[人工智能]caffe安装血泪史：caffe不支持cuDNN8

（写在前面的废话）
由于调试代码需要，需要安装caffe环境，网上教程很多，主要步骤是github下载，修改makeflie的两个文件，然后make。于是我这个新手小白就开始安装了。各种报错和调试，终究没能编译通过。而且报的错误网上也查不到，可把我头疼坏了。
错误主要和***cudnn***有关！！！

发现是cudnn版本问题，于是我又从giyhub上下载了cudnn8的caffe框架，依旧以失败告终。
最后的最后，降低了cuda和cudnn版本，编译通过！！！
**`

》》》》》》》》结论：caffe不支持cuDNN8！！！！《《《《《《《《

`**
原来的

cuda11.2+cuDNN8.2.0

降低后

cuda10.2+cuDNN7.6.5

最后caffe安装过程参考
ubuntu16.04+anaconda3+python2.7虚拟环境+caffe配置过程及踩坑经历
多版本cuda安装过程和一般的一样，就是涉及到版本切换的软连接问题。可以参考
linux下安装多版本cuda和cudnn

**

我的配置是 ubuntu18.04+anaconda3+py27虚拟环境+cuda10.2+cuDNN7.6.5

》》》》》》》》》》》》》》》》 最后《《《《《《《《《《《《

**
make test ,make runtest make pycaffe都没有问题

import caffe报错，继续填坑

问题1：

>>>import caffe
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/bjl/env/caffe/python/caffe/__init__.py", line 1, in <module>
    from .pycaffe import Net, SGDSolver, NesterovSolver, AdaGradSolver, RMSPropSolver, AdaDeltaSolver, AdamSolver, NCCL, Timer
  File "/home/bjl/env/caffe/python/caffe/pycaffe.py", line 13, in <module>
    from ._caffe import Net, SGDSolver, NesterovSolver, AdaGradSolver, \
ImportError: /home/bjl/env/caffe/python/caffe/_caffe.so: undefined symbol: _ZN5caffe3NetIfE21CopyTrainedLayersFromERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE

解决1：
删除/usr/lib/x86_64-linux-gnu/下的libcaffe.so.1.0.0文件

sudo rm -f /usr/lib/x86_64-linux-gnu/libcaffe.so.1.0.0

问题2

>>> import caffe
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/bjl/env/caffe/python/caffe/__init__.py", line 1, in <module>
    from .pycaffe import Net, SGDSolver, NesterovSolver, AdaGradSolver, RMSPropSolver, AdaDeltaSolver, AdamSolver, NCCL, Timer
  File "/home/bjl/env/caffe/python/caffe/pycaffe.py", line 13, in <module>
    from ._caffe import Net, SGDSolver, NesterovSolver, AdaGradSolver, \
ImportError: /home/bjl/anaconda3/envs/py27/bin/../lib/libgio-2.0.so.0: undefined symbol: g_unix_get_passwd_entry

解决2：

conda install -c anaconda glib==2.56.1

问题3

>>> import caffe
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/bjl/env/caffe/python/caffe/__init__.py", line 1, in <module>
    from .pycaffe import Net, SGDSolver, NesterovSolver, AdaGradSolver, RMSPropSolver, AdaDeltaSolver, AdamSolver, NCCL, Timer
  File "/home/bjl/env/caffe/python/caffe/pycaffe.py", line 15, in <module>
    import caffe.io
  File "/home/bjl/env/caffe/python/caffe/io.py", line 2, in <module>
    import skimage.io

解决3

 conda install scikit-image

问题4

>>> import caffe
/home/bjl/anaconda3/envs/py27/lib/python2.7/site-packages/matplotlib/font_manager.py:278: UserWarning: Matplotlib is building the font cache using fc-list. This may take a moment.
  'Matplotlib is building the font cache using fc-list. '
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/bjl/env/caffe/python/caffe/__init__.py", line 1, in <module>
    from .pycaffe import Net, SGDSolver, NesterovSolver, AdaGradSolver, RMSPropSolver, AdaDeltaSolver, AdamSolver, NCCL, Timer
  File "/home/bjl/env/caffe/python/caffe/pycaffe.py", line 15, in <module>
    import caffe.io
  File "/home/bjl/env/caffe/python/caffe/io.py", line 8, in <module>
    from caffe.proto import caffe_pb2
  File "/home/bjl/env/caffe/python/caffe/proto/caffe_pb2.py", line 6, in <module>
    from google.protobuf.internal import enum_type_wrapper
ImportError: No module named google.protobuf.internal

解决4

pip2 install protobuf

终于！

>>> import caffe
>>> 

新的服务器，新的白给小码农，还有数不尽的坑。。。