Previously, gen-bootlin-toolchains did not add a `depends` guard to
limit the available toolchains based on the minimum required GCC version
for the user selected CPU tuning.
Now, the proper BR2_ARCH_NEEDS_GCC_AT_LEAST_X guard will be added based
on the version of GCC provided by the toolchain.
Signed-off-by: Vincent Fazio <vfazio@gmail.com>
[yann.morin.1998@free.fr: regenerate the toolchain list]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Previously, it was possible to select an external toolchain that did not
support the GCC arch tuning the user had selected. This is problematic
because it can lead to confusing error messages during builds [0].
Now, external toolchain selections will be filtered to only those that
support the required GCC version specified by the target arch tuning.
Note: this patch does not touch the Bootlin toolchain config file as it
is generated by a script.
Additional note: there is "soft" support for toolchains prior to GCC 4.8
but there are no accompanying BR2_ARCH_NEEDS_GCC_AT_LEAST_X symbols.
Instead of adding those, just use BR2_ARCH_NEEDS_GCC_AT_LEAST_4_8 which
is the minimum GCC version with claimed support [1].
[0]: https://lists.buildroot.org/pipermail/buildroot/2023-August/671877.html
[1]: https://buildroot.org/downloads/manual/manual.html#requirement-mandatory
Signed-off-by: Vincent Fazio <vfazio@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Fix the following build failure:
>>> toolchain-external-codescape-img-mips 2018.09-02 Copying gdbserver
Could not find gdbserver in external toolchain
Fixes:
- http://autobuild.buildroot.org/results/b0786965e0b249c8168df855682e54cfe95fa0cc
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Fix the following build failure:
>>> toolchain-external-codescape-mti-mips 2018.09-02 Copying gdbserver
Could not find gdbserver in external toolchain
Fixes:
- http://autobuild.buildroot.org/results/ead304285a9cf32bf6b9dcc7fc30acece25ec680
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
e2fsprogs package fails to build for the SH4 architecture due to a gcc
13.2.0 bug that leads to:
during RTL pass: sh_treg_combine2
rw_bitmaps.c: In function read_bitmaps_range_start:
internal compiler error: Aborted
Let's add gcc bug to avoid to deal with architectures in packages
when a gcc bug arises. Let's instead deal directly with gcc
bug number.
It's been reported upstream:
https://gcc.gnu.org/bugzilla//show_bug.cgi?id=111001
No need to backport as gcc 13.20 was introduced recently in
buildroot.
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
libheif package fails to build for the M68K architecture due to a binutils
bug that leads to:
Internal error in emit_expr_encoded at dw2gencfi.c:215
Let's add binutils bug to avoid to deal with architectures in packages
when a binutils bug arises. Let's instead deal directly with binutils
bug number.
It's been reported upstream:
https://sourceware.org/bugzilla/show_bug.cgi?id=30730
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This patch allows to use an external toolchain based on gcc 13.
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
In order to add gcc 13 support for internal and external toolchain in
follow-up commits, introduce BR2_TOOLCHAIN_GCC_AT_LEAST_13 symbol.
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
check_fortran will display an error message if there is no Fortran
compiler in the toolchain. In the past, running into this error message
would be unlikely, since the Fortran test was only execuded when
BR2_TOOLCHAIN_HAS_FORTRAN was set.
However, since commit c7f641cbaa (toolchain/toolchain-external: always
call checks with dependencies), the Fortran check is unconditional. The
error itself benign, and the macro will handle the situation correctly,
since that is what it is designed to do. However, the error message
looks ugly and can be confusing.
[...]
>>> toolchain-external-custom Extracting
>>> toolchain-external-custom Patching
>>> toolchain-external-custom Configuring
/bin/bash: line 1: .../bin/aarch64-linux-gfortran: No such file or directory
>>> toolchain-external-custom Building
... everything continues normally ...
Let's suppress the error message, since triggerig the error is an
integral part of how the test works and doesn't mean that anything is
wrong.
Signed-off-by: Markus Mayer <mmayer@broadcom.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Call these unconditionally to make sure proper support is flagged so
proper dependencies are included in the resultant filesystem.
