Re: [gentoo-user] world rebuild with gcc-6.3.0 - not completely there yet

[Helmut Jarausch]

On 05/13/2017 04:07:52 PM, Miroslav Rovis wrote:
> On 170513-10:21+0200, Helmut Jarausch wrote:
> > On 05/13/2017 05:56:16 AM, Walter Dnes wrote:
> > > On Wed, May 10, 2017 at 08:38:56PM -0400, Walter Dnes wrote
> > > >   "Walter's Excellent Adventure Continues"... Now that I've got
> ICEWM
> > > > built, I'm trying to start X.  I copied over my ~/.icewm
> cirectory,
> ...
> > > > cursor... for half a second or so.  Then X exits immediately.  I
> ...
> > >   This message is coming to you from an almost entirely GCC 6.3.0
> > > machine.  I had to build ICEWM with GCC 5.4.0 to stop it
> segfaulting.
> > > The rest of Gentoo, including ICEWM's dependancies, is built with
> GCC
> > > 6.3.0.
> > >
> >
> > I have switched to gcc-6.3.0 at the end of last year.
> > I have (re-)compiled all my packages including icewm-1.3.12-r1.
> > Everything works just fine.
> >
> > I did have some segfaults (with gimp) until I recompiled each
> package
> > with gcc-6.3.0
> >
> > I have
> > CFLAGS="-mtune=native -O2 -msse3 -pipe -fPIC"
> >
> > in /etc/portage/make.conf
> >
> > and quite a e few
> > CFLAGS="-O3 -mtune=native -pipe -msse -msse2 -msse3 -msse4a -m3dnow"
> > (for my aged AMD64  Phenom II machine)
> >
> > in /etc/portage/env/...
> >
> > Helmut
> >
> I have a Phenom II machine as well. And I'd be interested what you
> needed to stick in the /etc/portage/env/, if you could tell me, pls.
>

Here an example: if you want to set some environment variables for  
sci-libs/atlas :

First, create the directory

/etc/portage/env/sci-libs

Second, create the file 'atlas', e.g. by

echo 'CFLAGS="-O3 -mtune=native -pipe -msse -msse2 -msse3 -msse4a  
-m3dnow"' > atlas