Ezclient 1.0.0

P2P client library

Install

 pip install Pyllab

or

Build .whl package On Linux/Mac:

sh generate_wheel_unix.sh

• On Linux specifically you have to fix the wheel package:

sudo docker run -i -t -v `pwd`:/io quay.io/pypa/manylinux1_x86_64 /bin/bash

go in /io and move the libllab.so to /usr/local/lib/

cd io
mv libllab.so /usr/local/lib/

Then repair the wheel package it.

cd dist
auditwheel repair package.whl --plat manylinux2014_x86_64

in the wheelhouse directory you have the fixed wheel package

Build .whl package on Windows

• It is a PIA. Why?

Pyllab is a cython library compiling .C files that use posix calls system. Now you can see the problem here. Just follow me in this journey:

• Install Mingw with MYSYS2: https://www.msys2.org/ follow the steps and also the passages to install mingw-w64

• now navigate to Pyllab with MYSYS2 and create the .dll library:

sh create_shared_windows.sh

• Go to your Python Folder (We assume as example we are using python 3.7):

• You can find your python folder with:

import sys

locate_python = sys.exec_prefix
print(locate_python)

• Create the file Python37\Lib\distutils\distutils.cfg that should look like this:

[build]
compiler=mingw32
 
[build_ext]
compiler=mingw32

• Download this .dll file https://it.dllfile.net/microsoft/vcruntime140-dll:

• Move it to Python37\libs and to Python37\DLLs

• Move libllab.dll previously built to Python37\libs

• Now, Move to Python37\Lib\distutils\cygwinccompiler.py and modify the function get_msvcr() as follows: https://bugs.python.org/file40608/patch.diff

• The last part

elif msc_ver == '1900':

change it to

elif msc_ver == '1916':

• Now other bug fix: go to Python37\include\pyconfig.h and add these lines:

/* Compiler specific defines */


#ifdef __MINGW32__
#ifdef _WIN64
#define MS_WIN64
#endif
#endif

• Now you can run from MYSYS2:

sh build_python_library.sh

• Links:
• https://www.msys2.org/ (To get MYSYS2 with mingw-w64)
• https://wiki.python.org/moin/WindowsCompilers (distutils.cfg)
• https://datatofish.com/locate-python-windows/ (Python folder search script)
• https://stackoverflow.com/questions/34135280/valueerror-unknown-ms-compiler-version-1900 (vcruntime140-dll lacking dll)
• https://bugs.python.org/file40608/patch.diff (function fix, changing from 1900 to 1916 was my guess and it worked, it enables the use of the .dll previously installed)
• https://github.com/cython/cython/issues/3405 (For the ifdef stuff, cython bug)

Install .whl files

Once you have created the .whl file, you can install it locally using pip:

pip install package.whl

Import the library in python

import pyllab