beaglebone blue: build librobotcontrol with cmake

boards/beaglebone/blue/src/CMakeLists.txt

@@ -1,6 +1,6 @@
 ############################################################################
 #
-#   Copyright (c) 2018 PX4 Development Team. All rights reserved.
+#   Copyright (c) 2018-2019 PX4 Development Team. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
@@ -30,10 +30,8 @@
 # POSSIBILITY OF SUCH DAMAGE.
 #
 ############################################################################
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-error")
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-error")
 
-add_library(drivers_board
-	init.c
+px4_add_library(drivers_board
+	init.cpp
 )
-
+target_link_libraries(drivers_board PRIVATE robotics_cape)