Issues encountered by Windows compilation Caffe2

First, the following window compiles the CAFFE2 overall process:

Description: If you do not need Python support just 3, 4, and the compilation will not be the problem.

1. Install the python2.7.

I'm using the Anaconda python2.7 environment to add a Python path to the system path (Pyth).

2.python installation of some necessary libraries, such as NumPy, PYBIND11 (must not be verified?? )

Specific other dependent libraries see URLs:

Https://caffe2.ai/docs/getting-started.html?platform=windows&configuration=compile

I installed the library:

Pip install future hypothesis NumPy protobuf six
Pip Install flask glog Graphviz jupyter matplotlib pydot python-nvd3 pyyaml requests scikit-image scipy Setuptools tornado

Pip Install Pybind11

3. Run to find the downloaded caffe2\scripts\build_host_protoc.sh

4. Running Caffe2\scripts\build_windows.bat

Be aware of this:

If PYTHON support is required, set "-dbuild_python=off^" to "-dbuild_python=on^"

If off you can safely compile, set to on after you encounter the problem described below.

Problems encountered and solutions:

1. Problem cannot find NumPy, make sure Python is installed

Similar to: Could not find NumPy (Missing:numpy_include_dir numpy_version) error.

Workaround:

Remove the previous numpy and reinstall the NumPy to resolve the issue.

Delete: Pip uninstall NumPy

Installation: Pip Install Nump

2. Question:

CMake Summary Output

I am installing Caffe2 on win10 and it takes me almost a whole day. There is many missing Argvs and errors in build_windows.bat . I doubt that the script have not been tested before.
Now I have another problem afer executing build_windows.bat :
ERROR Failed to remove indentation from:
"""

  from distutils import sysconfig  print(sysconfig.get_python_lib(prefix=‘‘))

"""
Python dedent failed with error code: The system cannot find the file specified. (System can not find specified file)
CMake Error at cmake/utils.cmake:177 (message):
Python dedent failed with error code: The system cannot find the file specified. (System can not find specified file)
Call Stack (most recent call first):
cmake/utils.cmake:200 (dedent)
caffe2/cmakelists.txt:145 (Pycmd)

Workaround:

Modify the Cmake/utils.cmake file, the problem is estimated that the caffe2 will not be updated.

See URL: Https://github.com/pytorch/pytorch/pull/6296/commits/88ae3f4c4feb50532b64b2f5d1110a7c2e81ceb6

3. Problem cannot be connectedpython27.lib

“X:\caffe2\build\ALL_BUILD.vcxproj”(默认目标) (1) ->“X:\caffe2\build\caffe2\caffe2_pybind11_state.vcxproj”(默认目标) (8) ->(Link 目标) ->  LINK : fatal error LNK1104: cannot open “python27.lib” [X:\caffe2\build\caffe2\caffe2_pybind11_state.vcxproj]
解决方法：打开Caffe2.sln，然后安装图中操作：


然后就可以通过VS编译一下Caffe2，至此Caffe2编译完成。

编译完后将caffe2_pybind11_state.pyd拷贝都python的DLLs目录例如：XXX\Anaconda2\DLLs

4. python使用：Import Caffe2. But will report no module's fault.

>>> Import Caffe2
Traceback (most recent):
File "<stdin>", line 1, in <module>
Importerror:no module named Caffe2

Solution (1):

>>> Import Sys
>>> sys.path.append ("X:/xxxx/caffe2/build")
>>> Import Caffe2
>>> Import Caffe2.python

Solution (2):

Reference URL: https://www.cnblogs.com/shanql/articles/5477483.html

Under Windows: Locate the Site-packages folder in the Python installation environment:

New Mypkpath.pth (Note: You must have a. pth suffix), and then save the X:/xxxx/caffe2/build write in the file.

The purpose of this approach should be similar to C, C + + to tell python the header file, run-time python to find the corresponding DLL.

Issues encountered by Windows compilation Caffe2