Update to the latest compilers on conda-forge

[certik]

Important: this requires using LLVM 17 on osx, but LFortran does not work with LLVM 17 yet (it compiles, but only a few tests work so far): lfortran/lfortran#4210. So this PR must stay a draft, until we fully support LLVM 17 in LFortran. Until then this PR is to ensure that at least the conda packages can be built on all platforms.

TODO:

• osx intel/arm, LFortran support for LLVM 17: Implement opaque pointers for LLVM 17 lfortran/lfortran#4210
• osx intel, linker error: Undefined symbol __availability_version_check with LLVM 17 on macOS Intel (osx-64) #96

In the worst case, if we are blocked by the second issue, we can drop macOS / intel support, since eventually it will get dropped anyway once most people move on to Apple Silicon. The first issue however is a blocker. We need to fix that in LFortran first.

Checklist

• Used a personal fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged)
• Reset the build number to 0 (if the version changed)
• Re-rendered with the latest conda-smithy (Use the phrase @conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• Ensured the license file is being packaged.

[conda-forge-webservices]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/meta.yaml) and found it was in an excellent condition.

[certik]

@conda-forge-admin, please rerender

[certik]

The only issue is linking on osx (intel):

[ 85%] Linking CXX executable lfortran
Undefined symbols for architecture x86_64:
  "__availability_version_check", referenced from:
      ___isPlatformVersionAtLeast in libclang_rt.osx.a(os_version_check.c.o)
      __initializeAvailabilityCheck in libclang_rt.osx.a(os_version_check.c.o)
ld: symbol(s) not found for architecture x86_64
x86_64-apple-darwin13.4: error: linker command failed with exit code 1 (use -v to see invocation)

This issue happens with both 0.39.0 (which works with Clang 16) and 0.40.0, so it is caused by the upgrade of Clang from 16 to 17.

Everything else seems to work.

[certik]

@conda-forge-admin, please rerender

[github-actions]

Hi! This is the friendly automated conda-forge-webservice.

I tried to rerender for you, but it looks like there was nothing to do.

This message was generated by GitHub actions workflow run https://github.com/conda-forge/lfortran-feedstock/actions/runs/10541415336.

[certik]

Still the same linker error even after enforcing libcxx 17.

[certik]

Closing in favor of #102.