FYI, I've uploaded a patch that provides for cross-compilation on Windows between 32 and 64 bit platforms - all comments invited!
Thanks, Mark -----Original Message----- From: Mark Hammond [mailto:[EMAIL PROTECTED] Sent: Sunday, 30 March 2008 6:01 PM To: [EMAIL PROTECTED] Subject: [issue2513] 64bit cross compilation on windows New submission from Mark Hammond <[EMAIL PROTECTED]>: I've taken the liberty of adding Trent, Christian and Martin to the nosy list as I know they are actively, if reluctantly interested in this. This patch allows the distutils to cross-compile on Windows. It has been tested on x86 and amd64 platforms, with both platforms successfully able to natively and cross-compile extension modules and create binary distributions. To cross-compile, specify '--plat-name' to the build command (valid values are 'win32', 'win-amd64' and 'win-ia64'). This option name was chosen to be consistent with the bdist_dumb command. I've included the docs I added below (which are also in the patch), but note that as with native compilation using distutils, it's not necessary to set any environment variables or do anything else special with your environment to make this work. The patch also adds a x64 target for the 'bdist_wininst' target, which it creates as distutils/command/wininst-9.0-amd64.exe. This executable is necessary even for bdist_wininst to work natively on x64, but is still included here for simplicity. To assist with testing, I've also added a distutils setup.py script to the PC/example_nt directory. This is capable of creating bdist_wininst executables for both native and cross platforms; 'setup.py build --platname=win-amd64 bdist_wininst' will create an amd64 installer on an x86 machine. The patch has not been tested with a Visual Studio environment without cross-compile tools installed - it will obviously fail, but its not clear how ugly this failure will be. Below is the text I added to docs/distutils/builtdist.rst: 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. 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. ---------- assignee: mhammond components: Distutils files: windows-cross-compile.patch keywords: 64bit, patch messages: 64743 nosy: Trent.Nelson, ctheune, loewis, mhammond severity: normal status: open title: 64bit cross compilation on windows type: feature request versions: Python 2.6 Added file: http://bugs.python.org/file9900/windows-cross-compile.patch __________________________________ Tracker <[EMAIL PROTECTED]> <http://bugs.python.org/issue2513> __________________________________ _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
