746 lines
22 KiB
Plaintext
746 lines
22 KiB
Plaintext
#
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mainmenu "Buildroot $BR2_VERSION Configuration"
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config BR2_HAVE_DOT_CONFIG
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bool
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default y
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config BR2_VERSION
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string
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option env="BR2_VERSION_FULL"
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config BR2_HOSTARCH
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string
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option env="HOSTARCH"
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config BR2_EXTERNAL
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string
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option env="BR2_EXTERNAL"
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# Hidden config symbols for packages to check system gcc version
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config BR2_HOST_GCC_VERSION
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string
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option env="HOST_GCC_VERSION"
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config BR2_HOST_GCC_AT_LEAST_4_6
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bool
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default y if BR2_HOST_GCC_VERSION = "4 6"
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config BR2_HOST_GCC_AT_LEAST_4_7
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bool
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default y if BR2_HOST_GCC_VERSION = "4 7"
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select BR2_HOST_GCC_AT_LEAST_4_6
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config BR2_HOST_GCC_AT_LEAST_4_8
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bool
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default y if BR2_HOST_GCC_VERSION = "4 8"
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select BR2_HOST_GCC_AT_LEAST_4_7
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config BR2_HOST_GCC_AT_LEAST_4_9
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bool
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default y if BR2_HOST_GCC_VERSION = "4 9"
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select BR2_HOST_GCC_AT_LEAST_4_8
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config BR2_HOST_GCC_AT_LEAST_5
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bool
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default y if BR2_HOST_GCC_VERSION = "5"
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select BR2_HOST_GCC_AT_LEAST_4_9
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# Hidden boolean selected by packages in need of Java in order to build
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# (example: xbmc)
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config BR2_NEEDS_HOST_JAVA
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bool
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# Hidden boolean selected by packages in need of javac in order to build
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# (example: classpath)
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config BR2_NEEDS_HOST_JAVAC
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bool
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# Hidden boolean selected by packages in need of jar in order to build
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# (example: classpath)
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config BR2_NEEDS_HOST_JAR
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bool
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# Hidden boolean selected by pre-built packages for x86, when they
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# need to run on x86-64 machines (example: pre-built external
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# toolchains, binary tools like SAM-BA, etc.).
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config BR2_HOSTARCH_NEEDS_IA32_LIBS
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bool
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# Hidden boolean selected by packages that need to build 32 bits
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# binaries with the host compiler, even on 64 bits build machines (e.g
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# bootloaders).
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config BR2_HOSTARCH_NEEDS_IA32_COMPILER
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bool
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source "arch/Config.in"
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menu "Build options"
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menu "Commands"
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config BR2_WGET
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string "Wget command"
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default "wget --passive-ftp -nd -t 3"
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config BR2_SVN
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string "Subversion (svn) command"
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default "svn"
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config BR2_BZR
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string "Bazaar (bzr) command"
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default "bzr"
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config BR2_GIT
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string "Git command"
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default "git"
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config BR2_CVS
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string "CVS command"
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default "cvs"
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config BR2_LOCALFILES
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string "Local files retrieval command"
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default "cp"
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config BR2_SCP
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string "Secure copy (scp) command"
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default "scp"
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config BR2_SSH
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string "Secure shell (ssh) command"
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default "ssh"
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config BR2_HG
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string "Mercurial (hg) command"
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default "hg"
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config BR2_ZCAT
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string "zcat command"
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default "gzip -d -c"
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help
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Command to be used to extract a gzip'ed file to stdout. zcat
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is identical to gunzip -c except that the former may not be
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available on your system.
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Default is "gzip -d -c"
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Other possible values include "gunzip -c" or "zcat".
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config BR2_BZCAT
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string "bzcat command"
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default "bzcat"
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help
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Command to be used to extract a bzip2'ed file to stdout.
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bzcat is identical to bunzip2 -c except that the former may
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not be available on your system.
