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# C library options
menu "C-library"
config LIBC
string
config LIBC_VERSION
string
help
Enter the date of the snapshot you want to use in the form: YYYYMMDD
where YYYY is the 4-digit year, MM the 2-digit month and DD the 2-digit
day in the month.
Please note:
- glibc has snapshots done every monday, and only the last ten are kept.
- uClibc has daily snapshots, and only the last 30-or-so are kept.
So if you want to be able to re-build your toolchain later, you will
have to save your C library tarball by yourself.
source "config.gen/libc.in"
config LIBC_SUPPORT_THREADS_ANY
bool
config LIBC_SUPPORT_THREADS_NATIVE
bool
select LIBC_SUPPORT_THREADS_ANY
config LIBC_SUPPORT_THREADS_LT
bool
select LIBC_SUPPORT_THREADS_ANY
config LIBC_SUPPORT_THREADS_POSIX
bool
select LIBC_SUPPORT_THREADS_ANY
config LIBC_SUPPORT_THREADS_NONE
bool
config LIBC_PROVIDES_CXA_ATEXIT
bool
# C libraries should provide other values
config THREADS
string
default "none" if THREADS_NONE
if ! LIBC_none
comment "Common C library options"
choice
bool
prompt "Threading implementation to use:"
default THREADS_NATIVE if LIBC_SUPPORT_THREADS_NATIVE
default THREADS_LT if LIBC_SUPPORT_THREADS_LT
default THREADS_POSIX if LIBC_SUPPORT_THREADS_POSIX
default THREADS_NONE
config THREADS_NATIVE
bool
prompt "native"
depends on LIBC_SUPPORT_THREADS_NATIVE
help
This selects the native threads implementation for the selected
system and C library.
For example, on Linux with glibc, this is NPTL; on Windows with
mingw, this is win32.
config THREADS_LT
bool
prompt "linuxthreads"
depends on LIBC_SUPPORT_THREADS_LT
config THREADS_POSIX
bool
prompt "posix"
depends on LIBC_SUPPORT_THREADS_POSIX
config THREADS_NONE
bool
prompt "none"
depends on LIBC_SUPPORT_THREADS_NONE
endchoice
config CREATE_LDSO_CONF
bool "Create /etc/ld.so.conf file"
depends on SHARED_LIBS
default y if MULTILIB
help
Create /etc/ld.so.conf file in the sysroot directory for the
target.
Note that Buildroot errors out if it sees /etc/ld.so.conf.
config LDSO_CONF_EXTRA_DIRS_ARRAY
string "Extra directories to add to /etc/ld.so.conf"
depends on CREATE_LDSO_CONF
help
Extra directories to include in /etc/ld.so.conf. The directories
will be augmented per compiler's multilib specification,
if applicable. For example, if the compiler's multilibs include
/lib and /lib64, and you specify /usr/local/lib here, ld.so.conf
will have both /usr/local/lib and /usr/local/lib64.
config LIBC_XLDD
bool
prompt "Install a cross ldd-like helper"
depends on SHARED_LIBS
depends on ! BARE_METAL
default y
help
Say 'Y' here if you want to have a ldd-like helper that
you can run on your build system, and that will (try to)
resolve shared libraries dependencies as if run on the
target.
Note that the cross-ldd helper is not a full replacement
for the native ldd. Please see the help, by running it
with '--help' for more explanations.
source "config.gen/libc.in.2"
endif # ! LIBC_none
endmenu
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