tree 7f75986f22f71a3311b891413885d6090c7314d7
parent ff98e65095f33c0f9554a548abafba7e9a32b0b7
author Brian Silverman <bsilver16384@gmail.com> 1531002790 -0700
committer Brian Silverman <bsilver16384@gmail.com> 1535736568 -0700

Add build rules for the GSL

This provides many helpful things, such as span.

Change-Id: I4d2a88b0a7cb93fe36a98f21f4a6874e335e063e