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Default is "bzcat"
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Other possible values include "bunzip2 -c" or "bzip2 -d -c".
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config BR2_XZCAT
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string "xzcat command"
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default "xzcat"
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help
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Command to be used to extract a xz'ed file to stdout.
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Default is "xzcat"
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config BR2_TAR_OPTIONS
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string "Tar options"
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default ""
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help
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Options to pass to tar when extracting the sources.
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E.g. " -v --exclude='*.svn*'" to exclude all .svn internal files
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and to be verbose.
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endmenu
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config BR2_DEFCONFIG_FROM_ENV
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string
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option env="BR2_DEFCONFIG"
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config BR2_DEFCONFIG
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string "Location to save buildroot config"
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default BR2_DEFCONFIG_FROM_ENV if BR2_DEFCONFIG_FROM_ENV != ""
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default "$(CONFIG_DIR)/defconfig"
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help
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When running 'make savedefconfig', the defconfig file will be
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saved in this location.
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config BR2_DL_DIR
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string "Download dir"
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default "$(TOPDIR)/dl"
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help
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Directory to store all the source files that we need to fetch.
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If the Linux shell environment has defined the BR2_DL_DIR
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environment variable, then this overrides this configuration
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item.
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The default is $(TOPDIR)/dl
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config BR2_HOST_DIR
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string "Host dir"
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default "$(BASE_DIR)/host"
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help
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Directory to store all the binary files that are built for the
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host. This includes the cross compilation toolchain when
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building the internal buildroot toolchain.
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The default is $(BASE_DIR)/host
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menu "Mirrors and Download locations"
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config BR2_PRIMARY_SITE
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string "Primary download site"
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default ""
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help
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Primary site to download from. If this option is set then
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buildroot will try to download package source first from this
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site and try the default if the file is not found.
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Valid URIs are:
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- URIs recognized by $(WGET)
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- local URIs of the form file://absolutepath
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- scp URIs of the form scp://[user@]host:path.
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config BR2_PRIMARY_SITE_ONLY
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bool "Only allow downloads from primary download site"
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depends on BR2_PRIMARY_SITE != ""
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help
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If this option is enabled, downloads will only be attempted
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from the primary download site. Other locations, like the
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package's official download location or the backup download
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site, will not be considered. Therefore, if the package is not
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present on the primary site, the download fails.
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This is useful for project developers who want to ensure that
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the project can be built even if the upstream tarball
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locations disappear.
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if !BR2_PRIMARY_SITE_ONLY
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config BR2_BACKUP_SITE
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string "Backup download site"
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default "http://sources.buildroot.net"
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help
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Backup site to download from. If this option is set then
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buildroot will fall back to download package sources from here
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if the normal location fails.
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config BR2_KERNEL_MIRROR
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string "Kernel.org mirror"
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default "https://cdn.kernel.org/pub"
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help
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kernel.org is mirrored on a number of servers around the
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world. The following allows you to select your preferred
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mirror. By default, a CDN is used, which automatically
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redirects to a mirror geographically close to you.
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Have a look on the kernel.org site for a list of mirrors, then
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enter the URL to the base directory. Examples:
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http://www.XX.kernel.org/pub (XX = country code)
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http://mirror.aarnet.edu.au/pub/ftp.kernel.org
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config BR2_GNU_MIRROR
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string "GNU Software mirror"
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default "http://ftpmirror.gnu.org"
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help
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GNU has multiple software mirrors scattered around the
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world. The following allows you to select your preferred
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mirror. By default, a generic address is used, which
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automatically selects an up-to-date and local mirror.
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Have a look on the gnu.org site for a list of mirrors, then
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enter the URL to the base directory. Examples:
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http://ftp.gnu.org/pub/gnu
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http://mirror.aarnet.edu.au/pub/gnu
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config BR2_LUAROCKS_MIRROR
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string "LuaRocks mirror"
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default "http://rocks.moonscript.org"
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help
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LuaRocks repository.
