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config BR2_LARGEFILE
bool "Enable large file (files > 2 GB) support?"
depends on !BR2_cris
help
If you are building your own toolchain and you want to
support files larger than 2GB then enable this option.
If you have an external binary toolchain that has been
built with large file support (files > 2GB) then enable
this option.
config BR2_INET_IPV6
bool "Enable IPv6"
help
If you are building your own toolchain and you want to
enable IPV6 support then enable this option.
If you have an external binary toolchain that has been
built with IPV6 support then enable this option.
config BR2_INET_RPC
bool "Enable RPC"
help
Enable RPC. RPC support is needed for nfs.
If you are building your own toolchain and you want to
enable RPC support then enable this option.
If you have an external binary toolchain that has been
built with RPC support then enable this option.
config BR2_ENABLE_LOCALE
bool "Enable toolchain locale/i18n support?"
select BR2_USE_WCHAR
help
If you are building your own toolchain and you want to
enable locale/i18n support then enable this option.
If you have an external binary toolchain that has been
built with locale/i18n support then enable this option.
config BR2_ENABLE_LOCALE_PREGENERATED
bool "Use pregenerated locale data?"
depends on BR2_ENABLE_LOCALE && BR2_TOOLCHAIN_SOURCE && BROKEN # tarball missing
help
Instead of generating the locale data locally you can optionally
download a pregenerated set of locales.
Say N here unless your buildhost lacks locale support and you
desparately want to use internationalization on your target.
config BR2_ENABLE_LOCALE_PURGE
bool "Purge unwanted locales"
help
Explicitly specify what locales to install on target. If N
then all locales supported by packages are installed.
config BR2_ENABLE_LOCALE_WHITELIST
string "Locales to keep"
default "C en_US de fr"
depends on BR2_ENABLE_LOCALE_PURGE
help
Whitespace seperated list of locales to allow on target.
Locales not listed here will be removed from the target.
See 'locale -a' on your host for a list of locales available
on your build host, or have a look in /usr/share/locale in
the target file system for available locales.
Notice that listing a locale here doesn't guarantee that it
will be available on the target - That purely depends on the
support for that locale in the selected packages.
config BR2_USE_WCHAR
bool "Enable WCHAR support"
help
If you are building your own toolchain and you want to
enable WCHAR support then enable this option.
If you have an external binary toolchain that has been built
with WCHAR support then enable this option.
config BR2_SOFT_FLOAT
bool "Use software floating point by default"
depends on BR2_arm || BR2_armeb || BR2_avr32 || BR2_mips || BR2_mipsel || BR2_powerpc || BR2_nios2
help
If your target CPU does not have a Floating Point Unit (FPU) or a
kernel FPU emulator, but you still wish to support floating point
functions, then everything will need to be compiled with soft
floating point support (-msoft-float).
Most people will answer N.
config BR2_USE_SSP
bool "Enable stack protection support"
help
Enable stack smashing protection support using GCCs
-fstack-protector[-all] option.
See http://www.linuxfromscratch.org/hints/downloads/files/ssp.txt
for details.
choice
prompt "Thread library implementation"
default BR2_PTHREADS_OLD
help
If you are building your own toolchain then select the type of
libpthreads you want to use.
Not all thread variants work with all versions of uClibc,
the "linuxthreads (stable/old)" may be a working fallback
if you need threading at all.
If you have an external binary toolchain then select the type
of libpthreads it was built with.
config BR2_PTHREADS_NONE
bool "none"
config BR2_PTHREADS
bool "linuxthreads"
config BR2_PTHREADS_OLD
bool "linuxthreads (stable/old)"
config BR2_PTHREADS_NATIVE
bool "Native POSIX Threading (NPTL)"
endchoice
config BR2_PROGRAM_INVOCATION
bool "Enable 'program invocation name'"
help
Support for the GNU-specific program_invocation_name and
program_invocation_short_name strings. Some GNU packages
(like tar and coreutils) utilize these for extra useful
output, but in general are not required.
If you have an external binary toolchain that has been built
with program invocation support then enable this option.
config BR2_GCC_CROSS_CXX
bool
help
If you are building your own toolchain and want to build
a C++ cross-compiler this needs to be enabled.
If you have an external binary toolchain that has a C++ compiler
and you want to use it then you need to enable this option.
config BR2_INSTALL_LIBSTDCPP
bool "Build/install c++ compiler and libstdc++?"
select BR2_LARGEFILE if (!BR2_GCC_SUPPORTS_SYSROOT && BR2_TOOLCHAIN_SOURCE)
select BR2_GCC_CROSS_CXX
help
If you are building your own toolchain and want to build and install
the C++ compiler and library then you need to enable this option.
If you have an external toolchain that has been built with C++
support and you want to use the compiler / library then you need
to select this option.
config BR2_TARGET_OPTIMIZATION
string "Target Optimizations"
default "-Os -pipe"
help
Optimizations to use when building for the target host.
if BR2_TOOLCHAIN_SOURCE
source "toolchain/elf2flt/Config.in"
source "toolchain/mklibs/Config.in"
source "toolchain/sstrip/Config.in"
config BR2_ENABLE_MULTILIB
bool "Enable multilib support?"
help
Build libraries to support different ABIs.
config BR2_VFP_FLOAT
bool "Use ARM Vector Floating Point unit"
depends on !BR2_SOFT_FLOAT
depends on BR2_arm || BR2_armeb
help
Setting this option will enable the "-mfpu=vfp" option.
If your ARM CPU has a Vector Floating Point Unit (VFP)
and the toolchain supports the option, then the
code can be optimized.
Most people will answer N.
config BR2_CROSS_TOOLCHAIN_TARGET_UTILS
bool "Include target utils in cross toolchain"
default y
help
When using buildroot to build a deployable cross toolchain,
it is handy to include certain target apps with that toolchain
as a convenience.
Examples include ldd, gdbserver, and strace.
Answer Y if you want these apps (if built) copied into the
cross toolchain dir under <arch>-linux-uclibc/target_utils/.
endif
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