two caffe (caffe and caffe-master) in external folder

[aysegulucar2016]

How can I install DeepTerrainRL ubuntu 16.04?
I have two questions
1-.....
Could you please give me detailed instruction steps?

I downloaded external into DeepTerrainRL.

There is two caffes in external folder. caffe and caffe-master

Which one should I build?
I tried both.

The first one is resulted.
selman@selman-Inspiron-7559:~/DeepTerrainRL-master/external/caffe/build$ make
make: *** No targets specified and no makefile found. Stop.

The other is resulted
selman@selman-Inspiron-7559:~/DeepTerrainRL-master/external/caffe-master$ make
CXX .build_release/src/caffe/proto/caffe.pb.cc
In file included from .build_release/src/caffe/proto/caffe.pb.cc:5:0:
.build_release/src/caffe/proto/caffe.pb.h:12:2: error: #error This file was generated by a newer version of protoc which is
#error This file was generated by a newer version of protoc which is
^
.build_release/src/caffe/proto/caffe.pb.h:13:2: error: #error incompatible with your Protocol Buffer headers. Please update
#error incompatible with your Protocol Buffer headers. Please update

2......
In ddition ı have caffe in home in my computer. Does distrub my caffe in home building a cafee in DeepTerrainRL-master?