Build error

Created by: adrianN

Reproduction: Follow the instructions in the book to build redox

Expected behavior: Redox is built.

Actual behavior: Make fails. See https://gist.github.com/adrianN/2b1c09d83bae4b88acf82a25f8856a0f

Build information: [output of rustc -V, git rev-parse HEAD, qemu-i386 -version, uname -a, etc.] MacBook:redox aneumann$ rustc -V rustc 1.17.0-nightly (306035c21 2017-02-18) MacBook:redox aneumann$ git rev-parse HEAD 11bc60d3 MacBook:redox aneumann$ uname -a Darwin MacBook 15.6.0 Darwin Kernel Version 15.6.0: Mon Jan 9 23:07:29 PST 2017; root:xnu-3248.60.11.2.1~1/RELEASE_X86_64 x86_64