This looks like a bug. However, we are planning to stop supporting atlas:
https://trac.sagemath.org/ticket/30350

if you absolutely must use system's atlas, one can perhaps try to work
around it by
creating openblas.pc file pointing at the atlas' libblas

On Thu, Apr 8, 2021 at 8:21 AM A A <a.arogbo...@gmail.com> wrote:
>
>
> Sage 9.2 configuration fails when passed `--with-system-atlas=forced`.
> Thefollowing snippets demonstrates the setup:
>
>     $ export SAGE_ATLAS_LIB='/usr/local/atlas/lib/'
>     $ ./configure --with-blas=atlas --enable-atlas=yes 
> --with-system-atlas=force --prefix=$HOME/sage 
> --with-python='/usr/local/bin/python3.9'
>
> The error message is as follows:
>     Checking whether SageMath should install SPKG atlas...
>     configure: error: given --with-system-atlas=force but no system package 
> could be used
>
> From the documentation
> (https://doc.sagemath.org/html/en/installation/source.html#environment-variables),
> Setting SAGE_ATLAS_LIB should enable ./configure find the requisite libraries.
>
> Any advice on navigating this?
>
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