GCC uses thunk functions to adjust the 'this' pointer when calling C++
member functions in classes derived with multiple inheritance.
Generation of thunk functions requires support from the compiler back
end. In the absence of that support target-independent code in the C++
front end is used to generate thunk functions, but it does not support
vararg functions.
Support for this feature is currently missing in or1k and xtensa
toolchains.
Add hidden option BR2_TOOLCHAIN_SUPPORTS_VARIADIC_MI_THUNK that
indicates presence of this feature in the toolchain. Add dependency to
packages that require this feature to be built.
Fixes:
http://autobuild.buildroot.net/results/c9e660c764edbd7cf0ae54ab0f0f412464721446/http://autobuild.buildroot.net/results/9a3bf4b411c418ea78d59e35d23ba865dd453890/
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
It is set when the platform exposes the struct ucontext_t.
This avoids duplication of logic inside each package requiring
the use of that type.
Signed-off-by: Patrick Havelange <patrick.havelange@essensium.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
>From [1]:
* All GCC 8.2 features. For details on GCC 8 release series.
* Linaro specific pre-processor macros to ensure that this is a
continuation from the Linaro releases.
* Spectre v1 mitigation backport from upstream FSF trunk include the
revisions. This is an initial backport of those mitigations in
the GNU toolchain and should be regarded as support for prototyping
and early access only. Moreover, while the backports include support
for the other architectures, they are included for completeness and
all issues regarding these patches must be taken up upstream in the
https://gcc.gnu.org/bugzilla by reproducing the same with upstream
FSF trunk.
Arm is interested in feedback regarding these workarounds for
Spectre v1.
A description of the mitigation has been published on LWN.net.
See "Release Note":
[1] https://developer.arm.com/open-source/gnu-toolchain/gnu-a/downloads#
Tested with qemu_aarch64_virt_defconfig.
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
>From [1]:
* All GCC 8.2 features. For details on GCC 8 release series.
* Linaro specific pre-processor macros to ensure that this is a
continuation from the Linaro releases.
* Spectre v1 mitigation backport from upstream FSF trunk include the
revisions. This is an initial backport of those mitigations in
the GNU toolchain and should be regarded as support for prototyping
and early access only. Moreover, while the backports include support
for the other architectures, they are included for completeness and
all issues regarding these patches must be taken up upstream in the
https://gcc.gnu.org/bugzilla by reproducing the same with upstream
FSF trunk.
Arm is interested in feedback regarding these workarounds for
Spectre v1.
A description of the mitigation has been published on LWN.net.
See "Release Note":
[1] https://developer.arm.com/open-source/gnu-toolchain/gnu-a/downloads#
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
>From [1]:
* All GCC 8.2 features. For details on GCC 8 release series.
* Linaro specific pre-processor macros to ensure that this is a
continuation from the Linaro releases.
* Spectre v1 mitigation backport from upstream FSF trunk include the
revisions. This is an initial backport of those mitigations in
the GNU toolchain and should be regarded as support for prototyping
and early access only. Moreover, while the backports include support
for the other architectures, they are included for completeness and
all issues regarding these patches must be taken up upstream in the
https://gcc.gnu.org/bugzilla by reproducing the same with upstream
FSF trunk.
Arm is interested in feedback regarding these workarounds for
Spectre v1.
A description of the mitigation has been published on LWN.net.
See "Release Note":
[1] https://developer.arm.com/open-source/gnu-toolchain/gnu-a/downloads#
Tested with qemu_arm_vexpress_defconfig.
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
The 2016.05-06 toolchain we've had support for is pretty outdated at
this point, so update to the latest 2018.09-02 version.
Of note besides the typical component version bumps:
- The toolchains are now provided by MIPS Tech LLC after its departure
from Imagination Technologies.
- The download site changed as a result of that.
- The toolchains are now built targeting CentOS 6 rather than CentOS 5.
Signed-off-by: Paul Burton <paul.burton@mips.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
The 2016.05-06 toolchain we've had support for is pretty outdated at
this point, so update to the latest 2018.09-02 version.
Of note besides the typical component version bumps:
- The toolchains are now provided by MIPS Tech LLC after its departure
from Imagination Technologies.
- The download site changed as a result of that.
- The toolchains are now built targeting CentOS 6 rather than CentOS 5.
Signed-off-by: Paul Burton <paul.burton@mips.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Lets update prebuilt ARC toolchain to the most recent arc-2018.09.
Signed-off-by: Evgeniy Didin <Evgeniy.Didin@synopsys.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: arc-buildroot@synopsys.com
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Initially we had a port only for ARCv2 cores but then with a simple
change ARCompact cores got supported as well.
So we generalize from BR2_archs to BR2_arcle as we haven't tried to
get glibc working on big-endian ARCs yet.
Also we never bothered to check avaialbility of atomic instructions in
the core but in case of Glibc for ARC this is really a must, so we add
this check here.
Note in case of uClibc we may have system w/o HW atomics but:
1. Only single-core systems are allowed
2. Atomic instructions are emulated via arc_usr_cmpxchg syscall
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
nsswitch.conf is processed both by the toolchain, nss-mdns and
nss-myhostname without any guaranteed ordering in between.
