LiquidOmniSwitchError2

1 warning generated.
[ 57% 49000/84792] Protoc: /home/wrongway213/liquid/out/target/product/cheese...lutils/proto/sap-api.pb.c <= hardware/ril-caf/librilutils/proto/sap-api.proto
[libprotobuf WARNING external/protobuf/src/google/protobuf/compiler/parser.cc:547] No syntax specified for the proto file: hardware/ril-caf/librilutils/proto/sap-api.proto. Please use 'syntax = "proto2";' or 'syntax = "proto3";' to specify a syntax version. (Defaulted to proto2 syntax.)
Protobuf relocation: /home/wrongway213/liquid/out/target/product/cheeseburger/gen/STATIC_LIBRARIES/librilutils_static_intermediates/proto/hardware/ril-caf/librilutils/proto/sap-api.pb.h => /home/wrongway213/liquid/out/target/product/cheeseburger/gen/STATIC_LIBRARIES/librilutils_static_intermediates/proto/hardware/ril/librilutils/proto/
[ 57% 49009/84792] target  C: rild <= hardware/ril-caf/rild/rild.c
In file included from hardware/ril-caf/rild/rild.c:36:
hardware/ril-caf/libril/../include/libril/ril_ex.h:25:38: warning: declaration of 'struct ril_event' will not be visible outside of this function [-Wvisibility]