Make this thing build on windows

[eric-wieser]

Other things required that can't go in the repository:

1. A sane environment (64-bit Python 27 is a bit of a pain) that is already capable of building simple C extensions

2. An installation of OpenSSL that matches your python bitness

3. The following sequence of commands before running pip

   > set LIB=<path-to-openssl>/lib;%LIB%
   > set INCLUDE=<path-to-openssl>/include;%INCLUDE%
   

That should probably go in a readme somewhere

[danielrichman]

Maybe sys.platform, since then it differentiates between cygwin and not?

TBH I'm a bit reluctant to try and support every platform in setup.py for this---I suspect you're the only person that won't be using it on Linux.

[eric-wieser]

This seems to suggest that os.name is the correct way to go, since cygwin should not be looking for the windows-specific openssl file

[danielrichman]

Fair point, though the fact that sys.platform explicitly differentiates between "linux" "win32" and "cygwin" is arguably clearer.

[eric-wieser]

Ah, I was confusing sys.platform() with platform.system(). Your call on whether to use os.name or sys.platform

[tithalljcr]

Bit late to this party but did you manage to get this working on windows? I managed to get post most the common issues but have gotten stuck on this one:

Creating library build\temp.win32-3.6\Release\ucam_webauth\rsa.cp36-win32.lib and object build\temp.win32-3.6\Release\ucam_webauth\rsa.cp36-win32.exp
rsa.obj : error LNK2001: unresolved external symbol _BIO_new_mem_buf
rsa.obj : error LNK2001: unresolved external symbol _BIO_free
rsa.obj : error LNK2001: unresolved external symbol _RSA_verify
rsa.obj : error LNK2001: unresolved external symbol _RSA_free
rsa.obj : error LNK2001: unresolved external symbol _PEM_read_bio_RSAPublicKey
build\lib.win32-3.6\ucam_webauth\rsa.cp36-win32.pyd : fatal error LNK1120: 5 unresolved externals
error: command 'C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.22.27905\bin\HostX86\x86\link.exe' failed with exit status 1120