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Date: Mon, 27 Apr 2020 12:09:11 +0300
From: "Adrian Bunk" <bunk@stusta.de>
To: Richard Purdie <richard.purdie@linuxfoundation.org>
Cc: Alexander Kanavin <alex.kanavin@gmail.com>,
	OE-core <openembedded-core@lists.openembedded.org>
Subject: Re: [OE-core] [PATCH 01/15] rpm: upgrade to 4.15.1
Message-ID: <20200427090911.GA19242@localhost>
References: <20200425172814.27370-1-alex.kanavin@gmail.com>
 <9121b61b00747df8d326b422d2bb34258dd6665c.camel@linuxfoundation.org>
 <160972188EAFC253.2907@lists.openembedded.org>
 <CANNYZj9MJiBPZE+-MYLVAe2nfR5rwCsE9fONwXM5omfT4Y1sWQ@mail.gmail.com>
 <a2ee87b585ad797813c6985218ae0e3ea360597e.camel@linuxfoundation.org>
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On Sun, Apr 26, 2020 at 10:07:30PM +0100, Richard Purdie wrote:
> On Sun, 2020-04-26 at 22:40 +0200, Alexander Kanavin wrote:
>...
> > What is particularly odd is that the centos/debian failures are non-
> > deterministic: in some cases rpm-native fails to build due to missing
> > omp.h, in other cases it builds, but the resulting binaries segfault.
> >...
> > Ubuntu always segfaults, but maybe it's just coincidental.
>...
> We are aiming to support these using buildtools tarball which should
> already be active on centos7/debian8 (but not ubuntu1604) so I'm a
> little worried this may point to a problem with the buildtools tarball
> :(
>...

I don't see omp.h installed anywhere by the buildtools-extended tarball.
This would explain the build failures.

gcc 6 updated OpenMP support from OpenMP 4.0 to OpenMP 4.5.
This might be a plausible explanation for segfaults on systems
with older libgomp.

> Cheers,
> 
> Richard

cu
Adrian