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Summary: There are a few default options that LLVM adds that can be problematic for runtimes builds. These options are generally intended to handle building LLVM itself, but are also added when building in a runtimes mode. One such issue I've run into is that in `libc` we deliberately use `--target` to use a different device toolchain, which doesn't support some linker arguments passed via `-Wl`. This is observed in https://github.com/llvm/llvm-project/pull/73030 when attempting to use these options. This patch completely removes these default arguments. The consensus is that any issues created by this patch should ultimately be solved on a per-runtime basis.