[clang] [flang] [clang][driver] Special care for -l flags in config files (PR #117573)

[Michał Górny via cfe-commits]

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+-ffast-math -lm -lhappy
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mgorny wrote:

Could you also include some "positional" `-Wl` flags, like `-Wl,-Bstatic` and `-Wl,-Bdynamic`?

https://github.com/llvm/llvm-project/pull/117573