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a4cf1f89ab
link libunwind dynamically and allow controlling it via `crt-static` on gnullvm targets Alternative to https://github.com/rust-lang/rust/pull/121794 ``` $ cargo b -r Finished `release` profile [optimized] target(s) in 0.38s $ ntldd target/release/hello.exe | rg unwind libunwind.dll => H:\msys64\clang64\bin\libunwind.dll (0x0000020c35df0000) $ RUSTFLAGS="-C target-feature=+crt-static" cargo b -r Finished `release` profile [optimized] target(s) in 0.23s $ ntldd target/release/hello.exe | rg unwind ```
rustc_target contains some very low-level details that are
specific to different compilation targets and so forth.
For more information about how rustc works, see the rustc dev guide.