Build PyCaffe wheel package for python3.5

build_pycaffe_wheel_for_linux_cpu_py3

Environment:
  - Ubuntu 16.04
  - Python 3.5

Prerequisite:
  - clone and prepare caffe environment according to this guide: http://caffe.berkeleyvision.org/install_apt.html
  - Steps:
      1. General dependencies:
          sudo apt-get install libprotobuf-dev libleveldb-dev libsnappy-dev libopencv-dev libhdf5-serial-dev protobuf-compiler
          sudo apt-get install --no-install-recommends libboost-all-dev
      2. Blas:
          ATLAS(**By Default**): sudo apt-get install libatlas-base-dev
          or
          OpenBLAS: sudo apt-get install libopenblas-dev
      3. Python (have the Python headers for building the pycaffe interface):
          sudo apt-get install python3-dev

Clone Caffe repo:
  - git clone https://github.com/BVLC/caffe.git

Install python depencies
  - for req in $(cat requirements.txt); do pip3 install $req; done

Edit Config Files:
  1. Edit CMakeLists.txt
        In line 35: set(python_version "3" CACHE STRING "Specify which Python version to use") # Change to use python3
        [change "2" -> "3"]
  2. Edit Makefile.config
        In line 8: CPU_ONLY := 1
        In line 68-69: comment "PYTHON_INCLUDE" (donot use python2)
        In line 78-80: uncomment "PYTHON_LIBRARIES" and "PYTHON_INCLUDE" (use python3)
        
Build Caffe:
  - Build with CMake
      mkdir build
      cd build
      cmake .. -DCMAKE_VERBOSE_MAKEFILE=1   -DBUILD_TEST=OFF   -DBUILD_SHARED_LIBS=OFF -DCPU_ONLY=ON
      make all
      
      [NOTICE:]
      If you want to build caffe without Database: you can append -DUSE_LEVELDB=OFF -DUSE_LMDB=OFF after cmake command.
      
  - Build with Make
    1. Copy Makefile.config
          cp Makefile.config.example Makefile.config
    2. Edit Makefile.config
       - add "/usr/include/hdf5/serial" to "INCLUDE_DIRS":
          INCLUDE_DIRS := $(PYTHON_INCLUDE) /usr/local/include /usr/include/hdf5/serial
    3. build caffe and pycaffe
        make all
        make pycaffe

Generate PyCaffe Package
  cd python
  mkdir libs
  cp build/lib/libcaffe.so.1.0.0 python/libs
  vim setup_py2.py
  [**NOTE**: You can get the setup_py2.py code from https://github.com/PaulaQin/pycaffe_packages/tree/master/setupscripts/setup_py2.py]
  python setup_py2.py bdist_wheel