mozilla/rust — pull request #10749 by Blei (2013-12-01 10:22:28+00:00)
Title: rustc: filter out empty linker args

This is inspired by a mystifying linker failure when using `pkg-config` to
generate the linker args: `pkg-config` produces output that ends in a
space, thus resulting in an empty linker argument.

Also added some updates to the concerning error messages that helped
spotting this bug.