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See http://luarocks.org
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config BR2_CPAN_MIRROR
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string "CPAN mirror (Perl packages)"
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default "http://cpan.metacpan.org"
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help
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CPAN (Comprehensive Perl Archive Network) is a repository of
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Perl packages. It has multiple software mirrors scattered
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around the world. This option allows you to select a mirror.
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The list of mirrors is available at:
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http://search.cpan.org/mirror
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endif
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endmenu
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config BR2_JLEVEL
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int "Number of jobs to run simultaneously (0 for auto)"
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default "0"
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help
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Number of jobs to run simultaneously. If 0, determine
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automatically according to number of CPUs on the host system.
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config BR2_CCACHE
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bool "Enable compiler cache"
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help
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This option will enable the use of ccache, a compiler cache.
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It will cache the result of previous builds to speed up future
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builds. By default, the cache is stored in
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$HOME/.buildroot-ccache.
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Note that Buildroot does not try to invalidate the cache
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contents when the compiler changes in an incompatible way.
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Therefore, if you make a change to the compiler version and/or
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configuration, you are responsible for purging the ccache
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cache by removing the $HOME/.buildroot-ccache directory.
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if BR2_CCACHE
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config BR2_CCACHE_DIR
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string "Compiler cache location"
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default "$(HOME)/.buildroot-ccache"
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help
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Where ccache should store cached files.
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config BR2_CCACHE_INITIAL_SETUP
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string "Compiler cache initial setup"
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help
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Initial ccache settings to apply, such as --max-files or
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--max-size.
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For example, if your project is known to require more space
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than the default max cache size, then you might want to
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increase the cache size to a suitable amount using the -M
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(--max-size) option.
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The string you specify here is passed verbatim to ccache.
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Refer to ccache documentation for more details.
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These initial settings are applied after ccache has been
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compiled.
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config BR2_CCACHE_USE_BASEDIR
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bool "Use relative paths"
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default y
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help
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Allow ccache to convert absolute paths within the output
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directory into relative paths.
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During the build, many -I include directives are given with an
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absolute path. These absolute paths end up in the hashes that
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are computed by ccache. Therefore, when you build from a
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different directory, the hash will be different and the cached
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object will not be used.
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To improve cache performance, set this option to y. This
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allows ccache to rewrite absolute paths within the output
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directory into relative paths. Note that only paths within the
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output directory will be rewritten; therefore, if you change
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BR2_HOST_DIR to point outside the output directory and
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subsequently move it to a different location, this will lead
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to cache misses.
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This option has as a result that the debug information in the
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object files also has only relative paths. Therefore, make
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sure you cd to the build directory before starting gdb. See
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the section "COMPILING IN DIFFERENT DIRECTORIES" in the ccache
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manual for more information.
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endif
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config BR2_DEPRECATED
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bool "Show options and packages that are deprecated or obsolete"
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help
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This option shows outdated/obsolete versions of packages and
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options that are otherwise hidden.
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if BR2_DEPRECATED
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config BR2_DEPRECATED_SINCE_2015_05
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bool
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default y
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config BR2_DEPRECATED_SINCE_2015_08
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bool
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default y
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config BR2_DEPRECATED_SINCE_2015_11
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bool
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default y
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config BR2_DEPRECATED_SINCE_2016_02
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bool
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default y
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config BR2_DEPRECATED_SINCE_2016_05
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bool
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default y
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endif
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config BR2_ENABLE_DEBUG
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bool "build packages with debugging symbols"
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help
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Build packages with debugging symbols enabled. All libraries
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and binaries in the 'staging' directory will have debugging
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symbols, which allows remote debugging even if libraries and
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binaries are stripped on the target. Whether libraries and
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binaries are stripped on the target is controlled by the
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BR2_STRIP_* options below.
