Protobuf compiler in j2objc v2.1.1 generates code with references to enum values missing from jar

[safetydank]

With input protobuf definition sample.proto:

syntax = "proto2";

package protobuf;

option optimize_for = LITE_RUNTIME;

message Handshake {
    required string version = 1;
    optional string android_app_version = 101;
    optional string ios_app_version = 102;
}

I run the protobuf compiler using $J2OBJC/j2objc_protoc --java_out=java --j2objc_out=objc sample.proto

The generated Java code includes references to enum values GET_MEMOIZED_IS_INITIALIZED and SET_MEMOIZED_IS_INITIALIZED for type com.google.protobuf.GeneratedMessageLite.MethodToInvoke that are missing in $J2OBJC/lib/protobuf_runtime.jar (verified missing using JD-GUI). This causes errors when using j2objc to translate Java source files with references to the generated protobuf Java code.

[tomball]

The "optimize for LITE_RUNTIME" option no longer supports reflective methods in the Java protobuf runtime. That support is now available in a separate libprotobuf-lite.jar, but there isn't a j2objc equivalent to that runtime. I recommend you remove that option from your proto file.

[safetydank]

Thanks for looking into this.