Reintroduce rustc_llvm dependency in rustc

The dependency was removed in
352b44d, but it is needed in order to
compute the target features.

Author: ranma42

mk/crates.mk

@@ -97,7 +97,7 @@ DEPS_rustc_const_eval := rustc_const_math rustc syntax log serialize \
 					     rustc_back graphviz
 
 DEPS_rustc := syntax fmt_macros flate arena serialize getopts rbml \
-              log graphviz rustc_back rustc_data_structures\
+              log graphviz rustc_llvm rustc_back rustc_data_structures\
 		  	  rustc_const_math
 DEPS_rustc_back := std syntax flate log libc
 DEPS_rustc_borrowck := rustc rustc_mir log graphviz syntax

src/librustc/Cargo.toml

@@ -19,5 +19,6 @@ rustc_back = { path = "../librustc_back" }
 rustc_bitflags = { path = "../librustc_bitflags" }
 rustc_const_math = { path = "../librustc_const_math" }
 rustc_data_structures = { path = "../librustc_data_structures" }
+rustc_llvm = { path = "../librustc_llvm" }
 serialize = { path = "../libserialize" }
 syntax = { path = "../libsyntax" }

src/librustc/lib.rs

@@ -51,6 +51,7 @@ extern crate getopts;
 extern crate graphviz;
 extern crate libc;
 extern crate rbml;
+extern crate rustc_llvm as llvm;
 extern crate rustc_back;
 extern crate rustc_data_structures;
 extern crate serialize;