landry 531b5386c3 Divide build time by at least three and various fixes, all from semarie@
- stop pruning optimizations coming from the environment (ie OpenBSD's
  default -O2 -pipe) when building llvm - this resulted in a very slow
llvm, and in a veeery slow rust build, and an awfully slow rust
compiler. Yay. See https://github.com/rust-lang/rust/issues/39900
- only add cmake to BDEP when rustc is compiled with bundled llvm
- propagate verbose cmake flag to bundled llvm build

tested on i386 and amd64
2017-02-18 13:15:48 +00:00
..
2017-02-15 12:52:35 +00:00