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if BR2_ENABLE_DEBUG
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choice
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prompt "gcc debug level"
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default BR2_DEBUG_2
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help
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Set the debug level for gcc
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config BR2_DEBUG_1
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bool "debug level 1"
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help
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Debug level 1 produces minimal information, enough for making
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backtraces in parts of the program that you don't plan to
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debug. This includes descriptions of functions and external
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variables, but no information about local variables and no
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line numbers.
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config BR2_DEBUG_2
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bool "debug level 2"
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help
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The default gcc debug level is 2
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config BR2_DEBUG_3
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bool "debug level 3"
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help
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Level 3 includes extra information, such as all the macro
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definitions present in the program. Some debuggers support
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macro expansion when you use -g3.
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endchoice
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endif
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choice
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prompt "strip command for binaries on target"
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default BR2_STRIP_strip
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config BR2_STRIP_strip
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bool "strip"
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depends on !BR2_PACKAGE_HOST_ELF2FLT
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help
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Binaries and libraries in the target filesystem will be
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stripped using the normal 'strip' command. This allows to save
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space, mainly by removing debugging symbols. Debugging symbols
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on the target are needed for native debugging, but not when
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remote debugging is used.
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config BR2_STRIP_none
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bool "none"
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help
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Do not strip binaries and libraries in the target filesystem.
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endchoice
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config BR2_STRIP_EXCLUDE_FILES
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string "executables that should not be stripped"
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depends on !BR2_STRIP_none
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default ""
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help
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You may specify a space-separated list of binaries and
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libraries here that should not be stripped on the target.
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config BR2_STRIP_EXCLUDE_DIRS
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string "directories that should be skipped when stripping"
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depends on !BR2_STRIP_none
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default ""
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help
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You may specify a space-separated list of directories that
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should be skipped when stripping. Binaries and libraries in
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these directories will not be touched. The directories should
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be specified relative to the target directory, without leading
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slash.
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choice
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prompt "gcc optimization level"
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default BR2_OPTIMIZE_S
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help
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Set the optimization level for gcc
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config BR2_OPTIMIZE_0
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bool "optimization level 0"
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help
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Do not optimize. This is the default.
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config BR2_OPTIMIZE_1
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bool "optimization level 1"
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help
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Optimize. Optimizing compilation takes somewhat more time, and
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a lot more memory for a large function. With -O, the compiler
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tries to reduce code size and execution time, without
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performing any optimizations that take a great deal of
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compilation time. -O turns on the following optimization
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flags: -fdefer-pop -fdelayed-branch -fguess-branch-probability
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-fcprop-registers -floop-optimize -fif-conversion
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-fif-conversion2 -ftree-ccp -ftree-dce -ftree-dominator-opts
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-ftree-dse -ftree-ter -ftree-lrs -ftree-sra -ftree-copyrename
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-ftree-fre -ftree-ch -funit-at-a-time -fmerge-constants. -O
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also turns on -fomit-frame-pointer on machines where doing so
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does not interfere with debugging.
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config BR2_OPTIMIZE_2
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bool "optimization level 2"
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help
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Optimize even more. GCC performs nearly all supported
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optimizations that do not involve a space-speed tradeoff. The
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compiler does not perform loop unrolling or function inlining
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when you specify -O2. As compared to -O, this option increases
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both compilation time and the performance of the generated
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code. -O2 turns on all optimization flags specified by -O. It
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also turns on the following optimization flags:
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-fthread-jumps -fcrossjumping -foptimize-sibling-calls
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-fcse-follow-jumps -fcse-skip-blocks -fgcse -fgcse-lm
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-fexpensive-optimizations -fstrength-reduce
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-frerun-cse-after-loop -frerun-loop-opt -fcaller-saves
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-fpeephole2 -fschedule-insns -fschedule-insns2
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-fsched-interblock -fsched-spec -fregmove -fstrict-aliasing
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-fdelete-null-pointer-checks -freorder-blocks
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-freorder-functions -falign-functions -falign-jumps
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-falign-loops -falign-labels -ftree-vrp -ftree-pre. Please
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note the warning under -fgcse about invoking -O2 on programs
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that use computed gotos.
