Ubuntu 18.04 では sudo apt install caffe-cpu で導入できますが, チュートリアルを実行したいためにコードのビルドから実行

実行環境

Windows 10 (1903)
Ubuntu 18.4 on WSL
No CUDA環境

環境構築

Caffeの各種情報を参考に環境構築

必要なツールのインストール
Tutorialの環境のビルドのためsudo apt install caffe-cpuではなくてmakeできる環境を準備します.
http://caffe.berkeleyvision.org/install_apt.html を参考に

sudo apt-get install \
  libprotobuf-dev \
  libleveldb-dev \
  libsnappy-dev \
  libopencv-dev \
  libhdf5-serial-dev \
  protobuf-compiler \
  libgflags-dev \
  libgoogle-glog-dev \
  libatlas-base-dev \
  liblmdb-dev \
  libboost-all-dev \
  -y

caffeのビルド

git clone https://github.com/BVLC/caffe.git
cd ./caffe
cp -a Makefile.config.example Makefile.config

Makefile.configの修正内容 (diff Makefile.config.example Makefile.config)

8c8
< # CPU_ONLY := 1
---
> CPU_ONLY := 1
97,98c97,98
< INCLUDE_DIRS := $(PYTHON_INCLUDE) /usr/local/include
< LIBRARY_DIRS := $(PYTHON_LIB) /usr/local/lib /usr/lib
---
> INCLUDE_DIRS := $(PYTHON_INCLUDE) /usr/local/include /usr/include/hdf5/serial
> LIBRARY_DIRS := $(PYTHON_LIB) /usr/local/lib /usr/lib /usr/lib/x86_64-linux-gnu/hdf5/serial

INCLUDE_DIRS := $(PYTHON_INCLUDE) /usr/local/include

make all

cv::imreadがないと怒られる...

CXX/LD -o .build_release/tools/caffe.bin
.build_release/lib/libcaffe.so: undefined reference to `cv::imread(cv::String const&, int)'
.build_release/lib/libcaffe.so: undefined reference to `cv::imencode(cv::String const&, cv::_InputArray const&, std::vector<unsigned char, std::allocator<unsigned char> >&, std::vector<int, std::allocator<int> > const&)'
.build_release/lib/libcaffe.so: undefined reference to `cv::imdecode(cv::_InputArray const&, int)'
collect2: error: ld returned 1 exit status
Makefile:635: recipe for target '.build_release/tools/caffe.bin' failed
make: *** [.build_release/tools/caffe.bin] Error 1

USE_PKG_CONFIG=1 を追加して再度makeしたら通った.

make USE_PKG_CONFIG=1 all test runtest
...
[==========] 1162 tests from 152 test cases ran. (43754 ms total)
[  PASSED  ] 1162 tests.