We just upgraded NTL, the new version should be better with C++: Trac #16882.
Having said that, I didn't have any problems compiling Sage-6.4.1 on Fedora 21. It might be that your toolchain is too bleeding-edge... On Sunday, November 30, 2014 1:44:11 PM UTC, 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/python2.7/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/python2.7/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/python2.7/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 > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
