build caffe error

Q1: Can't find hdf5.h when build caffe

Ans:
INCLUDE_DIRS := $(PYTHON_INCLUDE) /usr/local/include /usr/include/hdf5/serial/ and
LIBRARY_DIRS := $(PYTHON_LIB) /usr/local/lib /usr/lib /usr/lib/x86_64-linux-gnu/hdf5/serial/

Q2: caffe compilation error (on make all step) "[.build_release/lib/libcaffe.so.1.0.0-rc3] Error 1

Ans:
sudo ln -s /usr/lib/x86_64-linux-gnu/libboost_python-py35.so /usr/lib/x86_64-linux-gnu/libboost_python3.so


Q3: .build_release/lib/libcaffe.so: undefined reference to `cv::imdecode

Ans:
# OPENCV_VERSION := 3
To use OpenCV 3.X with Caffe, you should uncomment this line. You can refer to the 197th line in Makefile for the reason.

Q4: Multi-GPU

Ans:
uncomment USE_NCCL := 1 in Makefile.config and install nccl first,
$ git clone https://github.com/NVIDIA/nccl.git
$ cd nccl
$ sudo make install -j8

Q5: runing caffe error ../build/tools/caffe: error while loading shared libraries: libnccl.so.1: cannot open shared object file: No such file or directory

Ans:
add libnccl.so.1 path to LD_LIBRARY_PATH
export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/local/cuda-8.0/lib64:/usr/local/cuda-8.0/extras/CUPTI/lib64:/usr/local/lib"

Q6: can't import caffe in python
make pycaffe
make distribute
export PYTHONPATH=/path/to/caffe/python:$PYTHONPATH


referance:
https://github.com/NVIDIA/DIGITS/issues/156
https://github.com/BVLC/caffe/issues/4610
https://github.com/BVLC/caffe/issues/4621