Signed-off-by: Vincent Fazio <vfazio@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Previously, it was possible for external toolchains to be used that had
support for languages or libraries that Buildroot was not aware of.
If Buildroot is not made aware of this support, it will not know to copy
the requisite libraries into the filesystem.
This is problematic as packages may perform their own checks [0] to find
out what the toolchain supports and builds will link against libraries
from the toolchain but will be missing dependencies in the filesystem.
Now, the support helpers alert the user when a toolchain supports a
language or library that has not been set in the Buildroot configuration.
Also, while we're here, add `-ffree-form` to the Fortran check to
suppress a meaningless warning.
[0]: https://bugs.busybox.net/show_bug.cgi?id=15634
Signed-off-by: Vincent Fazio <vfazio@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
The fragments provided by toolchains.bootlin.com were incorrectly
flagging toolchains as not having OpenMP support while they had it
[0]. This has been fixed in toolchains.bootlin.com, so a run of
gen-bootlin-toolchains has allowed to adjust the toolchain definitions
in Buildroot, leading to this commit.
OpenMP support needs to be flagged so the proper libraries get copied
into the resultant filesystem to avoid missing dependencies [1].
[0]: https://github.com/bootlin/toolchains-builder/issues/60
[1]: https://bugs.busybox.net/show_bug.cgi?id=15634
Signed-off-by: Vincent Fazio <vfazio@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Updated to gcc 12.2, gdb 12, binutils 2.39, glibc 2.36.
Upstream changed version scheme previously based on the release
date (2021.07) to a version scheme based on gcc version (12.2.rel1).
The runtime issue (Illegal instruction on some x86 host) [1] seems to
be fixed since it can't be reproduced anymore on the same host.
The x86_64 host variant prebuilt toolchain is built on RHEL7
(glibc 2.17) and is likely also be useable on OS versions like
RHEL8, Ubuntu 18.04 or later.
The AArch64 host variant prebuilt toolchain is built on Ubuntu 18.04
(glibc 2.27) is likely also be useable on OS versions like RHEL8,
Ubuntu 18.04 or later.
Use the sha256 hash that is now provided by upsteam.
[1] https://bugs.linaro.org/show_bug.cgi?id=5825#c19
[2] https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Updated to gcc 12.2, gdb 12, binutils 2.39, glibc 2.36.
Upstream changed version scheme previously based on the release
date (2021.07) to a version scheme based on gcc version (12.2.rel1).
The runtime issue (Illegal instruction on some x86 host) [1] seems to
be fixed since it can't be reproduced anymore on the same host.
The x86_64 host variant prebuilt toolchain is built on RHEL7
(glibc 2.17) and is likely also be useable on OS versions like
RHEL8, Ubuntu 18.04 or later.
The AArch64 host variant prebuilt toolchain is built on Ubuntu 18.04
(glibc 2.27) is likely also be useable on OS versions like RHEL8,
Ubuntu 18.04 or later.
Use the sha256 hash that is now provided by upsteam.
Tested with qemu_aarch64_virt_defconfig.
[1] https://bugs.linaro.org/show_bug.cgi?id=5825#c19
[2] https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Updated to gcc 12.2, gdb 12, binutils 2.39, glibc 2.36.
Upstream changed version scheme previously based on the release
date (2021.07) to a version scheme based on gcc version (12.2.rel1).
The runtime issue (Illegal instruction on some x86 host) [1] seems to
be fixed since it can't be reproduced anymore on the same host.
The x86_64 host variant prebuilt toolchain is built on RHEL7
(glibc 2.17) and is likely also be useable on OS versions like
RHEL8, Ubuntu 18.04 or later.
The AArch64 host variant prebuilt toolchain is built on Ubuntu 18.04
(glibc 2.27) is likely also be useable on OS versions like RHEL8,
Ubuntu 18.04 or later.
Use the sha256 hash that is now provided by upsteam.
Tested with qemu_arm_vexpress_defconfig.
[1] https://bugs.linaro.org/show_bug.cgi?id=5825#c19
[2] https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
"Toolchain prefix" option apparently doesn't have any help describing
it, which causes confusion when using external toolchain. Leaving this
option at default prefix name ("$(ARCH)-linux") when external toolchain
components are called with different prefix (e.g.