The toolchain package ensures that nsswitch.conf is available, and the two
nss-* packages tweaks the content, so the toolchain processing should run
before the nss-* ones. Toolchain is a dependency of all the packages, so
ensure this is done by moving the toolchain handling to a
post-target-install hook.
Also move the variable to toolchain/toolchain/toolchain.mk where the virtual
toolchain package is defined for clarity.
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
If a custom external toolchain is used, we can't enable the fortran
support. Add a new option for that.
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This is the same toolchain that was previously distributed by Linaro. [1]
Switch default toolchain as this toolchain supersed the Linaro AArch64-BE toolchain.
Only x86_64 host are supported, so keep Linaro toolchain for x86 host.
[1] https://developer.arm.com/open-source/gnu-toolchain/gnu-a/downloads
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This is the same toolchain that was previously distributed by Linaro. [1]
Switch default toolchain as this toolchain supersed the Linaro AArch64 toolchain.
Only x86_64 host are supported, so keep Linaro toolchain for x86 host.
Tested with qemu_aarch64_virt_defconfig.
[1] https://developer.arm.com/open-source/gnu-toolchain/gnu-a/downloads
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This is the same toolchain that was previously distributed by Linaro. [1]
Switch default toolchain as this toolchain supersed the Linaro ARM toolchain.
Only x86_64 host are supported, so keep Linaro toolchain for x86 host.
Tested with qemu_arm_vexpress_defconfig.
[1] https://developer.arm.com/open-source/gnu-toolchain/gnu-a/downloads
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Migrate the stack protection flag management into the wrapper.
Signed-off-by: Matthew Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
The RELRO/PIE flags are currently passed via CFLAGS/LDFLAGS and this patch
proposes moving them to the toolchain wrapper.
(1) The flags should _always_ be passed, without leaving the possibility
for any package to ignore them. I.e, when BR2_RELRO_FULL=y is used
in a build, all executables should be built PIE. Passing those
options through the wrapper ensures they are used during the build
of all packages.
(2) Some options are incompatible with -fPIE. For example, when
building object files for a shared libraries, -fPIC is used, and
-fPIE shouldn't be used in combination with -fPIE. Similarly, -r
or -static are directly incompatible as they are different link
time behaviors then the intent of PIE. Passing those options
through the wrapper allows to add some "smart" logic to only pass
-fPIE/-pie when relevant.
(3) Some toolchain, kernel and bootloader packages may want to
explicitly disable PIE in a build where the rest of the userspace
has intentionally enabled it. The wrapper provides an option
to key on the -fno-pie/-no-pie and bypass the appending of RELRO
flags.
The current Kernel and U-boot source trees include this option.
8438ee76b06ace36e19a
If using PIE with a older Kernel and/or U-boot version, a backport of these
changes might be required. However this patchset also uses the
__KERNEL__ and __UBOOT__ defines as a way to disable PIE.
NOTE: The current implementation via CFLAGS/LDFLAGS has caused some
build time failures as the conditional logic doesn't yet exist in
Buildroot:
https://bugs.busybox.net/show_bug.cgi?id=11206https://bugs.busybox.net/show_bug.cgi?id=11321
Good summary of the most common build failures related to
enabling pie: https://wiki.ubuntu.com/SecurityTeam/PIE
[Peter: minor cleanups]
Signed-off-by: Matthew Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
commit e0d14fb21b (toolchain-external: drop no longer needed
CC_TARGET_<foo>_ variables) dropped the CC_TARGET_* variables, but missed
one. Fix that.
Reported-by: Mark Corbin <mark.corbin@embecosm.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Since the introduction of the GCC_TARGET_<foo> variables in
arch/arch.mk in commit bd0640a213
("arch: allow GCC target options to be optionally overwritten") and
the removal of the BR2_GCC_TARGET_CPU_REVISION, the CC_TARGET_<foo>_
variables in pkg-toolchain-external.mk map 1:1 with the corresponding
GCC_TARGET_<foo> variables.
So let's drop the CC_TARGET_<foo>_ variables, and use directly the
GCC_TARGET_<foo> ones.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
In commit 325bb37942, support for the
Blackfin architecture was removed. This was our only use of
BR2_GCC_TARGET_CPU_REVISION, and since this config option somewhat
complicates the calculation of the --with-cpu/-mcpu option values,
let's drop it.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This enables a riscv64 system to be built with a Buildroot generated
toolchain (gcc >= 7.x, binutils >= 2.30, glibc only).
This configuration has been used to successfully build a qemu-bootable
riscv-linux-4.15 kernel (https://github.com/riscv/riscv-linux.git).
Signed-off-by: Mark Corbin <mark.corbin@embecosm.com>
[Thomas:
- simplify arch.mk.riscv by directly setting GCC_TARGET_ARCH
- simplify glibc.mk changes by using GLIBC_CONF_ENV.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
The BR2_GCC_TARGET_* configuration variables are copied to
corresponding GCC_TARGET_* variables which may then be optionally
modified or overwritten by architecture specific makefiles.
