The gdbinit supplied by Buildroot does two things:
A. specify the sysroot where gdb can find shared libraries
B. mark the sysroot as a 'safe path' for its auto-load feature, to make sure
that pretty printers for libstdc++.so are added automatically (see commit
6fb3216a80)
When debugging a core file, and the gdbinit file is specified via '-x'
rather than '-ix', then the order of these settings matters: If you first
set the sysroot, then gdb will immediately start finding the shared
libraries it needs for the core file, detect libstdc++ and its associated
libstdc++-gdb.py file, then give a big warning about safe paths:
warning: File ".../i686-buildroot-linux-gnu/sysroot/lib/libstdc++.so.6.0.24-gdb.py"
auto-loading has been declined by your `auto-load safe-path' set
to "$debugdir:$datadir/auto-load".
To enable execution of this file add
add-auto-load-safe-path .../i686-buildroot-linux-gnu/sysroot/lib/libstdc++.so.6.0.24-gdb.py
line to your configuration file "/home/me/.gdbinit".
To completely disable this security protection add
set auto-load safe-path /
line to your configuration file "/home/me/.gdbinit".
For more information about this security protection see the
"Auto-loading safe path" section in the GDB manual. E.g., run from the shell:
info "(gdb)Auto-loading safe path"
and the pretty printing code is not loaded. This is because the second
line from the gdbinit file was not yet parsed at this point.
By changing the order (first configuring the safe path, then setting the
sysroot), this issue does not appear and everything is as expected.
Note that when '-ix' were used instead of '-x' to pass the gdbinit file to
gdb, then the order would not matter, because the entire gdbinit file would
be parsed before considering the core file.
However, even though the Buildroot manual now suggests '-ix', users may not
have noticed this change and continue to use '-x'.
Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Update to gcc 10.3, gdb 10.2, binutils 2.36.1, glibc 2.33.
Remove BR2_TOOLCHAIN_HAS_NATIVE_RPC since the support for obsolete
RPC was finally dropped in glibc in 2.32 (2020-08-04).
See "Release Note":
https://developer.arm.com/open-source/gnu-toolchain/gnu-a/downloads#
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Update to gcc 10.3, gdb 10.2, binutils 2.36.1, glibc 2.33.
Remove BR2_TOOLCHAIN_HAS_NATIVE_RPC since the support for obsolete
RPC was finally dropped in glibc in 2.32 (2020-08-04).
See "Release Note":
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: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Update to gcc 10.3, gdb 10.2, binutils 2.36.1, glibc 2.33.
Remove BR2_TOOLCHAIN_HAS_NATIVE_RPC since the support for obsolete
RPC was finally dropped in glibc in 2.32 (2020-08-04).
See "Release Note":
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: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Reorder gcc bugs by number
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Some 3rd party vendor toolchains have multiple files which match
these glob patterns. In this case, the shell script failed.
Switching to use find and xargs solves the issue.
Signed-off-by: Jonah Petri <jonah@petri.us>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Some 3rd party vendor toolchains have multiple files which match
these glob patterns. In this case, the shell script failed.
Switching to use find and xargs solves the issue.
Signed-off-by: Jonah Petri <jonah@petri.us>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Gcc bug 99140 has been fixed on gcc 8.x but reappeared on gcc 9.x while
it's been fixed on gcc 10.x+. So let's update
BR2_TOOLCHAIN_HAS_GCC_BUG_99140 accordingly.
Fixes:
http://autobuild.buildroot.net/results/c55/c55f50a8d657695f0d5492c32efa666254cd7f99/
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This bug has been fixed upstream and backported to buildroot binutils
package. So let's remove it from toolchain/Config.in and from packages
that are affected by it:
- libgeos
- postgis
- protobuf
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Reviewed-by: Maxim Kochetkov <fido_max@inbox.ru>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
gdb can automatically load certain files as described in [1]. Such files
could install pretty-printers for complex data structures.
libstdcxx (C++ standard library) provided by gcc, is one example of a
library for which such auto-load file is available. But there are other
examples too, like libglib2.
However, gdb will only auto-load files if the file is located in one of the
locations treated as 'safe'. The Buildroot sysroot is not by default in that
list.
Provide a better debugging experience by adding the sysroot to the 'safe'
list, via the gdbinit file prepared by Buildroot.
[1] https://sourceware.org/gdb/onlinedocs/gdb/objfile_002dgdbdotext-file.html
Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
gcc installs a libstdcxx-...so-gdb.py file that gdb will load automatically
when it loads libstdcxx.so, via the mechanism described at [1].
However, the auto-load file installed by gcc contains hardcoded paths
referring to the location where the (external) toolchain was built, which
are normally not available.
Fix up the paths in the load file so that the pretty printers can be loaded
automatically.
Note that gdb will only auto-load the file if its location is marked as
'safe'. A subsequent commit will take care of that.
Technically, there could be more than one load file, e.g. in lib and
usr/lib, so fix them all. This was for example observed in
BR2_TOOLCHAIN_EXTERNAL_ARM_AARCH64.
