[Build] Enable use of clang-15 on linux. Prioritize numbered clang over defau… #8713
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…lt clang
Issue: #
Brief Summary
Enable use of clang-15 on linux. Prioritize numbered clang over default clang
copilot:summary
Walkthrough
the documentatino says to install clang-15, is sufficient
in praactice, clang-15 provides

clang-15
command, and notclang
command, and is not sufficient: built terminates with 'cannot find a clang compiler'this PR addresses this issue, by adding search for
clang-15
compilerin addition, since later versions of clang do not play well with loading the llvm runtime, numbered clangs are prioritized now in search order, relative to default, un-numbered, clang.
copilot:walkthrough