LLVM 18.1.7

[h-vetinari]

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

• llvmdev v18.1.7 llvmdev-feedstock#266
  • clangdev v18.1.7 clangdev-feedstock#287
    • Build for LLVM 18 cctools-and-ld64-feedstock#65 (only needs major version)
    • compiler-rt v18.1.7 compiler-rt-feedstock#108
      • openmp v18.1.7 openmp-feedstock#127
    • libcxx v18.1.4 libcxx-feedstock#144 (still using libcxx 17 here for now)
  • lld v18.1.7 lld-feedstock#93

Related feedstocks for LLVM 18.1.7 support more generally:

• clang 18.1.7, VS 17.10 clang-win-activation-feedstock#37 (windows side of this PR; needs this PR)
• Add clang 18 ctng-compiler-activation-feedstock#104 (only needs major version)
• flang v18.1.7 flang-feedstock#51 (needs mlir, compiler-rt, openmp)
• Add testing against clang 17 & 18 libcxx-testing-feedstock#6 (only needs major version)
• lldb v18.1.7 lldb-feedstock#68 (needs this PR)
• mlir v18.1.7 mlir-feedstock#71 (needs llvmdev)
• mlir-python-bindings v18.1.7 mlir-python-bindings-feedstock#29 (needs llvmdev & mlir)

[conda-forge-webservices]

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

I wanted to let you know that I linted all conda-recipes in your PR (recipe) and found some lint.

Here's what I've got...

For recipe:

• Failed to even lint the recipe, probably because of a conda-smithy bug 😢. This likely indicates a problem in your meta.yaml, though. To get a traceback to help figure out what's going on, install conda-smithy and run conda smithy recipe-lint . from the recipe directory.

[h-vetinari]

The linter hint will be fixed as soon as conda-forge/conda-smithy#1946 is in a smithy release.