@@ -120,9 +120,9 @@ 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.
+ 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".
@@ -162,8 +162,8 @@ config BR2_DEFCONFIG
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.
+ When running 'make savedefconfig', the defconfig file will be
+ saved in this location.
config BR2_DL_DIR
string "Download dir"
@@ -171,7 +171,8 @@ config BR2_DL_DIR
help
Directory to store all the source files that we need to fetch.
If the Linux shell environment has defined the BR2_DL_DIR
- environment variable, then this overrides this configuration item.
+ environment variable, then this overrides this configuration
+ item.
The default is $(TOPDIR)/dl
@@ -179,9 +180,9 @@ config BR2_HOST_DIR
string "Host dir"
default "$(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.
+ 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
@@ -191,9 +192,9 @@ 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.
+ 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)
- local URIs of the form file://absolutepath
@@ -206,11 +207,11 @@ config BR2_PRIMARY_SITE_ONLY
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.
+ 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
+ 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
@@ -219,9 +220,9 @@ 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.
+ 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"
@@ -232,8 +233,8 @@ config BR2_KERNEL_MIRROR
mirror. By default, a CDN is used, which automatically
redirects to a mirror geographically close to you.
- Have a look on the kernel.org site for a list of mirrors, then enter
- the URL to the base directory. Examples:
+ 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
@@ -247,8 +248,8 @@ config BR2_GNU_MIRROR
mirror. By default, a generic address is used, which
automatically selects an up-to-date and local mirror.
- Have a look on the gnu.org site for a list of mirrors, then enter
- the URL to the base directory. Examples:
+ 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
@@ -265,8 +266,8 @@ config BR2_CPAN_MIRROR
string "CPAN mirror (Perl packages)"
default "http://cpan.metacpan.org"
help
- CPAN (Comprehensive Perl Archive Network) is a repository
- of Perl packages. It has multiple software mirrors scattered
+ CPAN (Comprehensive Perl Archive Network) is a repository of
+ Perl packages. It has multiple software mirrors scattered
around the world. This option allows you to select a mirror.
The list of mirrors is available at:
@@ -281,23 +282,21 @@ config BR2_JLEVEL
default "0"
help
Number of jobs to run simultaneously. If 0, determine
- automatically according to number of CPUs on the host
- system.
+ 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. By default, the cache is stored in
+ This option will enable the use of ccache, a compiler cache.
+ It will cache the result of previous builds to speed up future
+ builds. By default, 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.
+ 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.
if BR2_CCACHE
@@ -310,16 +309,19 @@ config BR2_CCACHE_DIR
config BR2_CCACHE_INITIAL_SETUP
string "Compiler cache initial setup"
help
- Initial ccache settings to apply, such as --max-files or --max-size.
+ Initial ccache settings to apply, such as --max-files or
+ --max-size.
- For example, if your project is known to require more space than the
- default max cache size, then you might want to increase the cache size
- to a suitable amount using the -M (--max-size) option.
+ For example, if your project is known to require more space
+ than the default max cache size, then you might want to
+ increase the cache size to a suitable amount using the -M
+ (--max-size) option.
- The string you specify here is passed verbatim to ccache. Refer to
- ccache documentation for more details.
+ The string you specify here is passed verbatim to ccache.
+ Refer to ccache documentation for more details.
- These initial settings are applied after ccache has been compiled.
+ These initial settings are applied after ccache has been
+ compiled.
config BR2_CCACHE_USE_BASEDIR
bool "Use relative paths"
@@ -328,25 +330,25 @@ config BR2_CCACHE_USE_BASEDIR
Allow ccache to convert absolute paths within the output
directory into relative paths.
- During the build, many -I include directives are given with
- an absolute path. These absolute paths end up in the hashes
- that are computed by ccache. Therefore, when you build from a
- different directory, the hash will be different and the
- cached object will not be used.
+ During the build, many -I include directives are given with an
+ absolute path. These absolute paths end up in the hashes that
+ are computed by ccache. Therefore, when you build from a
+ different directory, the hash will be different and the cached
+ object will not be used.
To improve cache performance, set this option to y. This
allows ccache to rewrite absolute paths within the output
- directory into relative paths. Note that only paths within
- the output directory will be rewritten; therefore, if you
- change BR2_HOST_DIR to point outside the output directory and
+ directory into relative paths. Note that only paths within the
+ output directory will be rewritten; therefore, if you change
+ BR2_HOST_DIR to point outside the output directory and
subsequently move it to a different location, this will lead
to cache misses.
This option has as a result that the debug information in the
object files also has only relative paths. Therefore, make
sure you cd to the build directory before starting gdb. See
- the section "COMPILING IN DIFFERENT DIRECTORIES" in the
- ccache manual for more information.
+ the section "COMPILING IN DIFFERENT DIRECTORIES" in the ccache
+ manual for more information.
endif
@@ -400,11 +402,11 @@ choice
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.
+ 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"
@@ -414,9 +416,9 @@ config BR2_DEBUG_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.
+ 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
@@ -429,16 +431,15 @@ config BR2_STRIP_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.
+ 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_none
bool "none"
help
- Do not strip binaries and libraries in the target
- filesystem.
+ Do not strip binaries and libraries in the target filesystem.
endchoice
config BR2_STRIP_EXCLUDE_FILES
@@ -446,19 +447,19 @@ config BR2_STRIP_EXCLUDE_FILES
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.
+ 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.
+ 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"
@@ -474,64 +475,67 @@ config BR2_OPTIMIZE_0
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
+ 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.
+ -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
+ 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
+ -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.
+ 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_G
bool "optimize for debugging"
depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
help
Optimize for debugging. This enables optimizations that do not
- interfere with debugging. It should be the optimization level of
- choice for the standard edit-compile-debug cycle, offering a
- reasonable level of optimization while maintaining fast compilation
- and a good debugging experience.
+ interfere with debugging. It should be the optimization level
+ of choice for the standard edit-compile-debug cycle, offering
+ a reasonable level of optimization while maintaining fast
+ compilation and a good debugging experience.
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
+ 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
@@ -543,13 +547,13 @@ config BR2_GOOGLE_BREAKPAD_ENABLE
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.
+ 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
@@ -577,12 +581,13 @@ choice
Enable stack smashing protection support using GCC's
-fstack-protector option family.
- See http://www.linuxfromscratch.org/hints/downloads/files/ssp.txt
+ 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.
+ 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"
@@ -630,20 +635,19 @@ choice
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.
+ 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.
+ 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"
@@ -669,29 +673,30 @@ config BR2_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.
+ 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:
+ 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.
+ 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.
+ <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.
+ Otherwise, if the directory <global-patch-dir>/<packagename>
+ exists, then all *.patch files in the directory will be
+ applied.
menu "Advanced"
@@ -700,13 +705,13 @@ config BR2_COMPILER_PARANOID_UNSAFE_PATH
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.
+ 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.
+ 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 gcc and binutils patches) and external
Many lines are not correctly wrapped to 72 column width, so rewrap them. Signed-off-by: Martin Kelly <martin@surround.io> --- Config.in | 301 ++++++++++++++++++++++++++++++++------------------------------ 1 file changed, 153 insertions(+), 148 deletions(-)