On Wed, Jan 15, 2020 at 9:12 AM 'Martin R' via sage-release
<sage-release@googlegroups.com> wrote:
>
> Dear all,
>
> I have a problem with r-3.6.2 in 9.1.beta0 in an python2 build (incremental 
> from a relatiively recent release, but I don't remember which) on Ubuntu 
> 18.04.3, and I have absolutely no clue.  The last bit of the error message is
>
The R problem is known, and related to recent gfortran releases.
https://developer.r-project.org/Blog/public/2019/05/15/gfortran-issues-with-lapack/

You might instead install openblas and R from the system, they should
be recognised.
(also gsl, cliquer, so, for Ubuntu, `apt-get libopenblas-dev
r-base-dev libgsl-dev libcliquer-dev cliquer`)
as well as `make openblas-clean gsl-clean cliquer-clean`
before ./configure && make build



> [r-3.6.2] ../../Makeconf:124: recipe for target 'integrate.o' failed
> [r-3.6.2] make[7]: *** [integrate.o] Error 1
>
> sage starts and is otherwise usable.
>
> The log is attached.  It would be great if I could avoid rebuilding all of 
> sage, because this is an old laptop...
>
> Many many thanks,
>
> Martin
>
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