On Sunday, May 9, 2021 at 11:28:30 AM UTC+1 Volker Braun wrote:

> PS: Fedora 32 EOL is imminent (= 4 weeks after the just-released fedora 
> 34), so I wouldn't worry too much about it
>

Our IT just updated this machine for me, from a long EOLed Fedora, to 
Fedora 32. 
I just asked them to make me an early Fedora 34 adopter...
 

>
> On Sunday, May 9, 2021 at 12:24:23 PM UTC+2 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.
>>
>>
>> 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 
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>>>>>> 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.
>>>>>>  
>>>>>>
>>>>>>
>>>>>>

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