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config BR2_OPTIMIZE_3
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bool "optimization level 3"
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help
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Optimize yet more. -O3 turns on all optimizations specified by
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-O2 and also turns on the -finline-functions, -funswitch-loops
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and -fgcse-after-reload options.
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config BR2_OPTIMIZE_G
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bool "optimize for debugging"
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depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
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help
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Optimize for debugging. This enables optimizations that do not
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interfere with debugging. It should be the optimization level
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of choice for the standard edit-compile-debug cycle, offering
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a reasonable level of optimization while maintaining fast
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compilation and a good debugging experience.
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config BR2_OPTIMIZE_S
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bool "optimize for size"
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help
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Optimize for size. -Os enables all -O2 optimizations that do
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not typically increase code size. It also performs further
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optimizations designed to reduce code size. -Os disables the
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following optimization flags: -falign-functions -falign-jumps
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-falign-loops -falign-labels -freorder-blocks
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-freorder-blocks-and-partition -fprefetch-loop-arrays
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-ftree-vect-loop-version
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endchoice
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config BR2_GOOGLE_BREAKPAD_ENABLE
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bool "Enable google-breakpad support"
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select BR2_PACKAGE_GOOGLE_BREAKPAD
|
|
depends on BR2_INSTALL_LIBSTDCPP
|
|
depends on BR2_TOOLCHAIN_USES_GLIBC
|
|
depends on BR2_PACKAGE_GOOGLE_BREAKPAD_ARCH_SUPPORTS
|
|
help
|
|
This option will enable the use of google breakpad, a library
|
|
and tool suite that allows you to distribute an application to
|
|
users with compiler-provided debugging information removed,
|
|
record crashes in compact "minidump" files, send them back to
|
|
your server and produce C and C++ stack traces from these
|
|
minidumps. Breakpad can also write minidumps on request for
|
|
programs that have not crashed.
|
|
|
|
if BR2_GOOGLE_BREAKPAD_ENABLE
|
|
|
|
config BR2_GOOGLE_BREAKPAD_INCLUDE_FILES
|
|
string "List of executables and libraries to extract symbols from"
|
|
default ""
|
|
help
|
|
You may specify a space-separated list of binaries and
|
|
libraries with full paths relative to $(TARGET_DIR) of which
|
|
debug symbols will be dumped for further use with google
|
|
breakpad.
|
|
|
|
A directory structure that can be used by minidump-stackwalk
|
|
will be created at:
|
|
|
|
$(STAGING_DIR)/usr/share/google-breakpad-symbols
|
|
|
|
endif
|
|
|
|
choice
|
|
bool "build code with Stack Smashing Protection"
|
|
default BR2_SSP_ALL if BR2_ENABLE_SSP # legacy
|
|
depends on BR2_TOOLCHAIN_HAS_SSP
|
|
help
|
|
Enable stack smashing protection support using GCC's
|
|
-fstack-protector option family.
|
|
|
|
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.
|
|
|
|
config BR2_SSP_NONE
|
|
bool "None"
|
|
help
|
|
Disable stack-smashing protection.
|
|
|
|
config BR2_SSP_REGULAR
|
|
bool "-fstack-protector"
|
|
help
|
|
Emit extra code to check for buffer overflows, such as stack
|
|
smashing attacks. This is done by adding a guard variable to
|
|
functions with vulnerable objects. This includes functions
|
|
that call alloca, and functions with buffers larger than 8
|
|
bytes. The guards are initialized when a function is entered
|
|
and then checked when the function exits. If a guard check
|
|
fails, an error message is printed and the program exits.
|
|
|
|
config BR2_SSP_STRONG
|
|
bool "-fstack-protector-strong"
|
|
depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
|
|
help
|
|
Like -fstack-protector but includes additional functions to be
|
|
protected - those that have local array definitions, or have
|
|
references to local frame addresses.
