I'm getting the following error while building Android ROM, either it is AOSP/CyanogenMod
In file included from hardware/ril-caf/libril/RilSapSocket.cpp:21:0:
hardware/ril-caf/libril/RilSapSocket.h:22:55: fatal error: hardware/ril/librilutils/proto/sap-api.pb.h: No such file or directory
#include <hardware/ril/librilutils/proto/sap-api.pb.h>
^
compilation terminated.
When I look into the path in github.com/CyanogenMod and github.com/Android I couldn't find sap-api.pb.h What could be the problem and how can I resolve it?