kumquat-buildroot/toolchain/Config.in
Thomas Petazzoni 8d29893893 eglibc: enable support in the Buildroot toolchain backend
Using the newly introduced 'eglibc' package, this commit enables the
option of building a toolchain using the eglibc C library in the
Buildroot toolchain backend.

In details, this commit:

 * Creates a choice to select uClibc or eglibc in the Buildroot
   toolchain backend (in toolchain/toolchain-buildroot/Config.in), and
   removes the fact that the Buildroot toolchain backend forcefully
   enables uClibc (toolchain/Config.in).

 * Creates a BUILDROOT_LIBC variables, which points to the package
   implementing the C library (i.e either 'uclibc' or 'eglibc').

 * Modifies the gcc-final and gcc-intermediate makefiles to use the
   BUILDROOT_LIBC variable instead of hardcoding the use of uclibc.

 * Ensures that TLS support is always enabled when building eglibc.

[Peter: fix commit text to refer to BUILDROOT_LIBC]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2013-07-04 11:08:27 +02:00

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menu "Toolchain"
# Should be selected for glibc or eglibc
config BR2_TOOLCHAIN_USES_GLIBC
bool
select BR2_LARGEFILE
select BR2_INET_IPV6
select BR2_USE_WCHAR
select BR2_ENABLE_LOCALE
select BR2_TOOLCHAIN_HAS_THREADS
select BR2_TOOLCHAIN_HAS_THREADS_DEBUG
select BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS
config BR2_TOOLCHAIN_USES_UCLIBC
bool
choice
prompt "Toolchain type"
help
Select whether to use the toolchain provided by buildroot
or an external toolchain.
Some vendors provide toolchains in binary form, some in
source form.
config BR2_TOOLCHAIN_BUILDROOT
bool "Buildroot toolchain"
depends on !BR2_microblaze && !BR2_aarch64
select BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS
config BR2_TOOLCHAIN_EXTERNAL
bool "External toolchain"
help
Select if you want to use an existing cross-compiling
toolchain. Buildroot can either download automatically a
toolchain, or use an already installed toolchain.
config BR2_TOOLCHAIN_CTNG
bool "Crosstool-NG toolchain"
depends on BR2_DEPRECATED
depends on !BR2_microblaze && !BR2_aarch64 && !BR2_xtensa && !BR2_arc
select BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS
help
Say 'y' if you want to generate the toolchain with crosstool-NG
(http://crosstool-ng.org).
This is considered experimental, and you can expect some breakage.
endchoice
source "toolchain/toolchain-buildroot/Config.in"
source "toolchain/toolchain-external/Config.in"
source "toolchain/toolchain-crosstool-ng/Config.in"
source "toolchain/toolchain-common.in"
source "toolchain/toolchain-buildroot/Config.in.2"
endmenu