All makefiles must use the new GCC_TARGET_* variables instead
of the BR2_GCC_TARGET_* versions.
Signed-off-by: Mark Corbin <mark.corbin@embecosm.com>
[Thomas: simplify include of arch/arch.mk]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
The check_musl function currently builds a program and verifies if the
program interpreter starts with /lib/ld-musl. While this works fine
for dynamically linked programs, this obviously doesn't work for a
purely static musl toolchain such as [1].
There is no easy way to identify a toolchain as using the musl C
library. For glibc, dynamic linking is always supported, so we look at
the dynamic linker name. For uClibc, there is a distinctive
uClibc_config.h header file. There is no such distinctive feature in
musl.
We end up resorting to looking for the string MUSL_LOCPATH, which is
used by musl locale_map.c source file. This string has been present in
musl since 2014. It certainly isn't a very stable or convincing
solution to identify the C library as being musl, but it's the best we
could find.
Note that we are sure there is a libc.a file, because the
check_unusable_toolchain function checks that there is a such a file.
[1] http://autobuild.buildroot.net/toolchains/tarballs/br-arm-musl-static-2018.05.tar.bz2
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Add BR2_TOOLCHAIN_SUPPORTS_ALWAYS_LOCKFREE_ATOMIC_INTS variable and
use it in BR2_TOOLCHAIN_HAS_GCC_BUG_64735.
This new variable will be used to select boost atomic when lock-free
atomic ints are not available
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit adds a new package for the Linaro external toolchain for
the AArch64 Big Endian architecture.
https://releases.linaro.org/components/toolchain/binaries/7.3-2018.05
Signed-off-by: Ofer Heifetz <oferh@marvell.com>
Reviewed-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Lets update prebuilt ARC toolchain to the most recent arc-2018.03.
Signed-off-by: Evgeniy Didin <didin@synopsys.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: arc-buildroot@synopsys.com
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Re-add BR2_TOOLCHAIN_HAS_SSP since the toolchain support SSP.
Tested with qemu_nios2_10m50_defconfig and Qemu 2.10.1-3.fc27 release.
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This patch allows to use an external toolchain based on gcc 8.
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
In order to add gcc 8 support for internal and external toolchain in
follow-up commits, introduce BR2_TOOLCHAIN_GCC_AT_LEAST_8 symbol.
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Commit b9882925a4 (toolchain: introduce
BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS) added this symbol to identify
Blackfin toolchains without shadow passwords support. We no longer
support Blackfin.
Cc: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
The BR2_TOOLCHAIN_UCLIBC symbol doesn't exist, it was meant to be
BR2_TOOLCHAIN_BUILDROOT_UCLIBC.
Signed-off-by: Petr Vorel <petr.vorel@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
There are cases where a downloaded toolchain doesn't have its binaries
placed directly in a "bin" subfolder (where BuildRoot currently looks
for them).
A common example is the official Raspberry Pi Toolchain
(https://github.com/raspberrypi/tools), which has its binaries in
"arm-bcm2708/arm-linux-gnueabihf/bin".
This commit introduces BR2_TOOLCHAIN_EXTERNAL_REL_BIN_PATH that defaults
to "bin" and can be changed as needed.
Signed-off-by: Calin Crisan <ccrisan@gmail.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
[Thomas: rework a bit how TOOLCHAIN_EXTERNAL_REL_BIN_PATH is defined.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Since gcc 4.6, GCC deprecated -mfused-madd, -ffp-contract=off should
be used for the Xburst workaround.
Tested with the MIPS Sourcery 2011.03 toolchain (based on gcc 4.5),
the toolchain wrapper uses -mno-fused-madd, as expected:
$ BR2_DEBUG_WRAPPER=2 ./output/host/bin/mips-linux-gnu-gcc -o toto toto.c
Toolchain wrapper executing:
'/home/thomas/toolchains/mips-2011.03/bin/mips-linux-gnu-gcc'
'--sysroot'
'/home/thomas/projets/buildroot/output/host/mipsel-buildroot-linux-gnu/sysroot'
'-mabi=32'
'-msoft-float'
'-mno-fused-madd'
'-EL'
'-march=mips32r2'
'-o'
'toto'
'toto.c'
And with the MIPS Sourcery 2012.09 toolchain (based on gcc 4.7), the
toolchain wrapper uses -ffp-contract=off, as expected:
$ BR2_DEBUG_WRAPPER=2 ./output/host/bin/mips-linux-gnu-gcc -o toto toto.c
Toolchain wrapper executing:
'/home/thomas/toolchains/mips-2012.09/bin/mips-linux-gnu-gcc'
'--sysroot'
'/home/thomas/projets/buildroot/output/host/mipsel-buildroot-linux-gnu/sysroot'
'-mabi=32'
'-msoft-float'
'-ffp-contract=off'
'-EL'
'-march=mips32r2'
'-o'
'toto'
'toto.c'
Fixes the ci20_defconfig build:
https://gitlab.com/buildroot.org/buildroot/-/jobs/60303132
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
[Thomas: rework to continue supporting pre-gcc-4.6 toolchains, extend
the commit log after doing more testing.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Reviewed-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
