forgot to add a file...
diff --git a/aos/common/controls/controls.gyp b/aos/common/controls/controls.gyp
new file mode 100644
index 0000000..0551fe3
--- /dev/null
+++ b/aos/common/controls/controls.gyp
@@ -0,0 +1,19 @@
+{
+ 'targets': [
+ {
+ 'target_name': 'polytope',
+ 'type': 'static_library',
+ 'sources': [
+ #'polytope.h',
+ ],
+ 'dependencies': [
+ '<(EXTERNALS):eigen',
+ '<(EXTERNALS):libcdd',
+ ],
+ 'export_dependent_settings': [
+ '<(EXTERNALS):eigen',
+ '<(EXTERNALS):libcdd',
+ ],
+ },
+ ],
+}