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Issue #2513: enable 64bit cross compilation on windows.

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Mark Hammond 2008-04-07 01:53:39 +00:00
parent aa63d0d4af
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Doc/distutils/builtdist.rst
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@ -329,6 +329,42 @@ version number. This can be changed to another text by using the
The installer file will be written to the "distribution directory" --- normally
:file:`dist/`, but customizable with the :option:`--dist-dir` option.
.. _cross-compile-windows:
Cross-compiling on Windows
=====================
Starting with Python 2.6, distutils is capable of cross-compiling between
Windows platforms. In practice, this means that with the correct tools
installed, you can use a 32bit version of Windows to create 64bit extensions
and vice-versa.
To build for an alternate platform, specify the :option:`--plat-name` option
to the build command. Valid values are currently 'win32', 'win-amd64' and
'win-ia64'. For example, on a 32bit version of Windows, you could execute::
python setup.py build --plat-name=win-amd64
to build a 64bit version of your extension. The Windows Installers also
support this option, so the command::
python setup.py build --plat-name=win-amd64 bdist_wininst
would create a 64bit installation executable on your 32bit version of Windows.
To cross-compile, you must download the Python source code and cross-compile
Python itself for the platform you are targetting - it is not possible from a
binary installtion of Python (as the .lib etc file for other platforms are
not included.) In practice, this means the user of a 32 bit operating
system will need to use Visual Studio 2008 to open the
:file:`PCBuild/PCbuild.sln` solution in the Python source tree and build the
"x64" configuration of the 'pythoncore' project before cross-compiling
extensions is possible.
Note that by default, Visual Studio 2008 does not install 64bit compilers or
tools. You may need to reexecute the Visual Studio setup process and select
these tools (using Control Panel->[Add/Remove] Programs is a convenient way to
check or modify your existing install.)
.. _postinstallation-script: