LLVM 21.1.3

[xhochy]

Blockers for merging this PR and thus enabling the compilers in conda-forge (indentation denotes dependency):

• libcxx v21.1.3 libcxx-feedstock#250
• llvmdev v21.1.3 llvmdev-feedstock#349
  • Build for LLVM v21.1 cctools-and-ld64-feedstock#89 (major-only)
  • compiler-rt v21.1.3 compiler-rt-feedstock#161
    • openmp v21.1.3 openmp-feedstock#194
      • clangdev v21.1.3 clangdev-feedstock#391 (also needs libcxx and ld64)
  • lld v21.1.3 lld-feedstock#142

Other LLVM-related feedstocks:

• mlir v21.1.3 mlir-feedstock#110 (needs llvmdev)
  • flang v21.1.3 flang-feedstock#115 (also needs clangdev)
    • flang-rt v21.1.3 flang-rt-feedstock#9
      • flang-activation v21.1.3 flang-activation-feedstock#40 (also needs lld)
• add clang v21.1 libcxx-testing-feedstock#17 (major-only)
• lldb v21.1.3 lldb-feedstock#95 (needs this PR)
• mlir-python-bindings v21.1.3 mlir-python-bindings-feedstock#61 (needs mlir & this PR)

[conda-forge-admin]

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.

I do have some suggestions for making it better though...

For recipe/meta.yaml:

• ℹ️ The recipe is not parsable by parser conda-recipe-manager. The recipe can only be automatically migrated to the new v1 format if it is parseable by conda-recipe-manager.

_{This message was generated by GitHub Actions workflow run https://github.com/conda-forge/conda-forge-webservices/actions/runs/18336129876. Examine the logs at this URL for more detail.}

[h-vetinari]

Thanks! Note that the order of dependencies has changed very recently, in that we now need compiler-rt, openmp and cctools before we can build clangdev

[conda-forge-admin]

Hi! This is the friendly conda-forge automerge bot!

I considered the following status checks when analyzing this PR:

• linter: passed
• azure: passed

Thus the PR was passing and merged! Have a great day!