https://github.com/rust-lang/rust http://git.dreamy.place/mirrors/rust/atom?h=1.4.0 2015-02-06T21:53:39+00:00 2015-02-06T21:53:39+00:00 Alex Crichton alex@alexcrichton.com 2015-02-06T21:40:00+00:00 urn:sha1:48b6aef6605794a9da0d9254960a91bbea0a0737 The compiler would previously fall back to using `-L` and normal lookup paths if a `--extern` path was specified but it did not match (wrong architecture, for example). This commit removes this behavior and forces the hand of the crate loader to *always* use the `--extern` path if specified, no matter whether it is correct or not. This fixes a bug today where the compiler's own libraries are favored in cross compilation by accident. For example when a crate using the crates.io version of `log` was cross compiled, Cargo would compile `log` for the target architecture. When loading the macros, however, the compiler currently favors using the *host* architecture (for plugins), and because the `--extern log=...` pointed at an rlib for the target architecture, that lookup failed. The crate loader then fell back on `-L` paths to find the compiler-used `log` crate (the wrong one!) and then a compile failure happened because the logging macros are slightly different.