378 lines
11 KiB
Plaintext
378 lines
11 KiB
Plaintext
#
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mainmenu "Buildroot2 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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default "2009.02-svn"
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source "target/Config.in.arch"
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source "target/device/Config.in"
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menu "Build options"
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config BR2_WGET
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string "Wget command"
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default "wget --passive-ftp -nd"
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config BR2_SVN_CO
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string "Subversion (svn) command to download source tree"
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default "svn co"
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config BR2_SVN_UP
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string "Subversion (svn) command to update source tree"
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default "svn up"
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config BR2_GIT
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string "Git command to download source tree"
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default "git clone"
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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.
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zcat is identical to gunzip -c except that the former may
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not be 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_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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config BR2_DL_DIR
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string "Download dir"
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default "$(BASE_DIR)/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 BUILDROOT_DL_DIR
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environment variable, then this overrides this configuration item.
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The default is $(BASE_DIR)/dl
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config BR2_COPYTO
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string "Copy result to..."
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default ""
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help
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Setting this variable will (eventually) override
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any other copyto configurations in buildroot.
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source "target/device/Config.in.mirrors"
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config BR2_STAGING_DIR
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string "Toolchain and header file location?"
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default "$(BUILD_DIR)/staging_dir"
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help
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This is the location where the toolchain will be installed. The
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toolchain will not work if it is moved from this location.
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Therefore, if you wish to package up a uClibc toolchain, it is
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important that is is set to the final location where the toolchain
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will be used.
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Most people will leave this set to the default value of
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"$(BUILD_DIR)/staging_dir".
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config BR2_FPU_SUFFIX
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bool "Add '_nofpu' suffix for softfloat toolchains"
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help
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If the toolchain is configured to use softfloat, then
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the "_nofpu" suffix will be added to the toolchain build
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directory name and to any rootfs image name
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config BR2_TOPDIR_PREFIX
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string "Custom build dir prefix"
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default ""
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help
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Add a custom string to the beginning of the build directories.
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build_ARCH -> [PREFIX]_build_ARCH
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toolchain_build_ARCH -> [PREFIX]_toolchain_build_ARCH
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config BR2_TOPDIR_SUFFIX
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string "Custom build dir suffix"
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default ""
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help
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Add a custom string to the end of the build directories.
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build_ARCH -> build_ARCH_[SUFFIX]
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toolchain_build_ARCH -> toolchain_build_ARCH_[SUFFIX]
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config BR2_ROOTFS_PREFIX
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string "Custom root fs prefix"
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default "rootfs"
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help
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Add a custom string to the beginning of the root file system name.
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config BR2_ROOTFS_SUFFIX
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string "Custom root fs suffix"
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default ""
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help
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Add a custom string to the end of the root file system name.
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config BR2_GNU_BUILD_SUFFIX
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string "GNU build hostname suffix"
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default "pc-linux-gnu"
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help
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The string used to pass to configure scripts via the
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--build= option. Just specify the suffix here, the leading
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arch will be filled in automatically.
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Here's some copy and paste build host options for you:
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linux: pc-linux-gnu
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cygwin: pc-cygwin
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os x: apple-darwin7 / apple-darwin8
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config BR2_GNU_TARGET_SUFFIX
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string "GNU target suffix"
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default "linux-uclibcgnueabi" if BR2_ARM_EABI
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default "linux-uclibc"
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help
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The string used to pass to configure scripts via the
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--target= option. Just specify the suffix here, the leading
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arch will be filled in automatically.
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Most users will want to stick with the default setting, though
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other users (most notably ARM EABI) like to add on to this in
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order to stay in line with gcc conventions.
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Default options are:
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linux-uclibcgnueabi for ARM EABI
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linux-uclibc for the rest
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gnuhurd-uclibc for the hurd
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config BR2_JLEVEL
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int "Number of jobs to run simultaneously"
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default "1"
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help
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Number of jobs to run simultaneously
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config BR2_PREFER_IMA
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bool "prefer IMA compiles"
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help
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Where possible, compile package with Inter Module Analysis.
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This potentially uses alot of system resources on your compile
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host with the benefit of creating smaller binaries for the target.
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If unsure, say No.
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WARNING: This is highly experimental at the moment.