"$(ARCH)-unknown-linux-gnu") may cause build failure unless the prefix
symlink is already in place (e.g. when using Buildroot-generated
toolchain as external toolchain).
Describe the option to clarify.
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
This toolchain doesn't support MIPS32r5 and MIPS64r5 and the toolchain
infrastructure fail to import the sysroot to staging.
Fixes: c4a62fa627
Fixes: http://autobuild.buildroot.org/results/701/701e8a5f713f7bdd1f32a4c549cdaac580e2522a/
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>
Since the commit [1], the utils/genrandconfig script improved the
configuration randomization used by autobuilders. Since then it can
generate a configuration that is not suitable for an external toolchain
such the "Codescape IMG GNU Linux Toolchain".
Indeed this toolchain can be selected for mips32r5 or mips64r5 while only
mips32r2 or mips64r2 are really supported. The toolchain issue will be
fixed in a followup change.
We want to catch such issue in check_unusable_toolchain function otherwise
it is detected late during the sysroot import into staging and trigger
a weird error message:
ln: failed to create symbolic link 'output/host/mips64el-buildroot-linux-gnu/sysroot//nvmedata/autobuild/instance-25/buildroot/libc.a': No such file or directory
ln: failed to create symbolic link 'output/host/mips64el-buildroot-linux-gnu/sysroot/usr//nvmedata/autobuild/instance-25/buildroot/libc.a': No such file or directory
This is similar test than for the main sysroot check but this time we have
to use the toolchain cflags to check the architecture sysroot.
If the architecture sysroot doesn't exist, the toolchain will reply with
"libc.a".
Either the toolchain is really broken or we used a wrong target
architecture variant. In the later case, the toolchain infrastructure will
print a meaningful error message.
Note: We also may get a similar issue using the toolchain-external-custom package
if a toolchain is used with a wrong target architecture variant.
Fixes:
http://autobuild.buildroot.org/results/701/701e8a5f713f7bdd1f32a4c549cdaac580e2522a/
[1] aeee90ec10
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Giulio Benetti <giulio.benetti@benettiengineering.com>
Cc: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>
libjxl is the reference implementation of JPEG XL (encoder and decoder).
https://github.com/libjxl/libjxl
Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit modifies the toolchain-wrapper to make sure that the
CCACHE_COMPILERCHECK and CCACHE_BASEDIR are only set if ccache support
is enabled. Indeed, when BR2_USE_CCACHE is not set (or to a value
different than 1), we don't call the compiler with ccache, so there is
no reason to set those ccache environment variables, and they could
potentially conflict with a separate usage of ccache, outside of
Buildroot, for example when using the Buildroot SDK.
In particular, the value of CCACHE_BASEDIR doesn't not make any sense
when the Buildroot toolchain is not used during the Buildroot build,
as it points to the output directory $(BASE_DIR).
We pay attention to also not show those variables as being set in the
BR2_DEBUG_WRAPPER dump.
To help a little bit with this, a ccache_enabled boolean is introduced
to indicate when ccache is being used.
There is still quite a bit of #ifdef-ery involved, but it's not easy
to find a simpler way to organize the code.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Tested-By: Vincent Fazio <vfazio@xes-inc.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
copy_toolchain_lib_root was not handling the case of "readlink"
returning nothing, which will happen if the symlink it is trying to
resolve does not point to a valid file on the build host. This
shouldn't happen, but it can.
The end result of this situation would be an endless loop of error
messages that would only end if aborted manually.
[...]
cp: missing destination file operand after
'/local/users/mmayer/buildroot/output/arm64/target//'
Try 'cp --help' for more information.
readlink: missing operand
Try 'readlink --help' for more information.
basename: missing operand
Try 'basename --help' for more information.
dirname: missing operand
Try 'dirname --help' for more information.
^C
make[1]: *** [package/pkg-generic.mk:384:
Instead of looping endlessly without explanation, let's abort and
inform the user that something seems amiss with their setup.
Signed-off-by: Markus Mayer <mmayer@broadcom.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is the result of running
support/scripts/gen-bootlin-toolchains now that 2022.08 toolchains
have been made available.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Commit "9a8ec9195c toolchain/toolchain-buildroot: migrate to virtual
package infrastructure" made the packages toolchain and
toolchain-buildroot to use the virtual package infra even they being
generic packages.
