Cantor 17.12 crashes working with R and Sage backends and is very slow with some other ones on Arch Linux.

[Alexander Semke]

Hi Fernando,


On 14.01.2018 19:06, Fernando de Morais wrote:
> Hi Alexander,
>
>     Many distribution provide additional packages containing the debug
>     symbols, e.g. 'cantor-debuginfo' and 'libcantorlibs17-debuginfo'
>     on openSUSE.
>
>
> Unfortunately, for enable debug symbols options on packages in Arch 
> Linux is necessary a complete rebuild change the -DCMAKE_BUILD_TYPE 
> (for KDE applications, in this case). I follow the steps mentioned in 
> Arch Wiki, but in every try I get the following result:
>
> ==> Compilando e instalando pacote
> ==>Criando o pacote: cantor 17.12.1-1 (dom jan 14 14:53:53 -03 2018)
> ==>Verificando as dependências de tempo de execução...
> ==>Verificando as dependências de tempo de compilação...
> ==>Obtendo fontes...
>  ->Baixando cantor-17.12.1.tar.xz...
>  % Total    % Received % Xferd  Average Speed   Time    Time     Time 
>  Current
>                                 Dload  Upload   Total   Spent    Left 
>  Speed
> 100   344  100   344    0     0    344      0  0:00:01 --:--:-- 
>  0:00:01   393
> 100 1039k  100 1039k    0     0   173k      0  0:00:06  0:00:06 
> --:--:--  168k
>  ->Baixando cantor-17.12.1.tar.xz.sig...
>  % Total    % Received % Xferd  Average Speed   Time    Time     Time 
>  Current
>                                 Dload  Upload   Total   Spent    Left 
>  Speed
> 100   488  100   488    0     0    488      0  0:00:01 --:--:-- 
>  0:00:01   598
>  ->Encontrado cantor-julia-0.6.patch
> ==>Validando source arquivos com sha256sums...
>    cantor-17.12.1.tar.xz ... Passou
>    cantor-17.12.1.tar.xz.sig ... Ignorada
>    cantor-julia-0.6.patch ... Passou
> ==>Verificando assinatura de arquivo fonte com gpg...
>    cantor-17.12.1.tar.xz ... FALHOU (chave pública desconhecida 
> DBD2CE893E2D1C87)
> ==> ERRO:Uma ou mais assinaturas PGP não puderam ser verificadas!
> ==> ERRO: Makepkg não conseguiu compilar cantor.
>
> In every attempt, I try to remove this key (DBD2CE893E2D1C87), put it 
> again on keys list, and refresh, but, again, I get the same result.
This looks like an issue with the PGP-signature of the ARCH package. We 
cannot help here. You'll need to ask the maintainers of the package:
https://www.archlinux.org/packages/extra/x86_64/cantor/

Alternatively, since you're going to compile from the sources anyway, 
you can 'git clone' Cantor's code from the official repository and 
compile it.
However, you'll need to manually install couple of devel-packages for 
the libraries used by Cantor...


Regards,
Alexander
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