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config BR2_DEPRECATED
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bool "Show packages that are deprecated or obsolete"
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help
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This option hides outdated/obsolete versions of packages.
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config BR2_RECENT
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bool "Show packages that are of the latest major version"
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default y
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help
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This option show recent versions of packages.
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config BR2_CONFIG_CACHE
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bool "Use a central configure cache file"
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help
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This determines if a central config cache is used by
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packages, reducing the configure time for packages as each
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one caches its findings.
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config BR2_ENABLE_DEBUG
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bool "build packages with debugging symbols"
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select BR2_PACKAGE_GDB_SERVER
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help
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Build packages with debugging symbols
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enabled
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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
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for making backtraces in parts of the program that
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you don't plan to debug. This includes descriptions
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of functions and external variables, but no information
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about local variables and no 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
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macro definitions present in the program. Some debuggers
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support 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"
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default BR2_STRIP_strip
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help
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Select whether to strip binaries and libraries for the target
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or not.
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strip is the normal strip command
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sstrip is a strip that discards more than the normal strip
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none do not strip (only for debugging!)
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config BR2_STRIP_strip
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bool "strip"
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depends on !BR2_ENABLE_DEBUG && !BR2_ELF2FLT
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help
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strip is the normal strip command
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config BR2_STRIP_sstrip
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bool "sstrip"
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select BR2_PACKAGE_SSTRIP_HOST
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depends on !BR2_ENABLE_DEBUG && !BR2_ELF2FLT
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help
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sstrip is a strip that discards more than the normal strip
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config BR2_STRIP_none
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bool "none"
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help
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none do not strip (only for debugging!)
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endchoice
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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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depends on !BR2_PACKAGE_LINUX
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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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depends on !BR2_PACKAGE_LINUX
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help
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Optimize. Optimizing compilation takes somewhat more time,
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and a lot more memory for a large function. With -O, the
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compiler tries to reduce code size and execution time,
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without performing any optimizations that take a great deal
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of 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
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-O also turns on -fomit-frame-pointer on machines where doing
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so 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 optimizations
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that do not involve a space-speed tradeoff. The compiler does not
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perform loop unrolling or function inlining when you specify -O2.
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As compared to -O, this option increases both compilation time and
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the performance of the generated code. -O2 turns on all optimization
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flags specified by -O. It also turns on the following optimization
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flags: -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 -frerun-cse-after-loop
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-frerun-loop-opt -fcaller-saves -fpeephole2 -fschedule-insns
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-fschedule-insns2 -fsched-interblock -fsched-spec -fregmove
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-fstrict-aliasing -fdelete-null-pointer-checks -freorder-blocks
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-freorder-functions -falign-functions -falign-jumps -falign-loops
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-falign-labels -ftree-vrp -ftree-pre
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Please 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 -O2
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and also turns on the -finline-functions, -funswitch-loops and
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-fgcse-after-reload options.
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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 not
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typically increase code size. It also performs further optimizations
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designed to reduce code size. -Os disables the following optimization
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flags: -falign-functions -falign-jumps -falign-loops -falign-labels
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-freorder-blocks -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_PREFER_STATIC_LIB
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bool "prefer static libraries"
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help
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Where possible, build and use static libraries for the target.
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This potentially increases your code size and should only be
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used if you know what you do.
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The default is to build dynamic libraries and use those on
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the target filesystem.
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WARNING: This is highly experimental at the moment.
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config BR2_HAVE_MANPAGES
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bool "manpages on the target"
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help
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Leave the manpages on the target.
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If you say n here, your target will not contain any
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manpage.
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config BR2_HAVE_INFOPAGES
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bool "infopages on the target"
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help
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Leave the infopages on the target.
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If you say n here, your target will not contain any
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infopage.
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config BR2_HAVE_DOCUMENTATION
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bool "documentation on the target"
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help
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Leave the documentation on the target.
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If you say n here, your target will not contain any
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documentation.
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config BR2_HAVE_DEVFILES
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bool "development files in target filesystem"
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help
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Install headers and static libraries in the
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target filesystem
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source package/gnuconfig/Config.in
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endmenu
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source "toolchain/Config.in"
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source "package/Config.in"
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source "target/Config.in"
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