This is c++11 dual abi, see https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_dual_abi.html
IMHO we just shouldn't use the system version then, but building Sage with -D_GLIBCXX_USE_CXX11_ABI=0 should allow you to link with old-style abi libraries. The default value of _GLIBCXX_USE_CXX11_ABI can be changed by the distro, which is probably what accounts for the differences seen in this thread. On Saturday, May 8, 2021 at 7:01:13 PM UTC+2 Steven Trogdon wrote: > Building Givaro on Gentoo I have > > CXXFLAGS=-O2 -pipe -march=native -O2 -pipe -fabi-version=6 -msse > -msse2 -msse3 -mssse3 -msse4.1 -msse4.2 -mavx > > Your Redhat has > > CXXFLAGS=-O2 -g -pipe -Wall -Werror=format-security > -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions > -fstack-protector-strong -grecord-gcc-switches > -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 > -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic > -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection > > Could the abi-version=6 be the issue? > > On Saturday, May 8, 2021 at 6:01:02 AM UTC-6 dim...@gmail.com wrote: > >> one has >> https://kojipkgs.fedoraproject.org//packages/givaro/4.1.1/1.fc32/data/logs/x86_64/build.log >> and other logs there >> >> On Saturday, May 8, 2021 at 12:45:07 PM UTC+1 Dima Pasechnik wrote: >> >>> On Saturday, May 8, 2021 at 12:34:11 PM UTC+1 François Bissey wrote: >>> >>>> What compiler and flags have used to compile fedora 32 givaro? Can we >>>> easily find out? >>> >>> >>> the compiler used to build Sage is g++ 10.2.1 >>> >>> $ g++ -v >>> Using built-in specs. >>> COLLECT_GCC=/usr/bin/g++ >>> COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/10/lto-wrapper >>> OFFLOAD_TARGET_NAMES=nvptx-none >>> OFFLOAD_TARGET_DEFAULT=1 >>> Target: x86_64-redhat-linux >>> Configured with: ../configure --enable-bootstrap >>> --enable-languages=c,c++,fortran,objc,obj-c++,ada,go,d,lto --prefix=/usr >>> --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl= >>> http://bugzilla.redhat.com/bugzilla --enable-shared >>> --enable-threads=posix --enable-checking=release --enable-multilib >>> --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions >>> --enable-gnu-unique-object --enable-linker-build-id >>> --with-gcc-major-version-only --with-linker-hash-style=gnu --enable-plugin >>> --enable-initfini-array --with-isl --enable-offload-targets=nvptx-none >>> --without-cuda-driver --enable-gnu-indirect-function --enable-cet >>> --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux >>> Thread model: posix >>> Supported LTO compression algorithms: zlib zstd >>> gcc version 10.2.1 20201125 (Red Hat 10.2.1-9) (GCC) >>> >>> >>> >>>> >>>> >>>> > On 8/05/2021, at 23:31, Dima Pasechnik <dim...@gmail.com> wrote: >>>> > >>>> > With system Givaro, one gets >>>> > >>>> > [dochtml] ImportError: >>>> /home/scratch2/dimpase/sage/sage/local/lib64/python3.8/site-packages/sage/matrix/ >>>> matrix_modn_sparse.cpython-38-x86_64-linux-gnu.so: undefined symbol: >>>> _ZNK6Givaro7IntegercvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEB5cxx11Ev >>>> >>>> >>>> > make[3]: *** [Makefile:2280: doc-html] Error 1 >>>> > >>>> > which demangled says >>>> > >>>> > $ c++filt >>>> _ZNK6Givaro7IntegercvNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEB5cxx11Ev >>>> >>>> >>>> > Givaro::Integer::operator std::__cxx11::basic_string<char, >>>> std::char_traits<char>, std::allocator<char> >[abi:cxx11]() const >>>> > >>>> > The system library has Givaro::Integer::operator >>>> std::__cxx11::basic_string<char, std::char_traits<char>, >>>> std::allocator<char> >() const >>>> > >>>> > (no of that weird [abi:cxx11] qualifier) >>>> > >>>> > Any ideas how to fix this? (besides not using system Givaro) ? >>>> > >>>> > Dima >>>> > >>>> > -- >>>> > 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+...@googlegroups.com. >>>> > To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/sage-devel/b187faf3-50c4-42c4-ae37-77c5a3902bbcn%40googlegroups.com. >>>> >>>> >>>> >>>> -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/d5ab7843-811a-452d-bf74-c3c21bc4aef2n%40googlegroups.com.
