Merged some code from Brian so that it builds on the bot.
diff --git a/frc971/control_loops/control_loops.gyp b/frc971/control_loops/control_loops.gyp
index d0fe261..f9f160f 100644
--- a/frc971/control_loops/control_loops.gyp
+++ b/frc971/control_loops/control_loops.gyp
@@ -37,6 +37,11 @@
         '<(DEPTH)/frc971/frc971.gyp:common',
         '<(EXTERNALS):eigen',
       ],
+      'export_dependent_settings': [
+        '<(EXTERNALS):eigen',
+        '<(AOS)/common/common.gyp:controls',
+        'control_loops',
+      ],
     },
     {
       'target_name': 'wrist_lib_test',