This works because on package/pkg-virtual.mk when a package do not
define neither _PROVIDES_ or _HAS_ symbols, only _IS_VIRTUAL is set to
YES and _VERSION and _SOURCE are set to empty before relaying the call
to inner-generic-package.
Add a comment explaining why the virtual package infra is used in these
cases.
Cc: Giulio Benetti <giulio.benetti@benettiengineering.com>
Cc: Romain Naour <romain.naour@gmail.com>
Cc: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
When we introduced support for the paranoid check of unsafe libraries
and headers path with commit 4ac8f78d37 (Add option for paranoid
unsafe path checking) back in 2014, we made it optional, as we expected
that would break quite a few packages.
Now, almost 8 years later, we only have three packages that explicitly
reference the option (dillo, gnuradio, and libtalloc), either in a patch
or in their .mk.
The option has been enabled by default since 2016, with 61c8854cef
(toolchain: enable paranoid unsafe path check by default), and that has
not triggered many build failures in a while.
The minimal defconfig used by test-pkg has also had it enabled as of
b6c98b3549 (minimal.config: add BR2_COMPILER_PARANOID_UNSAFE_PATH=y)
in 2017.
It is time to make that globally unconditional now.
There is still a remnant, in our binutils patches. As our toolchain may
get used outside of Buildroot, people may got the expectation that path
poisoning is only a warning, so we keep the current behaviour.
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Romain Naour <romain.naour@gmail.com>
Acked-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Since glibc 2.33 (upstream commit
7a55dd3fb6d2c307a002a16776be84310b9c8989), headers >= 5.4.0 are needed
to build glibc for RISC-V 32-bit. Indeed
sysdeps/unix/sysv/linux/riscv/configure.ac contains:
if test $libc_cv_riscv_int_abi = ilp32; then
arch_minimum_kernel=5.4.0
fi
In order to take into account this dependency, we add the appropriate
logic in package/glibc/Config.in and
toolchain/toolchain-buildroot/Config.in.
This change means that if headers < 5.4.0 are selected, then no C
library at all will be available for RISC-V 32-bit, as glibc is the
only C library supporting RISC-V 32-bit currently. However, thanks to
the recent addition of BR2_TOOLCHAIN_BUILDROOT_NONE, the
choice...endchoice for the C library selection will not be empty,
allowing the user to see the Config.in comment explaining why glibc
can't be selected.
Therefore, technically this commit does prevent from creating a
configuration with RISC-V 32-bit and headers < 5.4.0, but it will have
BR2_TOOLCHAIN_BUILDROOT_NONE=y, which is catched by
package/Makefile.in, which aborts the build early on pointing out that
the configuration is invalid.
Fixes:
http://autobuild.buildroot.net/results/5ca49b2732f68eccb5276e7112f7f496dcc514ee/
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
In the internal toolchain backend, we have a choice..endchoice block
to allow the user to select the C library, between glibc, uClibc and
musl.
However, there are situations were no C library at all is
supported. In this case, the choice does not appear, and does not
allow to see the Config.in comments that are within the
choice..endchoice block and that may explain why no C library is
available.
For example, on RISC-V 32-bit, the only C library supported is glibc,
and the minimum kernel header version required by glibc on this
architecture is 5.4.0. In a future commit, we are going to add this
dependency on glibc (to fix build issues on configurations that have
headers < 5.4.0). But since glibc is the only supported C library on
RISC-V 32-bit, it means that the choice..endchoice for the C library
contains no entry, preventing from seeing the Config.in comment.
To address this issue, this commit adds a "dummy"
BR2_TOOLCHAIN_BUILDROOT_NONE option that shows up in the
choice..endchoice only when no C library is available. Thanks to this,
the choice..endchoice is never empty, and the Config.in comments can
be seen.
If the user keeps BR2_TOOLCHAIN_BUILDROOT_NONE selected, then the
build will anyway abort early because package/Makefile.in has a check
to verify that a C library is selected, and aborts the build if not.
