Alex Crichton 884715c654 rustc: Load the rustc_trans crate at runtime ...

Building on the work of # 45684 this commit updates the compiler to
unconditionally load the `rustc_trans` crate at runtime instead of linking to it
at compile time. The end goal of this work is to implement # 46819 where rustc
will have multiple backends available to it to load.

This commit starts off by removing the `extern crate rustc_trans` from the
driver. This involved moving some miscellaneous functionality into the
`TransCrate` trait and also required an implementation of how to locate and load
the trans backend. This ended up being a little tricky because the sysroot isn't
always the right location (for example `--sysroot` arguments) so some extra code
was added as well to probe a directory relative to the current dll (the
rustc_driver dll).

Rustbuild has been updated accordingly as well to have a separate compilation
invocation for the `rustc_trans` crate and assembly it accordingly into the
sysroot. Finally, the distribution logic for the `rustc` package was also
updated to slurp up the trans backends folder.

A number of assorted fallout changes were included here as well to ensure tests
pass and such, and they should all be commented inline.

2018-01-27 19:16:21 -08:00

..

compiler_builtins_shim

Bump cc to 1.01 to include x86_64-unknown-linux-gnux32 support

2017-10-11 21:35:53 -03:00

dlmalloc_shim

std: Add a new wasm32-unknown-unknown target

2017-11-19 21:07:41 -08:00

libc_shim

Trim and document libc shim

2017-09-21 22:25:02 -04:00

Cargo.toml

rustc: Load the rustc_trans crate at runtime

2018-01-27 19:16:21 -08:00

rustc.rs

Add a Cargo-based build system

2016-02-11 10:42:28 -08:00