Building gfortran fails on GNU/Linux with Apple silicon

[aikrahguzar]

Environment

- **OS**: Fedora Asahi Remix 40
- **Sage Version**: SageMath version 10.5.beta0, Release Date: 2024-07-24

Steps To Reproduce

I ran on a Macbook air M2 running Fedora Asahi Linux,

./configure
make build

Config log

config.log.txt

Package logs

gfortran-13.2.0.log.txt

Additional Information

The error seems to be due to the fact that the build process tries to install darwin version of the gfrotran and not the linux version.

I can workaround this by installing gfrotran from fedora repos. However that runs into issue with installing tachyon #23712 (comment)

[Aside] I have a working installation of sage from nixpkgs. I wonder how they are getting around the tachyon issue.

Checklist

• I have searched the existing issues for a bug report that matches the one I want to file, without success.
• I have read the documentation and troubleshoot guide

[dimpase]

Sage should leave building Fortran to experts.
Can't you use gfortran from the OS distribution?

[dimpase]

tachyon issue is a different one. for one, tachyon doesn't use Fortran.

That is, just use gfortran from OS.

[mkoeppe]

Sage should leave building Fortran to experts.

Thanks very much, this package is in the hand of an expert.

[aikrahguzar]

Sage should leave building Fortran to experts. Can't you use gfortran from the OS distribution?

Installing the fedora package works.

[mkoeppe]

@aikrahguzar Please try with

• build/pkgs/gcc: Update to 13.3 #38442

[aikrahguzar]

@aikrahguzar Please try with

* [`build/pkgs/gcc`: Update to 13.3 #38442](https://github.com/sagemath/sage/pull/38442)

Thanks a lot. I checked out that commit, uninstalled the fedora gfortran and then ran make build again. gfortran was built successfully and now the build has moved on to openblas. So the original issue seems fixed.

Edit: The build itself fails while building tachyon but that is an unrelated issue and has been fixed separately.

[mkoeppe]

Thanks for testing!