[dpdk-dev] DPDK compilation on arm is failing in Travis

[Jerin Jacob Kollanukkaran]

> -----Original Message-----
> From: dev <dev-bounces at dpdk.org> On Behalf Of Michael Santana
> Francisco
> Sent: Thursday, June 6, 2019 4:09 AM
> To: Honnappa Nagarahalli <Honnappa.Nagarahalli at arm.com>; Aaron Conole
> <aconole at redhat.com>; thomas at monjalon.net
> Cc: Ruifeng Wang (Arm Technology China) <Ruifeng.Wang at arm.com>; Gavin
> Hu (Arm Technology China) <Gavin.Hu at arm.com>; Dharmik Thakkar
> <Dharmik.Thakkar at arm.com>; jerin.jacob at caviumnetworks.com;
> yskoh at mellanox.com; dev at dpdk.org; bruce.richardson at intel.com; nd
> <nd at arm.com>
> Subject: Re: [dpdk-dev] DPDK compilation on arm is failing in Travis
> 
> On 6/5/19 5:36 PM, Honnappa Nagarahalli wrote:
> >>> Thomas Monjalon <thomas at monjalon.net> writes:
> >>>
> >>>> 05/06/2019 21:40, Aaron Conole:
> >>>>> Thomas Monjalon <thomas at monjalon.net> writes:
> >>>>>
> >>>>>> The compilation of the master branch is failing for aarch64:
> >>>>>> 	https://travis-ci.com/DPDK/dpdk
> >>>>>> The log is so much verbose that I am not able to understand what
> >>>>>> is really wrong.
> >>>>>> Please help to diagnose and fix, thanks.
> >>>>> A discussion about this:
> >>>>>
> >>>>> http://mails.dpdk.org/archives/dev/2019-June/134012.html
> >>>> I see the error now.
> >>>> It is printing the full log after the error, so I missed the error
> >>>> at the top.
> >>>>
> >>>> I've read your comment about a possible error with the patch
> >>>> removing weak functions but neither me nor Bruce were able to
> >>>> reproduce
> >> it.
> >>>> What is the condition to see this compiler warning?
> >>> It is only on ARM, and only when the neon intrinsics are in use.
> >> I am not able to reproduce it from the tip of master.
> >>
> >> I am using:
> >> gcc (Ubuntu 8.3.0-6ubuntu1~18.04) 8.3.0
> >>
> >>  From the log on Travis, looks like the compiler is:
> >> gcc (Ubuntu 5.4.0-6ubuntu1~16.04.11) 5.4.0 20160609
> >>
> >> Is this the issue?
> >>
> >> Why are we seeing the error now?
> > I tested with gcc-5 (Ubuntu/Linaro 5.5.0-12ubuntu1) 5.5.0 20171010, it
> works fine. I cannot get hold of 5.4.0. Not sure if needs to be supported.
> > Are there any issues in upgrading to 7 or 8?
> I have tested it on my ubuntu 16.04 vm on commit
> 8cb511bb94ad92a76990f175cac76bb13d51daba (head of master seems to be
> failing for other reasons on my vm).
> I tested the following gcc versions:
> 
> gcc 5.5.0 "cc (Ubuntu 5.5.0-12ubuntu1~16.04) 5.5.0 20171010"
> gcc 7.4.0 "cc (Ubuntu 7.4.0-1ubuntu1~16.04~ppa1) 7.4.0"
> gcc 8.1.0 "cc (Ubuntu 8.1.0-5ubuntu1~16.04) 8.1.0"
> 

Though I am not able to reproduce the issue.
Could you the following patch fixing the issue?

http://patches.dpdk.org/patch/54501/