CI issue: intel build fails

[certik]

This has been a long standing issue affecting many PRs.

The first attempt to fix it was #976.

Here is a related discussion at Fortran Discourse: https://fortran-lang.discourse.group/t/issue-with-stdlib-and-intel-oneapi-fortran-compiler-ifx-2024-0/7049

It is possible that the Intel CI failure is somehow related to the bug #980.

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This is affecting the PR #879 that we need to merge.

[certik]

To move forward, I would disable the Intel test until it is fixed. Not much we can do anyway, since we need to move on and be able to develop fpm.

[perazz]

The CI line failing says <ERROR>:failed command ifort , I think it is because ubuntu images on Github do not ship ifort anymore. It should self-fix after merge (like you point out in #976, the fpm main branch was already updated to use ifx instead of ifort).

[perazz]

More context is found on Fortran Discourse and Intel Compiler Forum.

So far the most likely explanation is that there is a compiler bug in ifx, and that we'll have to wait until it is fixed in an upcoming release.

The proposed fix in #879 is to always build fpm with gfortran, then only build the test programs with ifx.