In sage-on-gentoo I don't seem to hit that problem with 4.9.2 
either. I am really curious about your default building flags.

Francois

On Mon, 01 Dec 2014 12:51:50 François Bissey wrote:
> Very strange I don't have it in sage-on-gentoo.
> objdump -T --demangle  /usr/lib64/libcsage.so |grep ZZ_p_to_int
> 0000000000009320 g    DF .text  000000000000000e  Base        ZZ_p_to_int
> 
> sage -v
> Sage Version 6.5.beta1, Release Date: 2014-11-23
> 
> We had a few issue with C++ ompiling during the upgrade and more have
> surfaced on my side with people trying out -flto but not that particular
> symbol. flto seems to mess up inline templates the same way that we found
> not all versions of were producing symbol for them in
> http://trac.sagemath.org/ticket/16882
> as pointed out by Volker.
> 
> Since gcc 4.9.2 is shipped in sage and a number of people are using it
> I would be looking at any flags you are using. I may have a shot at
> gcc 4.9.2 here.
> 
> Francois
> 
> On Sun, 30 Nov 2014 11:44:09 Paulo César Pereira de Andrade wrote:
> >   I think this may have been working somewhat of by accident
> > 
> > before, because it says 'extern "C"' in one place and in another
> > say '// sorry, if you want a C version, feel free to add it'
> > 
> >   I delayed a bit sagemath 6.4 update due to some dependencies
> > 
> > needing to be updated in Fedora, in the meantime 6.4.1 was
> > released.
> > 
> >   Trying to update to Fedora sagemath rpm to 6.4.1 I am being
> > 
> > hit by this:
> > 
> > ---%<---
> > 
> >   File
> > 
> > "/home/pcpa/rpmbuild/BUILDROOT/sagemath-6.4.1-1.fc22.x86_64/usr/lib64/pyth
> > o
> > n2.7/site-packages/sage/libs/ntl/__init__.py", line 1, in <module>
> > 
> >     import all
> >   
> >   File
> > 
> > "/home/pcpa/rpmbuild/BUILDROOT/sagemath-6.4.1-1.fc22.x86_64/usr/lib64/pyth
> > o
> > n2.7/site-packages/sage/libs/ntl/all.py", line 34, in <module>
> > 
> >     from sage.libs.ntl.ntl_ZZ_p import (
> > 
> > ImportError:
> > /home/pcpa/rpmbuild/BUILDROOT/sagemath-6.4.1-1.fc22.x86_64/usr/lib64/pytho
> > n
> > 2.7/site-packages/sage/libs/ntl/ntl_ZZ_p.so: undefined symbol: ZZ_p_to_int
> > error: Bad exit status from /var/tmp/rpm-tmp.moMkJq (%install)
> > ---%<---
> > 
> >   Previously it was exported as a "C" symbol:
> > $ rpm -q sagemath
> > sagemath-6.3-3.fc22.x86_64
> > $ objdump -T --demangle /usr/lib64/libcsage.so | grep ZZ_p_to_int
> > 0000000000008760 g    DF .text  0000000000000005  Base        ZZ_p_to_int
> > 
> >   But the newly generated libcsage.so does only show a C++ symbol:
> > $ objdump -T --demangle BUILD/sage-6.4.1/src/c_lib/libcsage.so | grep
> > ZZ_p_to_int
> > 00000000000087d0 g    DF .text  0000000000000005  Base
> > ZZ_p_to_int(NTL::ZZ_p const&)
> > 
> >   So, it may be required some extra wrapping, but more likely,
> > 
> > patch the cython code to only use ZZ_to_int(ZZ*).
> > 
> >   This may also be useful...
> > 
> > $ rpm -q gcc binutils
> > gcc-4.9.2-1.fc22.x86_64
> > binutils-2.24-29.fc22.x86_64
> > 
> > Thanks,
> > Paulo

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