In a very specific case with a local custom toolchain, there were actually
two 'python' directories, which would break the sed command, so arbitrarily
limit to the first one encountered.
[1] https://sourceware.org/gdb/onlinedocs/gdb/objfile_002dgdbdotext-file.html
Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This patch allows to use an external toolchain based on gcc 11.
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
In order to add gcc 11 support for internal and external toolchain in
follow-up commits, introduce BR2_TOOLCHAIN_GCC_AT_LEAST_11 symbol.
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
On Nios II binutils it still present ld bug 27597 leading to a package
libgeos to fail building:
c053b9e191/
The bug was already reported and it's been updated:
https://sourceware.org/bugzilla/show_bug.cgi?id=27597
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
The BR2_TOOLCHAIN_HAS_BINUTILS_BUG_19615 and
BR2_TOOLCHAIN_HAS_BINUTILS_BUG_20006 options were last selected by the
BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_AMD64 toolchain, but this
toolchain has been removed as part of commit
d87e114a8f in August 2020.
It's time to get rid of those two options that are never enabled.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
The OpenRISC binutils is affected by a linker bug (binutils bug 21464)
for which no workaround exists. This causes build breakage in a number
of packages, so this commit introduces a
BR2_TOOLCHAIN_HAS_BINUTILS_BUG_21464 option to identify this bug. As
all binutils versions are affected, this option is true whenever the
configuration targets OpenRISC.
The bug was already reported and it's been recently updated:
https://sourceware.org/bugzilla/show_bug.cgi?id=21464
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Since gcc version 10.x bug 60620 doesn't show anymore, so let's make it
enabled up to versino 10.x excluded.
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
The Bootlin PowerPC 440 FP toolchain was rebuilt in version 2020.08-2,
which is rebased on Buildroot 2020.08.3 as that includes a fix for
SecurePLT support.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Reviewed-by: Matthew Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Fixes build error
output/host/opt/ext-toolchain/bin/../lib/gcc/aarch64-amd-linux-gnu/4.9.1/../../../../aarch64-amd-linux-gnu/bin/ld:
cannot find -latomic
using this defconfig
BR2_aarch64=y
BR2_TOOLCHAIN_EXTERNAL=y
BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64=y
BR2_PACKAGE_OPENSSL=y
libopenssl is only used here as an example: all packages adding -latomic
if BR2_TOOLCHAIN_HAS_LIBATOMIC=y are broken, like dav1d, ffmpeg, gnutls,
kodi and vlc.
Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Support for obsolete RPC was dropped in glibc 2.14 (2011-05-31), then
reinstated and marked obsolete in glibc 2.16 (2012-06-30), and finally
dropped for good in 2.32 (2020-08-04), which we are about to start
using.
In preparation for that, drop the usage of obsolete RPC support in
glibc.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
[yann.morin.1998@free.fr: add a bit of history]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Starting with glibc-2.32, the RPC code has been removed from
glibc [0], and it is not possible anymore to enable it, even
with the --enable-obsolete-rpc configure option (which was
also removed).
riscv32 and arc both use a glibc 2.32+ so do not forcefully
enable native RPC for them.
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
The RISC-V 32-bit toolchain is using a recent glibc version that no
longer has RPC support. Thanks to the change in
gen-bootlin-toolchains, this is now properly detected.
Fixes:
https://gitlab.com/buildroot.org/buildroot/-/jobs/849510531
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
While testing Buildroot on a Cortex-A5 that doesn't provide NEON, we
found out that a system generated with the ARM toolchain from Arm
didn't boot. It turns out that this ARM toolchain is built with:
--with-arch=armv7-a --with-fpu=neon --with-float=hard --with-mode=thumb
So, it uses NEON as its FPU, which means it can only work on CPU cores
that have NEON support. This commit adds the appropriate dependency to
the toolchain-external-arm-arm package, and adjusts the Config.in help
text accordingly.
While at it, it also drops the part of the Config.in help text that
says the code is tuned for Cortex-A9, as it is not the case: it was
the case for the Linaro toolchain (built with --with-tune=cortex-a9),
but not for the ARM toolchain, for which no specific --with-tune is
passed.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
The commit [1] enabled riscv32 and riscv64 for uClibc-ng
internal toolchain backend but only riscv64 is curently
supported by uClibc-ng.
The initial patch [2] from Mark Corbin is only about riscv64.
Remove riscv32 from uClibc-ng supported architecture list.
Fixes:
https://gitlab.com/buildroot.org/buildroot/-/jobs/830981656
[1] 209a082478
[2] bd9810e176
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Bootlin toolchains in version 2020.08-1 have just been released, so
let's update the toolchain-external-bootlin package to those new
toolchains.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
uclibc-ng supports the RISC-V architecture since version 1.0.31, so
let's allow selecting this C library when RISC-V is used.
There was a previous attempt in commit
bd9810e176, which was reverted in
e7d631c0df, due to uClibc-ng not
implementing the __riscv_flush_icache() which is needed by
gcc. However this function has been implemented in upstream uClibc-ng
as of 1.0.35, so we can now safely re-enable uClibc-ng on RISC-V.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
