Re: [gentoo-science] Emerge Sage-doc-6.3 fails 3.16.5-sources gcc-4.8.3 with lto and graphite

[François Bissey]

I think I will ping pynac upstream to see if they have any idea but I think
it may be a recurring gcc or a subtle abuse of C++. It would be interesting to see
if putting -fno-fat-lto-objects would with getting the symbol in pynac. There are
other things ‘i can think off that may work but need to consult upstream and
people who know more c++.

François

> On 26/11/2014, at 18:57, Jeramia Poland <jeramia.poland@×××××.com> wrote:
>
> The output of
>
> nm -D /usr/lib64/python2.7/site-packages/sage/symbolic/pynac.so | grep
> ZTVN5GiNaC9containerISt6vectorEE
>
> is:
>
> U _ZTVN5GiNaC9containerISt6vectorEE  (with the ZTVN part showing up in red)
>
> The output of
>
> nm -D /usr/lib64/libpynac.so.1.1.0 | grep ZTVN5GiNaC9containerISt6vectorEE
>
> is:
>
> (nothing it appears to be missing)
>
> Output of the third command is attached.  The -ffat-lto-objects flag should be in there.  I added after the first couple of packages (like pciutils, elfutils, openssh, etc.) wouldn't build to see if it would help so I didn't have to use the "no-lto" environment setting from that graphite and lto instruction page I referenced earlier.  It didn't see to work as I now have a package.env file full of no-lto entries. Neither sage nor pynac are no-lto entries right now as it appeared to me that they merged.
>
> Jeramia
>
>
>
> On Wed, Nov 26, 2014 at 2:43 AM, François Bissey <frp.bissey@×××××.com> wrote:
> I think I have all the logs I can use at the moment. I want the output of the
> following two commands:
> nm -D /usr/lib64/python2.7/site-packages/sage/symbolic/pynac.so | grep
> ZTVN5GiNaC9containerISt6vectorEE
>
> nm -D /usr/lib64/libpynac.so.1.1.0 | grep ZTVN5GiNaC9containerISt6vectorEE
>
> Actually make that 3 commands with the output of
> readelf -d /usr/lib64/python2.7/site-packages/sage/symbolic/pynac.so
>
> Also to cross check that I am not missing anything fro your info output,
> I cannot see "-ffat-lto-objects" anywhere in your compilation flags.
> Is this correct?
>
> Francois
>
> On Mon, 24 Nov 2014 19:05:42 François Bissey wrote:
> > Hum I am starting to wonder if there are things going on between lot and C++
> > templates. More professional code may do ok but a lot of the stuff we have
> > in sage may be a bit dubious. Can you send me the penal build log please
> > and for good measure the one for sage. You can do it privately if you don’t
> > want to post big file on the list.
> >
> > I have been free of grading for almost 4 years. My wife is very happy about
> > that.
> >
> > François
> >
> > > On 24/11/2014, at 17:12, Jeramia Poland <jeramia.poland@×××××.com> wrote:
> > >
> > > Sorry for the delayed reply, I had a bunch of papers to grade. Yes, it is
> > > installed. Attached are the lld results. Jeramia
> > >
> > > On Sun, Nov 23, 2014 at 1:20 AM, François Bissey <frp.bissey@×××××.com>
> > > wrote: I hate automated spellchecking, I meant pynac not “penal” I
> > > remember turning it off on an iPad after a ludicrous suggestion for
> > > lapack.
> > >
> > > François
> > >
> > > > On 22/11/2014, at 15:33, François Bissey <frp.bissey@×××××.com> wrote:
> > > >  I assume penal is installed otherwise
> > >
> > > <lib_link_1.txt><lib_link_2.txt>
>
>
>
> <readelf.txt>