|
|
|
|
comment "Stack Smashing Protection strong needs a toolchain w/ gcc >= 4.9"
|
|
depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
|
|
|
|
config BR2_SSP_ALL
|
|
bool "-fstack-protector-all"
|
|
help
|
|
Like -fstack-protector except that all functions are
|
|
protected. This option might have a significant performance
|
|
impact on the compiled binaries.
|
|
|
|
endchoice
|
|
|
|
comment "Stack Smashing Protection needs a toolchain w/ SSP"
|
|
depends on !BR2_TOOLCHAIN_HAS_SSP
|
|
|
|
choice
|
|
bool "libraries"
|
|
default BR2_SHARED_LIBS if BR2_BINFMT_SUPPORTS_SHARED
|
|
default BR2_STATIC_LIBS if !BR2_BINFMT_SUPPORTS_SHARED
|
|
help
|
|
Select the type of libraries you want to use on the target.
|
|
|
|
The default is to build dynamic libraries and use those on the
|
|
target filesystem, except when the architecture and/or the
|
|
selected binary format does not support shared libraries.
|
|
|
|
config BR2_STATIC_LIBS
|
|
bool "static only"
|
|
help
|
|
Build and use only static libraries. No shared libraries will
|
|
be instaled on the target. This potentially increases your
|
|
code size and should only be used if you know what you are
|
|
doing. Note that some packages may not be available when this
|
|
option is enabled, due to their need for dynamic library
|
|
support.
|
|
|
|
config BR2_SHARED_LIBS
|
|
bool "shared only"
|
|
depends on BR2_BINFMT_SUPPORTS_SHARED
|
|
help
|
|
Build and use only shared libraries. This is the recommended
|
|
solution as it saves space and build time.
|
|
|
|
config BR2_SHARED_STATIC_LIBS
|
|
bool "both static and shared"
|
|
depends on BR2_BINFMT_SUPPORTS_SHARED
|
|
help
|
|
Build both shared and static libraries, but link executables
|
|
dynamically. While building both shared and static libraries
|
|
take more time and more disk space, having static libraries
|
|
may be useful to link some of the applications statically.
|
|
|
|
endchoice
|
|
|
|
|
|
config BR2_PACKAGE_OVERRIDE_FILE
|
|
string "location of a package override file"
|
|
default "$(CONFIG_DIR)/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 directories"
|
|
help
|
|
You may specify a space separated list of one or more
|
|
directories 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 from the package's directory in Buildroot.
|
|
|
|
Then for every directory - <global-patch-dir> - that exists in
|
|
BR2_GLOBAL_PATCH_DIR, if the directory
|
|
<global-patch-dir>/<packagename>/<packageversion>/ exists,
|
|
then all *.patch files in this directory will be applied.
|
|
|
|
Otherwise, if the directory <global-patch-dir>/<packagename>
|
|
exists, then all *.patch files in the directory will be
|
|
applied.
|
|
|
|
menu "Advanced"
|
|
|
|
config BR2_COMPILER_PARANOID_UNSAFE_PATH
|
|
bool "paranoid check of library/header paths"
|
|
default y
|
|
help
|
|
By default, when this option is disabled, when the Buildroot
|
|
cross-compiler will encounter an unsafe library or header path
|
|
(such as /usr/include, or /usr/lib), the compiler will display
|
|
a warning.
|
|
|
|
By enabling this option, this warning is turned into an error,
|
|
which will completely abort the build when such unsafe paths
|
|
are encountered.
|
|
|
|
Note that this mechanism is available for both the internal
|
|
toolchain (through the toolchain wrapper and binutils patches)
|
|
and external toolchain backends (through the toolchain wrapper).
|
|
|
|
endmenu
|
|
|
|
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"
|
|
|
|
menu "User-provided options"
|
|
depends on BR2_EXTERNAL != "support/dummy-external"
|
|
|
|
source "$BR2_EXTERNAL/Config.in"
|
|
|
|
endmenu
|