[Buildroot] [PATCH 1/1] protobuf: apply patch to compile for PowerPC

[Carlos Santos <casantos@datacom.ind.br>]

> From: "Thomas Petazzoni" <thomas.petazzoni@free-electrons.com>
> To: "Carlos Santos" <casantos@datacom.ind.br>
> Cc: buildroot at buildroot.org
> Sent: Wednesday, February 10, 2016 2:44:25 PM
> Subject: Re: [Buildroot] [PATCH 1/1] protobuf: apply patch to compile for PowerPC

> Dear Carlos Santos,
> 
> On Wed, 10 Feb 2016 14:32:06 -0200 (BRST), Carlos Santos wrote:
> 
>> The problem is the same you found on mpd (commit
>> 84533029c70a4dffb2cd2e4f05e3903fd1b8fcd9) in branch master. With the patch in
>> configure.ac I get this:
>> 
>> $ owerpc-e500v2-linux-gnuspe-ldd --root target/ target/usr/bin/protoc
>>         libprotobuf.so.9 => /usr/lib/libprotobuf.so.9 (0xdeadbeef)
>>         libatomic.so.1 => /lib/libatomic.so.1 (0xdeadbeef)
>>         libpthread.so.0 => /lib/libpthread.so.0 (0xdeadbeef)
>>         libc.so.6 => /lib/libc.so.6 (0xdeadbeef)
>>         ld.so.1 => /lib/ld.so.1 (0xdeadbeef)
>>         libz.so.1 => /usr/lib/libz.so.1 (0xdeadbeef)
>>         libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xdeadbeef)
>>         libm.so.6 => /lib/libm.so.6 (0xdeadbeef)
>>         libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xdeadbeef)
>>         libprotoc.so.9 => /usr/lib/libprotoc.so.9 (0xdeadbeef)
> 
> Yes, looks good.
> 
>> Without the patch protoc is not linked to libatomic.so.1.
> 
> Indeed.
> 
> And so, what's the problem ?

Henrique just warned me (offline) about the misunderstanding. The "problem" here is that the patch on configure.ac would not be accepted upstream, since their detection of the atomic operations already works. This is not big deal, IMO, so if you are satisfied with the patch then go ahead and apply it.

Carlos Santos (Casantos)
DATACOM, P&D