the directory will be applied.

endmenu

source "toolchain/Config.in"

source "system/Config.in"

source "linux/Config.in"

source "package/Config.in"

source "fs/Config.in"

source "boot/Config.in"

source "package/Config.in.host"

source "Config.in.legacy"

source "$BR2_EXTERNAL/Config.in"