3dprintscanner opened a new pull request #456: Update for protobuf version 
range, breaks with v3 protobuf
URL: https://github.com/apache/incubator-singa/pull/456
 
 
   Building source as per 
[](https://singa.incubator.apache.org/en/docs/installation.html) from with the 
`USE_MODULES=ON` flag pulls in protobuf 3.3.0 and the compilation fails with 
message `/src/caffe.pb.cc:31115:35: error: ‘MergeFromFail’ is not a member of 
‘google::protobuf::internal’
        ::google::protobuf::internal::MergeFromFail(__FILE__, __LINE__);`
   
   This is caused by the caffe.proto file being built against the proto 2.xx 
schema end emitting a c++ file with a call to MergeFromFail which was 
deprecated in the 3.x.x version of 
   protobuf. 
   
   This is a temp message to show the compatibility requirements to get a 
functional build. 
   
   Full solution is to migrate to v3 protobuf

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