Use the downloaded clang when building for armhf-debian

This makes it work on a barebones Stretch installation.

Also add building for this CPU to the CI script so we know it keeps
working, which means marking everything that's supposed to work
appropriately.

Change-Id: Ic050ce20eae45c6b23e0e42dddb24db3ebc70b84
diff --git a/y2016/control_loops/drivetrain/BUILD b/y2016/control_loops/drivetrain/BUILD
index 13c1ba3..f798681 100644
--- a/y2016/control_loops/drivetrain/BUILD
+++ b/y2016/control_loops/drivetrain/BUILD
@@ -1,78 +1,87 @@
-package(default_visibility = ['//visibility:public'])
+package(default_visibility = ["//visibility:public"])
 
-load('//aos/build:queues.bzl', 'queue_library')
+load("//aos/build:queues.bzl", "queue_library")
 
 genrule(
-  name = 'genrule_drivetrain',
-  visibility = ['//visibility:private'],
-  cmd = '$(location //y2016/control_loops/python:drivetrain) $(OUTS)',
-  tools = [
-    '//y2016/control_loops/python:drivetrain',
-  ],
-  outs = [
-    'drivetrain_dog_motor_plant.h',
-    'drivetrain_dog_motor_plant.cc',
-    'kalman_drivetrain_motor_plant.h',
-    'kalman_drivetrain_motor_plant.cc',
-  ],
+    name = "genrule_drivetrain",
+    outs = [
+        "drivetrain_dog_motor_plant.h",
+        "drivetrain_dog_motor_plant.cc",
+        "kalman_drivetrain_motor_plant.h",
+        "kalman_drivetrain_motor_plant.cc",
+    ],
+    cmd = "$(location //y2016/control_loops/python:drivetrain) $(OUTS)",
+    compatible_with = [
+        "//tools:armhf-debian",
+    ],
+    tools = [
+        "//y2016/control_loops/python:drivetrain",
+    ],
+    visibility = ["//visibility:private"],
 )
 
 genrule(
-  name = 'genrule_polydrivetrain',
-  visibility = ['//visibility:private'],
-  cmd = '$(location //y2016/control_loops/python:polydrivetrain) $(OUTS)',
-  tools = [
-    '//y2016/control_loops/python:polydrivetrain',
-  ],
-  outs = [
-    'polydrivetrain_dog_motor_plant.h',
-    'polydrivetrain_dog_motor_plant.cc',
-    'polydrivetrain_cim_plant.h',
-    'polydrivetrain_cim_plant.cc',
-  ],
+    name = "genrule_polydrivetrain",
+    outs = [
+        "polydrivetrain_dog_motor_plant.h",
+        "polydrivetrain_dog_motor_plant.cc",
+        "polydrivetrain_cim_plant.h",
+        "polydrivetrain_cim_plant.cc",
+    ],
+    cmd = "$(location //y2016/control_loops/python:polydrivetrain) $(OUTS)",
+    compatible_with = [
+        "//tools:armhf-debian",
+    ],
+    tools = [
+        "//y2016/control_loops/python:polydrivetrain",
+    ],
+    visibility = ["//visibility:private"],
 )
 
 cc_library(
-  name = 'polydrivetrain_plants',
-  srcs = [
-    'polydrivetrain_dog_motor_plant.cc',
-    'drivetrain_dog_motor_plant.cc',
-    'kalman_drivetrain_motor_plant.cc',
-  ],
-  hdrs = [
-    'polydrivetrain_dog_motor_plant.h',
-    'drivetrain_dog_motor_plant.h',
-    'kalman_drivetrain_motor_plant.h',
-  ],
-  deps = [
-    '//frc971/control_loops:state_feedback_loop',
-  ],
+    name = "polydrivetrain_plants",
+    srcs = [
+        "drivetrain_dog_motor_plant.cc",
+        "kalman_drivetrain_motor_plant.cc",
+        "polydrivetrain_dog_motor_plant.cc",
+    ],
+    hdrs = [
+        "drivetrain_dog_motor_plant.h",
+        "kalman_drivetrain_motor_plant.h",
+        "polydrivetrain_dog_motor_plant.h",
+    ],
+    compatible_with = [
+        "//tools:armhf-debian",
+    ],
+    deps = [
+        "//frc971/control_loops:state_feedback_loop",
+    ],
 )
 
 cc_library(
-  name = 'drivetrain_base',
-  srcs = [
-    'drivetrain_base.cc',
-  ],
-  hdrs = [
-    'drivetrain_base.h',
-  ],
-  deps = [
-    ':polydrivetrain_plants',
-    '//frc971/control_loops/drivetrain:drivetrain_config',
-    '//frc971:shifter_hall_effect',
-    '//y2016:constants',
-  ],
+    name = "drivetrain_base",
+    srcs = [
+        "drivetrain_base.cc",
+    ],
+    hdrs = [
+        "drivetrain_base.h",
+    ],
+    deps = [
+        ":polydrivetrain_plants",
+        "//frc971:shifter_hall_effect",
+        "//frc971/control_loops/drivetrain:drivetrain_config",
+        "//y2016:constants",
+    ],
 )
 
 cc_binary(
-  name = 'drivetrain',
-  srcs = [
-    'drivetrain_main.cc',
-  ],
-  deps = [
-    ':drivetrain_base',
-    '//aos/linux_code:init',
-    '//frc971/control_loops/drivetrain:drivetrain_lib',
-  ],
+    name = "drivetrain",
+    srcs = [
+        "drivetrain_main.cc",
+    ],
+    deps = [
+        ":drivetrain_base",
+        "//aos/linux_code:init",
+        "//frc971/control_loops/drivetrain:drivetrain_lib",
+    ],
 )