[clang] [llvm] [llvm] Enable LLVM_LINK_LLVM_DYLIB by default on non-Windows platforms (PR #138187)

[Reid Kleckner via llvm-commits]

rnk wrote:

> What about LLVM_TOOL_LLVM_DRIVER_BUILD? Maybe consider enabling it by default on non-Windows platforms?

The driver build is great and useful, but for reasons discussed in the RFC, I don't think it makes a great default build configuration. It only solves the static linking scaling problems of LLVM tools, and not of LLVM/Clang/MLIR API users.

Don't get me wrong, it might be a great tuned LLVM developer build configuration, it's just not clear to me that it should be the default.

https://github.com/llvm/llvm-project/pull/138187