SINGA-270 Installation error: include/singa/proto/ is not in /usr/local/include

[xiezl]

Fix the installation path of include/singa/proto.

[moazreyad]

I tried the PR. The directory /usr/local/include/singa/proto/ exists now, but there is a compile error when I try to compile test.cpp from #272 :

$ g++ ./test.cpp -l singa In file included from /usr/local/include/singa/core/memory.h:24:0, from /usr/local/include/singa/core/device.h:30, from /usr/local/include/singa/core/tensor.h:27, from /usr/local/include/singa/io/encoder.h:24, from ./test.cpp:1: /usr/local/include/singa/proto/core.pb.h:17:2: error: #error This file was generated by an older version of protoc which is #error This file was generated by an older version of protoc which is ^~~~~ /usr/local/include/singa/proto/core.pb.h:18:2: error: #error incompatible with your Protocol Buffer headers. Please #error incompatible with your Protocol Buffer headers. Please ^~~~~ /usr/local/include/singa/proto/core.pb.h:19:2: error: #error regenerate this file with a newer version of protoc. #error regenerate this file with a newer version of protoc. ^~~~~ In file included from /usr/local/include/singa/io/encoder.h:25:0, from ./test.cpp:1: /usr/local/include/singa/proto/io.pb.h:17:2: error: #error This file was generated by an older version of protoc which is #error This file was generated by an older version of protoc which is ^~~~~ /usr/local/include/singa/proto/io.pb.h:18:2: error: #error incompatible with your Protocol Buffer headers. Please #error incompatible with your Protocol Buffer headers. Please ^~~~~ /usr/local/include/singa/proto/io.pb.h:19:2: error: #error regenerate this file with a newer version of protoc. #error regenerate this file with a newer version of protoc.

[xiezl]

The problem is caused by using two different protobuf libs. Please make sure you use the same version of protobuf for compiling your own code and the singa code.

[moazreyad]

Ok. I think the problem is fixed now and the PR can be merged. Thank you.