On Sunday, May 9, 2021 at 11:24:23 AM UTC+1 Volker Braun wrote:
> 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. > Are you saying it's a bug in Fedora 32, they should have provided dual ABI, like Gentoo does, but they don't? Or that they provide an old-style ABI, and we can use ` -D_GLIBCXX_USE_CXX11_ABI=0` to make this work for Sage? Isn't c++11 "old" nowadays? I tried to write a short C++ code do produce this error, so that we can put it into our gcc/spkg-configure.m4, but I cannot figure it out. > > > 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/ce133454-fb09-4adf-b865-c9256c851782n%40googlegroups.com.
