winpty/README.rst
2015-09-30 04:00:32 -05:00

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======
winpty
======
winpty is a Windows software package providing an interface similar to a Unix
pty-master for communicating with Windows console programs. The package
consists of a library (libwinpty) and a tool for Cygwin and MSYS for running
Windows console programs in a Cygwin/MSYS pty.
The software works by starting the ``winpty-agent.exe`` process with a new,
hidden console window, which bridges between the console API and terminal
input/output escape codes. It polls the hidden console's screen buffer for
changes and generates a corresponding stream of output.
The Unix adapter allows running Windows console programs (e.g. CMD, PowerShell,
IronPython, etc.) under ``mintty`` or Cygwin's ``sshd`` with
properly-functioning input (e.g. arrow and function keys) and output (e.g. line
buffering). The library could be also useful for writing a non-Cygwin SSH
server.
Prerequisites
=============
You need the following to build winpty:
* A Cygwin or MSYS installation
* GNU make
* A MinGW g++ toolchain, v4 or later, to build ``winpty.dll`` and
``winpty-agent.exe``
* A g++ toolchain targeting Cygwin or MSYS, v3 or later, to build
``console.exe``
Winpty requires two g++ toolchains as it is split into two parts. The
binaries winpty.dll and winpty-agent.exe interface with the native Windows
command prompt window so they are compiled with the native MinGW toolchain.
The console.exe binary interfaces with the MSYS/Cygwin terminal so it is
compiled with the MSYS/Cygwin toolchain.
MinGW appears to be split into two distributions -- MinGW (creates 32-bit
binaries) and MinGW-w64 (creates both 32-bit and 64-bit binaries). Either
one is acceptable, but the compiler must be v4 or later.
Cygwin packages
---------------
The default g++ compiler for Cygwin targets Cygwin itself, but Cygwin also
packages MinGW compilers from both the MinGW and MinGW-w64 projects. As of
this writing, the necessary packages are:
* Either ``mingw-gcc-g++``, ``mingw64-i686-gcc-g++`` or
``mingw64-x86_64-gcc-g++``. Select the appropriate compiler for your
CPU architecture.
* ``gcc-g++``
* ``make``
MSYS packages
-------------
For the original MSYS, use the ``mingw-get`` tool (MinGW Installation Manager),
and select at least these components:
* ``mingw-developer-toolkit``
* ``mingw32-base``
* ``mingw32-gcc-g++``
* ``msys-base``
* ``msys-system-builder``
When running ``./configure``, make sure that ``mingw32-g++`` is in your
``PATH``. It will be in the ``C:\MinGW\bin`` directory.
For MSYS2, use ``pacman`` and install at least these packages:
* ``msys/gcc``
* ``mingw32/mingw-w64-i686-gcc`` or ``mingw64/mingw-w64-x86_64-gcc``. Select
the appropriate compiler for your CPU architecture.
* ``make``
Build
=====
In the project directory, run ``./configure``, then ``make``.
This will produce three binaries:
* ``build/winpty.dll``
* ``build/winpty-agent.exe``
* ``build/console.exe``
Using the Unix adapter
======================
To run a Windows console program in ``mintty`` or Cygwin ``sshd``, prepend
``console.exe`` to the command-line::
$ build/console.exe c:/Python27/python.exe
Python 2.7.2 (default, Jun 12 2011, 15:08:59) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> 10 + 20
30
>>> exit()
$