Some could say that the problem should be resolved by instead
preventing the selection of headers < 5.4.0 on RISC-V 32-bit, but that
is difficult to do as the user can choose a custom header version, or
simply specific that (s)he wants to use the headers of the kernel
being built. In those situations, it's difficult to prevent selecting
headers < 5.4.0.
Prevent random configurations from triggering a build failure in our
autobuilders, by excluding that symbol from accepted configuration.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
[yann.morin.1998@free.fr: update genrandconfig]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Startig with glibc 2.34, the gconv modules description has been split in
two:
- a common definition in the old location, /usr/lib/gconv/gconv-modules
- specific definitions in a subdirectory, /usr/lib/gconv/gconv-modules.d/
This is done so as to simplify the handling of glibc gconv modules, and
eventually to segregate those outside of glibc, and so that third-parties
may also provide their own gconv converters and their definitions.
And starting with that same glibc version, most of the gconv modules
definitions are moved to an extra configuration file in that
sub-directory.
It is thus no longer possible to use special code pages, like cp850,
which are very useful to access FAT-formatted devices.
Add support for this new gconv layout, while keeping support for older
glibc versions. Note that the modules themselves are not moved or
renamed, just the definition files have changed.
Instead of passing the one old gonv modules definitions file on stdin,
we pass the base directory to that file, and move into the script the
responsibility to find all the gconv definition files.
Signed-off-by: Yann E. MORIN <yann.morin@orange.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Romain Naour <romain.naour@gmail.com>
Cc: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Cc: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
As reported to Linaro bug tracker [1] the Arm GNU Toolchain generated
since 2022.02 doesn't work on all x86_64 host.
It still not fixed with 11.3.Rel1 release (2022.08).
Fixes#15006
[1] https://bugs.linaro.org/show_bug.cgi?id=5825#c19
This reverts commit 34cf3a15c9.
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
As reported to Linaro bug tracker [1] the Arm GNU Toolchain generated
since 2022.02 doesn't work on all x86_64 host.
It still not fixed with 11.3.Rel1 release (2022.08).
Fixes#15006
[1] https://bugs.linaro.org/show_bug.cgi?id=5825#c19
This reverts commit f4a78565db.
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
As reported to Linaro bug tracker [1] the Arm GNU Toolchain generated
since 2022.02 doesn't work on all x86_64 host.
It still not fixed with 11.3.Rel1 release (2022.08).
Fixes#15006
[1] https://bugs.linaro.org/show_bug.cgi?id=5825#c19
This reverts commit 22d10e294c.
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Commit [1] enabled glibc on or1k since it's now supported but it
requires a toolchain with linux-headers >= 5.4.
From [2]:
"Here we define the minumum linux kernel version at 5.4.0, as that is the
long term support version where 32-bit architectures start to support
64-bit time API's. The OpenRISC kernel had some bugs up until version 5.8
which caused issues with glibc fork/clone, they have been backported to
5.4 but not previous versions."
Fixes:
checking installed Linux kernel header files... 3.2.0 or later
checking for kernel header at least 5.4.0... too old!
configure: error: *** The available kernel headers are older than the requested
https://gitlab.com/buildroot.org/toolchains-builder/-/jobs/2875256686
[1] 68d0aede59
[2] https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=0c3c62ca7d9ff3bdacdd13e636bc858101e3e288
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>
This is perhaps the most controversial change for Buildroot that can
be written in a two-liner.
Historically, we have used uClibc as our default C library, as
Buildroot was created initially as a test-bed for uClibc, and also
because uClibc made a lot of sense for embedded Linux systems, due to
its smaller size and fine-grained configurability.
Since then, the landscape of embedded Linux systems has changed. Even
though Buildroot happily supports really low-end devices, the vast
majority of Buildroot users are quite certainly running the resulting
system on a reasonably powerful platform, with significant amount of
RAM and storage. In this context, the benefits of uClibc are no longer
that much relevant, and glibc causes less "troubles". Therefore, this
patch proposes to use glibc as our default C library when using the
internal toolchain backend instead of uClibc.
Of course, we will keep the support for uClibc, which remains an
important C library choice, for space-constrained systems, or simply
for architectures that are not supported by glibc.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Acked-by: Yann E. MORIN <yann.morin.1998@free.fr>
Acked-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
