* [Buildroot] [autobuild.buildroot.net] Your build results for 2016-09-29
[not found] <20160930063021.782B5103059@stock.ovh.net>
@ 2016-10-01 17:32 ` Yann E. MORIN
0 siblings, 0 replies; only message in thread
From: Yann E. MORIN @ 2016-10-01 17:32 UTC (permalink / raw)
To: buildroot
All,
On 2016-09-30 08:30 +0200, Thomas Petazzoni spake thusly:
> Build failures related to your packages:
> arm | snappy-1ff9be9b8fafc8528ca9... | http://autobuild.buildroot.net/results/f0abe301816e39eb4ae26d3e8cd42d90901d5ac5
This one is simple to explain: the libstdc++ from that toolchain uses
pthread symbols, like pthread_mutex_lock, pthread_once and so on...
Since this build is a static build, dependent libraries are not pulled
in automagically by way of the NEEDED flag, since they do not exist in
static libs.
Fixing the build is trivial: we could add -pthread to both of CFLAGS and
LIBS when calling configure. I have a patch that does exactly that.
However, looking more deeper into the output of the build, one can see
that snappy's buildsystem is usung libtool. It generates a libsnappy.la
file that seem to contain the require -pthread info:
16 # Linker flags that cannot go in dependency_libs.
17 inherited_linker_flags=' -pthread'
18
19 # Libraries that this one depends upon.
20 dependency_libs=' /home/ymorin/dev/buildroot/O/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-uclinux-uclibcgnueabi/5.4.0/../../../../arm-buildroot-uclinux-uclibcgnueabi/lib/libstdc++.la -pthread'
But this is not picked up when linking the unittest program.
We could well disable the build of the unittest program, but there is
something that seems fishy nonetheless: why doesn't libtool grab it from
libsnappy.la in the first place?
Anyway, I'll post the patch for review...
Regards,
Yann E. MORIN.
--
.-----------------.--------------------.------------------.--------------------.
| Yann E. MORIN | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software Designer | \ / CAMPAIGN | ___ |
| +33 223 225 172 `------------.-------: X AGAINST | \e/ There is no |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL | v conspiracy. |
'------------------------------^-------^------------------^--------------------'
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2016-10-01 17:32 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
[not found] <20160930063021.782B5103059@stock.ovh.net>
2016-10-01 17:32 ` [Buildroot] [autobuild.buildroot.net] Your build results for 2016-09-29 Yann E. MORIN
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.