a02927b94a
pause() is defined in glibc since the very early times; it appears in
upstream commit 28f540f45bba (initial import) in 1995 [0].
Bluez has been defining a function named pause() for ages too, since
comit caab74c97542 (media: Implement new callbacks for pass-through
operations) in 2013 [1]
With the recent bump to glibc 2.34.xxx, the build now fails because the
two pause() clash:
profiles/audio/media.c:1284:13: error: conflicting types for 'pause'
1284 | static bool pause(void *user_data)
| ^~~~~
In file included from /tmp/instance-0/output-1/per-package/bluez5_utils/host/s390x-buildroot-linux-gnu/sysroot/usr/include/bits/sigstksz.h:24,
from /tmp/instance-0/output-1/per-package/bluez5_utils/host/s390x-buildroot-linux-gnu/sysroot/usr/include/signal.h:328,
from /tmp/instance-0/output-1/per-package/bluez5_utils/host/bin/../s390x-buildroot-linux-gnu/sysroot/usr/include/glib-2.0/glib/gbacktrace.h:36,
from /tmp/instance-0/output-1/per-package/bluez5_utils/host/bin/../s390x-buildroot-linux-gnu/sysroot/usr/include/glib-2.0/glib.h:34,
from profiles/audio/media.c:21:
/tmp/instance-0/output-1/per-package/bluez5_utils/host/s390x-buildroot-linux-gnu/sysroot/usr/include/unistd.h:489:12: note: previous declaration of 'pause' was here
489 | extern int pause (void);
| ^~~~~
The culprit is indeed glibc 2.34, as can be seen in this result matrix:
\ bluez5_utils
glibc \ 5.60 | 5.61
-------\-------+--------
2.33 | OK | OK
-------+-------+--------
2.34 | KO | KO
Even though we first bumped to glibc 2.34, then to blues5_utils 5.61,
we did not notice build issues with bluez5_utils 5.60 because the two
bumps were too close to each other for the failure to trigger in the
autobuilders.
The underlying reason that pause() is now causing issues with glibc 2.34
is not obvious: glibc is a big beast, and finding such issues is not
easy. However, we can see that the pause() provided by NPTL has been
dropped in favour of the generic one, so maybe this is causing symbol
visibility or weakness to change or something...
We fix that by renaming the local pause() in bluez5_utils with a
namespace-prefix, like some other functions there already have.
Fixes:
- http://autobuild.buildroot.org/results/c4f/c4fbface34be8815838fd7201621d7a8fddd32c5/
- http://autobuild.buildroot.org/results/62b/62b88740f19fbe4a1ad7959dc141d539eb88c1f8/
[0] https://sourceware.org/git/?p=glibc.git;a=commit;h=28f540f45bbacd939bfd07f213bcad2bf730b1bf
[1]
|
||
|---|---|---|
| arch | ||
| board | ||
| boot | ||
| configs | ||
| docs | ||
| fs | ||
| linux | ||
| package | ||
| support | ||
| system | ||
| toolchain | ||
| utils | ||
| .defconfig | ||
| .flake8 | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| CHANGES | ||
| Config.in | ||
| Config.in.legacy | ||
| COPYING | ||
| DEVELOPERS | ||
| Makefile | ||
| Makefile.legacy | ||
| README | ||
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches