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Re: [ping] Re: [patch] PR40134, use a linker script on arm-linux to link with -lgcc_s -lgcc
- From: Andrew Haley <aph at redhat dot com>
- To: Matthias Klose <doko at ubuntu dot com>
- Cc: Jakub Jelinek <jakub at redhat dot com>, Alexandre Oliva <aoliva at redhat dot com>, Nathan Froyd <froydnj at codesourcery dot com>, GCC Patches <gcc-patches at gcc dot gnu dot org>, Paolo Carlini <paolo dot carlini at oracle dot com>, GCJ-patches <java-patches at gcc dot gnu dot org>, Richard Earnshaw <Richard dot Earnshaw at arm dot com>
- Date: Thu, 24 Sep 2009 09:42:06 +0100
- Subject: Re: [ping] Re: [patch] PR40134, use a linker script on arm-linux to link with -lgcc_s -lgcc
- References: <4A530F5C.4040500@ubuntu.com> <20090707091425.GB4462@tyan-ft48-01.lab.bos.redhat.com> <4A5B32BB.5010308@ubuntu.com> <20090909112436.GV14664@tyan-ft48-01.lab.bos.redhat.com> <4AAA8510.8060906@ubuntu.com> <4AB8C07D.3010807@ubuntu.com> <4AB8F3C2.60909@redhat.com> <4ABB2CB3.8090800@ubuntu.com>
Matthias Klose wrote:
> On 22.09.2009 17:56, Andrew Haley wrote:
>> Matthias Klose wrote:
>>> On 11.09.2009 19:12, Matthias Klose wrote:
>>
>>>> Applied and checked the attach patch on top of your patch, ran the
>>>> testsuite without regressions (applied the patch for pr40133 from Paolo
>>>> for the same test run as well).
>>>>
>>>> Matthias
>>>
>>> updated the patch to only for arm*-*-linux-*eabi; test results at
>>> http://gcc.gnu.org/ml/gcc-testresults/2009-09/msg02000.html
>>>
>>> Ok for the trunk?
>>
>> I'm not at all happy that backtraces are failing now on Java, but I
>> guess your
>> patch didn't cause that. OK by me.
>
> Without this patch, the build of libjava fails on arm*-*-linux-*eabi:
>
> /usr/bin/ld: .libs/jv-convert: hidden symbol `__sync_synchronize' in
> /root/gcc/newgccsnapshot/gcc-snapshot-20090919/build/./gcc/libgcc.a(linux-atomic.o)
> is referenced by DSO
> /usr/bin/ld: final link failed: Nonrepresentable section on output
> collect2: ld returned 1 exit status
> make[5]: *** [jv-convert] Error 1
>
> Full buildlog at http://people.debian.org/~doko/tmp/snapshot.log.bz2
>
> The reason for this is not linking the shared libgcj with -lgcc.
I find this extremely surprising. LDFLAGS are explicitly set to do
that when building libgcc. I did this myself, and I'm pretty sure that
it works.
svn diff -r150701:150702
> Am I allowed to check in this patch to fix the build failure, or do I
> have to wait for an approval of an ARM maintainer?
I think you need an ARM maintainer, but I first want to know why your
build isn't linking with libgcc.
Andrew.